Alloy steel frog structure of tramcar turnout

Abstract

The invention discloses an alloy steel frog structure of a tramcar turnout. The alloy steel frog structure can comprise an alloy steel frog body, a left toe end steel rail, a right toe end steel rail, a left heel end steel rail, a right heel end steel rail and a bolt pair fastener. A rim groove is formed in the alloy steel frog main body; a toe end protruding part is arranged at the front end of the alloy steel frog body, and a heel end protruding part is arranged at the rear end of the alloy steel frog body. The alloy steel frog structure of the tramcar turnout is simple and reasonable in structure and easy to machine, and the manufacturing cost can be saved. Meanwhile, the joint stability of the frog is better, and the safety of the alloy steel frog structure can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of railway equipment, in particular to an alloy steel frog structure for a tramway switch which improves structural safety by freezing the frog toe end. Background Art

[0002] A turnout is a connection and crossing device that enables locomotives and vehicles to enter or cross from one line to another. A frog is a key device for realizing train cross operation on a railway line, and is a device that enables wheels to cross from one rail to another. Frogs can be divided into fixed frogs and movable frogs according to their structural form; they can be divided into combined frogs and integrally cast frogs according to their structure. Since the running speed of tram vehicles is low and the number of turnouts is small, the current tram turnout frogs mainly use fixed frogs, which are divided into alloy steel frog structures and high manganese steel integrally cast structures.

[0003] The main running part of the alloy steel frog structure is made of alloy steel material, which has high hardness and excellent wear resistance. At the same time, it overcomes the shortcomings of high manganese steel such as low initial hardness and casting defects, and is therefore widely used on the line.

[0004] At the same time, alloy steel frogs also have some inherent deficiencies, such as poor material toughness and poor weldability. In existing tram projects, alloy steel frogs have experienced varying degrees of brittle fracture, posing a safety hazard to tram operation.

[0005] Therefore, how to provide a reliable alloy steel frog structure is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the invention

[0006] The present invention provides an alloy steel frog structure for a tramway turnout, which can improve the connection reliability between the alloy steel frog body and the common rail and ensure driving safety.

[0007] The present invention provides the following scheme:

[0008] A tramway turnout alloy steel frog structure, comprising:

[0009] Alloy steel frog body, left toe rail, right toe rail, left heel rail, right heel rail and bolt fasteners;

[0010] The alloy steel frog body is provided with a wheel flange groove; the front end of the alloy steel frog body is provided with a toe end protrusion, and the rear end is provided with a heel end protrusion; the bottom of the toe end protrusion is provided with a first inclined surface; the first inclined surface is used to fit with the rail bottom surface of the left toe end rail and the right toe end rail; the bottom of the heel end protrusion is provided with a second inclined surface, and the second inclined surface is used to fit with the rail bottom surface of the left heel end rail and the right heel end rail; the toe end protrusion and the heel end protrusion are both provided with horizontal bolt holes;

[0011] The rail head and rail bottom of the left toe rail are respectively provided with a first side surface, and the rail head and rail bottom of the right toe rail are respectively provided with a second side surface; the first side surface and the second side surface are respectively in contact with the two side surfaces of the toe protrusion; the rail waists of the left toe rail and the right toe rail are provided with bolt holes of the same number as the toe protrusion, and the bolt holes are located correspondingly;

[0012] The rail head and rail bottom of the left heel-end rail are respectively provided with a third side surface, and the rail head and rail bottom of the right heel-end rail are respectively provided with a fourth side surface; the third side surface and the fourth side surface are respectively in contact with the two side surfaces of the heel-end protrusion; the rail waists of the left heel-end rail and the right heel-end rail are provided with bolt holes of the same number as the heel-end protrusion, and the bolt holes are located correspondingly;

[0013] The bolt pair fastener is used to assemble the left toe-end rail, the right toe-end rail, the left heel-end rail, the right heel-end rail and the alloy steel frog body together.

[0014] Preferably, the alloy steel frog body is processed from a whole piece of alloy steel billet.

[0015] Preferably, the alloy steel frog body is formed by welding an upper steel plate and a lower steel plate.

[0016] Preferably, the upper steel plate is made of NM400 steel plate or NM360 steel plate; the lower steel plate is made of Q235 or Q355 steel plate.

[0017] Preferably, the thickness of the upper steel plate is less than or equal to 80 mm, and the thickness of the lower steel plate is greater than or equal to 100 mm; and the bolt holes drilled on the alloy steel frog body are located on the lower steel plate.

[0018] Preferably, adhesive is applied between the left toe-end rail, the right toe-end rail, the left heel-end rail, the right heel-end rail and the alloy steel frog body.

[0019] Preferably: non-working side washers are provided between the left toe-end rail and the alloy steel frog body, and between the right toe-end rail and the alloy steel frog body; working side washers are provided between the left heel-end rail and the alloy steel frog body, and between the right heel-end rail and the alloy steel frog body.

[0020] Preferably: both sides of the non-working side washer and the working side washer have unequal width structures, and after assembly, the non-working side washer and the working side washer are respectively parallel to the contact surface of the bolt auxiliary fastener.

[0021] Preferably: non-working side clamping plates and leveling washers are provided between the left toe-end steel rail and the alloy steel frog body, and between the right toe-end steel rail and the alloy steel frog body; working side clamping plates and leveling washers are provided between the left heel-end steel rail and the alloy steel frog body, and between the right heel-end steel rail and the alloy steel frog body.

[0022] Preferably, the leveling washer has a rectangular structure and the lengths of the sides on both sides are different. After the leveling washer is assembled, the contact surface of the leveling washer and the bolt pair fastener is parallel.

[0023] According to the specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0024] The present invention can realize an alloy steel frog structure for a tramway switch. In one implementation mode, the structure may include an alloy steel frog body, a left toe-end steel rail, a right toe-end steel rail, a left heel-end steel rail, a right heel-end steel rail and a bolt auxiliary fastener; a wheel flange groove is provided on the alloy steel frog body; a toe-end protrusion is provided at the front end of the alloy steel frog body, and a heel-end protrusion is provided at the rear end; a first inclined surface is provided at the bottom of the toe-end protrusion; the first inclined surface is used to fit with the rail bottom surface of the left toe-end steel rail and the right toe-end steel rail; a second inclined surface is provided at the bottom of the heel-end protrusion, and the second inclined surface is used to fit with the rail bottom surface of the left heel-end steel rail and the right heel-end steel rail; the toe-end protrusion and the heel-end protrusion are both provided with horizontal bolt holes; the rail head and the rail bottom of the left toe-end steel rail are respectively provided with a first side surface, and the right The rail head and rail bottom of the toe rail are respectively provided with a second side surface; the first side surface and the second side surface are respectively fitted with the two side surfaces of the toe protrusion; the rail waists of the left toe rail and the right toe rail are provided with bolt holes of the same number as the toe protrusion, and the positions are corresponding; the rail head and rail bottom of the left heel rail are respectively provided with a third side surface, and the rail head and rail bottom of the right heel rail are provided with a fourth side surface; the third side surface and the fourth side surface are respectively fitted with the two side surfaces of the heel protrusion; the rail waists of the left heel rail and the right heel rail are provided with bolt holes of the same number as the heel protrusion, and the positions are corresponding; the bolt auxiliary fastener is used to assemble the left toe rail, the right toe rail, the left heel rail, the right heel rail and the alloy steel frog body together. The alloy steel frog structure for tramway turnout provided in the present application has a simple and reasonable structure, simple processing, and can save manufacturing costs. At the same time, the joint stability of this frog is better, which can improve the safety of the alloy steel frog structure.

[0025] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A three-dimensional structural diagram of an alloy steel frog provided in an embodiment of the present invention;

[0028] Figure 2 AA cross-sectional view provided for an embodiment of the present invention;

[0029] Figure 3 A BB cross-sectional view provided for an embodiment of the present invention;

[0030] Figure 4 A CC cross-sectional view provided for an embodiment of the present invention;

[0031] Figure 5 A three-dimensional structural diagram of an alloy steel body provided in an embodiment of the present invention;

[0032] Figure 6 A three-dimensional structural diagram of a left toe rail provided in an embodiment of the present invention;

[0033] Figure 7 A three-dimensional structural diagram of the right toe rail provided by an embodiment of the present invention;

[0034] Figure 8 A three-dimensional structural diagram of the left heel-end rail provided in an embodiment of the present invention;

[0035] Fig. 9 A three-dimensional structural diagram of the right heel-end rail provided in an embodiment of the present invention;

[0036] Fig.10 A three-dimensional structural diagram of a non-working side gasket provided in an embodiment of the present invention;

[0037] Fig.11 A three-dimensional structural diagram of a working side gasket provided in an embodiment of the present invention;

[0038] Fig.12 A BB cross-sectional view provided for an embodiment of the present invention;

[0039] Fig.13 A CC cross-sectional view provided for an embodiment of the present invention;

[0040] Fig.14 A three-dimensional structural diagram of an alloy steel frog provided in an embodiment of the present invention;

[0041] Fig.15 A three-dimensional structural diagram of a non-working side splint provided in an embodiment of the present invention;

[0042] Fig.16 A three-dimensional structural diagram of a working side splint provided in an embodiment of the present invention;

[0043] Fig.17 A three-dimensional structural diagram of a leveling washer provided in an embodiment of the present invention;

[0044] Fig.18 A DD cross-sectional view provided for an embodiment of the present invention;

[0045] Fig.19 This is an EE cross-sectional view provided for an embodiment of the present invention. DETAILED DESCRIPTION

[0046] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0047] Example

[0048] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 , Fig.13 , Fig.14 , Fig.15 , Fig.16 , Fig.17 , Fig.18 , Fig.19 , is an alloy steel frog structure for a tramway switch provided by an embodiment of the present invention, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 , Fig.13 , Fig.14 , Fig.15 , Fig.16 , Fig.17 , Fig.18 , Fig.19 As shown, the structure may include:

[0049] Alloy steel frog body 1, left toe end rail 2, right toe end rail 3, left heel end rail 4, right heel end rail 5 and bolt pair fasteners (high-strength bolts 8, washers 9, nuts 10);

[0050] The alloy steel frog body 1 is provided with a wheel flange groove 101; the front end of the alloy steel frog body 1 is provided with a toe end protrusion 102, and the rear end is provided with a heel end protrusion 103; the bottom of the toe end protrusion 102 is provided with a first inclined surface 1021; the first inclined surface 1021 is used to fit with the rail bottom surface of the left toe end rail 2 and the right toe end rail 3; the bottom of the heel end protrusion 103 is provided with a second inclined surface 1031, and the second inclined surface 1031 is used to fit with the rail bottom surface of the left heel end rail 4 and the right heel end rail 5; the toe end protrusion 102 and the heel end protrusion 103 are both provided with horizontal bolt holes 1032;

[0051] The rail head and rail bottom of the left toe rail 2 are respectively provided with a first side surface 201, and the rail head and rail bottom of the right toe rail 3 are respectively provided with a second side surface 301; the first side surface 201 and the second side surface 301 are respectively in contact with the two side surfaces of the toe protrusion 102; the rail waists of the left toe rail 2 and the right toe rail 3 are provided with bolt holes of the same number as the toe protrusion 102, and the positions thereof are corresponding;

[0052] The rail head and rail bottom of the left heel-end rail 4 are respectively provided with a third side surface 401, and the rail head and rail bottom of the right heel-end rail 5 are respectively provided with a fourth side surface 501; the third side surface 401 and the fourth side surface 501 are respectively fitted with two side surfaces of the heel-end protrusion 103; the rail waists of the left heel-end rail 4 and the right heel-end rail 5 are provided with bolt holes of the same number as the heel-end protrusion 103, and the positions are corresponding.

[0053] The bolt pair fasteners (high-strength bolts 8, washers 9, nuts 10) are used to assemble the left toe rail 2, the right toe rail 3, the left heel rail 4, the right heel rail 5 and the alloy steel frog body 1 together.

[0054] The tram turnout alloy steel frog structure provided in the embodiment of the present application comprises an alloy steel frog body connected and fixed to the left toe rail, the right toe rail, the left heel rail and the right heel rail by bolt pair fasteners to form an integrated structure, and no welding operation is required during the installation process, so that the obtained turnout alloy steel frog connection is reliable and driving safety is guaranteed.

[0055] When actually manufacturing the alloy steel frog body, a variety of methods may be used. For example, in one implementation, the embodiment of the present application may provide that the alloy steel frog body 1 is processed from a whole piece of alloy steel billet.

[0056] In another implementation, the embodiment of the present application may provide that the alloy steel frog body 1 is formed by welding an upper steel plate 104 and a lower steel plate 105 .

[0057] Furthermore, the upper steel plate 104 is made of NM400 steel plate or NM360 steel plate; the lower steel plate 105 is made of Q235 or Q355 steel plate. The thickness of the upper steel plate 104 is less than or equal to 80 mm, and the thickness of the lower steel plate 105 is greater than or equal to 100 mm; the bolt holes drilled on the alloy steel frog body 1 are located on the lower steel plate 105.

[0058] In order to further improve the connection strength of the connection, the embodiment of the present application can provide that adhesive is applied between the left toe rail 2, the right toe rail 3, the left heel rail 4, the right heel rail 5 and the alloy steel frog body 1.

[0059] In order to further improve the stability of the connection, the embodiment of the present application can also provide that non-working side washers 6 are provided between the left toe-end rail 2 and the alloy steel frog body 1, and between the right toe-end rail 3 and the alloy steel frog body 1; working side washers 7 are provided between the left heel-end rail 4 and the alloy steel frog body 1, and between the right heel-end rail 5 and the alloy steel frog body 1.

[0060] The non-working side washer 6 and the working side washer 6 each have unequal width structures on both sides. After assembly, the non-working side washer 6 and the working side washer 7 are each parallel to the contact surface of the bolt auxiliary fastener.

[0061] In an alternative manner, the embodiment of the present application may also provide that a non-working side clamping plate 11 and a leveling washer 13 are provided between the left toe-end rail 2 and the alloy steel frog body 1, and between the right toe-end rail 3 and the alloy steel frog body 1; a working side clamping plate 12 and a leveling washer 13 are provided between the left heel-end rail 4 and the alloy steel frog body 1, and between the right heel-end rail 5 and the alloy steel frog body 1.

[0062] Furthermore, the leveling washer 13 has a rectangular structure and the lengths of the sides on both sides are different. After the leveling washer is assembled, the contact surface of the leveling washer and the bolt pair fastener is parallel.

[0063] In summary, the tramway switch alloy steel frog structure provided by the present application has a simple and reasonable structure, is easy to process, and can save manufacturing costs. At the same time, the joint stability of the frog is better, which can improve the safety of the alloy steel frog structure.

[0064] The following is a detailed introduction to the alloy steel frog structure for a tram turnout provided in an embodiment of the present application.

[0065] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the structure includes an alloy steel frog body 1, a left toe end rail 2, a right toe end rail 3, a left heel end rail 4, a right heel end rail 5, a non-working side washer 6, a working side washer 7 and other fasteners.

[0066] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the alloy steel frog body 1 is provided with a wheel flange groove 101; the front end of the alloy steel frog body 1 is processed into a toe end protrusion 102, and the rear end is processed into a heel end protrusion 103. The bottom of the toe end protrusion 102 is processed into an inclined surface 1021. The inclined surface 1021 is in contact with the rail bottom surface of the left toe end rail 2 and the right toe end rail 3. The bottom of the heel end protrusion 103 is processed into an inclined surface 1031. The inclined surface 1031 is in contact with the rail bottom surface of the left heel end rail 4 and the right heel end rail 5. The toe end protrusion 102 is drilled with a horizontal bolt hole 1022. The heel end protrusion 103 is drilled with a horizontal bolt hole 1032.

[0067] like Figure 1 , Figure 2 , Figure 6 , Figure 7 As shown, the rail heads and rail bottoms of the left toe rail 2 and the right toe rail 3 are respectively processed with side surfaces 201 and side surfaces 301. The side surfaces 201 and side surfaces 301 are respectively fitted with two side surfaces of the toe protrusion 102. The rail waists of the left toe rail 2 and the right toe rail 3 are drilled with the same number of bolt holes as the toe protrusion 102, and the positions are corresponding.

[0068] like Figure 1 , Figure 3 , Figure 8 , Fig. 9 As shown, the rail heads and rail bottoms of the left heel-end rail 4 and the right heel-end rail 5 are respectively processed with side surfaces 401 and side surfaces 501. The side surfaces 401 and side surfaces 501 are respectively fitted with two side surfaces of the heel-end protrusion 103. The rail waists of the left heel-end rail 4 and the right heel-end rail 5 are drilled with the same number of bolt holes as the heel-end protrusion 103, and the positions are corresponding.

[0069] like Figure 1 , Figure 2 , Figure 3 As shown, the left toe rail 2, the right toe rail 3, the left heel rail 4, the right heel rail 5 and the alloy steel frog body 1 are assembled together using a non-working side washer 6, a working side washer 7, a high-strength bolt 8, a washer 9 and a nut 10.

[0070] Further, in a preferred embodiment of the present invention, Figure 4 , Figure 5 The alloy steel frog body 1 is made of a whole piece of alloy steel billet.

[0071] Further, in a preferred embodiment of the present invention, Figure 1 , Figure 5 , Fig.12 , Fig.13 The alloy steel frog body 1 can be welded by an upper steel plate 104 and a lower steel plate 105. The upper steel plate 104 can be made of NM400 steel plate or NM360 steel plate with high wear resistance. The lower steel plate 105 can be made of Q235 or Q355 steel plate.

[0072] Further, in a preferred embodiment of the present invention, Figure 1 , Figure 5 , Fig.12 , Fig.13 The thickness of the upper steel plate 104 is ≤80 mm, and the thickness of the lower steel plate 105 is ≥100 mm. The bolt holes drilled on the alloy steel frog body 1 are located on the lower steel plate 105 .

[0073] Further, in a preferred embodiment of the present invention, Figure 5 , five horizontal bolt holes are drilled in the toe end protrusion 102 and the heel end protrusion 103 respectively.

[0074] Further, in a preferred embodiment of the present invention, Figure 2 , Figure 3 The stability of the joint can be improved by applying A, B glue or other adhesives between the left toe rail 2, the right toe rail 3, the left heel rail 4, the right heel rail 5 and the alloy steel frog body 1.

[0075] Further, in a preferred embodiment of the present invention, the side edges 601 and 602 of the non-working side gasket 6 are of unequal length, and the side edges 701 and 702 of the working side gasket 7 are also of unequal length. After assembly, the contact surfaces of the non-working side gasket 6, the bolt 8, and the gasket 9 are parallel, and the contact surfaces of the working side gasket 7, the bolt 8, and the gasket 9 are also parallel.

[0076] Further, in a preferred embodiment of the present invention, Fig.14 , Fig.15 , Fig.16 , Fig.17 , Fig.18 , Fig.19The non-working side clamping plate 11, the working side clamping plate 12 and the leveling washer 13 can be used to replace the non-working side washer 6 and the working side washer 7 to achieve the tightening of the joint.

[0077] Further, in a preferred embodiment of the present invention, Fig.17 , Fig.18 , Fig.19 The leveling washer 13 is rectangular, and the lengths of the side 1301 and the side 1302 are different. After the leveling washer 13 is assembled, the contact surface of the leveling washer 13, the washer 9, and the bolt 8 are parallel.

[0078] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0079] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A tramway turnout alloy steel frog structure, characterized in that: It includes an alloy steel frog body, a left toe-end steel rail, a right toe-end steel rail, a left heel-end steel rail, a right heel-end steel rail and bolt pair fasteners; The alloy steel frog body is provided with a wheel flange groove; the front end of the alloy steel frog body is provided with a toe end protrusion, and the rear end is provided with a heel end protrusion; the bottom of the toe end protrusion is provided with a first inclined surface; the first inclined surface is used to fit with the rail bottom surface of the left toe end rail and the right toe end rail; the bottom of the heel end protrusion is provided with a second inclined surface, and the second inclined surface is used to fit with the rail bottom surface of the left heel end rail and the right heel end rail; the toe end protrusion and the heel end protrusion are both provided with horizontal bolt holes; The rail head and rail bottom of the left toe rail are respectively provided with a first side surface, and the rail head and rail bottom of the right toe rail are respectively provided with a second side surface; the first side surface and the second side surface are respectively in contact with the two side surfaces of the toe protrusion; the rail waists of the left toe rail and the right toe rail are provided with bolt holes of the same number as the toe protrusion, and the bolt holes are located correspondingly; The rail head and rail bottom of the left heel-end rail are respectively provided with a third side surface, and the rail head and rail bottom of the right heel-end rail are respectively provided with a fourth side surface; the third side surface and the fourth side surface are respectively in contact with the two side surfaces of the heel-end protrusion; the rail waists of the left heel-end rail and the right heel-end rail are provided with bolt holes of the same number as the heel-end protrusion, and the bolt holes are located correspondingly; The bolt pair fastener is used to assemble the left toe-end rail, the right toe-end rail, the left heel-end rail, the right heel-end rail and the alloy steel frog body together.

2. The alloy steel frog structure for tramway turnout according to claim 1, characterized in that: The alloy steel frog body is processed from a whole piece of alloy steel billet.

3. The alloy steel frog structure for tramway turnout according to claim 1, characterized in that: The alloy steel frog body is formed by welding an upper steel plate and a lower steel plate.

4. The alloy steel frog structure for tramway turnout according to claim 3, characterized in that: The upper steel plate is made of NM400 steel plate or NM360 steel plate; the lower steel plate is made of Q235 or Q355 steel plate.

5. The alloy steel frog structure for tramway turnout according to claim 3, characterized in that: The thickness of the upper steel plate is less than or equal to 80 mm, and the thickness of the lower steel plate is greater than or equal to 100 mm; the bolt holes drilled on the alloy steel frog body are located on the lower steel plate.

6. The alloy steel frog structure for tramway turnout according to claim 1, characterized in that: Adhesive is applied between the left toe-end steel rail, the right toe-end steel rail, the left heel-end steel rail, the right heel-end steel rail and the alloy steel frog body.

7. The alloy steel frog structure for tramway turnout according to claim 1, characterized in that: Non-working side washers are arranged between the left toe-end rail and the alloy steel frog body, and between the right toe-end rail and the alloy steel frog body; working side washers are arranged between the left heel-end rail and the alloy steel frog body, and between the right heel-end rail and the alloy steel frog body.

8. The alloy steel frog structure for tramway turnout according to claim 7, characterized in that: The non-working side washer and the working side washer each have unequal width structures on both sides. After assembly, the non-working side washer and the working side washer are each parallel to the contact surface of the bolt auxiliary fastener.

9. The alloy steel frog structure for tramway turnout according to claim 1, characterized in that: Non-working side clamps and leveling washers are provided between the left toe-end rail and the alloy steel frog body, and between the right toe-end rail and the alloy steel frog body; working side clamps and leveling washers are provided between the left heel-end rail and the alloy steel frog body, and between the right heel-end rail and the alloy steel frog body.

10. The alloy steel frog structure for tramway turnout according to claim 9, characterized in that: The leveling washer has a rectangular structure and the lengths of the sides on both sides are different. After the leveling washer is assembled, the contact surface of the leveling washer and the bolt pair fastener is parallel.

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