JPH0618403U - Anti-vibration device with anti-buckle plate for sleepers in tracked orbit - Google Patents

Abstract

(57) [Abstract] [Purpose] In a railroad track, it reduces vibration and noise due to train running, suppresses track deviation, and prevents buckling due to outward expansion of rails in curved sections. To do. [Structure] A substantially gutter-shaped vibration damping device body is fitted to a concrete sleeper and fixed by a fixing means such as a pair of steel rods and a washer nut. A buckling prevention plate is interposed between both ends of the main body of the prevention device and the washer.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 In order to reduce vibration and noise due to train running and to suppress the progress of track deviations on a ballasted track (ballasted track), the present invention is mainly applied to a vibration isolator that has anti-vibration measures on existing concrete sleepers. This relates to an anti-vibration device with a sleeper anti-buckle plate in a tracked floor track that has the function of preventing the rail from expanding when the temperature rises and curving outwards in the curve in a curve section. is there.

[0002]

[Prior art]

 Since the rail expands and contracts due to temperature changes, axial pressure is generated, so the sleepers to which the rail is fastened are embedded and stabilized in the ballast bed. In particular, in recent years, long rails, which are made by welding standard length rails to make them seamless, have been widely adopted to reduce the damage to the tracks and improve the riding comfort of trains. In order to suppress the expansion and contraction effect due to the use of plastic, it is necessary to use PC sleepers that are heavy in weight and securely fastened, and it is necessary to use a sufficient amount of crushed stone as ballast ballast.

If the necessary conditions for these are not satisfied, the rail will expand or contract abnormally, or the rail will be buckled due to the axial pressure of the rail, thus impairing the safety of train operation. Especially on a steep curve, when installing a long rail, the lateral resistance of the track is important, and if it is insufficient, the track may bulge outside the curve and bend when the temperature rises.

In order to prevent this, conventionally, a method of attaching metal fittings or the like that is bitten in the roadbed to prevent relative movement between the ballast layer and the PC sleepers, for example, as shown in FIG. , The wing pieces 2 and 2 are fixed to both sides at right angles to the appropriate position of the sleeper 1, and the gate-shaped fitting 3 having fitting insertion holes (not shown) at both ends is fitted, A buckling prevention device in which a wedge rod 4 having a front end portion bent upward and a rear end portion bent downward is inserted into a fitting insertion hole of the fitting body 3 and fastened thereto [utility model registration No. 1074772 (Act No. 4747). No. 11845)] etc. In the figure, reference numeral 5 is a rail, and 6 is a ballast.

On the other hand, in order to reduce the vibration and noise caused by train traveling and to suppress the progress of track deviation, various anti-vibration measures such as lowering the elasticity of the track pad interposed between the rail and the sleepers are taken. Recently, elastic sleepers have been adopted for the concrete sleepers in the section of the tracked floor, but measures have been taken to reduce vibration and noise for existing concrete sleepers. There was no means.

[0006] Therefore, when taking measures to prevent vibration from being applied to the sleepers in the tracked section of the roadbed, the elastic sleepers should be removed after the existing concrete sleepers have a sufficient service life. However, there is a problem that the concrete sleepers are wasted because they have to be installed, and the conventional elastic sleepers are expensive and have poor productivity.

[0007] Therefore, the applicant of the present application has provided a vibration-damping device that can be easily mass-produced and can also be used for an existing concrete sleeper, in order to solve the above-mentioned conventional problems. . (See JP-A-3-25101)

[0008]

[Problems to be solved by the device]

 However, it is impossible to attach the anti-buckling device as described above to the concrete sleepers equipped with the vibration isolator including the elastic sleepers.

[0009]

[Means for Solving the Problems]

 Therefore, the present invention has been made in order to solve the above-mentioned problems, and an anti-vibration device with an anti-buckle plate for sleepers in a bedbed track is used by utilizing the above-mentioned anti-vibration device proposed by the applicant of the present application. It is intended to be provided, and is made of elastic material such as urethane rubber and formed into a substantially gutter shape with a horizontal part that abuts the lower surface of the concrete sleepers and a wall part that abuts the front and rear surfaces of the concrete sleepers. The anti-vibration device main body and a fixing means for fixing the anti-vibration device main body to the concrete sleepers, and the fixing means are a pair of steels inserted along the vicinity of the upper ends of both wall portions of the anti-vibration device main body. It is composed of a rod, a washer and a nut for connecting and fixing both ends of the pair of steel rods, and an intermediate portion near the upper ends of both wall portions of the vibration isolator main body is reinforced by connecting the both wall portions. It consists of a bolt for fixing, a nut for fixing the bolt, and a washer. Vibration damping device of the sleepers in the closed track bed trajectory reinforcing means is mounted, which is characterized in that it is interposed a buckling preventing plate between the end portions and the washer of the vibration damping device body.

[0010]

[Action]

 Vibration and noise caused by train running on the concrete sleepers are absorbed by the anti-vibration device main body, and lateral lateral force of the track bed is strengthened by the resistance of the outer ballast layer against the lateral force applied from the rail to the sleepers. It

[0011]

【Example】

 Hereinafter, the present invention will be described in detail with reference to illustrated embodiments. Reference numeral 11 denotes a vibration isolator main body which is a main part of the vibration isolator mainly attached to an existing concrete sleeper a, and includes a horizontal portion 13 that abuts a lower surface 12 of the concrete sleeper a and front and rear surfaces 14a and 14b of the concrete sleeper a. The abutting walls 15a and 15b are formed in a substantially gutter shape, and the length thereof is the same as the total length of the concrete sleeper a.

Inside the horizontal portion 13 of the vibration isolator main body 11, a plurality of narrow grooves 16 are formed in parallel along the longitudinal direction. In addition, a through hole (not shown) for inserting a steel rod 17, which will be described later, is formed in the vicinity of the upper ends of both wall portions 15a and 15b of the vibration isolator main body 11 over the entire length. A bolt insertion hole (not shown) is formed in the intermediate portion near the upper ends of the both wall portions 15a and 15b in a direction orthogonal to the both wall portions 15a and 15b above the through hole. It is set up.

Reference numeral 17 denotes a pair of steel rods, which are a part of a fixing means for fixing the vibration isolator main body 11 to the concrete sleeper a, and the total length thereof is larger than that of the vibration isolator main body 11. It is formed to be long, and when it is inserted into the through holes of both the wall portions 15a and 15b of the vibration isolator main body 11, both ends thereof are projected from both ends of the vibration isolator main body 11, and both ends are Is engraved with a screw groove (not shown) for screwing the nut 18.

Reference numeral 19 denotes a washer for connecting both ends of the pair of steel rods 17, respectively, and fitting holes (not shown) for fitting the steel rod 17 are provided at both ends of the washer 19. The washer 19 is drilled, and both ends of the front and rear steel rods 17 are connected by fitting the washers 19 to both ends of the steel rod 17 and screwing and tightening the nuts 18. And the steel rod 17 and the nut 18 constitute a fixing means.

Reference numeral 20 denotes a reinforcing bolt which is inserted into a bolt insertion hole formed in the vibration isolator main body 11 and has a length longer than the width of the vibration isolator main body 11. Reference numeral 21 denotes a nut screwed to the tip side of the bolt 20, 22 denotes a washer fitted to the head side and the tip side of the bolt 20, and the washer 22, the reinforcing bolt 20 and the nut 21 prevent Reinforcing means of the vibration device body 11 is configured.

Reference numeral 23 denotes a buckling prevention plate interposed between both ends of the vibration isolator main body 11 and the washer 19, which is made of an appropriate material such as steel, wood, or synthetic resin and has a height of The height of the sleeper end including the thickness of the horizontal portion 13 of the vibration isolator main body 11 is made substantially equal, and the width thereof is a width obtained by subtracting the allowable value of the sleeper spacing deviation from the sleeper arrangement interval. A fitting hole (not shown) for fitting the steel rod 17 is formed near the upper end of the buckling prevention plate 23 at a position corresponding to the steel rod 17.

[0017]

[Effect of device]

 As described above, according to the present invention, an elastic material such as urethane rubber is formed into a substantially gutter-like shape with a horizontal portion that abuts the lower surface of the concrete sleeper and a wall portion that abuts the front and rear surfaces of the concrete sleeper. The anti-vibration device body and a fixing means for fixing the anti-vibration device body to the concrete sleepers, and the fixing means is a pair of steels inserted along the vicinity of the upper ends of both wall portions of the anti-vibration device body. It is composed of a rod, a washer and a nut for connecting and fixing both ends of the pair of steel rods, and an intermediate portion near the upper end of both wall portions of the vibration isolator main body is for reinforcement for connecting both wall portions. In a vibration isolator for a sleeper on a roadbed track, to which a reinforcing means composed of a bolt, a nut fixing the bolt and a washer is attached, a buckling prevention plate is provided between both ends of the vibration isolator body and the washer. Since it intervenes, it becomes a concrete sleeper Vibration due Waru train travel is absorbed by the vibration damping device body noise, vibration, making it possible to reduce the noise, the progression of the track deviation less Kusuru it is possible.

Further, according to the present invention, since the anti-buckling plate is attached by using a steel rod, a washer and a nut which are fixing means for fixing the main body of the vibration isolator to the concrete sleepers, a special attachment part is provided. It is possible to form a wall that is substantially continuous in parallel with the rail at the end of the sleeper without the need for a rail. By fully utilizing the resistance of the ballast layer, it is possible to increase the lateral roadbed resistance force, so that it is possible to prevent the rail from moving in the lateral movement direction.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which a vibration damping device with a buckling prevention plate according to the present invention is attached to a concrete sleeper.

FIG. 2 is an enlarged side view of the same.

FIG. 3 is a plan view of a track on which the concrete sleepers are installed.

FIG. 4 is an enlarged side view showing a state in which a conventional buckling prevention device is attached to a concrete sleeper.

[Explanation of symbols]

 a Concrete sleepers 11 Anti-vibration device main body 13 Horizontal part of anti-vibration device main body 15a Wall part of anti-vibration device main body 15b Wall part of anti-vibration device main body 17 Steel rod 18 Nut 19 Washer 20 Reinforcing bolt 21 Nut 22 Washer 23 Buckling Prevention plate

Claims (1)

[Scope of utility model registration request] 1. A vibration isolator main body, which is made of an elastic material such as urethane rubber and is formed in a substantially gutter shape by a horizontal portion that abuts on the lower surface of the concrete sleeper and a wall portion that abuts on the front and rear surfaces of the concrete sleeper, And a pair of steel rods inserted along the vicinity of the upper ends of both wall portions of the vibration isolator body, and the pair of steel rods. And a nut for fixing the bolts, the intermediate part near the upper ends of both wall parts of the vibration isolator main body being formed of a washer and a nut for connecting and fixing both ends of the same. In a sleeper vibration isolator on a tracked floor track to which a reinforcing means composed of and a washer is attached, a buckling prevention plate is interposed between both ends of the vibration isolator body and the washer. Anti-buckle plate for sleepers on a moving bed track Anti-vibration device.