JP2614160B2 - Rail fixing tool and rail fixing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rail fixing tool and a rail fixing method for fixing a rail supporting a heavy object such as a rail for a railway, and more particularly to a rail fixing method suitable for laying a rail on a concrete roadbed. About things.

[0002]

2. Description of the Related Art Generally speaking, rails for railways will be reminiscent of private railways or JR railways that are nearby. However, railroads have many uses, and they are also used for running stacker cranes for loading and unloading cargo. Some stacker cranes, for example, transport cars in a 15-tier stack in a car warehouse, so that the rails for the stacker cranes are loaded more than ordinary railroad tracks.

FIGS. 5 to 7 show an example of a conventional stacker crane rail laying structure. FIG. 5 is a plan view of a main part, FIG. 6 is a sectional view taken along line AA of FIG. Is BB
It is a line sectional view. The pair of tracks 1 a and 1 b are laid on a concrete roadbed 2. The jig 3 includes rails 1a, 1
It is used for level adjustment when laying b,
After being used for level adjustment, it is buried in concrete as it is.

[0005] Therefore, as shown by a solid line in FIG. 5, actually, as shown in FIG. 6, it is buried in a concrete roadbed 2 and has a structure in which rails 1 a and 1 b are mounted on the upper part. The jigs 3 are provided at intervals of about 1.2 to 1.5 m. The rails 1a and 1b are, for example, 0.
It is fixed to the concrete roadbed 2 by the rail fixing tool 11 at intervals of about 5 m. Next, the fixing structure of the rails 1a and 1b will be described. Since the fixing structure of both is the same, the rail 1b shown in FIG. 7 will be described. The rail fixing tool 11 includes a base plate 12, an anchor clip 13, an anchor bolt 14, nuts 15, 16, and the like.

When the rail 1b is fixed, the rail 1b is positioned using the jig 3 as shown in FIG.
The rail fixing tool 11 is fixed to the rail 1b at predetermined intervals. This fixing is performed by sandwiching the lower flange of the rail 1b with the base plate 12 and the rail clip 13,
This is performed by tightening the nuts 15 and 16. After the rail fixing tool 11 is attached to the rail 1b in this manner, concrete for forming the concrete roadbed 2 is poured so that the nut 16 at the lower part of the base plate 12 and the bolt 14 bent at the lower part cannot be removed. Then, the rail 1b is laid on the concrete roadbed 2.

[0006]

However, the structure of the conventional rail fixing tool 11 has the following problems in detail. That is, after laying the rails 1a and 1b,
Further, there is a case where it is desired to tighten the concrete roadbed 2. In such a case, since the nut 16 is embedded in the concrete roadbed 2, the nut 15 screwed to the anchor bolt 14 on the base plate 12 is tightened. However, since the lower surface of the base plate 12 is positioned by the nut 16, when the nut 15 is tightened, the rail clip 13 is tightened so as to press the lower flange of the rail 1b against the base plate 12.

In other words, even if the nut 15 is tightened,
Rail 1b, rail clip 13, base plate 12
Are only tightened between the nut 15 and the nut 16, and are not directly tightened to the concrete roadbed 2. Therefore, after the concrete track bed 2 is solidified, the rail 1b cannot be more firmly fixed to the concrete track bed 2, and even if it becomes necessary to further tighten a part of the rail 1b to adjust the height, it can be executed. Can not. However, as long as the bolt 14 does not come off from the concrete roadbed 2, the rail 1b, the rail clip 13, and the base plate 12 do not rise from the concrete roadbed 2.

On the other hand, as disclosed in Japanese Unexamined Patent Publication No. Hei 3-8901 and Japanese Unexamined Utility Model Publication No. Hei 3-89701, an excessive force is applied in the vertical and horizontal directions of the rail when the train is running. Then, in the structure of the conventional rail fixing tool 11, all the forces spreading in the lateral direction from the rail 1b act on the anchor bolt 14, and act to push the anchor bolt 14 rightward in FIG. Moreover, this force acts every time the stacker crane passes on the rail. Therefore, when high impact or high friction is applied like a crane rail, the anchor bolt 14 is bent for a long period of time.

In extreme cases, since the nut 16 is fixed to the concrete, the anchor bolt 14 is cut at the lower interface of the base plate 12. When such an accident occurs, the anchor bolt 14 must be replaced by crushing the concrete, and the crane cannot be used until the replacement is completed and the concrete is solidified. An object of the present invention is to provide a rail fixing tool and a rail fixing method which are excellent in durability and can firmly fix a rail to a concrete roadbed.

[0010]

The object according to the present invention is achieved by the following (1) and (2). (1) A rail fixing tool, wherein a base plate is inserted through an anchor bolt embedded at one end thereof in a concrete roadbed and fixed, and a lower flange of a rail placed on the base plate is fixed by a rail clip and a nut inserted through the anchor bolt. An elastic stopper is provided at a position corresponding to the lower surface of the base plate of the anchor bolt, and the rail clip and the base plate are moved along the axis of the anchor bolt by tightening the nut. A rail fixing device configured to be fastened and fixed to a rail.

(2) The elastic stopper is provided at a desired position of an anchor bolt for fixing the rail to a concrete roadbed, and a base plate on which the rail is mounted and a rail clip for holding down the rail are fixed by nuts with reference to the elastic stopper. A rail fixing method of forming a concrete roadbed by embedding one end of the anchor bolt and the elastic stopper after semi-fixing, and tightening the nut after forming the concrete roadbed to fix the rail to the concrete roadbed.

[0012]

According to the rail fixing tool and the rail fixing method, when the nut is tightened after the concrete roadbed is formed, the elastic stopper is deformed and the base plate and the rail clip move along the axis of the anchor bolt, that is, are fixed. The rail is moved toward the concrete floor, and the rail is clamped to the concrete floor by the rail clip.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 is a perspective view showing a state in which a rail fixing tool is temporarily fixed to a rail, FIG. 2 is a cross-sectional view of a main part showing a configuration of the rail fixing tool and a temporary fixing structure, and FIGS. 3 and 4 show a fixed state of the rail. It is sectional drawing of a principal part. In the description of the present embodiment, reference numerals and drawings used in the description of the conventional example are appropriately referred to.

First, the structure of the rail fixing tool 21 to which the present invention is applied and the mode of temporary fixing will be described with reference to FIGS. Since the structures and shapes of the rails 1a and 1b and the jig 3 for level adjustment are the same as those in the related art, the structure and fixing method of the rail fixing member 21 for one rail 1b will be described.

The level adjustment of the rail 1b is performed by placing the rail 1b on the jig 3 whose dimensions have been adjusted as shown in FIG. Then, the rail fixing member 21 is fixed to the rail 1b, but at this time, it is in a temporarily fixed state as described later. The installation interval of the jig 3 and the fixing interval of the rail fixture 21 are also set in the same manner as in the related art.

In this embodiment, the rail fixing member 21 includes:
An elastic stopper 22 made of an elastic material is used instead of the nut 16 described in the conventional example. The elastic stopper 22 is made of rubber or foamable resin in an annular shape, and before the nut 15 is screwed in as shown in FIG.
It is fitted into the anchor bolt 14.

Since the inner diameter of the elastic stopper 22 is set smaller than the outer diameter of the anchor bolt 14, the elastic stopper 22 is positioned elastically at a desired position, in other words, in a semi-fixed state. Therefore, although the positioning of the elastic stopper 22 can be freely changed, it does not move unless it is moved artificially.

The method of fixing the rail 1b will be described below. The elastic stopper 22 is fitted to the anchor bolt 14 and positioned at an appropriate position. This position is set in consideration of the thickness of the base plate 12, the rail clip 13, the thickness of the spring washer 17, the tightness of the nut 15, and the like. Further, a mark for the fixed position of the elastic stopper 22 may be uniformly attached to the anchor bolt 14 in advance.

Next, the base plate 12 is inserted through the anchor bolt 14 from above the elastic stopper 22 and then the rail clip 13 is inserted, and the nut 15 is tightened while holding the lower flange of the rail 1b. Although not shown in FIG. 2, a rail fixing member 21 is also attached to the left of the rail 1b.
Although the elastic stopper 22 is semi-fixed to the anchor bolt 14, it is tightly fitted into the anchor bolt 14, so that the base plate 12 does not slip down in the state of FIG.

In this way, before the concrete is poured into the lower part of the rail 1b, the level adjustment of the rail 1b and the mounting of the rail fixture 21 from both sides of the predetermined position are performed. At this point, the base plate 12 is mounted on the rail 1b.
From both right and left sides of the rail 1b. Next, concrete is poured into the lower part of the rail 1b, and the elastic stopper 22 and the anchor bolt 14 are solidified integrally with the concrete.

Next, the tightening of the rail 1b will be described. When the concrete is poured and solidified in the state of FIG. 2, the elastic stopper 22 is embedded in the concrete, but the elasticity is not impaired. Moreover, since the anchor bolt 14 is fixed to concrete, the nut 15 is tightened to
The base plate 12 and the base plate 12 move downward, though very slightly, and the fastening force between the base plate 12 and the concrete roadbed 2 increases. Since one end of the rail clip 13 is hung on the lower flange of the rail 1b, the rail 1b is fastened to the concrete roadbed 2 with a high fastening force.

That is, in the conventional structure, even if the nut 15 is tightened, the base plate 12 and the like are merely tightened to the nut 16, but in the present embodiment, tightening the nut 15 causes the elastic stopper 22 to be elastically deformed. With the downward movement of the base plate 12 and the rail clip 13, the rail 1b is directly tightened to the concrete roadbed.

Next, the force spreading laterally from the rail 1b will be described. The elastic stopper 22 is also elastically deformed in the horizontal direction, so that the anchor bolt 14 can bend in the horizontal direction at the lower interface of the base plate 12. Thus, a force that spreads laterally from the rail 1b can be elastically received. In the conventional structure, since the nut 16 is provided in contact with the lower surface of the base plate 12, the anchor bolt 14 is cut by a cutter, so to speak. Therefore, there is no way of applying a force like a cutter, and the anchor bolt 22 is not cut.

When the force that has spread laterally from the rail 1b disappears, the elastic stopper 22 can be deformed and the anchor bolt 14 has a restoring force, so that it returns to its original state. Therefore, accidents such as cutting of the anchor bolt 14 can be prevented beforehand, and safety and efficiency of transportation work can be improved.

Next, another shape of the elastic stopper 22 and another shape of the rail clip 13 will be described with reference to FIGS. That is, the elastic stopper 22 may be basically an annular body, and may be formed in a cylindrical shape as shown in FIGS. With this shape, when the anchor bolt 14 bends as described above, the bending angle becomes small, and the range in which the anchor bolt 14 can be restored is expanded.

The rail clip 13 may be one having elasticity in the vertical direction as shown in FIG. 3, and the base plate 12 may be a dish-shaped one as shown in FIG. it can. The combination of the elastic rail clip 13 and the dish-shaped base plate 12 is such that when the rail clip 13 moves or deforms in the lateral direction,
On the inner surface of the member to prevent further deformation.

Further, as the rail clip 13, FIG.
In this case, as shown in the left of the rail 1b, it is possible to apply a support foot provided downward and formed so as to have elasticity as a whole. Rail clip 1 shown in FIG.
The rail clip 13 shown to the left of the rail 1b in FIGS. 3 and 4 has an operation of elastically pressing down the rail 1b and an operation of preventing the nut 15 from being loosened. Such various rail clips 13 do not necessarily need to be used in pairs, but can be used in combination with different structures as shown in FIG.

[0028]

As described above, in the rail fixing device and the rail fixing method according to the present invention, an elastic stopper is provided on an anchor bolt having one end fixed to a concrete roadbed, and the rail is fixed on the basis of the elastic stopper. The base plate to be mounted and the rail clip for holding down the rail were positioned, and anchor bolts and elastic stoppers were embedded in the concrete roadbed.

Therefore, by tightening the nut screwed onto the anchor bolt at the upper part of the rail clip, the rail clip holding down the rail and the base plate move integrally to the concrete floor along the anchor bolt, and the rail is moved to the concrete floor. Firmly fixed. In addition, since the elastic stopper is provided on the lower surface of the base plate, the anchor bolt can be bent, so that it is not easily cut even when a large force is applied in the lateral direction, and the durability can be greatly improved. Furthermore,
The elastic stopper can be made of an inexpensive material such as rubber, and the simple structure of the entire fixture can reduce the cost.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a rail fixing tool and a rail fixing method to which the present invention is applied.

FIG. 2 is a sectional view of a main part showing a rail fixing tool and a rail fixing method.

FIG. 3 is a sectional view of a main part showing another structure of the rail fixing device.

FIG. 4 is a sectional view of a main part showing another structure of the rail fixing device.

FIG. 5 is a plan view showing a conventional rail laying.

FIG. 6 is a cross-sectional view of a main part showing rail level adjustment.

FIG. 7 is a sectional view of a main part showing a conventional rail fixing device.

[Explanation of symbols]

 1a, 1b rail 2 concrete roadbed 3 jig 11, 21 rail fixture 12 base plate 13 rail clip 14 anchor bolt 15, 16 nut 22 elastic stopper

Claims (2)

(57) [Claims] 1. A rail fixing device in which a base plate is inserted through an anchor bolt having one end embedded and fixed in a concrete roadbed, and a lower flange of a rail placed on the base plate is fixed by a rail clip and a nut inserted through the anchor bolt. An elastic stopper is provided at a position corresponding to the lower surface of the base plate of the anchor bolt, and the rail clip and the base plate are moved along the axis of the anchor bolt by tightening the nut, thereby moving the rail. A rail fixture configured to be fastened and fixed to a concrete track floor. 2. An elastic stopper is provided at a desired position of an anchor bolt for fixing a rail to a concrete roadbed,
After semi-fixing the base plate on which the rail is placed with reference to the elastic stopper and the rail clip for holding down the rail with a nut, a concrete roadbed is formed by embedding one end of the anchor bolt and the elastic stopper, A rail fixing method for fixing the rail to the concrete road bed by tightening the nut after the formation of the road bed.