JPH0667501U - Tube with rail insulation joint brim - Google Patents

Abstract

(57) [Summary] [Structure] A brim made of glass fiber cloth, vinylon cloth, and thermosetting resin, and a tube made of aramid fiber cloth, glass fiber cloth, and thermosetting resin, which are integrally formed of resin. A tube with a brim for insulating seams of fixed rails. [Effect] If the insulation of the rail joints becomes defective, it may lead to a serious accident. The tube with a brim for seams according to the present invention is highly resistant to pressure, and withstands expansion and contraction of the rail and sinking of the rail when the vehicle passes, and maintains insulation for a long time.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a tube with a brim that is attached to a fastening bolt used for a rail insulating joint portion of a railway to insulate the rail.

[0002]

[Prior art]

 Railroad rails carry signals, commands, and other currents and waves necessary for safe vehicle operation. Therefore, the rail is insulated at regular intervals. Insulation is also applied to rails, bolts for fastening rails to joint plates, and joint plates.

Since the rails are stretched and contracted depending on the season and the vertical load is generated every time a vehicle passes, the rails are required to be insulated with high safety. The tube with a collar shown in Fig. 2 is used to insulate the fastening bolts between the joint plates. The tube 1 with a brim is composed of a brim 3 and a tube 2, and is used by being inserted into a fastening bolt between joint plates via rails. The fastening bolt is insulated with the rail and the joint plate by the tube with the brim.

A tube with a brim currently used is a plate formed by laminating and molding a glass fiber cloth and a thermosetting resin into a disc, which is then formed by injection molding a thermosetting resin such as a polycarbonate resin. It is fitted to the molded tube 2, and its manufacturing method is as follows. The inner circle of a pre-processed disc is cut into a diameter slightly smaller than the outer diameter of the tube 2 to form a brim 3 which is then placed in a mold. The mold is closed, the tube 2 is injection-molded, and the tube 2 is fixed to the inner circular hole of the disk by an insert.

[0005]

[Issues to be solved by the device]

 However, the collar 3 and the polycarbonate tube 2 are fixed to each other only when the thickness of the tube 2 is about 2 mm, and the flange 3 is engaged with the groove of about 0.5 mm provided in the tube 2 by insert molding. Nothing more than. In addition, since it is formed in the inner circle of the brim, the tube sometimes loosens due to the shrinkage of the tube after molding depending on the molding conditions. In addition, a weld remains on a part of the side surface of the tube, which may partially reduce the strength.

The pressure received by the brim 3 when the tube 1 with the brim is used, that is, the fastening force of the bolt for fixing the rail is 10 tons or more. Therefore, when the bolt is normally fastened, a sufficient pressure is applied. Although the fastening bolts may be pushed and bent due to the sinking of the rail due to wheel load and the expansion and contraction of the rail in the length direction during summer and winter, the collar 3 is fixed at a right angle to the joint plate, while the tube 2 Since the bolt bends along the bend, the tube 2 and the brim 3 may come off.

Insulating joints of rails in railways are extremely important for safe operation of vehicles, and loss of the function of rail insulation may lead to a serious accident. Moreover, it is difficult to inspect from the outside between the joints of the insulating parts, and the emergence of a robust, highly safe tube with a brim has been awaited.

[0008]

[Means for Solving the Problems]

 This invention has been made to solve the above-mentioned problems. A brim 3 made of glass fiber cloth, vinylon cloth and thermosetting resin and a tube 2 made of aramid fiber cloth, glass fiber cloth and thermosetting resin are provided. , A tube with a brim for rail insulation joint, which is integrally fixed with a thermosetting resin.

The present invention will be described below with reference to the drawings. FIG. 1 is an external view of a tube with a brim, a part of which is shown in a sectional view, 2 is a tube, 3 is a brim, and 4 is a fixed portion. The brim 3 is composed of a glass fiber cloth of length 607d / 42F and a width 607d / 32F and a vinylon fiber cloth of 200d / 18F for both length and width at a ratio of 3: 1, and a liquid as a thermosetting resin. 30 parts of a curing agent composed of an aliphatic amine modifier is used as an adhesive binder with respect to 100 parts of a modified epoxy resin, and each fiber cloth is impregnated and cured under heat and pressure to form a disk. The amount of resin used is preferably in the range of 35 to 40% (weight) with respect to the fiber weight.

Cube 2 was used to form a disc by laminating an aramid fiber cloth using 1000d / 18F on both the vertical and horizontal sides and a glass fiber cloth using vertical 202d / 60F and horizontal 202d / 58F at a ratio of 1: 1. This is a tube in which the same type of epoxy resin was used as an adhesive binder, and each fiber cloth was impregnated and laminated in a tubular shape and heated and cured. It is recommended that the aramid fiber cloth to be used has a rough structure and that the glass fiber cloth has a large number of shots. The amount of resin used is preferably in the range of 30 to 35% based on the weight of fiber.

The brim 3 is fitted to the end portion 4 of the tube 2 and a thermosetting resin is applied to the fitting portion, and is fixed by heating while being pressed. The brim 3 and the tube 2 are fixed to each other with a higher adhesive strength by using the same resin as that used for the brim and the tube. As shown in the figure, the end portion 4 of the tube 2 into which the collar 3 is fitted and fixed to the tube 2 is provided with a taper θ, so that the collar 3 and the tube 2 are more firmly fixed, which is convenient. The taper θ is preferably about 1 degree.

FIG. 3 is a cross-sectional view of an insulating joint portion of the rail showing a usage state of the tube 1 with a collar. The rail 5 is sandwiched by joint plates 6-1 and 6-2 via insulating materials 13-1 and 13-2, and fastening bolts 7 are inserted through bolt holes 8, 9-1 and 9-2. The fastening bolt 7 is inserted through the washer 10 so that the collar 3 of the tube 1 with the collar is located on the surface of the head of the bolt, and the other end of the bolt 7 has the collar 3 on the surface of the washer 11. A tube 1 with a brim is inserted so as to abut, and a fastening bolt 7 is tightened with a nut 12 via a washer 11 to form an insulating joint portion of the rail.

In the insulating joint portion, the pressure received by the collar 3 of the tube 1 with the collar, that is, the fastening force of the fastening bolt 7 reaches 10 tons or more, but when the fastening bolt 7 is normally fastened, Although the attached tube withstands the pressure sufficiently, the fastening bolt 7 may be bent due to the sinking of the rail 5 due to the wheel load and the expansion and contraction of the rail 5 in the length direction in the summer and winter. In this case, normally, the brim 3 is fixed to the joint plates 6-1 and 6-2 at right angles to the fastening bolt 7, but the tube 2 bends along the bending of the fastening bolt 7, and the conventional one has the brim 3. There were times when the CHUUB 2 would leave. Further, the washers 10 and 11 are fitted into the fastening holes of the fastening bolts 7, and the same goes for the tube 1 with the brim.

Therefore, the fastening bolt 7 is rarely fastened in a normal shape as shown in FIG. 3, and normally it is impossible for the centers of the washers 10 and 11 to coincide with the central axis of the fastening bolt. It is often fixed in such a state that the load on the collar 3 of the tube 1 with the collar receives a concentrated load partially or irregularly, and the conventional one sometimes loses.

Further, the pressure applied to the tube 2 not only causes a complicated repeated load due to vibration by pressurizing the side surface of the tube 1 with the brim due to the expansion and contraction of the rail 5 and the sinking of the rail when the vehicle passes, Iron rust powder is added to the pressure surface, and the degree of wear increases in proportion to the train operation frequency.

The tube 1 with a brim of the present invention is a fastening bolt made of a tube that combines aramid fiber cloth and glass fiber cloth, a flange that combines glass fiber cloth and vinylon cloth, and a thermosetting resin that is impregnated and cured. It can withstand a tightening force of 10 tons or more, and sometimes hits the head of the fastening bolt 7 with a hammer for rail maintenance work, but it also withstands this and has appropriate elasticity. Therefore, these problems can be sufficiently dealt with.

Further, the joint portion of the rail is a portion that receives a complicated partial pressure due to expansion and contraction of the rail 5, deflection of the rail due to wheel load, etc. as a repeated load, but the tube with collar 1 has Since it has pressure resistance and appropriate elasticity and abrasion resistance, it withstands repeated loads sufficiently and maintains reliable insulation for a long period of time, contributing to safe train operation.

Next, the test results of the pressure resistance test of the tube with a collar according to the present invention and the conventional tube will be shown.

[0019]

[Table 1]

[0020]

[Table 2]

In Tables 1 and 2, the term “conventional product” refers to that shown in FIG. Further, in Table 1, PC indicates a polycarbonate resin. In Table 2, the fixed portion refers to the fixed portion of the brim 3 and the tube 2.

[0022]

[Effect of device]

 The tube with a brim for rail insulation seams of the present invention has appropriate elasticity and abrasion resistance, and is also highly resistant to pressure, so it maintains reliable insulation for a long period of time and contributes to the safety of railway vehicle operation.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view of a tube with a brim for rail insulation joint of the present invention.

FIG. 2 is a partial cross-sectional view of a conventional tube with a brim for rail insulation joint.

FIG. 3 is a cross-sectional view showing a usage state of a tube with a brim for rail insulation joint.

[Explanation of symbols]

 1 Tube with flange 2 Tube 3 Tube 5 Rail 5 Seam plate 7 Fastening bolt 12 Nut 13 Insulation material

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Masazumi Ohashi, 252 4 Kajigaya-cho, Sakae-ku, Yokohama-shi, Kanagawa Prefecture (72) Creator Yasuo Kunida 3-24-8 Nishiwaseda, Shinjuku-ku, Tokyo Inside Kokuta Giken Co., Ltd.

Claims (3)

[Scope of utility model registration request] 1. A brim 3 made of glass fiber cloth, vinylon cloth and thermosetting resin, and a tube 2 made of aramid fiber cloth, glass fiber cloth and thermosetting resin are integrally fixed by the thermosetting resin. A tube with a brim for rail insulation joints. 2. The flanged tube according to claim 1, wherein the flange 3 and the tube 2 are fixed with the same resin as that constituting the tube 2. 3. A tube with a brim for rail insulation joint according to claim 1, wherein the tube 2 is provided with a taper at an end portion and the brim 3 is fixed to this portion.