A type of off-track frog

Abstract

The present invention relates to the technical field of railway frogs, and proposes a track crossing frog, comprising a mainline rail; a toe-end lifting frog arranged outside the mainline rail, the toe-end lifting frog having a first guide slope, the first guide slope gradually increasing in height from one end away from the mainline rail to the end close to the mainline rail, and the first guide slope being used to abut against a track-changing wheel; a heel-end lifting frog arranged inside the mainline rail, the toe-end lifting frog and the heel-end lifting frog forming an angle with the mainline rail, the heel-end lifting frog having a support platform on the side close to the mainline rail, a passage space formed between the support platform and the mainline rail, the passage space being used for straight-traveling wheels to pass through, and the track-changing wheel abutting against the support platform after crossing the mainline rail. The above technical solution solves the problem of the existing track crossing frog having a complex structure and inconvenient maintenance.

Description

Technical Field

[0001] The present invention relates to the technical field of railway frogs, and in particular to an off-track frog. Background Art

[0002] In the railway industry, frogs are critical equipment for switching trains from one track to another. With the continuous development of railway transportation, the performance requirements for frogs are also increasing. Traditional frogs have exposed some problems in their long-term use, especially in their structure.

[0003] Currently, although existing overtaking frogs eliminate harmful spaces during track changes, they are generally complex in structure. This is because their design often needs to consider multiple factors, such as the train's speed, load, and track geometry. The complex structure not only increases the difficulty and cost of manufacturing, but also brings many inconveniences during installation, maintenance, and overhaul. For example, the manufacturing process requires high-precision processing equipment and complex processes, resulting in long production cycles and high costs. During installation, due to the complex structure, professional technicians are required to operate, which consumes a lot of time and manpower. In terms of maintenance and overhaul, the complex structure makes troubleshooting and repair difficult, increasing the cost and risk of railway operations.

[0004] Furthermore, complex structures can affect the reliability and service life of frogs. Excessive components and complex connections can lead to failures, reducing the frog's overall performance. Complex structures can also lead to stress concentration and other issues, compromising the frog's strength and durability. Summary of the Invention

[0005] The present invention provides an over-track frog, which solves the problem that the over-track frog in the related art has a complex structure and is inconvenient to maintain.

[0006] The technical solutions of the present invention are as follows:

[0007] An off-track frog, comprising

[0008] Mainline rails;

[0009] a toe-end raising frog, the toe-end raising frog being arranged outside the main line rail, the toe-end raising frog having a first guiding inclined surface, the first guiding inclined surface gradually increasing in height from an end away from the main line rail to an end close to the main line rail, the first guiding inclined surface being used to abut against a rail-changing wheel;

[0010] A heel-end lifting frog is provided, wherein the heel-end lifting frog is arranged on the inner side of the main line rail, an angle is formed between the toe-end lifting frog and the heel-end lifting frog and the main line rail, and the heel-end lifting frog has a support platform on the side close to the main line rail, a passing space is formed between the support platform and the main line rail, and the passing space is used for straight-traveling wheels to pass through, and the rail-changing wheel abuts against the support platform after crossing the main line rail.

[0011] Optionally, also include

[0012] An extension rail is provided at one end of the heel-end lifting frog close to the main line rail, a guide space is formed between the extension rail and the main line rail, and the guide space is communicated with the passing space.

[0013] Optionally, the opening of the guide space gradually increases from one end close to the passing space to one end away from the passing space.

[0014] Optionally, the first guide slope is at the same height as the main line rail near one end of the main line rail, and the support platform is at a higher height than the main line rail near one end of the main line rail.

[0015] Optionally, also include

[0016] A first guard rail is provided on a side of the toe-end lifting frog away from the main line rail, and the first guide slope is located between the first guard rail and the toe-end lifting frog.

[0017] Optionally, also include

[0018] A transition platform is provided on the heel-end lifting frog, the upper surface of the transition platform smoothly transitions with the upper surfaces of the support platform and the heel-end lifting frog, and the side wall of the transition platform close to one end of the main line rail smoothly transitions with the side walls of the support platform and the heel-end lifting frog.

[0019] Optionally, the toe lift frog includes

[0020] a first body, the first body being disposed on an outer side of the main line rail, the first body having a first connecting portion, the first guide slope being located on the first body, and the first body being connected to the main line rail via a fastener;

[0021] The first track has the angle with the main line rail, the first connecting portion is located between the main line rail and the first track, and the first track, the first connecting portion and the main line rail are also connected by the fastener.

[0022] Optionally, the heel end lifting frog includes

[0023] a second body, the second body being disposed on the inner side of the main line rail, the second body having a second connecting portion, the support platform and the transition platform being located on the second body, the extension rail being located at one end of the second body near the toe lift frog, and the second body and the main line rail being connected by the fastener;

[0024] The second rail has the included angle with the main line rail, the second connecting portion is located between the main line rail and the second rail, and the second rail, the second connecting portion and the main line rail are connected by the fastener.

[0025] Optionally, the fastener includes

[0026] Limiting table;

[0027] A connecting rod, one end of which is disposed on the limiting platform, and the connecting rod has an inner cavity;

[0028] a clamping member, the clamping member being slidably arranged along the radial direction of the connecting rod, one end of the connecting rod penetrating the side wall of the connecting rod and then being located in the inner cavity;

[0029] a push rod, one end of which is slidably disposed in the inner cavity, the push rod having an annular groove and an inclined push surface, the end of the clamping member located in the inner cavity abutting against the annular groove or the inclined push surface, and the other end of the push rod being located outside the inner cavity;

[0030] There are two fastening nuts, one of which is threadedly connected to the connecting rod, and the other is threadedly connected to the connection between the connecting rod and the pushing rod, and a fastening space is formed between the limit platform and the fastening nuts.

[0031] Optionally, the fastener further includes

[0032] a spring button, the spring button being slidably disposed on one end of the clamping member located in the inner cavity;

[0033] A connecting ring is provided at one end of the push rod located outside the inner cavity. After the push rod slides, the connecting ring abuts or cancels the abutment with the end face of the connecting rod. The connection point is located between the connecting rod and the connecting ring.

[0034] The working principle and beneficial effects of the present invention are:

[0035] In the present invention, in order to solve the problem of complex and inconvenient maintenance of the riding frog structure in the related art, the frog is designed as a split structure, including three parts: the mainline rail, the toe-end lifting frog, and the heel-end lifting frog. This is convenient for processing, transportation, and layout. At the intersection of the railway tracks, the mainline rail is laid in the middle position. The toe-end lifting frog is arranged on the outside of the mainline rail. Its first guide slope is made smooth and flat, starting from the end away from the mainline rail and gradually rising towards the mainline rail. The heel-end lifting frog is arranged on the inside of the mainline rail, forming a certain angle with the mainline rail. A support platform is provided on the side of the heel-end lifting frog close to the mainline rail. The passage space between the support platform and the mainline rail is of moderate size, allowing the straight-running wheels to pass smoothly. At the same time, the support platform can provide stable support for the track-changing wheels after they pass over the mainline rail. This has created a simple and effective riding frog structure. The first guide slope can accurately guide the track-changing wheels, making the track-changing process smoother; the design of the support platform and the passing space ensures the orderly operation of the straight-moving wheels and the track-changing wheels, improving the efficiency and safety of railway operation.

[0036] The working principle of the present invention is that a passage space is provided between the main line rail and the support platform for the straight-moving wheels to ensure the travel of the main line vehicles. The toe-end lifting frog and the heel-end lifting frog are respectively distributed on both sides of the main line rail. The wheel for track change first enters the first conductor slope. As the first guide slope rises, the track change wheel can smoothly transition to the main line rail, and after passing the main line rail, it abuts against the support platform, so that the track change wheel can smoothly travel from the toe-end lifting frog to the heel-end lifting frog. During the entire track change process, the track change wheel is always in contact with the track, which improves smoothness, safe operation, and less driving noise. And with a split design, if the toe-end lifting frog, the heel-end lifting frog or the main line rail is damaged, they can be replaced separately, which is convenient for maintenance and has low maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The preferred embodiments will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention.

[0038] Figure 1 This is a schematic diagram of the arrangement structure of the frog in the track of the present invention;

[0039] Figure 2 It is a schematic diagram of the structure of the present invention;

[0040] Figure 3 This is a structural schematic diagram of the present invention from another angle;

[0041] Figure 4 Schematic diagram of the fastener structure of the present invention;

[0042] Figure 5 It is a cross-sectional view of the local structure of the fastener of the present invention.

[0043] In the figure: 1. main line rail, 2. toe-end lifting frog, 21. first guide slope, 3. heel-end lifting frog, 31. support platform, 311. passing space, 4. extension rail, 41. guide space, 5. first guard rail, 12. transition platform, 22. first main body, 221. first connecting part, 6. fastener, 23. first track, 32. second main body, 321. second connecting part, 33. second track, 61. limit platform, 62. connecting rod, 621. inner cavity, 63. clamping part, 64. push rod, 641. ring groove, 642. pushing slope, 65. fastening nut, 66. spring button, 67. connecting ring. DETAILED DESCRIPTION

[0044] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific embodiments of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings and other embodiments can be obtained based on these drawings without inventive work.

[0045] To simplify the drawings, only portions relevant to the invention are schematically depicted in each figure; they do not represent the actual structure of the product. Furthermore, to simplify the drawings and facilitate understanding, in some figures, only one component with the same structure or function is schematically depicted or labeled. In this document, "one" not only means "only one" but also "more than one," and "several" includes "two" and "more than two."

[0046] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0047] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0048] Reference Figures 1 to 5, which is a first embodiment of the present invention, proposes a track crossing frog, including a mainline rail 1; a toe-end lifting frog 2 is arranged on the outside of the mainline rail 1, and the toe-end lifting frog 2 has a first guide slope 21, the first guide slope 21 gradually increases in height from the end away from the mainline rail 1 to the end close to the mainline rail 1, and the first guide slope 21 is used to abut against the rail-changing wheel; the heel-end lifting frog 3 is arranged on the inside of the mainline rail 1, and the toe-end lifting frog 2 and the heel-end lifting frog 3 have an angle with the mainline rail 1, and the heel-end lifting frog 3 has a support platform 31 on the side close to the mainline rail 1, and a passing space 311 is formed between the support platform 31 and the mainline rail 1, and the passing space 311 is used for the straight-traveling wheel to pass through, and the rail-changing wheel abuts against the support platform 31 after crossing the mainline rail 1.

[0049] To address the complex and inconvenient maintenance issues of conventional frogs, this embodiment employs a split-type frog design consisting of a mainline rail 1, a toe-end lift frog 2, and a heel-end lift frog 3. This design facilitates fabrication, transportation, and deployment. At the intersection of the railway tracks, the mainline rail 1 is laid in the center. The toe-end lift frog 2 is positioned outside the mainline rail 1. Its first guide slope 21 is smooth and flat, rising from the end away from the mainline rail 1 toward the mainline rail 1. The heel-end lift frog 3 is positioned inside the mainline rail 1, forming a predetermined angle with the mainline rail 1. A support platform 31 is provided on the side of the heel-end lift frog 3 closest to the mainline rail 1. The clearance 311 between the support platform 31 and the mainline rail 1 is appropriately sized to allow for smooth passage of straight-traveling wheels while also providing stable support for track-changing wheels after they pass over the mainline rail 1. A simple and effective riding frog structure is constructed. The first guide slope 21 can accurately guide the track-changing wheels, making the track-changing process smoother. The design of the support platform 31 and the passage space 311 ensures the orderly operation of the straight-running wheels and the track-changing wheels, improving the efficiency and safety of railway operations.

[0050] Specifically, a passage space 311 is provided between the mainline rail 1 and the support platform 31 for the straight-moving wheels to ensure the travel of the mainline vehicles. The toe-end lifting frog 2 and the heel-end lifting frog 3 are respectively distributed on both sides of the mainline rail 1. The wheel for track change first enters the first conductor slope. As the first guide slope 21 rises, the wheel for track change can smoothly transition to the mainline rail 1, and after passing the mainline rail 1, it abuts against the support platform 31, so that the wheel for track change can smoothly travel from the toe-end lifting frog 2 to the heel-end lifting frog 3. During the entire track change process, the wheel for track change is always in contact with the track, which improves smoothness, ensures safe operation, and reduces driving noise. In addition, a split design is adopted, and if the toe-end lifting frog 2, the heel-end lifting frog 3 or the mainline rail 1 is damaged, it can be replaced separately, which is convenient for maintenance and has low maintenance costs.

[0051] Furthermore, an extension rail 4 is included. The extension rail 4 is arranged at one end of the heel-end lifting frog 3 close to the main line rail 1. A guide space 41 is formed between the extension rail 4 and the main line rail 1. The guide space 41 is connected to the passing space 311.

[0052] In this embodiment, an extension rail 4 is installed at the end of the heel-end lift frog 3 closest to the mainline rail 1. The guide space 41 formed between the extension rail 4 and the mainline rail 1 is regularly shaped and closely connected to the passage space 311. When a straight-moving wheel passes over the mainline rail 1, it first enters the guide space 41 and then smoothly transitions into the passage space 311. The extension rail 4 and support platform 31 work together to act as a rail guard during the passage of the straight-moving wheel, ensuring smooth and stable operation even when passing through the frog area.

[0053] Furthermore, the opening of the guide space 41 gradually increases from an end close to the passing space 311 to an end away from the passing space 311 .

[0054] In this embodiment, the shape of guide space 41 is carefully designed, with its opening gradually increasing in size from the end closest to passage space 311 toward the end further away from passage space 311. In actual installation, the size and angle of guide space 41 are ensured to meet design requirements to better guide the straight-moving wheels. This gradually increasing opening design makes it easier for straight-moving wheels to enter guide space 41, and thus smoothly enter passage space 311, improving the reliability and stability of railway operation.

[0055] Furthermore, the first guide slope 21 is at the same height as the main rail 1 at one end thereof, and the support platform 31 is at a higher height than the main rail 1 at one end thereof.

[0056] In this embodiment, during the manufacturing and installation process, the height of the first guide ramp 21 near the mainline rail 1 is strictly controlled to ensure that it is identical to the mainline rail 1. Furthermore, the height of the support platform 31 near the mainline rail 1 is set higher than the mainline rail 1, ensuring that the height difference between the two meets design requirements. The first guide ramp 21 is at the same height as the mainline rail 1, ensuring a smooth transition for the rail-changing wheel when approaching the mainline rail 1. The support platform 31 is higher than the mainline rail 1, providing stable support for the rail-changing wheel and improving the efficiency and safety of rail-changing. When the rail-changing wheel travels on the toe-lift frog 2, its wheel flange contacts the first guide ramp 21. As the train travels, the wheel flange smoothly transitions from the end of the first guide ramp 21 to the mainline rail 1. Subsequently, because the support platform 31 is higher than the mainline rail 1 and there is a passage space 311 between the support platform 31 and the mainline rail 1, the tread of the rail-changing wheel contacts the support platform 31. The height difference between the support platform 31 and the main line rail 1 needs to be adjusted according to the size of the rail-changing wheel to ensure the smoothness and stability of the rail-changing.

[0057] Furthermore, a first guard rail 5 is included. The first guard rail 5 is arranged on a side of the toe-end lifting frog 2 away from the main line rail 1 , and the first guide slope 21 is located between the first guard rail 5 and the toe-end lifting frog 2 .

[0058] In this embodiment, a first guardrail 5 is installed on the side of the toe-lift frog 2 facing away from the mainline rail 1. The size and shape of the first guardrail 5 match the toe-lift frog 2, ensuring that the first guide ramp 21 is located between the first guardrail 5 and the toe-lift frog 2. In actual use, the first guardrail 5 effectively prevents derailment of the track-changing wheels. The first guardrail 5 provides additional protection for the track-changing wheels, reducing the risk of derailment and improving railway operation safety. Furthermore, the location of the first guide ramp 21 between the first guardrail 5 and the toe-lift frog 2 makes the structure more compact and improves space utilization.

[0059] Furthermore, it also includes a transition platform 12, which is arranged on the heel-end lifting fork 3. The upper surface of the transition platform 12 smoothly transitions with the upper surface of the support platform 31 and the heel-end lifting fork 3, and the side wall of the transition platform 12 close to the end of the main line rail 1 smoothly transitions with the side wall of the support platform 31 and the heel-end lifting fork 3.

[0060] In this embodiment, a transition platform 12 is provided on the heel-end lift frog 3. The upper surface of the transition platform 12 is designed to be smooth and seamlessly connected to the upper surfaces of the support platform 31 and the heel-end lift frog 3. The side wall of the transition platform 12 near the end of the mainline rail 1 is also smoothed, forming a perfect transition with the side walls of the support platform 31 and the heel-end lift frog 3. The provision of the transition platform 12 allows the rail-changing wheels to smoothly travel on the heel-end lift frog 3 via the transition platform 12 after transitioning from the mainline rail 1 to the support platform 31, thereby reducing impact and wear. At the same time, the smooth transition design improves the comfort and stability of railway operation.

[0061] Furthermore, the toe-end lifting frog 2 includes a first main body 22, which is arranged on the outside of the main line rail 1. The first main body 22 has a first connecting portion 221, and the first guide slope 21 is located on the first main body 22. The first main body 22 and the main line rail 1 are connected by a fastener 6; there is an angle between the first rail 23 and the main line rail 1, and the first connecting portion 221 is located between the main line rail 1 and the first rail 23. The first rail 23, the first connecting portion 221 and the main line rail 1 are also connected by a fastener 6.

[0062] In this embodiment, the toe-lift frog 2 is divided into two parts: a first main body 22 and a first track 23. The first main body 22 is disposed outside the mainline rail 1 and connected to the mainline rail via a fastener 6. A first connecting portion 221 is provided on the first main body 22, and a first guide ramp 21 is located on the first main body 22. The first track 23 forms a certain angle with the mainline rail 1, and the first connecting portion 221 is located between the mainline rail 1 and the first track 23. The first track 23, the first connecting portion 221, and the mainline rail 1 are securely connected via a fastener 6. This split design facilitates the installation and removal of the toe-lift frog 2 and facilitates maintenance and overhaul. Furthermore, the provision of the first connecting portion 221 enhances the stability of the connection between the toe-lift frog 2 and the mainline rail 1, thereby improving the overall strength of the frog.

[0063] Furthermore, the toe-end lifting frog 3 includes a second main body 32, which is arranged on the inner side of the main line rail 1. The second main body 32 has a second connecting portion 321. The support platform 31 and the transition platform 12 are located on the second main body 32. The extension rail 4 is located at one end of the second main body 32 close to the toe-end lifting frog 2. The second main body 32 and the main line rail 1 are connected by a fastener 6; there is an angle between the second rail 33 and the main line rail 1, and the second connecting portion 321 is located between the main line rail 1 and the second rail 33. The second rail 33, the second connecting portion 321 and the main line rail 1 are connected by a fastener 6.

[0064] In this embodiment, the split heel-end lift frog 3 facilitates installation, removal, and maintenance. The provision of the second connecting portion 321 enhances the connection strength between the heel-end lift frog 3 and the mainline rail 1, ensuring the frog's stability and reliability during use. The integrated design of the support platform 31, transition platform 12, and extension rail 4 results in a more compact structure and improved functionality.

[0065] Furthermore, the fastener 6 includes a limit platform 61; one end of the connecting rod 62 is arranged on the limit platform 61, and the connecting rod 62 has an inner cavity 621; the clamping piece 63 is arranged to slide along the radial direction of the connecting rod 62, and one end of the connecting rod 62 passes through the side wall of the connecting rod 62 and is located in the inner cavity 621; one end of the pushing rod 64 is slidably set in the inner cavity 621, and the pushing rod 64 has an annular groove 641 and a pushing inclined surface 642, and one end of the clamping piece 63 located in the inner cavity 621 abuts against the annular groove 641 or the pushing inclined surface 642, and the other end of the pushing rod 64 is located outside the inner cavity 621; there are two fastening nuts 65, one fastening nut 65 is threadedly connected to the connecting rod 62, and the other fastening nut 65 is threadedly connected to the connection between the connecting rod 62 and the pushing rod 64, and a fastening space is formed between the limit platform 61 and the fastening nut 65.

[0066] In this embodiment, the fastener 6 is composed of a limit platform 61, a connecting rod 62, a clamping member 63, a push rod 64 and a fastening nut 65. A fastening space is formed between the limit platform 61 and the fastening nut 65, which is used to clamp the parts of the track that need to be connected together. One end of the connecting rod 62 is set on the limit platform 61, and an inner cavity 621 is provided inside. The connecting member is used to be installed in the mounting hole of the track to be connected, and the clamping member 63 is set to slide along the radial direction of the connecting rod 62, and one end is located in the inner cavity 621 after passing through the side wall of the connecting rod 62. One end of the push rod 64 is slidably set in the inner cavity 621, and has an annular groove 641 and a pushing inclined surface 642. The end of the clamping member 63 located in the inner cavity 621 abuts against the annular groove 641 or the pushing inclined surface 642. After the push rod 64 slides toward the inside of the inner cavity 621, the clamping member 63 slides outward due to the push of the push inclined surface 642, and the clamping member 63 can abut against the side wall of the mounting hole, thereby improving the stability of the connection of the fastener 6. The other end of the push rod 64 is located outside the inner cavity 621, and a fastening nut 65 is threadedly connected to the connecting rod 62, and another fastening nut 65 is threadedly connected to the connection between the connecting rod 62 and the push rod 64. The two fastening nuts 65 are arranged opposite each other, which can not only fix the position of the push rod 64, but also make the loosening performance of the fastener 6 better. This fastener 6 can firmly connect each track, ensuring that the frog will not loosen or move during use. The matching design of the clamping member 63 and the push rod 64 makes the installation and disassembly of the fastener 6 more convenient and quick, and improves work efficiency. The provision of the two fastening nuts 65 enhances the stability and reliability of the connection.

[0067] Furthermore, the fastener 6 also includes a spring button 66, which is slidably arranged at one end of the clamping member 63 located in the inner cavity 621; the connecting ring 67 is arranged at one end of the pushing rod 64 located outside the inner cavity 621. After the pushing rod 64 slides, the connecting ring 67 abuts or cancels the abutment with the end face of the connecting rod 62, and the connection is located between the connecting rod 62 and the connecting ring 67.

[0068] In this embodiment, a spring button 66 is provided at one end of the clamping member 63 located in the inner cavity 621 to increase the contact stability between the clamping member 63 and the push rod 64. A connecting ring 67 is provided at one end of the push rod 64 located outside the inner cavity 621. When the push rod 64 slides, the connecting ring 67 abuts or cancels the abutment with the end face of the connecting rod 62, making it convenient to fix the push rod 64 and the connecting rod 62 together by fastening the nut 65. The provision of the spring button 66 ensures stable contact between the clamping member 63 and the push rod 64, and prevents the clamping member 63 from falling off. When the clamping member 63 is installed at the same time, the spring button 66 can be retracted into the inside of the clamping member 63, making the connection convenient. The provision of the connecting ring 67 makes the operation of the push rod 64 more convenient, and also enhances the overall strength and reliability of the fastener 6.

[0069] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An off-track frog, characterized in that: include Main line rails (1); A toe-end lifting frog (2), the toe-end lifting frog (2) being arranged outside the main line rail (1), the toe-end lifting frog (2) having a first guide slope (21), the first guide slope (21) gradually increasing in height from an end away from the main line rail (1) to an end close to the main line rail (1), the first guide slope (21) being used to abut against a rail-changing wheel; A heel-end lifting frog (3), the heel-end lifting frog (3) is arranged on the inner side of the main line rail (1), the toe-end lifting frog (2) and the heel-end lifting frog (3) have an included angle with the main line rail (1), the heel-end lifting frog (3) has a support platform (31) on the side close to the main line rail (1), a passing space (311) is formed between the support platform (31) and the main line rail (1), the passing space (311) is used for straight-moving wheels to pass through, and the rail-changing wheel abuts against the support platform (31) after passing over the main line rail (1); The toe-lift frog (2) comprises a first main body (22), the first main body (22) being arranged outside the main line rail (1), the first main body (22) having a first connecting portion (221), the first guide inclined surface (21) being located on the first main body (22), and the first main body (22) and the main line rail (1) being connected via a fastener (6); a first track (23), wherein the first track (23) and the main line rail (1) have the included angle therebetween, the first connecting portion (221) is located between the main line rail (1) and the first track (23), and the first track (23), the first connecting portion (221) and the main line rail (1) are also connected via the fastener (6); The fastener (6) comprises Limiting table (61); a connecting rod (62), one end of the connecting rod (62) being disposed on the limiting platform (61), and the connecting rod (62) having an inner cavity (621); a clamping member (63), the clamping member (63) being arranged to slide radially along the connecting rod (62), one end of the clamping member (63) passing through the side wall of the connecting rod (62) and then being located in the inner cavity (621), and the clamping member (63) being capable of abutting against the side wall of the mounting hole for mounting the fastener (6); A push rod (64), one end of the push rod (64) is slidably disposed in the inner cavity (621), the push rod (64) having an annular groove (641) and a push inclined surface (642), one end of the clamping member (63) located in the inner cavity (621) abuts against the annular groove (641) or the push inclined surface (642), and the other end of the push rod (64) is located outside the inner cavity (621); A fastening nut (65), wherein the fastening nut (65) has two fastening nuts (65), one fastening nut (65) is threadedly connected to the connecting rod (62), and the other fastening nut (65) is threadedly connected to the connection between the connecting rod (62) and the push rod (64), and the two fastening nuts (65) are arranged opposite to each other, and a fastening space is formed between the limiting platform (61) and the fastening nuts (65); A connecting ring (67) is provided at one end of the push rod (64) located outside the inner cavity (621); after the push rod (64) slides, the connecting ring (67) abuts against or cancels the abutment with the end face of the connecting rod (62); and the connection is located between the connecting rod (62) and the connecting ring (67).

2. The off-track frog according to claim 1, characterized in that: Also includes An extension rail (4) is provided at one end of the heel-end lifting frog (3) close to the main line rail (1), a guide space (41) is formed between the extension rail (4) and the main line rail (1), and the guide space (41) is communicated with the passing space (311).

3. The off-track frog according to claim 2, characterized in that: The opening of the guide space (41) gradually increases from an end close to the passing space (311) to an end away from the passing space (311).

4. The off-track frog according to claim 1, characterized in that: The first guide slope (21) is at the same height as the main line rail (1) at one end thereof, and the support platform (31) is at a higher height than the main line rail (1) at one end thereof.

5. The off-track frog according to claim 1, characterized in that: Also includes A first guard rail (5) is provided on a side of the toe-end lifting frog (2) away from the main line rail (1), and the first guide slope (21) is located between the first guard rail (5) and the toe-end lifting frog (2).

6. The off-track frog according to claim 2, characterized in that: Also includes A transition platform (12) is provided on the heel-end lifting frog (3), an upper surface of the transition platform (12) smoothly transitions with the upper surfaces of the support platform (31) and the heel-end lifting frog (3), and a side wall of the transition platform (12) close to one end of the main line rail (1) smoothly transitions with the side walls of the support platform (31) and the heel-end lifting frog (3).

7. The off-track frog according to claim 6, characterized in that: The heel end lifting frog (3) includes a second main body (32), the second main body (32) being arranged on the inner side of the main line rail (1), the second main body (32) having a second connecting portion (321), the support platform (31) and the transition platform (12) being located on the second main body (32), the extension rail (4) being located at one end of the second main body (32) close to the toe-end lifting frog (2), and the second main body (32) and the main line rail (1) being connected via the fastener (6); A second track (33), wherein the second track (33) and the main line rail (1) have the included angle therebetween, the second connecting portion (321) is located between the main line rail (1) and the second track (33), and the second track (33), the second connecting portion (321), and the main line rail (1) are connected via the fastener (6).

8. The off-track frog according to claim 1, characterized in that: The fastener (6) also includes A spring button (66) is slidably disposed at one end of the clamping member (63) located within the inner cavity (621).

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