JPH05255905A - Floor plate for turnout - Google Patents

Abstract

PURPOSE:To prevent the unnecessary outflow of oil from the end face of an oil-impregnated sintered alloy layer, efficiently perform the welding work, and omit the lubricating work after fitting. CONSTITUTION:A floor plate 1 for a turnout is constituted of a base plate 3 mounted and fixed with a basic rail 7 and a sliding plate 5 fixed to the base plate 3 and slindingly supporting a tongue rail 6. The base plate 3 is provided with a basic rail mounting recess 9 and a sliding plate mounting recess 11. The sliding plate 5 is made of a multi-layer sliding plate fitted with an oil- impregnated sintered alloy layer 23 on the upper face of a steel plate 21, and the sliding plate 5 is arranged on the sliding plate mounting recess 11 so that both side faces of the sliding plate mounting recess 11 is brought into contact with both end faces in the longitudinal direction of the sliding plate 5. Both side faces in the width direction of the steel plate 21 constituting the sliding plate 5 are fixed to the bottom face of the sliding plate mounting recess 11 by welding, and seal processing 25 is applied at least to the side section in the width direction of the oil-impregnated sintered alloy layer 23 constituting the sliding plate 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor plate for a branching device having a base plate on which a basic rail is mounted and fixed, and a sliding plate which slidably supports a tongue rail fixed to the base plate and separated from and in contact with the basic rail. .

[0002]

2. Description of the Related Art Conventionally, a floor plate for a turnout device has a sliding base plate for mounting and fixing a basic rail and a sliding plate for slidingly supporting a tongue rail fixed to the base plate and separated from and in contact with the basic rail. A rolled steel plate is used as the plate. Such a turnout floor plate prevents the wear of the slide plate and the seizure between the slide plate and the tongue rails by regularly lubricating the sliding surface with lubricating oil. Lubrication work usually needs to be done once every 2 to 7 days in order to prevent point conversion failure due to oil spots and rust occurring after rain, and it requires a great deal of labor, so today, this sliding It is desired that the moving parts be oil-free.

The applicant of the present invention has previously disclosed, as a sliding plate capable of realizing such oiling of the sliding portion, Japanese Patent Laid-Open No. 23290/1993.
No. 5 has filed an application for a multi-layer sliding plate composed of a steel plate and an oil-containing sintered alloy layer deposited on the upper surface of the steel plate. This multi-layer sliding plate is formed by forming a sintered alloy layer to be a sliding surface with a sintered alloy material having good sliding characteristics, and impregnating this sintered alloy layer with oil. The oil in the oil-impregnated sintered alloy layer exudes to the sliding surface due to the heat generated by sliding friction, so that excellent sliding characteristics are exhibited and the oil-impregnated sintered alloy layer is applied to the steel sheet. Therefore, the load resistance is improved.

[0004]

Conventionally, the sliding plate is attached to the base plate by welding, but even if the multi-layer sliding plate is used as the sliding plate of the floor plate for the branching device,
There is a problem that oil oozes out from the end surface of the oil-containing sintered alloy layer during welding, and the oozing oil smokes and ignites due to the welding heat, thereby lowering the welding workability.

Further, because of unnecessary oil outflow during welding, it is necessary to perform oil impregnation on the oil impregnated sintered alloy layer again after the rocking plate is welded and fixed to the base plate.

The present invention has been devised in view of the above circumstances, and an object of the present invention is to prevent unnecessary oil outflow,
It is an object of the present invention to provide a floor plate for a branching device that can perform welding work efficiently and can omit oil impregnation work after welding and fixing.

[0007]

In order to achieve the above object, the present invention provides a slide plate for slidingly supporting a base plate on which a basic rail is mounted and fixed, and a tongue rail fixed to the base plate and separated from and in contact with the basic rail. In the floor plate for a branching device including a moving plate, the base plate includes a basic rail mounting recess and a sliding plate mounting recess, and the sliding plate is coated with an oil-impregnated sintered alloy layer on the upper surface of the steel plate. The sliding plate is arranged in the sliding plate mounting recess such that both side surfaces of the sliding plate mounting recess are in contact with both longitudinal end surfaces of the sliding plate. And both side surfaces in the width direction of the steel plate forming the slide plate and the bottom surface of the slide plate mounting recess are fixed by welding, and at least the width of the oil-containing sintered alloy layer forming the slide plate. The side portions in the direction are characterized by being subjected to a sealing treatment.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of a floor plate for a branching device according to this embodiment, and FIG. 2 is a plan view of the same. Reference numeral 1 denotes a floor plate for a branch device. The floor plate 1 for a branch device comprises a base plate 3 and a rectangular sliding plate 5, and a tongue rail 6 is slidably supported on the sliding plate 5. A base rail mounting recess 9 for mounting the base rail 7 and a slide plate mounting recess 11 for mounting the slide plate 5 are formed on the upper surface of the base plate 3 by opening in the width direction of the base plate 3. In addition, on the upper surface of the base plate 3 near one end, slant grooves 13 for mounting rail fixing fittings that extend while inclining along the width direction of the base plate 3 are formed. A plurality of base plate mounting holes 15 are provided through the portion.

The base rail 7 is mounted in the base rail mounting recess 9 with both ends of the foot forming the bottom of the base rail 7 abutting on both sides of the base rail mounting recess 9. For fixing, the rail fixing metal fitting 14 whose one end engages with the slant groove 13 is slid along the slant groove 13 in the width direction of the base plate 3, and one end of the foot of the basic rail 7 is mounted on the basic rail 7 by the wedge action by the sliding. The rail fixing metal fitting 14 is pressed against one side surface of the mounting recess 9 and, in this state, the rail fixing bracket 14 is bolted,
It is performed by fixing to the base plate 3 with a nut.

The sliding plate 5 is shown in a plan view in FIG.
As shown in a sectional view taken along line BB of FIG. 3A in FIG. 3B, a steel plate 21 having a large number of independent projections 2101 formed on the surface thereof.
And an oil-containing sintered alloy layer 23 deposited on the steel plate 21. In this embodiment, the oil-containing sintered alloy layer 23 is
In terms of weight ratio, it is formed by applying oil impregnation treatment to a sintered alloy layer composed of tin 4 to 10%, nickel 10 to 40%, phosphorus 0.1 to 4%, graphite 3 to 10%, and the balance copper. As shown in an enlarged view in FIG. 4, chamfering is applied to the portions located on the side surfaces 5A, 5A of the sliding plate 5 in the width direction. Oil-containing sintered alloy layer 2
No. 3 has a high-density low-oil compound alloy layer formed on the surface of the protrusion 2101 and a low-density high oil-impregnated alloy layer formed on the surface of the steel plate 21, and graphite is uniformly dispersed and contained as a lubricating substance. Since the pressure resistance is increased, the tongue rail can be satisfactorily slidably supported without causing plastic deformation or the like due to an impact load when the vehicle is passing, and oil-free can be realized.

Further, the four side portions forming the outer edge of the oil-impregnated sintered alloy layer 23 (the thickness of the low-density high-oil-impregnated alloy layer in this embodiment is 2 mm) are shown by phantom lines in FIG. 2 and also shown in FIG. As described above, the sealing portion 25 is formed over the predetermined width W (5 mm in this embodiment). The sealing treatment is performed prior to the oil impregnation treatment, and after the sealing portion 25 is formed, the oil impregnation treatment is performed to obtain the oil impregnated sintered alloy layer 2
3 is formed. In the sealing treatment, for example, a thermoplastic resin such as an acrylic resin or a thermosetting resin such as a phenol resin, an epoxy resin, a diallyl phthalate resin or an unsaturated polyester resin is used. By impregnating and coating the sintered alloy layer with
Sealing is performed. Considering the influence of welding heat, it is preferable to use the thermosetting resin.

The width of the sliding plate 5 is formed narrower than the width of the base plate 3, and the sliding plate 5 slides in the sliding plate mounting recesses 11 of the base plate 3 on both end faces in the longitudinal direction thereof. Plate mounting recess 1
The side surfaces 5A, 5A of the steel plate 21 constituting the sliding plate 5 in contact with both side surfaces of the sliding plate 5 in the width direction are fillet-welded to the bottom surface of the sliding plate mounting recess 11 to form the sliding plate. The surface of the oil-impregnated sintered alloy layer 23 serving as the sliding surface of No. 5 is the surface 3A of the base plate 3,
It is fixed flush with B.

Since the present embodiment is constructed as described above, the sealing portion 25 can prevent the oil from flowing out from the end surface of the oil-containing sintered alloy layer 23, the welding work can be efficiently performed, and unnecessary oil consumption can be prevented. Can be prevented. Further, since the sealing portion 25 is formed only on the four sides forming the outer edge of the oil-containing sintered alloy layer 23,
The sliding plate 5 exhibits good sliding characteristics without obstructing the outflow of oil to the upper surface of the oil-containing sintered alloy layer 23 which becomes the sliding surface. In addition, the sealing portion 25 prevents oil from flowing out from the end surface of the oil-containing sintered alloy layer 23 due to rainfall or the like after the floor plate 1 for a branching device is attached, and for a long time, without performing oiling work, Labor saving such as maintenance and inspection can be achieved.

Although the sealing portion 25 is formed on the four sides of the oil-containing sintered alloy layer 23 in the embodiment, it may be formed only on the side surfaces 5A and 5A where welding is performed. The material of 23 is not limited to the embodiment and may be any material.

[0015]

As is apparent from the above description, according to the floor plate for a branching machine of the present invention, unnecessary oil can be prevented from flowing out from the end surface of the oil-containing sintered alloy layer, and welding work can be efficiently performed. Further, it becomes possible to omit the lubrication work after mounting.

[Brief description of drawings]

FIG. 1 is a front view of a turnout floor plate including a sliding plate according to an embodiment of the present invention.

FIG. 2 is a plan view of a floor plate for a branching device including a sliding plate according to this embodiment.

FIG. 3 (A) is a partial plan view of a sliding plate, FIG. 3 (B).
FIG. 4 is a sectional view taken along line BB of FIG.

FIG. 4 is an enlarged view of an end portion of a sliding plate.

[Explanation of symbols]

 1 Floor plate for branching device 3 Base plate 5 Sliding plate 21 Steel plate 23 Oil-containing sintered alloy layer 25 Sealing part

Claims (1)

[Claims] 1. A base plate for mounting and fixing a basic rail,
In a floor plate for a branching device, which is fixed to this base plate and slidingly supports a tongue rail that is separated from and in contact with the basic rail, the base plate includes a basic rail mounting recess and a sliding plate mounting recess. The sliding plate comprises a multi-layer sliding plate in which an oil-impregnated sintered alloy layer is attached to the upper surface of a steel plate, and the sliding plate slides on both side surfaces of the sliding plate mounting recess. The longitudinal direction of the plate is arranged in the sliding plate mounting recess so as to be in contact with each other, and the widthwise both side surfaces of the steel plate constituting the sliding plate and the bottom surface of the sliding plate mounting recess. A floor plate for a branching device, which is fixed by welding, and at least a side portion in a width direction of the oil-containing sintered alloy layer constituting the sliding plate is subjected to a sealing treatment.