CN211848650U

CN211848650U - Combined frog with high smoothness of rail top

Info

Publication number: CN211848650U
Application number: CN201921546036.4U
Authority: CN
Inventors: 车伟; 李文博; 王磊; 郑会锋; 付涛
Original assignee: China Railway Baoji Bridge Group Co Ltd; China Railway Hi Tech Industry Corp Ltd
Current assignee: China Railway Baoji Bridge Group Co Ltd; China Railway Hi Tech Industry Corp Ltd
Priority date: 2019-09-17
Filing date: 2019-09-17
Publication date: 2020-11-03
Anticipated expiration: 2029-09-17

Abstract

The utility model relates to a can eliminate because the strong violent impact of wheel to the frog, the high combination frog of railhead ride comfort that the piece, wing rail vertical wear problem occasionally take place is fallen to the heart rail that causes, including the heart rail, the fork with rail, wing rail, spacer iron and high strength bolt, the fork sets up at heart rail heel end with the rail symmetry, and wing rail symmetrical arrangement inserts in the heart rail both sides, inserts between wing rail and heart rail, and the bolt that excels in will insert through wing rail when screwing up and press from both sides tightly and fix between wing rail and heart rail. The advantages are that: the top surface height of the wing rail is increased by inserting the insert between the wing rail and the point rail, the defect of insufficient lifting of the top surface of the wing rail of the common steel rail is overcome, the wheels are ensured to be at the same height and pass through the frog, and the longitudinal gradient and the transverse gradient which are matched with the wheel tread are arranged on the top surface, so that all parts and the wheels can be fully contacted under different abrasion conditions. Therefore, the purposes of improving the smoothness of the frog top, reducing the impact force and prolonging the service life of the frog are achieved.

Description

Combined frog with high smoothness of rail top

Technical Field

Background

Because of the existence of harmful space, the fixed frog has discontinuous track gauge line and unsmooth frog vertical structure, when passing the switch reversely, the impact of the wheel on the point rail is more severe, which easily causes the early crack and block falling of the small section of the point rail, and when passing the switch forwardly, the impact of the wheel on the wing rail is more severe, which easily causes the vertical grinding of the wing rail. Often, the frog can not reach the service life and get off the track in advance due to the falling of the point rail or the vertical grinding of the wing rail, thereby affecting the operation safety of the train and increasing the operation cost of the railway.

When the existing frog is used, the wheels can gradually descend and ascend no matter the wheels roll from the wing rail to the point rail or from the point rail to the wing rail. Although the wing rail top surface is raised during the frog design, the vertical irregularity of the rail top still exists, and along with the abrasion of different degrees such as the wing rail, the point rail, the guard rail and the wheel, the vertical irregularity aggravation of the rail top of the frog is caused, the impact of the wheel on the frog is still severe, and the problems of block falling of the point rail and vertical abrasion of the wing rail occur occasionally.

Disclosure of Invention

The design purpose is as follows: the combined frog with the high rail top smoothness is designed, the defects in the prior art are avoided, the wheel impact stress on the small section of the point rail is small, and the problems that the point rail falls off blocks and the wing rail is vertically worn due to strong and severe impact of the wheel on the frog can be eliminated.

The design scheme is as follows: in order to achieve the above design objectives. The utility model discloses in structural design: 1. for improving the fixed type frog crest ride comfort of frog and protecting the rail little section, the utility model discloses a mode of inserting between existing ordinary rail wing rail and point rail and insert compensates former ordinary rail wing rail and raises back crest and pile the high shortcoming, improves wing rail crest structure, makes the fixed type frog crest of combination formula have high ride comfort. 2. The top surface of the insert is a surface with a longitudinal slope and a transverse slope, the transverse slope is matched with a wheel tread, the longitudinal slope enables a wheel to be always kept at the same level when passing through a frog, the throat of the frog is gradually raised towards the rear end to form a longitudinal slope, the longitudinal slope reaches a high point in front of the theoretical tip of the point rail, and the wheel is enabled to be in contact with the point rail at the small section of the point rail and gradually transited to the point rail to carry independently. 3. In view of different abrasion of working surfaces of parts such as wing rails, guard rails, wheels and the like and the fact that the wheels have a descending trend due to the transverse movement of the vehicles, the theoretical longitudinal top surface of the insert is no more than 2mm higher. 4. In order to ensure that the wheel passes through the wing rail in the forward direction, the heel end of the insert is lower than the top surface of the wing rail and is lifted to the front end for transition, so that the wheel is ensured to enter the insert (the wing rail) from the point rail for smooth transition. 5. The top surface of the front end of the insert is lower than the top surface of the wing rail and is gradually raised towards the rear end, the height of the top surface of the wing rail is the same as that of the top surface of the wing rail before the width of the top of the insert is 40mm, and the smoothness of the wheel in transition between the insert and the wing rail is guaranteed. And the top surface of the rear end of the insert is lower than the top surface of the wing rail, so that the wheel does not impact the insert when entering the fork in the forward direction, and the transition is smooth. 6. In order to match the wing rail lifting and the smooth wheel entering the center rail, the small section of the center rail is provided with a reduced value, so that the position of the wheel contacting the center rail is about 30mm wide of the rail head, and the mutual matching relation between the wheel and the center rail is improved. 7. In order to further improve the service life of the frog, the point rail is made of alloy steel, the insert is made of alloy steel, and forged high manganese steel or other high-strength and high-performance materials can be adopted. 8. In order to further ensure the stability of all parts after the frog is assembled, the bottom surface of the insert is matched with the rail bottom of the wing rail, a boss is arranged on the side surface of the insert close to the wing rail, the top surface of the boss is in small clearance fit with the lower jaw of the rail head of the wing rail, so that the situation that the insert does not jump up and down when a vehicle vibrates is ensured, and the matching of the insert close to the side of the center rail also adopts a mistake-proof measure, so that the insert is stable and reliable.

The technical scheme is as follows: the utility model provides a combination frog that railhead smoothness is high, includes that the point rail, the fork follow rail, wing rail, spacer iron and high strength bolt, the fork follow rail symmetry sets up at the point rail end of following, and wing rail symmetrical arrangement is in the point rail both sides, inserts and inserts between wing rail and point rail, and the bolt that excels in is tightened the time and is pressed from both sides tightly and fix the insert between wing rail and point rail through wing rail.

Compared with the prior art, the utility model, insert through inserting between wing rail and heart rail and increase wing rail top surface height, compensate ordinary rail wing rail top surface and raise inadequately, ensure that the wheel is in same high through the frog mutually to through set up at the top surface with vertical and the horizontal slope of wheel tread matching, make each spare part and wheel can fully contact when the different wearing and tearing condition. Therefore, the purposes of improving the smoothness of the frog top, reducing the impact force and prolonging the service life of the frog are achieved.

	Strong and violent impact strength of wheel pair frog	Core rail falling block	Wing rail vertical mill
				Background	When the wheel passes through the frog harmful space and the transition section of the point wing rail With wheel-vertical lowering-raising processes for increasing wheel-to-frog And (4) impacting.	The frog head has poor smoothness, the small section of the point rail bears larger impact, and the point rail The contact stress of the small section is increased, the block falling is easy to occur and generally occurs in the heart The top surface of the point rail between the section of 20mm to 45mm of the rail.	Influenced by the arc of the rail angle, the top surface of which is lower than the rail top mark High, small contact area of wheel, smooth and low top of rail, wing rail The top surface impact and the stress are increased, so that the wing rail is worn quickly.
The utility model discloses	The wheels keep the same height when passing through the frog, and the wheels do not fall or rise High smoothness and small impact.	Improved smoothness, small impact force, reduced contact stress of small section of the point rail The block is easy to fall off. In addition, the improvement of the structure and the performance of the wing rail protects the point rail The small section is beneficial to prolonging the service life of the point rail.	The inserted inserts make up the deficiency of the arc of the rail angle and enlarge the vehicle Contact area and smoothness of the wheel, and high performance materials Will also reduce the rail wear.

Drawings

FIG. 1 is a schematic view of a combination frog having a high ride comfort on the top of the rail.

FIG. 2 is a schematic illustration of insert cross rail top slope and insert installation.

FIG. 3 is a schematic illustration of the insert longitudinal rail top slope.

Detailed Description

Example 1: reference is made to figures 1-3 of the drawings. The utility model provides a combination frog that railhead smoothness is high, includes that the rail is followed to heart rail 1, fork 2, wing rail 3, spacer bar 5 and high strength bolt 6, and fork is followed rail 2 symmetry and is set up at heart rail 1 with the end, and 3 symmetrical arrangement of wing rail are in heart rail 1 both sides, and insert 4 and insert between wing rail 3 and heart rail 1, and high strength bolt 6 will insert 4 through wing rail 3 when screwing up and press from both sides tightly and fix between wing rail 3 and heart rail 1.

The top surface of the insert 4 is a longitudinal and transverse two-way slope surface formed by a longitudinal slope surface 7 and a transverse slope surface 11, the transverse slope surface 7 is matched with a wheel tread, the longitudinal slope surface 11 is formed by heightening again on the basis of the longitudinal slope surface 10 of the theoretical rail top, the longitudinal slope surface 11 enables a wheel to be slightly higher than the horizontal plane of the wheel when passing through a frog and gradually uplifts from the throat of the frog to the rear end to form the longitudinal slope surface 11, and the wheel is approximately in contact with the center rail in the front and at the rear of the section of 30mm (more than 29.5mm and less than 30.5 mm) of the center rail.

The top surface of the front end of the insert 4 is arranged at the 16mm line of the wing rail and gradually rises towards the rear end, the height of the top surface of the wing rail is the same as that of the top surface of the wing rail 3 before the width of the top surface of the insert 4 is 40mm, then the top surface of the insert 4 is gradually higher than that of the top surface of the wing rail 3, so that a wheel is slightly higher than the level of an axle, and the top surface of the rear end of the insert 4 is arranged below the top surface of the wing rail 3.

The point rail 1 is made of alloy steel material, and the insert 4 can be made of alloy steel, or forged high manganese steel or other high-strength and high-performance materials.

The bottom surface of the insert 4 is matched with the rail bottom of the wing rail 3 to transmit the wheel load to the wing rail 3, a boss 8 is arranged on the mounting side of the insert 4 and the wing rail 3, a small gap is reserved between the top surface of the boss 8 and the lower jaw of the rail head of the wing rail 3, and a dislocation prevention measure 9 is also adopted in the matching of the insert close to the rail side of the core rail to ensure the stable mounting of the insert.

In view of different abrasion of working surfaces of parts such as wing rails, guard rails, wheels and the like and the tendency of descending of the wheels caused by transverse movement of the vehicles, the top surface of the insert 4 is additionally provided with a secondary stacking height which is not more than 2 mm.

The top surface of the front end of the insert is lower than the top surface of the wing rail, and the front end of the insert is gradually lifted to the rear end, and the height of the front end of the insert is the same as the height of the top surface of the wing rail 3 before the width of the top of the insert 4 rail is 40mm, so that the smoothness of the wheel in the transition between the insert 4 and the wing rail 3 is ensured; similarly, the top surface of the rear end of the insert 4 is lower than the top surface of the wing rail 3, so that the wheel does not impact the insert 4 when advancing in the forward direction, and the transition is smooth.

In order to match the wing rail lifting and the smooth wheel entering the center rail, the small section of the center rail is provided with a reduced value, so that the position of the wheel contacting the center rail is about 30mm wide of the rail head, and the mutual matching relation between the wheel and the center rail is improved.

It is to be understood that: although above-mentioned embodiment is right the utility model discloses a design has done more detailed word description, but these word descriptions, are only right the utility model relates to a simple word description of idea, rather than right the utility model relates to a restriction of idea, any do not surpass the utility model relates to a combination, increase or the modification of idea all fall into the utility model discloses a within the protection scope.

Claims

1. The utility model provides a combination frog that railhead smoothness is high, includes that point rail (1), fork follow rail (2), wing rail (3), interval iron (5) and high strength bolt (6), fork follow rail (2) symmetry and set up at point rail (1) with the end, and wing rail (3) symmetrical arrangement is in point rail (1) both sides, characterized by: the insert (4) is inserted between the wing rail (3) and the point rail (1), and the insert (4) is clamped and fixed between the wing rail (3) and the point rail (1) through the wing rail (3) when the high-strength bolt (6) is screwed down.

2. The high ride comfort composite frog assembly of claim 1 wherein: the top surface of the insert (4) is a longitudinal and transverse bidirectional slope surface formed by a transverse slope surface (7) and a longitudinal slope surface (11), the transverse slope surface (7) is matched with a wheel tread, the longitudinal slope surface (11) enables a wheel to keep the same height when passing through a frog and gradually rises from the throat of the frog to the rear end to form the longitudinal slope surface (11), and the wheel starts to contact with a point rail at a section of about 30mm of the point rail.

3. The high ride comfort composite frog assembly of claim 1 wherein: the top surface of the front end of the insert (4) is arranged at the 16mm line of the wing rail and gradually raises towards the rear end, the height of the top surface of the wing rail (3) is the same before the width of the top of the insert (4) is 40mm, then the top surface of the insert (4) is gradually higher than that of the top surface of the wing rail (3) so that the wheels keep the same height, and the top surface of the rear end of the insert (4) is arranged below the top surface of the wing rail (3) and gradually raises towards the front end to intersect with the top surface of the insert (4.

4. The high ride comfort composite frog assembly of claim 1 wherein: the insert (4) can be made of alloy steel or forged high manganese steel.

5. The high ride comfort composite frog assembly of claim 1 wherein: the bottom surface of the insert (4) is matched with the rail bottom of the wing rail (3) to transmit the wheel load to the wing rail (3), the mounting sides of the insert (4) and the wing rail (3) are provided with bosses (8), small gaps are formed between the top surfaces of the bosses (8) and the rail head lower jaw of the wing rail (3), and the matching of the insert close to the rail side adopts anti-dislocation measures (9) so as to ensure the stable mounting of the insert.

6. The high ride comfort composite frog assembly of claim 1 wherein: the top surface of the insert (4) is increased by not more than 2mm and is heightened again.

7. The high ride comfort composite frog assembly of claim 1 wherein: the height of the top surface of the wing rail (3) is the same as that of the top surface of the insert (4) before the rail top width is 40mm, so that the smoothness of the wheel in the transition between the insert (4) and the wing rail (3) is ensured; in the same way, the top surface of the rear end of the insert (4) is lower than the top surface of the wing rail (3), so that the wheel does not impact the insert (4) when entering the fork in the forward direction, and the transition is smooth.

8. The high ride comfort composite frog assembly of claim 1 wherein: the small section of the point rail (1) is provided with a reduced value, so that the position of the wheel contacting the point rail is at the position of 30mm wide of the rail head.