JP3222785U - Boltless buckling prevention device - Google Patents

Abstract

Provided is a boltless buckling prevention device having a configuration that does not require the use and adjustment of bolts and nuts during installation, maintenance and management of the device, yet can be firmly fixed to a sleeper. To do. A boltless buckling prevention device (1) includes a left resistor plate (2) and a right resistor plate (3) arranged in a pair of left and right sides of a sleeper (S), and an upper portion of the left resistor plate (2) and the right resistor plate (3). A plate spring 4 that is linked, a lower plate 5 that is linked under the left resistance plate 2 and the right resistance plate 3, and a taper block 6 that is inserted between the sleeper S and the plate spring 4. [Selection] Figure 2

Description

  The present invention relates to a device for preventing buckling and movement of a rail by mounting a member that sandwiches an upper surface and a lower surface of a sleeper.

  It is important to prevent rail buckling in order to ensure the safety of railway vehicle operation in railways. In recent years, various buckling prevention devices for use in ballast road beds have been developed. As a method for fixing these devices to the sleeper, means for disposing a pressing member at the upper and lower portions of the end of the sleeper and fixing them with a fastener (see Patent Documents 1 and 2) are exclusively employed. These devices prevent the buckling of the rail by adding further resistance to the bed resistance of the sleeper and strengthening the bed resistance.

Japanese Patent No. 4512661 Japanese Patent No. 5852762

  In order to add a road bed resistance force to the sleeper, it is necessary to firmly fix the buckling prevention device and the movement prevention device to the sleeper and to keep the tightened state constant by tightening. Generally, bolts and nuts are used as the fasteners for fixing the pressing member. Bolts and nuts are excellent members in terms of procurement as parts due to the market distribution and abundant variations in shape. However, on the other hand, there is a tendency that a slight change is likely to occur in the tightened state due to tightening in places where vibration and impact are large.

  Therefore, the present invention does not require the use and adjustment of bolts and nuts during installation, maintenance and management of the device, yet it is a boltless type buckling prevention with a structure that can be firmly fixed to the sleeper. An object is to provide an apparatus.

  The boltless type buckling prevention device of the present invention comprises a left resistor plate and a right resistor plate arranged in a pair on the left and right sides of the sleeper, and both resistor plates above the left resistor plate and the right resistor plate. A plate spring, a lower plate that links the resistance plates at the lower part of the left resistance plate and the right resistance plate, and a taper block that is inserted between the sleeper and the plate spring; The intermediate portion includes a receiving surface, and it is possible to define a surface on which the sleeper is placed according to the standard of the sleeper, and by locking the taper block in a state of being engaged with the leaf spring, The whole is fixed to the sleeper by the elastic force of the leaf spring.

  According to the boltless type buckling prevention device of the present invention, the entire device is fixed to the sleeper by the elastic force of the leaf spring. In this apparatus, since the means for exerting the elastic force of the leaf spring is to insert a tapered block between the leaf spring and the sleeper, the attachment is easier than in the conventional tightening with a bolt. Further, if the taper block is inserted to a predetermined position, the degree of tightness by appropriate tightening can be obtained. Therefore, the operator need only visually confirm the position of the taper block, and does not need to be aware of the degree of tightness. Furthermore, tightening with conventional bolts tends to cause the phenomenon that the tightening force changes due to vibration and impact of the track, but in this device, the leaf spring absorbs vibration and impact, so the tightness of tightening is kept constant. Can keep.

It is a perspective view of the boltless type buckling prevention apparatus of this invention. It is an expansion perspective view of the boltless type buckling prevention device of the present invention. It is an exploded perspective view of the boltless type buckling prevention device of the present invention. It is a front view of the boltless type buckling prevention apparatus of this invention. It is a front view of the boltless type buckling prevention apparatus of this invention.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view of a boltless buckling prevention device 1 of the present invention, and is an example displayed together with a sleeper S and a rail R. FIG. FIG. 2 is a perspective view of the boltless buckling prevention device 1 of the present invention, and the sleepers S are indicated by virtual lines. The boltless buckling prevention device 1 includes a left resistance plate 2 and a right resistance plate 3 arranged in a pair on the left and right sides of the sleeper S, and a leaf spring that is linked at the upper part of the left resistance plate 2 and the right resistance plate 3. 4, a lower plate 5 linked at the lower part of the left resistor plate 2 and the right resistor plate 3, and a taper block 6 inserted between the sleeper S and the leaf spring 4.

  FIG. 3 is an exploded perspective view of the boltless buckling prevention device 1 of the present invention. The left resistance plate 2 includes a flat plate portion 2a that is restrained by crushed stones to prevent the entire boltless buckling prevention device 1 from moving in the longitudinal direction of the sleeper S, and a flat spring 4 through which the flat spring 2 is inserted. 4 is provided with a leaf spring insertion port 2b for locking the end of 4, and a lower plate insertion port 2c for inserting the lower plate 5 and locking the end of the lower plate 5. Similar to the left resistance plate 2, the right resistance plate 3 includes a flat plate portion 3a restrained by crushed stone to prevent the entire boltless buckling prevention device 1 from moving in the longitudinal direction of the sleeper S, and a plate A leaf spring insertion port 3b through which the spring 4 is inserted and the end of the plate spring 4 is locked, and a lower plate insertion port 3c through which the lower plate 5 is inserted and the end of the lower plate 5 is locked. Prepare.

  The leaf spring 4 of the present embodiment includes a leaf spring end portion 4a that is engaged with the leaf spring insertion port 2b of the left resistance plate 2 and a leaf spring end portion 4b that is engaged with the leaf spring insertion port 3b of the right resistance plate 3. It is configured. The shape of the leaf spring 4 in this embodiment is such that the leaf spring end portion 4a faces upward and the leaf spring end portion 4b faces downward. Further, the leaf spring insertion port 2b of the left resistance plate 2 and the leaf spring insertion port 3b of the right resistance plate 3 of the present embodiment have the same shape as each other and are downward even if the end of the plate spring 4 is upward. However, the end of the leaf spring 4 can be locked. By forming the shape of the leaf spring 4 of the present invention and the leaf spring insertion port 2b of the left resistance plate 2 and the leaf spring insertion port 3b of the right resistance plate 3 in this manner, the leaf spring 4 with the leaf spring end 4b as a fulcrum is formed. Can be easily inserted, and can be inserted from the direction in which the leaf spring 4 can be easily inserted. Here, the shape of the end of the leaf spring 4 of the present invention and the shape of the leaf spring insertion port 2b of the left resistance plate 2 and the shape of the leaf spring insertion port 3b of the right resistance plate 3 can be locked to each other. Well, it is not limited to the shape shown in this embodiment.

  The lower plate 5 of this embodiment includes a lower plate end portion 5a that is locked to the lower plate insertion port 2c of the left resistance plate 2, and a lower plate end portion 5b that is locked to the lower plate insertion port 3c of the right resistance plate 3. The shape is the same. Similarly, the lower plate insertion port 2c of the left resistor plate 2 and the lower plate insertion port 3c of the right resistor plate 3 have the same shape. Here, the shape of the end of the lower plate 5 of the present invention and the shape of the leaf spring insertion port 2b of the left resistance plate 2 and the shape of the leaf spring insertion port 3b of the right resistance plate 3 can be locked to each other. Well, it is not limited to the shape shown in this embodiment.

  The tapered block 6 of the present invention includes a base portion 6a, a tip portion 6b, and a leaf spring locking portion 6c, and is formed so that the thickness decreases from the base portion 6a to the tip portion 6b. Further, the leaf spring locking portion 6 c is formed in a concave shape in accordance with the width of the leaf spring 4. The taper block 6 is inserted between the leaf spring 4 and the sleeper S by hitting the base portion 6a with a hammer or the like, and is locked in a state where the leaf spring locking portion 6c and the leaf spring 4 are fitted. The leaf spring 4 exerts an elastic force in the vertical direction from the upper surface of the sleeper S when the tapered block 6 is inserted. Although illustration is omitted, by processing the contact surface of the taper block 6 with the sleeper S into a sawtooth shape, the frictional force between the taper block 6 and the sleeper S is improved, and the taper block 6 is unexpected. The effect which prevents omission of can be expected. Further, the taper block 6 is removed by inserting a member having a thickness and an angle larger than that of the taper block 6 between the leaf spring 4 and the sleeper S and lifting the leaf spring 4.

4 and 5 are front views of the boltless buckling prevention device 1 of the present invention, in which the sleeper shape and the vertical direction of the lower plate 5 are different. Hereinafter, the sleeper illustrated in FIG. 4 is referred to as S ₁ , and the sleeper illustrated in FIG. 5 is referred to as S ₂ .

The intermediate portion 5c of the lower plate 5 of the present invention is formed so that one surface can be used as a sleeper platform and the other surface can be used as a sleeper tray. The surface on which the sleeper is placed can be determined according to the sleeper standard. As sleepers S ₁ shown in FIG. 4, if the sleeper is not high standards, the receiving surface of the intermediate portion 5c in the bottom may be installed as stand, also in FIG. 5 as sleepers S ₂ indicating, if sleepers have high standards, and the receiving surface of the intermediate portion 5c above, it may be installed as saucer. In addition, the boltless buckling prevention device 1 of the present invention can be applied to sleepers of other standards by preparing a lower plate having a changed shape.

  Although the material of the leaf | plate spring 4 of this invention is not limited, It is preferable that it is stainless steel as a metal plate which requires elasticity, and the austenitic stainless steel plate excellent also in corrosion resistance and rust prevention property is more preferable. Moreover, although the material of the left resistance plate 2, the right resistance plate 3, the lower plate 5, and the taper block 6 is not limited, since it is mounted on the sleeper S, ductile cast iron having durability against impact and vibration is preferable. Ductile cast iron is excellent in rust prevention and weather resistance, and can withstand long-term use.

  The boltless buckling prevention device 1 of the present invention is fixed to the sleeper S by the elastic force of the leaf spring 4 with the above configuration. In the boltless type buckling prevention device 1, the means for exerting the elastic force of the leaf spring 4 is to insert a tapered block 6 between the leaf spring 4 and the sleeper S. And easy to install. Further, if the taper block 6 is inserted to a predetermined position, the degree of tightness by appropriate tightening can be obtained. Therefore, the operator only needs to visually confirm the position of the taper block 6 and does not need to be aware of the degree of tightness. Furthermore, with conventional bolt tightening, an event that the tightening force changes due to vibration and impact of the track tends to occur. However, in this device, the leaf spring 4 absorbs vibration and impact, so the degree of tightness due to tightening is constant. Can be kept in.

1 ... Boltless type buckling prevention device.
2 ... Left resistance plate.
3 ... Right resistance plate.
4 ... Leaf spring.
5 ... Lower plate.
6 ... Taper block.
R ... Rail.
S ... Sleeper.

Claims (1)

A left resistor plate and a right resistor plate arranged in a pair on the left and right sides of the sleeper in the longitudinal direction;
A leaf spring that links the resistance plates at the top of the left resistance plate and the right resistance plate;
A lower plate that links the resistance plates at the lower portion of the left resistance plate and the right resistance plate;
A taper block inserted between the sleeper and the leaf spring;
An intermediate portion of the lower plate is provided with a receiving surface, and it is possible to determine a surface on which the sleeper is placed according to the standard of the sleeper,
The boltless type buckling prevention device characterized in that the taper block is locked to the sleeper with the elastic force of the leaf spring by engaging the taper block with the leaf spring.

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