CN-121976432-A - Wing rail mosaic block top profile

CN121976432ACN 121976432 ACN121976432 ACN 121976432ACN-121976432-A

Abstract

A wing rail mosaic top profile comprises a profile A, a profile B and a combined profile, wherein the profile A comprises a first top inclined plane matched with a wing rail top surface profile and a working edge curved surface matched with a wing rail head profile, the profile B comprises a second top inclined plane matched with a center rail top surface profile and an arc working edge capable of reducing stress concentration, the combined profile comprises a second top inclined plane, a third top inclined plane smoothly connected with the second top inclined plane and matched with a wheel tread and an arc working edge capable of reducing stress concentration, the profile A is arranged between a mosaic head end and a frog throat to enable a wheel to be smoothly converted between a wing rail and the wing rail mosaic, the profile B is arranged between a center rail width section of 10mm and a mosaic head end to enable the wheel to be smoothly converted between the center rail and the wing rail mosaic, and the combined profile is arranged between the frog throat and the center rail width section of 10mm to enable the wheel to be smoothly converted between the profile A and the profile B.

Inventors

SUN LIBIN
MA SI
SHI QINGFENG
ZHANG CHUNYU
SONG ZHAO
LI LONGCHAO

Assignees

中铁宝桥集团有限公司
中铁高新工业股份有限公司

Dates

Publication Date: 20260505
Application Date: 20260116

Claims (5)

1. The top profile of the wing rail mosaic block is characterized by comprising a profile A, a profile B and a combined profile, wherein the profile A comprises a first top inclined plane matched with the profile of the wing rail top surface and a working edge curved surface matched with the profile of the wing rail head, the profile B comprises a second top inclined plane matched with the profile of the center rail top surface and a circular arc working edge capable of reducing stress concentration, and the combined profile comprises a second top inclined plane, a third top inclined plane smoothly connected with the second top inclined plane and matched with the tread of the wheel and a circular arc working edge capable of reducing stress concentration; The combined profile is arranged between the frog throat and the 10mm section of the head rail, so that the wheel is smoothly switched between the profile A and the profile B, and the tread of the wheel 9 is simultaneously contacted with the top surfaces of the head rail 10 and the wing rail mosaic 11.
2. The wing rail mosaic top profile of claim 1, wherein the slope of the first top slope is 1:40, the slope of the second top slope is 1:8, and the slope of the third top slope is 1:20.
3. A wing rail mosaic top profile according to claim 1 or 2, wherein said profile A is smoothly joined to said combined profile B by a transition D and said combined profile A is smoothly joined to said combined profile B by a transition E.
4. The top profile of a wing rail mosaic according to claim 2, wherein said arcuate working edge is an R8 arcuate surface.
5. The top profile of a wing rail mosaic according to claim 2, wherein the length of the transition sections D and E is 100-300 mm.

Description

Wing rail mosaic block top profile Technical Field The invention belongs to the technical field of railway turnouts, and particularly relates to a top profile of a wing rail mosaic block. Background Along with the development of railways to heavy load and high speed, higher requirements are put on frog. The core rail and the insert of the embedded wing rail type alloy steel combined frog are made of wear-resistant materials such as bainitic steel, the heel rail and the wing rail are made of pearlitic steel rails made of the same materials as the lines, the problem of field welding and connection of the fixed frog when the fixed frog is paved on the seamless lines is solved, and the embedded wing rail type alloy steel combined frog is favored by users. The wing rail mosaic block is an important component in the mosaic wing rail type alloy steel combined frog, bears the wheel load conversion between the center rail and the wing rail, is influenced by the structure, and gradually reduces the contact area between the top surface of the mosaic block and the wheel in the wheel load conversion area range when the wing rail mosaic block is reversely fed into the fork, and gradually increases the contact area between the top surface of the mosaic block and the wheel in the wheel load conversion area range when the wing rail mosaic block is forward fed into the fork. Because the width and the height of the section of the wing rail mosaic block and the section of the core rail in the frog area are continuously changed, the contact point is possibly arranged on the wing rail mosaic block and also possibly arranged on the core rail, and the position of the contact point is changed along with the different section positions, thereby generating irregularity of wheel rail contact, increasing the impact of wheels and aggravating the abrasion of the top surface of the frog. Disclosure of Invention The invention provides a wing rail mosaic top profile to overcome the defects of the prior art. The technical scheme adopted by the invention is that the top profile of the wing rail mosaic block comprises a profile A, a profile B and a combined profile, wherein the profile A comprises a first top inclined plane matched with the profile of the wing rail top surface and a working edge curved surface matched with the profile of the wing rail head, the profile B comprises a second top inclined plane matched with the profile of the heart rail top surface and a circular arc working edge capable of reducing stress concentration, and the combined profile comprises a second top inclined plane, a third top inclined plane smoothly connected with the second top inclined plane and matched with the tread of the wheel and a circular arc working edge capable of reducing stress concentration; The combined profile is arranged between the frog throat and the 10mm section of the head rail, so that the wheel is smoothly switched between the profile A and the profile B, and the tread of the wheel 9 is simultaneously contacted with the top surfaces of the head rail 10 and the wing rail mosaic 11. The slope of the first top slope is 1:40, the slope of the second top slope is 1:8, and the slope of the third top slope is 1:20. The profile A is smoothly connected with the combined profile through a transition section D, and the combined profile is smoothly connected with the profile B through a transition section E. The arc working edge is an R8 arc surface. The lengths of the transition sections D and E are 100-300 mm. Compared with the prior art, the invention has the following beneficial effects: 1. the invention not only can realize smooth wheel load conversion between the wing rail and the mosaic blocks, reduce wheel impact and improve the stressed state of the front area of the frog throat, but also can realize smooth wheel load conversion between the mosaic blocks and the frog core rail, eliminate unsmooth contact of the wheel rail and improve the stressed state of the weak area of the frog core rail by optimizing the top profile of the mosaic blocks of the wing rail. 2. The invention solves the problem that the contact point of the tread of the wheel is changed along with the different section positions due to the continuous change of the section widths and the height of the wing rail mosaic blocks and the core rail in the frog area, and eliminates the irregularity of the contact of the wheel and the rail. Drawings FIG. 1 is a front view of the present invention; FIG. 2 is a top view of the present invention; FIG. 3 is a cross-sectional view of the structure at A-A in FIG. 1; FIG. 4 is a cross-sectional view of the structure at B-B in FIG. 1; FIG. 5 is a cross-sectional view of the structure at C-C of FIG. 1; FIG. 6 is a schematic view of the profile A configuration of the present invention; FIG. 7 is a schematic view of the combined profile configuration of the present invention; FIG. 8 is a schematic view of the profile B configuration of the pres