CN210561484U

CN210561484U - I-shaped transition rail

Info

Publication number: CN210561484U
Application number: CN201920952600.6U
Authority: CN
Inventors: 夏仕敏; 江峰; 俞玉龙; 董程亮; 汪瑞
Original assignee: Wuhu China Railway Cogifer Track Co Ltd
Current assignee: Wuhu China Railway Cogifer Track Co Ltd
Priority date: 2019-06-24
Filing date: 2019-06-24
Publication date: 2020-05-19
Anticipated expiration: 2029-06-24

Abstract

The utility model discloses a I shape transition rail, I shape transition rail one end highly is higher than the other end, I shape transition rail includes straight section and slope changeover portion, straight section is located the high higher one end of I shape transition rail, the slope changeover portion with the top smooth transition of straight section, the slope changeover portion is followed with certain slope straight section tip extends to the high lower one end of I shape transition rail, the higher one end of I shape transition rail and the end connection who newly changes the rail, the other end and the end connection of rail that has worn and torn, the top contour line of each department cross-section of I shape transition rail all is unanimous with the cross-section top contour line of continuous rail. The utility model discloses shortened the skylight period that the rail changed the production greatly when can changing the rail, improved the machining precision to the transition part between new replacement rail and the rail that has worn and torn moreover to can effectively guarantee the stability of transition rail slope and train operation, and improve the life of rail.

Description

I-shaped transition rail

Technical Field

The utility model belongs to the track field, concretely relates to I shape transition rail.

Background

In the field of rails, i-shaped rails are widely applied, but after long-term use, the top of the rail head of the i-shaped rail is subjected to friction impact with wheels for a long time, so that the abrasion of the rail head in the vertical direction is continuously increased. Regular maintenance is therefore required to replace the heavily worn rails. After the steel rails with larger abrasion are partially replaced in the line maintenance, the abrasion of the same line is uniform theoretically, the whole line cannot be replaced on the same day, so the line can be replaced only a little bit, but in order to ensure that the vehicle can be driven in the line maintenance process, the similar steel rails are needed to exist, and a section of transition rail is inserted between the new steel rail and the old steel rail.

There is a difference in height between the newly replaced rail and the worn-out rail. In the prior art, the height difference of the joint position is usually polished smoothly by adopting a polishing mode, but the mode has the following defects:

1. the height difference is more time-consuming to process in the polishing mode and needs to work at the place where the steel rail is laid, so that a skylight period for stopping driving is required to be reserved for the line, when the skylight period is short, the product quality can be influenced by human factors, and safety risks also exist.

2. When the height difference is not less than 3mm, the existing polishing mode cannot ensure the smoothness of the transition part, because the polishing length is too long, the uniformity of the polishing gradient cannot be ensured, and the polishing mode is not suitable for processing the problem.

3. The shape of the rail head profile of manual grinding cannot be guaranteed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an I shape transition rail to the process of polishing that adopts the mode of polishing processing to newly change rail joint portion and lead to among the solution prior art needs longer skylight period, easily receives artificial factor to influence processingquality, and is not applicable to the problem that the difference in height is not less than the 3mm condition.

The I-shaped transition rail is characterized in that one end of the I-shaped transition rail is higher than the other end of the I-shaped transition rail, the I-shaped transition rail comprises a straight section and an inclined transition section, the straight section is located at the higher end of the I-shaped transition rail, the inclined transition section is in smooth transition with the top of the straight section, the inclined transition section extends from the end of the straight section to the lower end of the I-shaped transition rail with a certain slope, the higher end of the I-shaped transition rail is connected with the end of a newly replaced steel rail, the other end of the I-shaped transition rail is connected with the end of an abraded steel rail, and top contour lines of sections of all parts of the I-shaped transition rail are consistent with top contour lines of sections of connected steel rails.

Preferably, two ends of the I-shaped transition rail are fixedly connected with adjacent I-shaped rails through fishplates, the size and the shape of the end face of the I-shaped transition rail are consistent with those of the connected steel rails, and at least two bolt holes for fixing the fishplates are arranged on the rail waists at the two ends of the I-shaped transition rail.

Preferably, the slope of the sloped transition is no greater than 1: 1000.

The utility model has the advantages that:

1. the utility model discloses a head height of newly changing the rail and the head height of rail of wearing and tearing rail through the difference in height of the two, with the length of 1000 slope design slope transition sections, the shape of design transition rail is in order to cooperate the rail terminal surface shape at two ends. Therefore, the I-shaped transition rail is added when the steel rail is replaced, the steel rail construction site is not needed to be polished, and the skylight period caused by replacement of the steel rail is greatly shortened.

2. The I-shaped transition rail in the scheme is processed in advance according to design requirements, mature equipment for milling the steel rail can be adopted, and the transition rail is conveniently and quickly produced by adopting a milling mode. Therefore, the requirements on the sizes and the shapes of the two ends of the I-shaped transition rail can be met, and the influence of human factors on the quality caused by manual operation and polishing on site is avoided. Compared with the mode of realizing the connection of the rail heads by manual polishing, the mode greatly shortens the operation time, improves the product quality, and the method also ensures that the transition rail can stably keep the slope of the inclined transition section, thereby being suitable for the condition of great height difference of two ends.

3. Through measuring the height of wearing and tearing rail, then according to the inclination of transition rail, calculate fast and saw cut the position, can guarantee the highly uniform of the height of transition rail and wearing and tearing rail to can guarantee to connect two kinds of rail uniform transition in the position, improve the travelling comfort of wheel through connecting the position, prolong the life-span of rail, guarantee vehicle safety. To ensure smooth transition, the slope is not more than 1: 1000.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a front view of the I-shaped transition rail of the present invention;

FIG. 3 is a left side view of the structure shown in FIG. 2;

fig. 4 is a schematic structural view of the connection part of the i-shaped transition rail and the worn steel rail of the present invention.

The reference numbers in the figures are: 1. i-shaped transition rail, 11, straight section, 12, inclined transition section, 13, rail head, 14, rail web, 2, new replaced rail, 3, worn rail, 4 and fishplate.

Detailed Description

The following detailed description of the embodiments of the present invention will be provided to help those skilled in the art to more fully, accurately and deeply understand the concept and technical solutions of the present invention, through the description of the embodiments with reference to the accompanying drawings.

Example 1:

as shown in fig. 1-4, the utility model provides an I-shaped transition rail, 1 one end of I-shaped transition rail is highly higher than the other end, I-shaped transition rail 1 includes straight section 11 and slope changeover portion 12, straight section 11 is located the 1 high one end of I-shaped transition rail, slope changeover portion 12 with the top smooth transition of straight section 11, slope changeover portion 12 is followed with the slope of 1:1000 the 11 tip of straight section extends to the 1 low one end of I-shaped transition rail height, the 1 high one end of I-shaped transition rail and the end connection of newly changing rail 2, the other end and the end connection of rail 3 that has worn out, the top contour line of I-shaped transition rail 1 each department cross-section all is unanimous with the cross-section top contour line of the rail that links to each other. In this embodiment, the length of the inclined transition section 12 reaches 12000mm, and the transition between joints with a height difference of 12mm can be realized, meanwhile, the length of the straight section 11 can be set to 1000mm, and the newly replaced steel rail 2 and the higher end of the i-shaped transition rail 1 are in straight line transition, so that vibration is hardly generated, and the abrasion caused is very small.

The two ends of the I-shaped transition rail 1 are fixedly connected with the adjacent I-shaped rails through the fishplates 4, the size and the shape of the end face of the I-shaped transition rail 1 are consistent with those of the connected steel rails, and the rail waist 14 at the two ends of the I-shaped transition rail 1 is provided with at least two bolt holes for fixing the fishplates 4.

One side of the fishplate 4 is provided with a groove extending along the length direction towards the other side of the rail web 14, and bolts penetrate through bolt holes formed in the fishplate 4 and the rail web 14 to realize the connection of the pair of fishplates 4 to the two steel rails. The bolt is vacant in the groove, the tail end of the bolt is fixed by a nut, and a spring washer is arranged between the nut and the bottom of the groove on the through side, so that the reliable connection between the I-shaped transition rail 1 and other rails can be better realized.

The utility model discloses a processing and work progress do, at first survey the height of newly changing the rail, then according to the installation replacement position of the I shape transition rail 1 of setting for, find highly less rail 3 that has worn and torn that links to each other with I shape transition rail 1. And then determining the length of the transition rail according to the height difference between the two steel rails and the height of the steel rail of the connecting part on the line, wherein the maximum slope of the inclined transition section 12 is 1:1000, and the theoretical height difference 0 of the joint position is ensured. And cutting the I-shaped transition rail 1 which conforms to the shape and the size of two ends and is consistent with the shape and the size of the connected rail by a special rail machine tool in a machining mode. The processing method adopts a milling mode to conveniently and quickly realize the production of the transition rail. Therefore, the requirements on the sizes and the shapes of the two ends of the I-shaped transition rail 1 can be met, and the influence of human factors on the quality caused by manual operation and polishing on site is avoided. Meanwhile, the method has higher processing accuracy, and the transition rail can stably keep the slope of the inclined transition section, thereby being suitable for the condition that the height difference of two ends is large.

After processing, the I-shaped transition rail 1 is transferred to a track replacing site, joint bolt holes are drilled at the two ends of the I-shaped transition rail 1 and the connecting ends of other tracks, the I-shaped transition rail 1 is laid to connect a new replacing steel rail 2 and an abraded steel rail, and the I-shaped transition rail 1 is connected to the end parts of the other tracks at the track processing site through the fishplate 4. The utility model discloses the I shape transition rail both ends that correspond all connect through fishplate 4, can keep certain joint strength, again can convenient to detach, and convenient follow-up rail is section by section changed.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The above description is made for the exemplary purposes with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above embodiments, and various insubstantial improvements can be made without modification to the present invention.

Claims

1. The utility model provides a I shape transition rail which characterized in that: the H-shaped transition rail is characterized in that one end of the H-shaped transition rail (1) is higher than the other end, the H-shaped transition rail (1) comprises a straight section (11) and an inclined transition section (12), the straight section (11) is located at the higher end of the H-shaped transition rail (1), the inclined transition section (12) is in smooth transition with the top of the straight section (11), the inclined transition section (12) extends from the end of the straight section (11) to the lower end of the H-shaped transition rail (1) with a certain slope, the higher end of the H-shaped transition rail (1) is connected with the end of a newly replaced steel rail (2), the other end of the H-shaped transition rail is connected with the end of a worn steel rail (3), and top contour lines of all cross sections of the H-shaped transition rail (1) are consistent with the top contour lines of the cross sections of the connected steel rails.

2. An i-shaped transition rail according to claim 1, wherein: the double-end-face steel rail is characterized in that two ends of the I-shaped transition rail (1) are fixedly connected with adjacent I-shaped rails through fishplates (4), the size and shape of the end face of the I-shaped transition rail (1) are consistent with those of the connected steel rails, and at least two bolt holes for fixing the fishplates (4) are formed in rail waists (14) at two ends of the I-shaped transition rail (1).

3. An i-shaped transition rail according to claim 2, wherein: the slope of the sloped transition (12) is no greater than 1: 1000.