Rotatable point rail frog

Abstract

The invention relates to a rotatable point rail frog, which belongs to the technical field of railway traffic equipment and comprises a frog point rail, a sliding bed bedplate is arranged below the frog point rail, a toe end rail is arranged at one end of the frog point rail, a heel end rail is arranged at the other end of the frog point rail, and a rotating shaft is arranged at one end, close to the heel end rail, of the frog point rail. The fork point rail is rotationally connected with the sliding bed bedplate through a rotating shaft, and a switch machine for driving the fork point rail to rotate is further arranged on the sliding bed bedplate. The frog throat structure has the effects of reducing harmful space of a traditional frog throat and improving stability and safety.

Description

Technical Field

[0001] The present application relates to the field of railway transportation equipment, and in particular to a rotatable point rail frog. Background Art

[0002] Turnouts are one of the common equipment in railway and other rail transportation fields. Turnouts allow locomotives to transfer from one track to another and are also one of the weak links in the track.

[0003] A turnout consists of three units: a switch, a connecting part, a frog, and a guardrail. The guardrail unit includes a fixed frog core, wing rails, and a guardrail, and its function is to protect the wheels from passing through the intersection of two track lines.

[0004] However, when the wheel passes through the frog, there is a gap between the narrowest part of the two wing rails and the tip of the frog core. When the wheel passes through this gap, it is possible to derail due to going into the wrong frog groove. Summary of the Invention

[0005] In order to reduce the harmful space of the traditional frog throat and improve stability and safety, the present application provides a rotatable frog.

[0006] The present application provides a rotatable frog using the following technical solution: A rotatable point rail frog comprises a fork point rail, a slide bed plate is provided below the fork point rail, a toe end rail is provided at one end of the fork point rail, and a heel end rail is provided at the other end, a rotating shaft is provided at the end of the fork point rail close to the heel end rail, and is rotatably connected to the slide bed plate via the rotating shaft, and a switch machine for driving the fork point rail to rotate is also provided on the slide bed plate.

[0007] By adopting the above technical solution, the fork heart rail is placed on the slide bed plate. Under the action of the switch machine, the fork heart rail can rotate within a small stroke range with the rotating shaft as the axis. As the fork heart rail rotates, the fork heart rail is closely attached to the wing rail in the same direction as the opened track, and is separated from the other wing rail, thereby eliminating the harmful space of the ordinary turnout, thereby improving the stability and safety performance of the turnout. At the same time, the structure is simple, easy to transport and replace, and improves maintenance efficiency.

[0008] Optionally, rail supports are provided on both sides of the fork center rail, and the rail supports are arranged on the slide bed plate. The rail supports on both sides of the fork center rail are symmetrically arranged about the center line of the rotation angle of the fork center rail.

[0009] By adopting the above technical solution, the rail support fits the waistline of the side wall of the fork heart rail. When one side of the fork heart rail is the working surface for supporting the wheel, the other side fits with the rail support, so that the fork heart rail can be reinforced in the non-working state. The same applies when the fork heart rail is rotated to the other side, thereby improving the stability of the fork heart rail.

[0010] Optionally, a core hole is provided on the fork center rail, the rotating shaft is arranged in the core hole, a roller bearing and a pressure bearing are installed on the rotating shaft, the rotating shaft is connected to the inner wall of the core hole through the roller bearing, and the rotating shaft is also provided with a thread, and a spring washer and a nut are connected through the thread, and the nut presses the spring washer onto the pressure bearing.

[0011] By adopting the above technical solution, the rotating shaft plays the role of positioning and rotating axis. At the same time, the roller bearing can reduce the friction during the rotation of the fork center rail, thereby maintaining the flexibility of the fork center rail during rotation. The roller bearing is pressed and fixed with nuts and spring washers to maintain overall stability.

[0012] Optionally, an end cover is provided at one end of the rotating shaft away from the slide bed plate, and the end cover blocks the core hole. Lubricating grease is also provided at one end of the core hole close to the end cover.

[0013] By adopting the above technical solution, the end cover can prevent dust and rainwater from entering the core hole, and the lubricating grease can further reduce the friction on the roller bearing. At the same time, the lubricating grease also plays a sealing role, preventing dust and rainwater from entering and flowing.

[0014] Optionally, the switch machine includes a slide plate arranged under the fork center rail, one end of the slide plate is rotatably connected to a pull rod, and gusset plates are provided on both sides of the fork center rail, wherein the gusset plate on one side is welded to the slide plate, and the gusset plate on the other side is installed on the slide plate by bolts and nuts, and a double coil spring is provided between the bolts and the gusset plate.

[0015] By adopting the above technical solution, the pull rod is pulled, the slide plate moves with the traction of the pull rod, the slide plate drives the gusset plate to move, and at the same time the gusset plate drives the fork center rail to rotate.

[0016] Optionally, a stopper is abutted on a side of the gusset plate away from the fork center rail, and the stopper is welded to the slide plate.

[0017] By adopting the above technical solution, the block further reinforces the gusset plate, thereby improving the stability of the connection between the gusset plate and the fork rail Optionally, the toe rail includes two steel rails, a rail bottom is provided at the lower end of the steel rail, and a 5mm gap is provided between adjacent rail bottoms. A pad is also provided under the steel rail, and the steel rail is connected to the pad through a Type II elastic fastener. A spacer block is also provided between the two steel rails, and the spacer block is connected to the steel rail through bolts.

[0018] By adopting the above technical solution, the two steel rails of the toe rail are stably connected, the integrity of the connection is improved, and the impact resistance is further improved.

[0019] Optionally, the heel rail structure is the same as the toe rail structure, and a 5mm thick rubber gasket is provided under the rail bottom, and a 10mm thick rubber gasket is provided under the pad.

[0020] By adopting the above technical solution, the rubber gasket can provide a buffer for the whole, reducing the possibility of damage caused by impact due to rigid connection.

[0021] In summary, this application includes at least one of the following beneficial technical effects: The fork rail is placed on the slide bed. Under the action of the switch machine, the fork rail can rotate within a small stroke range with the rotating shaft as the axis. As the fork rail rotates, the fork rail is closely attached to the wing rail in the same direction as the opened track, and is separated from the other wing rail, thereby eliminating the harmful space of the ordinary turnout, thereby improving the stability and safety performance of the turnout. At the same time, the structure is simple, easy to transport and replace, and improves maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0023] Figure 2 It is a schematic diagram of the internal structure of the core hole in an embodiment of the present application.

[0024] Figure 3 It is a structural schematic diagram of a switch machine according to an embodiment of the present application.

[0025] Figure 4 It is a schematic diagram of the connection structure between the fork center rail and the rail support in an embodiment of the present application.

[0026] Explanation of the accompanying reference numerals: 1. Toe rail; 11. Steel rail; 12. Rail bottom; 13. Spacer iron; 2. Fork rail; 21. Core hole; 22. Rotating shaft; 23. Roller bearing; 24. Pressure bearing; 25. Nut; 26. Spring washer; 27. End cover; 3. Heel rail; 4. Slider bed; 41. Rail support; 5. Switch; 51. Pull rod; 52. Slide plate; 53. Clamp plate; 54. Stop block. DETAILED DESCRIPTION

[0027] The present application is further described in detail below with reference to the accompanying drawings.

[0028] The embodiment of the present application discloses a rotatable frog. Figure 1 A rotatable point rail frog comprises a toe rail 1, a fork point rail 2, and a heel rail 3. The toe rail 1 comprises two steel rails 11, which are made of U75V inline quenching rails. A rail base 12 is installed at the tail end of the rail 11. The rail base 12 is processed so that the rail bases 12 of the two rails 11 do not cross-interfere with each other, and a 5mm gap is set between the two rail bases 12.

[0029] The two rails 11 are mounted on a common base plate, connected to the base plate via Type II spring clip fasteners. To ensure the integrity of the two rails 11 and enhance impact resistance, a spacer iron 13 is installed between the two rails 11 and bolted to the rail base 12. The non-working surface of the rails 11 is reinforced and supported by Type II spring clip fasteners. Rubber gaskets of 5 mm and 10 mm can be added to the rail base 12 and base plate, respectively, to enhance shock absorption.

[0030] The fork rail 2 is made of wear-resistant alloy steel and is processed through multiple processes such as forging, heat treatment, and machining. The height of the alloy steel is manufactured according to the height of the same type of AT rail (50AT or 60AT rail), thereby reducing the height of the fork rail 2, thereby reducing material usage and improving its height stability.

[0031] Reference Figure 1 and Figure 2 In order to ensure that the sliding height of the bottom 12 of the fork center rail 2 is consistent, a slide bed plate 4 is provided under the fork center rail 2. A core hole 21 is opened at the end of the fork center rail 2 away from the toe end rail 1, and a rotating shaft 22 is provided in the core hole 21. The rotating shaft 22 is also fixedly connected to the slide bed plate 4. The rotating shaft 22 is made of 40Cr after heat treatment. The rotating shaft 22 and the core hole 21 are made according to the small clearance of the basic hole system, so that the rotating shaft 22 plays the role of positioning the center of the rotating shaft 22. In order to reduce the friction resistance between the rotating shaft 22 and the fork center rail 2, a roller bearing 23 and a pressure bearing 24 are installed at the lower end of the rotating shaft 22, and a pressure bearing 24 and a thread are installed at the upper end of the rotating shaft 22. The rotating shaft 22 is connected to a nut 25 through a thread, and a spring washer 26 is provided between the nut 25 and the pressure bearing 24. The nut 25 presses the spring washer 26 on the pressure bearing 24.

[0032] An end cap 27 is provided at the end of the rotating shaft 22 away from the slide bed plate 4. The end cap 27 seals the core hole 21. Lubricating grease is also provided at the end of the core hole 21 near the end cap 27. The end cap 27 prevents dust and rainwater from entering the core hole 21. The lubricating grease further reduces the friction on the roller bearing 23 and also acts as a seal to prevent the ingress and flow of dust and rainwater.

[0033] The fork center rail 2 is rotated by the rotating shaft 22 , and at the same time, the roller bearing 23 and the pressure bearing 24 between the rotating shaft 22 and the fork center rail 2 reduce the friction force, thereby allowing the fork center rail 2 to rotate flexibly.

[0034] Reference Figure 1 and Figure 3A switch machine 5 for driving the fork rail 2 to rotate is also provided on the slide bed plate 4. The fork rail 2 is placed on the slide bed plate 4. Under the action of the switch machine 5, the fork rail 2 can rotate within a small stroke range with the rotating shaft 22 as the axis. As the fork rail 2 rotates, the fork rail 2 is closely attached to the wing rail in the same direction as the open track, and is separated from the other wing rail, thereby eliminating the harmful space of the ordinary turnout.

[0035] The switch machine 5 includes a slide 52 disposed below the fork rail 2. The slide 52 is located 2.5 mm above the slide bed 4. One end of the slide 52 is rotatably connected to a pull rod 51. Clamps 53 are provided on both sides of the fork rail 2. The clamp 53 on the side away from the pull rod 51 is welded to the slide 52, and the clamp 53 on the side close to the pull rod 51 is mounted on the slide 52 via bolts and nuts 25. A double-coil spring is provided between the bolts and the clamp 53. When the pull rod 51 is pulled, the slide 52 moves with the traction of the pull rod 51. The slide 52 drives the clamp 53 to move, and at the same time, the clamp 53 drives the fork rail 2 to rotate. A stopper 54 abuts the side of the clamp 53 away from the fork rail 2. The stopper 54 is welded to the slide 52. The stopper 54 further reinforces the clamp 53, thereby improving the stability of the connection between the clamp 53 and the fork rail 2.

[0036] Reference Figure 1 and Figure 4 Rail supports 41 are provided on both sides of the fork rail 2. The rail supports 41 are installed on the slide bed 4 and are symmetrically arranged about the centerline of the rotation angle of the fork rail 2. The rail supports 41 are aligned with the waistline of the side wall of the fork rail 2. When one side of the fork rail 2 is the working surface for supporting the wheels, the other side is aligned with the rail supports 41, thereby reinforcing the fork rail 2 in the non-working state. The same applies when the fork rail 2 is rotated to the other side, thereby improving the stability of the fork rail 2.

[0037] The heel-end rail 3 also includes two steel rails 11 and is made of U75V online quenching rail. The connection structure of the heel-end rail 3 is the same as that of the toe-end rail 1 .

[0038] The implementation principle of the rotatable point rail frog in the embodiment of the present application is: by driving the pull rod 51 to move, the angle of the fork point rail 2 is adjusted, thereby removing the harmful space between the fork point rail 2 and the toe rail 1, thereby improving the overall stability and safety.

[0039] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A rotatable frog, characterized in that: The invention comprises a fork rail (2), a slide bed plate (4) is provided below the fork rail (2), a toe rail (1) is provided at one end of the fork rail (2), and a heel rail (3) is provided at the other end, a rotating shaft (22) is provided at one end of the fork rail (2) close to the heel rail (3), and is rotatably connected to the slide bed plate (4) via the rotating shaft (22), and a switch machine (5) for driving the fork rail (2) to rotate is also provided on the slide bed plate (4).

2. A rotatable frog according to claim 1, characterized in that: Rail supports (41) are provided on both sides of the fork rail (2), and the rail supports (41) are arranged on the slide bed plate (4). The rail supports (41) on both sides of the fork rail (2) are symmetrically arranged about the center line of the rotation angle of the fork rail (2).

3. The rotatable frog according to claim 1, characterized in that: A core hole (21) is provided on the fork center rail (2), the rotating shaft (22) is arranged in the core hole (21), a roller bearing (23) and a pressure bearing (24) are installed on the rotating shaft (22), the rotating shaft (22) is connected to the inner wall of the core hole (21) through the roller bearing (23), the rotating shaft (22) is further provided with a thread, and a spring washer (26) and a nut (25) are connected through the thread, and the nut (25) presses the spring washer (26) onto the pressure bearing (24).

4. A rotatable frog according to claim 3, characterized in that: An end cover (27) is provided at one end of the rotating shaft (22) away from the slide bed plate (4), and the end cover (27) blocks the core hole (21). Lubricating grease is also provided at one end of the core hole (21) close to the end cover (27).

5. The rotatable frog according to claim 1, characterized in that: The switch machine (5) includes a slide plate (52) arranged below the fork rail (2), one end of the slide plate (52) is rotatably connected to a pull rod (51), and gusset plates (53) are provided on both sides of the fork rail (2), wherein the gusset plate (53) on one side is welded to the slide plate (52), and the gusset plate (53) on the other side is installed on the slide plate (52) by means of bolts and nuts (25), and a double coil spring is provided between the bolts and the gusset plate (53).

6. The rotatable frog according to claim 5, characterized in that: A stopper (54) abuts against a side of the pinch plate (53) away from the fork rail (2), and the stopper (54) is welded to the slide plate (52).

7. The rotatable frog according to claim 1, characterized in that: The toe rail (1) comprises two steel rails (11), the lower ends of the steel rails (11) are provided with rail bottoms (12), and a 5 mm gap is provided between adjacent rail bottoms (12). A pad is further provided below the steel rails (11), and the steel rails (11) are connected to the pad via a type II spring clip fastener. A spacer block is further provided between the two steel rails (11), and the spacer block is connected to the steel rails (11) via bolts.

8. The rotatable frog according to claim 7, characterized in that: The structure of the heel rail (3) is the same as that of the toe rail (1), and a rubber gasket with a thickness of 5 mm is provided below the rail bottom (12), and a rubber gasket with a thickness of 10 mm is provided below the pad.

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