JPS6328961Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a guide rail fastening device for a three-wire rail that fastens a steel guide rail having a lower flange on a steel floor plate laid in the center between the running rails. .

2. Description of the Related Art In recent years, a new type of transportation system with three-track rails having a running rail and a guide rail is being developed as a transportation system between cities.

The guide rails of this new transportation system are laid on a steel floor plate, and unlike the rail fastening of conventional railway vehicles, the guide rails of this new transportation system must be fastened with elasticity that minimizes the curling of the clips against large lateral forces. Since the vehicle's current is collected through the guide rail, it is necessary to electrically insulate the guide rail and the steel floor plate to prevent electrical contact with the fastening fittings.

The present invention has been made to solve the above problems, and includes a clip holder for fixing a fastening device on a steel floor plate facing the lower flange of the guide rail; The clip is comprised of a clip that engages the shaft portion in a hinge-like manner, and the clip holder has a clip bearing portion having an arcuate cross section for supporting lateral pressure, and a locking groove on the lower surface for locking the head of the fastening bolt. The clip bearing portion is formed with an elongated hole whose axial direction is inclined with respect to the installation direction of the guide rail, and the elongated hole is formed with its longitudinal direction inclined with respect to the installation direction of the guide rail. A pressing part and a lateral pressure bearing part that engage with each other through an insulating track pad on the top and side surfaces, and a through hole through which the fastening bolt is inserted are formed, and the shaft part has a circular cross section and the axis of the clip bearing part is formed. The shaft portion is formed in the same direction as the clip bearing portion, and the shaft portion is engaged with the clip bearing portion through an insulating bushing.

To explain one embodiment shown below, the first
2 is a sectional front view of FIG. 1, FIG. 3 is a perspective view of the clip holder, and FIG. 4 is a perspective view of the clip.

In the center between the running rails, a steel floor plate 3 is installed on which the guide rail 2 is installed via an insulating rail pad 1 made of an elastic material on the upper surface, and a lower flange of the guide rail 3 is installed on the steel floor plate 3. A clip holder 4 is welded and fixed opposite to 11.

The clip holder 4 has a clip bearing part 5 having an arcuate cross section that supports the lateral pressure from the guide rail 2 on one side, and a locking groove 7 in which the head of a T-shaped fastening bolt 6 engages on the back side. The shaft of the fastening bolt 6 is inserted into the upper surface of the locking groove 7 and is movable along the locking groove 7.The clip bearing part 5 has an elongated hole 8 that extends in its axial direction, and the elongated hole 8 extends in its longitudinal direction. Each of the guide rails 2 is formed to be inclined with respect to the installation direction of the guide rail 2. The locking groove 7 has an arcuate cross section so that the head of the fastening bolt 6 can rotate.

The clip 9 fastened to the clip holder 4 has one side axially aligned with the clip bearing portion 5 of the clip holder 4.
A shaft portion 10 having a circular cross section inclined in the same direction as the direction of inclination is attached to the lower flange 11 of the guide rail 2 on the lower surface of the other side.
A pressing portion 14 and a lateral pressure bearing portion 15 that engage with the upper surface 12 and side surface 13 via the insulating track pad 1
However, a through hole 16 through which the shaft portion of the fastening bolt 6 is inserted is formed in the center portion.

Then, attach the shaft portion 10 of the clip 9 to the insulating bushing 1.
T of the fastening bolt 6 which is hinge-likely engaged with the bearing portion 5 of the clip holder 4 via the clip holder 7 and rotatably supports the clip 9 with respect to the clip holder 4, and whose shaft portion is inserted into the through hole 16. Clip the glyph head to the pedestal 4
The clip 9 is attached to the clip holder 4 by inserting it through the elongated hole 8 and turning the bolt 6 a half turn so that its head is locked in the locking groove 7.

Then, the side part of the insulating rail pad 1 is connected to the guide rail 2.
The clip of the clip holder 4 is bent along the side surface 13 and the top surface 12 of the lower flange 11 of the clip holder 4 until the lateral force bearing part 15 of the clip 9 presses the side surface of the lower flange 11 of the guide rail 2 through the pad 1. Adjust the fastening position by shifting the bearing part 5 in the axial direction, insert the flat washer 18, the flanged elastic insulation bushing 19, the flat washer 20, the spring washer 21, and the flat washer 22 into the fastening bolt 6 in this order, and clip them with the nut 23. 9 concluded,
The pressing portion 14 of the clip 9 presses the upper surface 12 of the lower flange 11 of the guide rail 2 through the insulating rail pad 1 to fasten the guide rail 2 to the steel floor plate 3.

As described above, the present invention includes the clip bearing part of the clip holder, the locking groove of the fastening bolt, the elongated hole, and the clip shaft part. Since the longitudinal direction of each clip is inclined with respect to the installation direction of the guide rail, the fastening position of the clip with respect to the guide rail can be easily adjusted by moving the clip along the clip bearing part of the clip holder. Since the fastening position of the clip itself relative to the clip holder is regulated by the fastening bolt and does not change, the guide rail can always be fastened with a constant pressing force.

In addition, the lateral pressure of the guide rail transmitted to the lateral pressure bearing part of the clip is absorbed from the shaft part of the clip by the clip bearing part of the clip pedestal through the insulating rail pad and insulating bushing having the same thickness. Therefore, the pressure absorption is constant compared to the conventional wedge-shaped adjusting body, which has an uneven modulus of elasticity due to changes in its thickness, which results in non-uniformity. Furthermore, since the clip's shaft part is engaged in a hinge-like manner with the clip bearing part of the clip holder, it can easily follow sudden vertical vibrations without deviating from the insulating bushing, and can keep the clip's deflection to an extremely small level. Further, it is possible to achieve many practical effects such as being able to connect the guide rail and the steel floor plate in an electrically insulated state.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of the device of the present invention;
2 is a sectional front view of FIG. 1, FIG. 3 is a perspective view of the clip holder, and FIG. 4 is a perspective view of the clip. 1 is an insulating rail pad, 2 is a guide rail, 3 is a steel floor plate, 4 is a clip holder, 5 is a clip bearing part, 6 is a fastening bolt, 7 is a locking groove, 8 is a long hole, 9
is the clip, 10 is the shaft, 11 is the lower flange, 1
2 is a top surface, 13 is a side surface, 14 is a pressing part, 15 is a lateral pressure support part, 16 is a through hole, 17 is an insulating bushing, 1
8, 20, 22 are flat washers, 19 is a flanged elastic insulating bushing, 21 is a spring washer, and 23 is a nut.

Claims (1)

[Scope of utility model registration request] In a guide rail fastening device for a three-wire rail that fastens a steel guide rail having a lower flange on a steel floor plate laid in the center between running rails, the fastening device is opposite to the lower flange of the guide rail. The clip comprises a clip holder that is fixed on a steel floor plate, and a clip that engages the shaft portion of the clip holder in a hinge-like manner. a clip bearing portion and a long hole having a locking groove on the lower surface for locking the head of a fastening bolt, the clip bearing portion extends in the axial direction thereof, and the long hole extends in the longitudinal direction of the guide rail. The clip is formed to be inclined with respect to the direction, and the clip has a pressing part and a lateral pressure bearing part that engage the upper and side surfaces of the lower flange of the guide rail through an insulating rail pad, and a transparent part through which the fastening bolt is inserted. The shaft portion is formed with a circular cross section and in the same direction as the axial direction of the clip bearing portion, and the shaft portion is engaged with the clip bearing portion via an insulating bushing. A fastening device for guide rails.