JPH06257111A - Bridge sleeper fastening device of screw-less type - Google Patents

Abstract

PURPOSE:To reduce the working labor and prevent fastening force from lowering due to repetitive vibration by trains by pressing a bridge sleeper with bridge girder by means of a clip and fastening the clip with a locking metal fitting. CONSTITUTION:A locking metal fitting 5 formed of a flexural steel bar bent into a square shape is integratedly fitted into a clip 4 formed by bending a flexural steel bar, and fitted on a bridge sleeper 6. An upper face of bridge sleeper 6 and a lower face of bridge girder flange 7 are pressed by an upper side forward end and lower side forward end of clip 4, and a lower side of locking metal fitting 5 is brought into contact with a recess of lower side middle part of clip 4. An upper side of locking metal fitting 5 is moved to a recess of upper side middle part of clip 4 to fasten the clip 4 by the fitting 5 so as to fasten the bridge sleeper 6 to the bridge girder flange 7. AccordingIy, the drilling work of the sleeper 6 and re-fastening work of hook bolt are obviated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-screw type bridge sleeper fastening device for fastening sleepers to a bridge girder.

[0002]

2. Description of the Related Art A conventional bridge sleeper fastening device is a screw fastening system using an L-shaped hook bolt shown in FIG. 9, and a hook bolt insertion hole is formed perpendicularly to the upper surface of the bridge sleeper. Necessary, it requires a high level of skill to make a hole, the corrosion of the bridge sleepers is promoted from around the hole,
Also, because the hook bolts relax due to repeated train vibrations, the tightening force between the bridge sleepers and bridge girder flanges decreases, and the hook bolts come off the bridge girder flanges.Check the tightening status of the hook bolts and tighten them. A great deal of labor and money are spent on the repair work.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems of the prior art, and an object thereof is to hook a bridge sleeper without making a hole. A screwless bridge that can reduce the enormous effort and cost spent for checking the tightening status of hook bolts and re-tightening work without reducing the tightening force between the bridge sleepers and bridge girder flanges caused by loosening bolts. It is intended to provide a sleeper fastening device.

[0004]

In order to achieve the above-mentioned object, a screw-less bridge type sleeper fastening device according to the present invention has a substantially elastic steel rod whose central portion is bent in a U shape.
Moreover, the upper end and the upper end of the U-shaped steel bar are bent in a V shape, and the lower end and the lower end are bent in a V shape.
In addition, the upper side middle part and the lower side middle part are bent in a wavy shape, and a clip having a symmetrical shape on the center line XX is fitted with a fastener made by bending a steel rod rich in elasticity into a rectangular shape. Apply the clip and the stopper to the clip receiving part of the metal fitting on the front end of the upper side of the clip, insert it from the end of the bridge sleeper into the bridge sleeper, and arrange so that the front end of the lower side of the clip presses the underside of the bridge girder flange. Apply the lower side of the stopper to the corrugated recess in the middle of the lower side of the clip, and clip the upper side of the stopper around the contact point between the lower side of the stopper and the corrugated recess in the middle of the lower side of the clip. By moving to the corrugated recess in the middle of the upper side, the clip is tightened with the stopper, and the front end of the upper side of the clip presses the upper surface of the bridge sleeper through the clip receiving part of the receiving metal. Only, in which it was fastened to hold down the bridge girder flange underside with lower front end of the clip.

Further, by inserting the underlay adjusting plate between the receiving metal fitting and the upper surface of the bridge sleeper, and by inserting the adjusting plate having the recessed portion for preventing slipping out into the clip receiving portion of the receiving metal fitting, the bridge girder flange It can be installed in response to changes in the distance from the lower surface to the upper surface of the bridge sleeper.

[0006]

According to the bridgeless sleeper fastening system of the present invention, the clip and the fastening metal fitting which are fitted into the clip and are integrated with each other are applied to the clip receiving portion of the front end of the upper edge of the clip, and the bridge receiving portion. Insert it into the bridge sleeper from the end of the clip, place it so that the front end of the clip bottom side presses the bottom surface with the bridge girder flange, and apply the bottom side of the fastener to the corrugated recess in the middle of the bottom side of the clip. Tighten the clip with the stopper by moving the upper side of the stopper to the corrugated concave in the middle of the clip, centering on the contact point with the corrugated concave in the middle of the lower side of the clip. , The upper end of the clip holds the upper surface of the bridge sleeper through the clip receiving portion of the receiving fitting, and the lower end of the clip holds the lower surface of the bridge girder flange for fastening.

Further, an underlay adjusting plate is inserted between the receiving metal fitting and the upper surface of the bridge sleeper, and an adjusting plate having a recess for preventing the insertion is inserted into a clip receiving portion of the receiving metal fitting, and from the lower surface of the bridge girder flange. Corresponding to changes in the distance to the upper surface of the bridge sleeper, it can be installed at any distance.

[0008]

Embodiments of the present invention will be described with reference to the drawings. 1 to 8, the clip (4) is
A spring steel having a wire diameter of 22 mm has a substantially central portion (1) bent into a U shape, and the upper side front end portion (2a), the upper side rear end portion (2b), and the lower side front end portion (3a) of the spring steel bent into a U shape. A clip A formed by bending the rear end portion (3b) of the lower side into a V shape and bending the upper middle portion (2c) and the lower middle portion (3c) into a wavy shape, and a center line XX. Make a left and right symmetrical clip B, and attach the end face (2
The clip A and the clip B are integrally formed by welding at e) and the end face (3e) of the front end of the lower side.

The fastener (5) is made by bending spring steel having a wire diameter of 22 mm into a rectangular shape, and the end face (5c) of the upper side portion (5a).
And the end face (5d) of the lower side (5b) are welded.

The receiving fitting (8) is formed by casting, forging or machining a steel material, and is provided with a clip receiving portion (8a).

The adjusting plate (9) is made by machining a steel material, and is provided with a recess (9a) for preventing slipping out.

The underlay adjusting plate (10) is made by machining a steel material.

The clip (4) and the fastener (5), which are formed by fitting the fastener (5) into the clip (4), are connected to the clip (4) of the upper end of the front edge (2a) of the clip (4). Apply to the section (8a) and the end of the bridge sleeper (6
Insert from a) into the bridge sleeper (6), arrange so that the lower end front end (3a) of the clip (4) presses the underside (7a) of the bridge girder flange, and fix the lower end (5b) of the fastener (5). The corrugated concave portion (3) of the lower middle portion (3c) of the clip (4)
d), and the corrugated concave portion (3) of the lower side portion (5b) of the fastener (5) and the intermediate portion (3c) of the lower side of the clip (4).
Centering on the contact point (3f) with d), the upper side portion (5a) of the fastener (5) is connected to the middle portion (2c) of the upper side of the clip (4).
Move to the corrugated concave part (2d) of
Tighten the clip (4) with, and the front end portion (2a) of the upper side of the clip (4) is the clip receiving portion (8a) of the receiving metal fitting (8).
The upper surface of the bridge sleeper (6b) is pressed down via the lower end of the lower edge of the clip (4) (3a), and the lower surface of the bridge girder flange (7
Hold down a) and tighten.

Further, the underlay adjusting plate (10) is inserted between the receiving metal fitting (8) and the upper surface (6b) of the bridge sleeper, and the adjusting plate (9) is provided with a recess (9a) for preventing slipping out. ) Is inserted into the clip receiving part (8a) of the receiving metal fitting (8),
The lower end (3a) of the lower side of the clip (4) is arranged so as to press the lower surface (7a) of the bridge girder, and the lower side (5b) of the fastener (5) is waved to the middle part (3c) of the lower side of the clip (4). Apply to the concave portion (3d) of the shape, centering on the contact point (3f) between the lower side portion (5b) of the fastener (5) and the corrugated concave portion (3d) of the lower side middle portion (3c) of the clip (4). ,
The upper side portion (5a) of the fastener (5) is moved to the corrugated recess (2d) of the upper middle portion (2c) of the clip (4), and the clip (4) is tightened with the fastener (5) to 4) The front end (2a) of the upper side presses the bridge sleeper upper surface (6b) through the clip receiving part (8a) of the receiving metal fitting (8), and the bridge girder flange is attached at the front end (3a) of the lower side of the clip (4). The lower surface (7a) can be pressed down to accommodate changes in the distance from the lower surface of the bridge girder flange (7a) to the upper surface of the bridge sleeper (6b), and can be installed at any distance.

Since the present invention is configured as described above, it has the following effects. Since it is a screwless type instead of a screw type, it is not necessary to make a hole in the sleeper, and it is possible to reduce a great amount of labor and cost required for drilling work, and to prevent corrosion of the bridge sleeper from around the hole. Further, since the hook bolt is not used, it is possible to reduce a great amount of labor and cost for confirming the tightening state of the hook bolt and re-tightening work. Further, since the spring steel is used for the clip, it follows the repetitive vibration of the train, prevents the clip from loosening, and does not disengage from the bridge girder flange, preventing the fastening force from decreasing.

[Brief description of drawings]

FIG. 1 is a perspective view of a non-screw type bridge sleeper fastening device.

FIG. 2 is an assembly plan view of a screw-less bridge sleeper fastening device.

FIG. 3 is an assembled front view of a screw-less bridge sleeper fastening device.

FIG. 4 is a perspective view of a clip of a screw-less bridge sleeper fastening device.

FIG. 5 is a perspective view of a fastener of a screwless type bridge sleeper fastening device.

FIG. 6 is a perspective view of a receiving metal fitting of a bridge-less sleeper fastening device of a screwless type.

FIG. 7 is a perspective view of an adjusting plate of a bridge sleeper fastening device of a screwless type.

FIG. 8 is a perspective view of an underlay adjustment plate of a screw-less bridge sleeper fastening device.

FIG. 9 is a perspective view of a conventional bridge sleeper fastening device.

[Explanation of symbols]

 1 Approximately the central part of the steel bar 2a Upper edge front end of the clip 2b Upper edge rear end of the clip 2c Upper edge middle part of the clip 2d Waveform concave portion of the upper edge middle part of the clip 2e Upper edge front end of the clip 3a Lower edge front of the clip 3b Clip bottom rear end 3c Clip bottom middle 3d Clip bottom middle corrugated recess 3e Clip bottom front end face 3f Contact 4 Clip 5 Stopper 5a Stopper 5b Stopper 5b Stopper 5c Upper edge of stopper 5d Lower edge of stopper 6 Bridge sleeper 6a Edge of sleeper 6b Bridge sleeper upper surface 7 Bridge girder flange 7a Bridge girder flange lower surface 8 Receiving metal fitting 8a Clip receiving portion 9 Adjusting plate 9a For preventing slipping Recessed part 10 Underlay adjustment plate

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Noriaki Higashi Inventor Noriaki Higashi 2-16-16 Matsuzaki-cho, Abeno-ku, Osaka 5 Building Room 402 (72) Inventor Masatake Yokota 814 Yaehata Shishito-cho, Himeji City, Hyogo Prefecture (72) Inventor Manabu Araki 6-4-4 Tsukigaoka, Nishi-ku, Kobe City, Hyogo Prefecture

Claims (2)

[Claims] 1. A steel rod which is highly elastic and has a substantially central portion (1) bent into a U-shape, and a U-shaped bent steel bar having an upper front end (2a) and an upper rear end (2b), Lower edge (3
a) and the rear end portion (3b) of the lower side are bent in a V shape, and the middle portion (2c) of the upper side and the middle portion (3c) of the lower side are bent in a wavy shape, and are symmetrical with respect to the center line XX. The clip (4) and the fastener (5) integrated by fitting the fastener (5) formed by bending a steel rod having high elasticity into a rectangular shape to the clip (4) are 2a) Clip receiving part (8) of the metal fitting (8)
a), insert it from the bridge sleeper end (6a) into the bridge sleeper (6), and lower the front end (3) of the lower side of the clip (4).
a) is arranged so as to press the underside (7a) of the bridge girder flange, and the bottom side (5b) of the fastener (5) is clipped (4).
Apply to the corrugated concave part (3d) of the lower middle part (3c), and the lower side part (5b) of the fastener (5) and the clip (4).
Centering on the contact point (3f) with the corrugated recess (3d) of the lower middle part (3c), the upper side (5
By moving a) to the corrugated recess (2d) of the upper middle portion (2c) of the clip (4), the clip (4) is tightened with the fastener (5), and the front end of the upper side of the clip (4) ( 2a) presses the bridge sleeper upper surface (6b) through the clip receiving portion (8a) of the receiving metal fitting (8),
At the front end of the lower side of the clip (4), the underside of the bridge girder flange (7
A non-threaded nail sleeper fastening device characterized by holding down a) and fastening. 2. Receiving metal fittings (8) and bridge sleeper upper surface (6b)
Insert the underlay adjusting plate (10) between and, and insert the adjusting plate (9) provided with the convex portion (9a) for preventing slipping out into the clip receiving portion (8a) of the receiving metal fitting (8). By doing so, from the bridge girder flange lower surface (7a) to the bridge sleeper upper surface (6
The bridgeless sleeper fastening device of the screwless nail type according to claim 1, characterized in that the device can be attached in response to a change in the interval up to b).