JPH045521Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a device for fastening a rail to sleepers, a concrete track bed, etc. using the elastic force of a spring without using bolts.

Prior Art and its Problems Conventionally, bolts have been commonly used to attach rails to sleepers and the like. However, when bolts are used, there are problems in that the bolts tend to loosen due to vibrations of the vehicle, etc., and there are also problems in that the bolts become corroded due to rust.

In order to solve these problems, elastic fastening devices for rails that do not use bolts have recently been proposed, but all conventional devices have complicated mechanisms or require the use of special tools. There is a problem.

Means for Solving the Problems The present invention has one end that is locked to a locking fitting that has a pair of downwardly opening inclined guide surfaces and a lower locking surface that are provided inside the rail support, and the other end that locks the rail flange. This is a device that elastically fixes the rail to the rail support using a deformed U-shaped spring that presses. The above-mentioned problem is solved by having a rail flange pressing part and an intermediate curved part, and having the L-shaped locking part pressed against the inclined guide surface and opened and locked to the lower locking surface. .

Function In the present invention, the rail flange pressing portion of the end of the deformed U-shaped spring is pressed against the rail flange, and the L
When the L-shaped locking part is pushed down and opened using the inclined guide surface of the locking metal fitting as a guide, the L-shaped locking part expands and when it reaches the lower locking surface, it returns to its original shape due to the elasticity of the spring, and the lower locking surface The rail is elastically fastened to the rail support by the compressive force of the deformed U-shaped spring.

To release the connection, insert a tool so as to be guided by the inclined guide surface and open the L-shaped locking part of the deformed U-shaped spring wider than the width of the lower locking surface of the locking metal fitting. The force causes the deformed U-shaped spring to come off.

Embodiments Hereinafter, embodiments of the present invention will be described based on the drawings.

Figures 1 and 2 show the state after the rail 1 has been fastened.
A recess 5 having the width of the flange 3 of the rail 1 and into which the pad 4 is inserted is provided, the pad 4 is laid in the recess 5, and the rail 1 is placed on it.

The modified U-shaped spring 10 consists of locking parts 11, 11' formed by bending the open end of a long U-shape into an L-shape, intermediate curved parts 12, 12', and a rail flange pressing part 13 at the tip. The overall shape seen from the front is
As shown in Figure 1, it is shaped like the number 7 with the tip rounded inward. Such a shape allows for a large amount of deflection.

3 and 4 show a locking fitting 20, in which a pair of inclined guide surfaces 22, 22' that open downward are provided at the center of a flat plate 21 having a thickness necessary for strength, and deformable on both sides thereof. A pair of holes 23, 23' are provided through which the L-shaped locking portions 11, 11' of the U-shaped spring 10 pass.

Returning to FIGS. 1 and 2 again, the embedded plugs 30 housing the locking fittings 20 are embedded in advance at predetermined positions of the rail support 2 on both sides of the rail 2, and are embedded in the foundation. It consists of a plug 31 and an upper plug 32, and a locking fitting 20 is fixed between the stepped portion 33 of the upper plug 32 and the base plug 31. Reference numeral 34 is a drain hole. The embedded plug 30 is normally made of electrically insulating plastic, but can be made of metal when electrical insulation is not required.

As shown in FIG. 5, the fastening jig 40 is composed of an arm 41, a head 42, and a support rod 43.

Next, the fastening method will be explained with reference to FIG.
1' into the opening 35 of the upper plug 31.
Then, when the lower end of the support rod 43 of the fastening jig 40 is fixed to the rail support 2 and the arm 41 is lifted, the head 42 is lowered about the fulcrum 44 of the support rod 43, pressing the deformed U-shaped spring 10 downward. As a result, as can be seen from FIG. 2, the L-shaped locking portions 11, 11' are gradually pushed apart along the inclined guide surfaces 22, 22'. Furthermore, parallel guide surfaces 24, 2
After passing 4', it returns to its original shape due to the elasticity of the spring.
The L-shaped locking portions 11, 11' are attached to the lower locking surface 25 and cannot be removed. In this way, the rails are fastened by the compressive force of the deformed U-shaped spring 10. In addition,
It is desirable to provide parallel guide surfaces 24, 24' between the inclined guide surfaces 22, 22' and the lower locking surface 25, since this prevents sudden changes in the cross-sectional shape.

The above procedure is performed on both sides of the rail 1.

To unfasten the rail, proceed as follows.

6 and 7 show the extractor 50, and the presser bar 5
1. Rotation support part 52, pair of arms 53, 53'
It is integrally constituted by. First, extractor 50
The two arms 53, 53' of the U-shaped spring 1
0 and push it in as shown in Fig. 6, the tips of the arms 53, 53' are expanded along the inclined guide surfaces 22, 22', so that the deformed U-shaped spring located on the outside 10 L-shaped locking parts 1
1 and 11' are pushed apart and opened wider than the width of the lower locking surface 25, the spring flies upward due to the spring's own repulsive force and comes off from the rail flange 3, releasing the fastening.

It should be noted that the illustrated examples of the embedded plug, locking metal fittings, etc. are for illustrative purposes only, and needless to say, do not limit the scope of application of the present invention. Further, the cross-sectional shape of the modified U-shaped spring may be square.

Effects of the invention: Since the rails can be elastically fastened without using bolts, problems caused by loosening or rusting of bolts are eliminated, and work efficiency is significantly improved because the number of parts is small and only simple tools are required.

[Brief explanation of the drawing]

Fig. 1 is a front view showing a partially sectional view of the right half of the rail when the rail is fastened, Fig. 2 is a side view showing a partially sectional view, Fig. 3 is a plan view of the locking fitting, and Fig. 4 is a partially sectional view of the right half of the rail. 3 is a cross-sectional view taken along the line 4-4 in FIG. 3, FIG. 5 is a front view showing a fastening method using a fastening jig, FIG. 6 is a side view showing how to use a extractor, and FIG. 7 is a side view corresponding to FIG. 2. is a front view of only the extractor. 1...Rail, 2...Rail support, 3...Rail flange, 10...Deformed U-shaped spring, 11,
11'... L-shaped locking part, 12, 12'... Intermediate curved part, 13... Rail flange pressing part, 20...
Locking metal fitting, 22, 22'... Inclined guide surface, 25...
...Lower locking surface.

Claims (1)

[Claim for Utility Model Registration] A modification in which one end is locked to a locking fitting provided inside the rail support and has a pair of downwardly opening inclined guide surfaces and a lower locking surface, and the other end presses against the rail flange. A device for elastically fastening a rail to a rail support using a U-shaped spring, the deformed U-shaped spring has a locking part formed by bending the open end of a long U-shape into an L-shape, and a rail at the other end. An elastic fastening device for a rail, comprising a flange pressing portion and an intermediate curved portion, the L-shaped locking portion being pressed against the inclined guide surface and locked to the open lower locking surface. .