JPH0638881Y2 - Anchor mounting structure of rail fastening device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anchor mounting structure for a fastening device for fastening a rail to a sleeper on a railway track.

[0002]

2. Description of the Related Art Conventionally, there are the following two mounting structures for fixing an anchor having legs on a sleeper. The anchor is a component that stops the rail from moving in the left-right direction, and is the most important component in the fastening device as a fulcrum of the fastening clip that holds the rail. Since the anchor is subjected to upward pulling force and lateral pressure from the rail in the left-right direction, it is strong in strength. The first mounting structure is such that an anchor is inserted into an embedding plug embedded in a sleeper or a hole formed in the sleeper, and the anchor is fixed with an adhesive. The second mounting structure is such that the anchor is fixed to the sleeper by bolting.

[0003]

However, the first mounting structure has a problem that it takes a long time for the adhesive to set and the railway track cannot be used immediately. Generally, maintenance of a railroad track is often performed in a short time by using the night when the train does not pass through. Therefore, it is preferable that the solidification time of the adhesive is short. The second mounting structure is
With conventional hexagon bolts, hexagon socket head bolts, countersunk bolts, etc., the bolts interfere with other parts of the fastening device, or
There is a problem that it is difficult to fix the anchor to the sleeper with a bolt because the anchor is small and a seat for fixing the bolt cannot be formed on the anchor.

[0004]

SUMMARY OF THE INVENTION The present invention firstly comprises an anchor having a fastening clip and a bolt screwed into the sleeper to attach the anchor to the sleeper, wherein the thread pitch of the bolt is Second, due to the structure in which the portion screwed into the sleeper is made rougher than the portion screwed into the anchor, secondly, the anchor having the fastening clip and the bolt screwed into the sleeper to attach the anchor to the sleeper are provided. The above problem is solved by a structure in which the screw of the portion of the bolt that is screwed into the anchor and the screw of the portion that is screwed into the sleeper are opposite screws.

[0005]

In order to attach the anchor of the first structure to the sleeper, first, screw the anchor into a portion where the screw pitch of the bolt is fine, and in a state where the bolt and the anchor are integrated, the portion where the pitch of the bolt is coarse is covered with the sleeper. Screw into. The screwing of the bolt brings the anchor closer to the sleeper, in contact with it and in a detented state. Further, as the bolt continues to be screwed into the sleeper, the bolt will be screwed into the sleeper and rotate with respect to the anchor that has been stopped. Since the screw pitch of the part screwed into the sleeper is coarser than the screw pitch of the part screwed into the anchor, the bolt moves excessively with respect to the sleeper by the difference in pitch during one rotation, Attract anchors to sleepers. This attractive force increases as the bolt is rotated. As a result, the anchor is firmly pressed and fixed to the sleeper.

To attach the anchor of the second structure to the sleeper, first, one screw portion of the bolt is slightly screwed into the sleeper. Then screw the anchor into the other threaded portion of the bolt. Then, while rotating the bolt and anchor together, screw it into the sleeper. The screwing of the bolt brings the anchor closer to the sleeper, in contact with it and in a detented state. Further, as the bolt continues to be screwed into the sleeper, the bolt will be screwed into the sleeper and rotate with respect to the anchor that has been stopped. Since the bolt of the bolt is screwed into the anchor and the screw of the bolt is screwed into the sleeper, the anchors are attracted to the sleeper while rotating. This attractive force is
Increases as you rotate the bolt. by this,
The anchor is firmly pressed and fixed to the sleeper.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. Although the mounting structure 30 of the embodiment fixes the anchor 33 for the pandroll type clip to the sleeper 32, it can be applied to the fixing of the anchors for other types of clips. Rail 31 (see FIGS. 4 and 5)
Is fixed to the sleeper 32 by a fastening device 40. A plastic plug 37 is embedded in the sleeper 32. Both screw bolts 38 are screwed into the embedding plug 37 by a procedure described later.

Both screw bolts 38 are anchors 33 made of casting.
Is a member for fixing to the sleeper 32. The pan roll clip (fastening clip) 34 is a member for elastically fastening the rail 31 to the sleeper 32. Rail 31
An insulator 35 is provided between the and pandroll clip 34. A hole 39 for rotating the bolt 38 itself is provided at an end of each of the screw bolts 38 (see FIGS. 6 to 8) on which screws having different screw pitches are formed.
(Square or hexagon) is formed. Instead of the holes, a cross groove, a single groove, a square boss, or a hexagonal boss may be formed.
A fine screw portion 41 and a coarse screw portion 42 are formed on both screw bolts 38. The thread pitch of the fine thread portion 41 is, for example, 2 mm, and the thread pitch of the rough thread portion 42 is, for example, 12 mm.

The convex portion 43 formed on the anchor 33
(See FIGS. 1 and 3) is the shoulder portion 4 of the sleeper 32.
4, which is a rotation stopping portion of the anchor 33 with respect to the sleeper 32. An elastic body 36 (see FIG. 4) is provided between the rail 31 and the sleeper 32.

Next, the anchor 3 by means of the double screw bolt 38
How to attach No. 3 will be described. First, the fine screw portion 41 of the double screw bolt 38 is screwed into the female screw 46 of the anchor 33 from the lower surface 45 of the anchor 33 to previously connect the double screw bolt 38 and the anchor 33. The screwing is performed until the bolt 38 projects into the hole 47 into which the pandroll clip 34 is inserted.

Next, while rotating the anchor 33 and the double screw bolt 38 together, the rough screw portion 4 of the double screw bolt 38 is rotated.
2 is screwed into the female screw 48 of the embedding plug 37. At this time, since the anchor 33 is located above the shoulder portion 44 of the sleeper 32, the anchor 33 can rotate integrally with the screw bolts 38 without interfering with the sleeper 32. As the screw bolts 38 are screwed in, the anchor 33 approaches the embedding plug 37, and the convex portion 43 of the anchor 33 faces the shoulder portion 44 of the sleeper 32. This facing prevents the anchor 33 from rotating together with the screw bolts 38.

Then, the tip of the tool (box spanner) is inserted into the tool insertion hole 49 formed in the anchor 33, and is engaged with the hole 39 of the both screw bolts 38 (see FIG. 8). Then, the tool is rotated. As a result, both screw bolts 38 rotate with respect to the anchor 33 and the embedding plug 37, the fine screw part 41 moves in the direction of coming out of the lower surface 45 of the anchor 33, and the rough screw part 42 moves to the embedding plug 37. Screwed in.

Each time the double screw bolt 38 rotates, the anchor 33 approaches the embedding plug 37 by the difference in pitch between the two screw portions 41 and 42 of the double screw bolt 38 (for example, 10 mm). When the double screw bolt 38 is rotated, the double screw bolt 38 brings the anchor 33 into close contact with the sleeper 32 and press-contacts and fixes it. Finally, the rail 31 is fastened to the sleeper 32 by tapping the hand roll clip 34 into the hole 47 of the anchor 33.

Next, a mounting structure of another embodiment will be described. Since this mounting structure 130 (see FIGS. 15 to 23) is the same as the structure shown in FIGS. 1 to 14 except for the both-screw bolts 138 and the parts related to the bolts, the same parts are not shown in FIG. The reference numerals of 1 to FIG. 14 are shown by adding 1 to the head, and the description of the structure will be omitted. A left-hand threaded portion 150 and a right-handed threaded portion 151 are formed at both ends of each of the screw bolts 138 (see FIGS. 15 to 20). The left and right threaded portions 150 and 151 have different thread pitches, and the left threaded thread 150 has a thread pitch of, for example, 2 mm.
The screw pitch of the right screw 151 is, for example, 12 mm. The left and right screws 150 and 151 may have the same screw pitch.

Next, how to attach the anchor 133 with the double screw bolt 138 will be described. First, double screw bolt 13
The right-hand threaded portion 151 of No. 8 is slightly screwed into the sleeper. Then, the anchor 133 is screwed into the left-hand threaded portion 150. This screwing is performed up to the vicinity of the hole 147 into which the pan roll clip 134 is inserted.

Next, the anchor 133 and the double screw bolt 13
The right screw portion 151 of the both screw bolts 138 is screwed into the female screw 153 of the embedding plug 137 while rotating 8 together.
At this time, since the anchor 133 is located above the shoulder portion 144 of the sleeper 132, the sleeper 13
It is possible to rotate integrally with the two-screw bolt 138 without interfering with 2. Double screw bolt 1
With the screwing of 38, the anchor 133 approaches the embedding plug 137, and the convex portion 143 of the anchor 133 faces the shoulder portion 144 of the sleeper 132. Due to this facing, the anchor 133 cannot rotate to the right integrally with the screw bolts 138.

Therefore, the tip of the tool (box spanner) is inserted into the tool insertion hole 149 formed in the anchor 133, and is engaged with the hole 139 of the both screw bolts 138 (see FIG. 20). Then, rotate the tool to the right. As a result, the screw bolts 138 rotate clockwise relative to the anchor 133 and the embedding plug 137. The anchor 133 and the embedding plug 13 are equal to the sum of the screw pitches of the left and right screw parts 150 and 151 of the double screw bolt 138 per one rotation of the double screw bolt.
7, the two screw bolts 138 bring the anchor 133 into close contact with the sleeper 132 and press-fit it. Finally, a rail (not shown) is fastened to the sleeper 132 by hitting a hand roll clip (not shown) into the hole 147 of the anchor 133.

In the double-threaded bolt, the portion screwed into the anchor may be right-handed and the portion screwed into the sleeper may be left-handed. In this case, it goes without saying that the anchors are attached to the sleepers by rotating both screw bolts to the left.

[0019]

The mounting structure of claims 1 and 2 utilizes the pitch difference between both screw bolts having different thread pitches (claim 1) or the reverse screw (claim 2), and the anchor of the fastening device. Since the anchor is attached to the sleeper, the anchor can be easily attached, reliably and quickly. Furthermore, there is an effect that the maintenance management of the railway track can be easily performed.

[Brief description of drawings]

FIG. 1 is a sectional front view of a mounting structure of the present invention.

FIG. 2 is a sectional view taken along the line 2-2 in FIG.

FIG. 3 is a plan view showing a state in which the anchor is fixed to the sleeper using a double screw bolt.

FIG. 4 is a front view of the pandroll type rail fastening device having a mounting structure, and is a diagram partially shown in section.

FIG. 5 is a plan view of a pandroll type rail fastening device.

FIG. 6 is a front view of a double screw bolt.

FIG. 7 is a side view of FIG.

FIG. 8 is a plan view of FIG.

FIG. 9 is a front view of the embedding plug, which is a cross-sectional view.

10 is a cross-sectional view taken along the line 10-10 of FIG.

FIG. 11 is a plan view of the embedding plug.

FIG. 12 is a front view of the anchor, which is a cross-sectional view.

13 is a sectional view taken along the line 13-13 of FIG.

FIG. 14 is a plan view of the anchor.

FIG. 15 is a front view of a mounting structure of another embodiment, which is a cross-sectional view.

16 is a sectional view taken along the line 16-16 in FIG.

FIG. 17 is a plan view showing a state in which the anchor is fixed to the sleeper using a double screw bolt.

FIG. 18 is a front view of a double screw bolt.

FIG. 19 is a side view of FIG.

20 is a plan view of FIG. 18. FIG.

FIG. 21 is a front view of the anchor, which is a cross-sectional view.

22 is a sectional view taken along the line 22-22 of FIG.

FIG. 23 is a plan view of the anchor.

[Explanation of reference numerals] 30,130 Mounting structure 31 Rails 32,132 Sleepers 33,133 Anchors 34 Pan roll clips (fastening clips) 38,138 Double screw bolts (bolts) 41 Fine screw parts 42 Coarse screw parts 150 Left screw part (Screw screwed into anchor) 151 Right screw thread (Screw screwed into sleeper)

Claims (2)

[Scope of utility model registration request] 1. An anchor provided with a fastening clip and a bolt for screwing the anchor to the sleeper to attach the anchor to the sleeper, and a screw pitch of the bolt is screwed into the sleeper from a portion screwed into the anchor. An anchor mounting structure for a rail fastening device, characterized in that the part is roughened. 2. An anchor with a fastening clip and a bolt screwed into the sleeper to attach the anchor to the sleeper, the screw of the portion of the bolt screwed into the anchor and the screw into the sleeper. An anchor mounting structure for a rail fastening device, characterized in that the screw and the screw are reverse screws.