JPH0624001U - Fasteners for track girders and sleepers - Google Patents

Abstract

(57) [Summary] [Purpose] By fastening with fasteners made of highly elastic steel rods, the labor required for drilling bridge sleepers and refastening hook bolts is reduced. [Structure] An upper spring metal fitting formed by bending a steel rod rich in elasticity is placed on the upper surface of the floor board placed on the bridge sleeper, and the lower spring metal fitting is fitted with a connecting frame and is inserted into the bridge sleeper. The upper side applies the upper spring metal fitting to the corrugated recess, insert a wedge between the upper spring metal fitting and the floor plate, and fasten the front end of the upper spring metal fitting, the lower end of the lower spring metal fitting, the bridge girder, and the bridge sleeper for fastening. To do. [Effect] By fastening with a fastener made of a steel rod that is highly elastic, it is possible to reduce the labor required for drilling holes in bridge sleepers and refastening hook bolts, and prevent the strength of bridge sleepers from decreasing.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a metal fitting for fastening a bridge girder and a railroad sleeper on a track.

Conventionally, as a metal fitting for fastening a bridge girder and a bridge sleeper, an L-shaped hook bolt or an L-shaped twin bolt is formed by drilling a hole in the bridge sleeper as shown in FIGS. 10 and 11. I put my hand under the sleeper and inserted it, and tightened the upper part with a nut. Drilling a hole in a bridge sleeper with a heavy tool and passing a bolt on an unstable bridge girder alerts the worker to danger and may cause the metal fitting to fall. Furthermore, drilling a hole in the bridge sleeper reduces the strength of the bridge sleeper and causes wood chips to fall into the river, alienating the environment. Since the metal fittings do not take elasticity into consideration, vibrations that occur when trains pass through and loosening due to deterioration of bridge sleepers, etc., and it is necessary to constantly inspect the track and retighten the nuts, which requires a great deal of labor. Has the problem.

[0003]

[Problems to be solved by the device]

 The present invention has been made in view of the above problems of the conventional technology, and its purpose is to securely fasten the bridge sleeper by simple work without weakening the strength of the sleeper. The aim is to provide fasteners for track girders and bridge sleepers that can reduce the great amount of labor required for track maintenance and inspection.

[0004]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the fastening members of the bridge girders and bridge sleepers of the present invention are mounted on the floor plate with upper spring metal fittings in which the long sides of rectangular steel rods with high elasticity are bent in a corrugated shape. Placed on the upper surface of the bridge sleeper, a rectangular steel rod with high elasticity is bent into a wavy shape. Align the upper side of the connecting frame with the corrugated recess of the upper spring metal fitting, and insert a wedge between the rear end of the upper spring metal fitting and the floor plate. By pushing up the rear end of the spring fitting, the bridge sleepers and bridge girders are clamped and fastened between the front end of the upper spring fitting and the front end of the lower spring fitting.

In addition, by inserting a wedge provided with a recess for preventing slipping out into a gap between the rear end of the upper spring metal fitting and the floor plate, and pushing up the rear end of the upper spring metal at the position of the recess for preventing slipping out of the wedge, The wedges are prevented from coming off, and the bridge sleepers and bridge girders are sandwiched and fastened between the front ends of the upper and lower spring fittings.

[0006]

[Action]

 The fastening girders for bridge girders and bridge sleepers of the present invention are inserted from the end of the bridge sleepers by fitting the connecting frame to the lower spring fittings, and the front end of the lower spring fittings presses the underside of the girder and the rear end of the bridge sleepers. The upper side of the connecting frame is placed on the upper surface of the bridge sleeper so that the upper edge of the connecting frame is pressed against the corrugated recess of the upper spring metal fitting, and the wedge is placed between the rear end of the upper spring metal fitting and the floor plate. , And push up the rear end of the upper spring metal fitting to connect the bridge girder and bridge sleeper at four points: the front end of the upper spring metal fitting and the front end of the lower spring metal fitting, and the rear end of the upper spring metal fitting and the rear end of the lower spring metal fitting. Scissor and fasten.

Further, by inserting the wedge provided with the recess preventing recess, the upper side portion of the connecting frame fits into the recess of the wedge and prevents the wedge from coming off.

[0008]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. 1 to 9, in the upper spring fitting (1), a spring steel having a wire diameter of 22 mm is bent into a rectangular shape, and long side portions (1a) and (1b) are bent into a wavy shape, and end faces ( It was made by welding 1g) together.

The lower spring metal fitting (2) is made by bending spring steel having a wire diameter of 22 mm into a rectangular shape, bending the long sides (2 a) and (2 b) into a corrugated shape, and connecting the front end (2 c) to the connecting frame. Detachment prevention metal fittings (3) are welded and attached, and end faces (2e) are welded together to make them.

The connecting frame (4) is made by bending spring steel having a wire diameter of 22 mm into a rectangular shape and welding the end faces (4b) and (4c) together.

The floor plate (5) is formed by casting, forging, or machining a steel material.

The wedge (6) is made by machining a steel material. The wedges (7) are made by machining the recesses (7a) for preventing the wedges (6) from coming off.

The connecting frame (4) is fitted into the lower spring metal fitting (2) so as to be integrated, and is inserted from the bridge sleeper end portion (8c), and the front end portion (2c) of the lower spring metal fitting (2) is connected to the bridge girder (9). ), And the rear end (2d) is arranged so as to press the underside (8b) of the bridge sleeper, and the upper side (4a) of the connecting frame is placed on the upper surface (8a) of the bridge sleeper (1). ) Corrugated concave portions (1e), (1f), and insert the wedge (6) into the gap between the upper spring metal fitting rear end (1d) and the floor plate (5) to insert the upper spring metal fitting rear end. By pushing up (1d), the upper sleeper front end (1c) and the lower spring front end (2c) sandwich the bridge sleeper (8) and bridge girder (9), and fasten them.

Further, a wedge (7) provided with a recess (7a) for preventing removal is inserted into a gap between the upper spring metal fitting rear end portion (1d) and the floor plate (5), and the upper spring metal fitting rear end portion (1d) is inserted. The wedge (7) is pushed up at the position of the recess (7a) of the wedge (7) to prevent the wedge (7) from coming off, and the bridge sleeper (8) is secured by the front end (1c) of the upper spring fitting and the front end (2c) of the lower spring fitting. ) And the bridge girder (9).

Since the present invention is configured as described above, it has the following effects. Since it is not necessary to make a hole in the bridge sleeper, dangerous work on the bridge girder can be omitted, the strength of the bridge sleeper is prevented from decreasing, and no wood waste is generated, so the environment of the river is not isolated. Furthermore, since the fastening metal fittings are elastic, the fastening force is maintained by following the vibrations that occur when trains pass and the loosening due to the deterioration of the bridge sleepers. The labor can be reduced.

[Brief description of drawings]

FIG. 1 is an assembled perspective view of a fastening member for a bridge girder and a bridge sleeper.

FIG. 2 is an assembly plan view of a bridge girder and a bridge sleeper fastening fitting.

FIG. 3 is an assembled front view of a bridge girder and a bridge sleeper fastener.

FIG. 4 is a perspective view of an upper spring metal fitting of a bridge girder and a bridge sleeper fastener.

FIG. 5 is a perspective view of a lower spring metal fitting of a bridge girder and a bridge sleeper fastening fitting.

FIG. 6 is a perspective view of a connecting frame between a bridge girder and a bridge sleeper fastening fitting.

FIG. 7 is a perspective view of a floor plate of a bridge girder and a bridge sleeper fastener.

FIG. 8 is a perspective view of a wedge of a bridge girder and a bridge sleeper fastener.

FIG. 9 is a perspective view of wedges for preventing the bridge girder and the bridge sleeper fastener from coming off.

FIG. 10 is a perspective view of a conventional bridge sleeper fastening device.

FIG. 11 is a perspective view of a conventional bridge sleeper fastening device.

[Explanation of symbols]

 1 Upper Spring Metal Fitting 1a Upper Spring Metal Fitting Long Side 1b Upper Spring Metal Fitting Long Side 1c Upper Spring Metal Fitting Front End 1d Upper Spring Metal Fitting Rear End 1e Corrugated Recess 1f Corrugated Recess 1g End Face 2 Lower Spring Metal Fitting 2a Lower Spring Metal fitting long side 2b Lower spring metal fitting long side 2c Lower spring metal fitting front end 2d Lower spring metal fitting rear end 2e End face 3 Connection frame retaining metal fitting 4 Connection frame 4a Connection frame upper side 4b End surface 4c End surface 5 Floor plate 5a Floor plate top surface 6 Wedge 7 Wedge-prevention wedge 7a Wedge-prevention wedge recess 8 Bridge sleeper 8a Bridge sleeper upper surface 8b Bridge sleeper lower surface 8c Bridge sleeper end 9 Bridge girder

Claims (2)

[Scope of utility model registration request] 1. A long side portion (1) in which a steel rod having high elasticity is formed into a rectangular shape.
The upper spring metal fitting (1) obtained by bending a) and (1b) into a corrugated shape is placed on the upper surface (5a) of the floor plate (5), and the bridge sleeper upper surface (8
Placed in a), the long side (2
a) and (2b) are bent in a wavy shape, and a connecting frame retaining metal fitting (3) is bonded to the front end portion (2c) of the lower spring metal fitting (2),
The connecting frame (4) is fitted into the lower spring metal fitting (2) so as to be integrated, and is inserted from the bridge sleeper end portion (8c), and the upper side portion (4a) of the connecting frame is formed into the corrugated concave portion (1) of the upper spring metal fitting (1). 1e),
Apply to the position of (1f), the rear end of the upper spring metal fitting (1d)
By inserting a wedge (6) into the gap between the floor plate (5) and the rear end (1d) of the upper spring metal fitting, the front end (1c) of the upper spring metal fitting and the front end (2c) of the lower spring metal fitting are bridge pillows. Fastening metal fittings for track girders and bridge sleepers characterized by sandwiching and fastening the girder (8) and the bridge girder (9). 2. A wedge (7) having a recess (7a) for preventing slipping out is inserted into a gap between the upper spring metal fitting rear end portion (1d) and the floor plate (5), and the upper spring metal fitting rear end portion (1d). Wedge (7)
The wedge (7) is prevented from coming off by pushing up at the position of the concave portion (7a) of the upper spring metal fitting, and the front end portion (1) of the upper spring metal fitting is
The bridge girder and the bridge sleeper fastening fitting of the track according to claim 1, wherein the bridge sleeper (8) and the bridge girder (9) are clamped and fastened at c) and the lower spring fitting front end (2c).