CN203429510U

CN203429510U - Track fastener elastic strip

Info

Publication number: CN203429510U
Application number: CN201320476256.0U
Authority: CN
Inventors: 伍曾; 陶忠; 李洁青
Original assignee: Kunming University of Science and Technology
Current assignee: Kunming University of Science and Technology
Priority date: 2013-08-06
Filing date: 2013-08-06
Publication date: 2014-02-12
Anticipated expiration: 2023-08-06

Abstract

The utility model relates to a track fastener elastic strip and belongs to the technical field of engineering original parts and parts. On the elastic strip, a surface contacted with a loosening nut, a surface contacted with a track gauge block and a surface contacted with a track gauge baffle are all provided with convex teeth without weakening the section area of the elastic strip. The convex teeth are cylinders with the section diameter of 2.4-2.6mm and the height of 0.8-1.2mm; the differences between the circle circles of the convex teeth are 2.5-3.5mm. The area defined by a connecting line between the convex teeth and the circle center at the outermost layer is not smaller than the area of the contacting surface. The convex teeth and the elastic strip are integrally molded and are made of the same material. The service life of the fastener elastic strip is prolonged by about 15-20% due to the structural improvement, and the track transportation cost and the curing cost are reduced.

Description

A kind of rail clip spring

Technical field

The utility model relates to a kind of rail clip spring, belongs to engineering original paper and component technology field.

Background technology

Fastener technology is one of key technology of ballastless track structure, its operating principle is to utilize self elastic deformation generation buckle press (as shown in Figure 1), structure under rail and rail is coupled to an integral body long-term effectively, and spring is the critical element of realizing fastener function.Under train and temperature load, there is fretting wear and fatigue in spring, thereby reduce the buckle press of fastener system, reduce service behaviour and the application life of fastener, the orbital maintenance maintenance causing due to the loss of fastener system buckle press accounts for the more than 70% of the total maintenance of track, has greatly increased the cost of orbital maintenance maintenance.

Summary of the invention

The utility model provides a kind of rail clip spring, reduces fretting wear and the tired impact on spring, thereby reduces the loss of elastic-strip pressure, extends the application life of fastener.

The technical solution of the utility model be on spring 1 with loosen the surface that nut contacts, the surface contacting with track gauge block is provided with the surface contacting with gauge apron the double wedge 2 that does not weaken spring section area.

Described double wedge 2 is cylinder, and diameter of section is 2.4～2.6mm, is highly 0.8～1.2mm, and between the double wedge center of circle, distance is 2.5～3.5mm.

The area that between the outermost layer cylinder center of circle of described double wedge 2, line surrounds is not less than the area of contact surface.

Between described double wedge and spring, be formed in one, and be same material.

Spring of the present utility model can be used for, on the fastener of Ballast track, non-fragment orbit, also can be used on the fastener of urban track traffic.

The beneficial effects of the utility model are: can make fastening elastic rod extend 15～20% left and right application life, reduce rail transport and maintenance cost.

Accompanying drawing explanation

Fig. 1 is the utility model track structure schematic diagram;

Fig. 2 is the structural representation of the utility model rail clip spring and track gauge block and gauge apron contact surface;

Fig. 3 is the utility model rail clip spring and the surface texture schematic diagram that loosens nut and contact;

Fig. 4 is the utility model rail clip fatigue test schematic diagram.

In figure, each label is: 1-spring, 2-double wedge.

The specific embodiment

Below in conjunction with the drawings and specific embodiments, the invention will be further described.

Embodiment one: as shown in Figures 2 and 3, present embodiment be on spring 1 with loosen the surface that nut contacts, the surface contacting with track gauge block is provided with the surface contacting with gauge apron the double wedge 2 that does not weaken spring section area.Double wedge 2 is cylinder, and diameter of section is 2.5mm, is highly 1mm, and between the double wedge center of circle, distance is 3mm.The area that between the outermost layer cylinder center of circle of double wedge 2, line surrounds is not less than the area of contact surface.Between double wedge and spring, be formed in one, and be same material.

Embodiment two: as shown in Figures 2 and 3, present embodiment be on spring 1 with loosen the surface that nut contacts, the surface contacting with track gauge block is provided with the surface contacting with gauge apron the double wedge 2 that does not weaken spring section area.Double wedge 2 is cylinder, and diameter of section is 2.4mm, is highly 0.8mm, and between the double wedge center of circle, distance is 3.5mm.The area that between the outermost layer cylinder center of circle of double wedge 2, line surrounds is not less than the area of contact surface.Between double wedge and spring, be formed in one, and be same material.

Embodiment three: as shown in Figures 2 and 3, present embodiment be on spring 1 with loosen the surface that nut contacts, the surface contacting with track gauge block is provided with the surface contacting with gauge apron the double wedge 2 that does not weaken spring section area.Double wedge 2 is cylinder, and diameter of section is 2.6mm, is highly 1.2mm, and between the double wedge center of circle, distance is 2.5mm.The area that between the outermost layer cylinder center of circle of double wedge 2, line surrounds is not less than the area of contact surface.Between double wedge and spring, be formed in one, and be same material.

In order to contrast the performance of present patent application spring and original fastening elastic rod, 10 groups of springs getting 10 groups of II type fastening elastic rods and embodiment 1 carry out fatigue test according to Fig. 4, and test result of fatigue life is in Table 1.

Table 1 fastening elastic rod loads number of times/10^4

As can be seen from Table 1, the spring of embodiment 1 increases by 5～10% left and right than the loading number of times of original spring, on average increases by 5.01%, and standard deviation reduced by 9.5%, illustrate that to have carried out the spring performance of patent application processing more stable.

Below by reference to the accompanying drawings the specific embodiment of the present utility model is explained in detail, but the utility model is not limited to above-mentioned embodiment, in the ken possessing those of ordinary skills, can also under the prerequisite that does not depart from aim of the present invention, make various variations.

Claims

1. a rail clip spring, is characterized in that: spring (1) upper with loosen surface that nut contacts, contact with track gauge block be surperficially provided with the surface contacting with gauge apron the double wedge (2) that does not weaken spring section area.

2. rail clip spring according to claim 1, is characterized in that: described double wedge (2) is cylinder, and diameter of section is 2.4～2.6mm, is highly 0.8～1.2mm, and between the double wedge center of circle, distance is 2.5～3.5mm.

3. rail clip spring according to claim 2, is characterized in that: the area that between the outermost layer cylinder center of circle of described double wedge (2), line surrounds is not less than the area of contact surface.

4. rail clip spring according to claim 1, is characterized in that: described double wedge (2) is formed in one with spring (1).