Tramway turnout with mosaic frog structure

Abstract

The present application relates to a kind of tramway switch for mosaic frog structure, comprising: integrally formed frog base, the frog base is provided with embedding groove at frog harmful space;The frog heart in the embedding groove, the frog heart with the frog base is detachably connected.The frog structure of the present application adopts the frog heart of mosaic, almost all frog damage replacement is because frog heart damage overrun, so when frog heart is damaged, only need to disassemble frog heart and replace frog heart directly, without damaging pavement, replacement is simple and convenient, solve the problem that the normal use of pavement is affected by the replacement frog of existing pavement damage and the problem of replacement is more inconvenient.

Description

Technical Field

[0001] The invention relates to the technical field of railway turnout design, in particular to an inlaid frog structure for a tramway turnout. Background Art

[0002] A turnout is a device that allows a train to switch from one set of tracks to another, thereby enabling the train to turn. A frog is a device that allows the wheels to cross from one rail to another, and is composed of a fork hub, wing rails, and connecting parts.

[0003] Currently, there are two types of frogs used in trams: high-manganese steel frogs and alloy steel frogs. High-manganese steel frogs offer advantages such as good crack ductility and low cost, but suffer from a low initial hardness. Alloy steel frogs, with their high initial hardness, are widely used on tram lines. However, since tram lines often utilize mixed right-of-way, both high-manganese steel and alloy steel frogs require road surface damage before replacement if they become damaged beyond the specified limit. This not only impacts the normal operation of road traffic but also places a significant workload on maintenance personnel. Therefore, it is necessary to develop a new type of frog that facilitates on-site maintenance. Summary of the Invention

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide an inlaid frog structure for tram switches, so as to solve the problem that the existing alloy steel frog needs to destroy the road surface when it is damaged and replaced, thus affecting the normal use of the road surface and being inconvenient to replace.

[0005] The technical solution to achieve the above purpose is:

[0006] The present invention provides a mosaic frog structure for a tramway switch, comprising:

[0007] An integrally formed frog base, wherein the frog base is provided with a caulking groove at the frog harmful space; and

[0008] A fork core is arranged in the embedding groove, and the fork core is detachably connected to the frog base.

[0009] The frog structure of the present invention adopts an inlaid fork core. Almost all frog damage and replacement are due to excessive damage to the fork core. In this way, when the fork core is damaged, it is only necessary to dismantle the fork core and directly replace it without damaging the road surface. The replacement is simple and convenient, which solves the problem of affecting the normal use of the road surface and the inconvenience of replacement caused by damaging the road surface when replacing the frog in the existing method.

[0010] A further improvement of the embedded frog structure for tramway switches of the present invention is that an assembly groove is provided on the frog base corresponding to the embedded groove;

[0011] The side of the fork core is provided with a corresponding press-fitting groove corresponding to the assembly groove;

[0012] The fork core is placed in the embedding groove and the assembly groove and the press-fitting groove are connected to each other. A pressing plate is pressed into the assembly groove and the press-fitting groove, and then a connecting bolt passes through the pressing plate and is connected to the frog base to achieve a detachable connection between the fork core and the frog base.

[0013] A further improvement of the embedded frog structure for tramway switches of the present invention is that the assembly grooves are provided on opposite sides of the embedded groove.

[0014] A further improvement of the inlaid frog structure for tram switches of the present invention is that a bolt hole is opened on the frog base corresponding to the bottom of the assembly groove, and a nut matched with the connecting bolt is provided at the bottom of the bolt hole.

[0015] A further improvement of the inlaid frog structure for tramway switches of the present invention is that a threaded connection hole is provided on the frog base corresponding to the bottom of the assembly groove.

[0016] A further improvement of the inlaid frog structure for a tramway switch of the present invention is that the shape of the pressing plate is adapted to the shape of the assembly groove and the press-fitting groove after they are connected.

[0017] A further improvement of the inlaid frog structure for a tramway switch of the present invention is that a stop washer is provided at the head of the connecting bolt.

[0018] A further improvement of the inlaid frog structure for tramway switches of the present invention is that there are multiple assembly grooves.

[0019] A further improvement of the inlaid frog structure for tramway switches of the present invention is that the fork core is an alloy steel structure.

[0020] A further improvement of the inlaid frog structure for tramway switches of the present invention is that the frog base is formed by casting high manganese steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The present invention is a schematic structural diagram of an inlaid frog structure for a tramway switch.

[0022] Figure 2 for Figure 1 Cross-sectional view at the center of the fork.

[0023] Figure 3 The present invention is a schematic structural diagram of a frog base in a mosaic frog structure for a tram switch.

[0024] Figure 4 for Figure 3Cross-sectional view of the center groove.

[0025] Figure 5 The present invention is a schematic structural diagram of a pressure plate and connecting bolts in a mosaic frog structure for a tramway switch.

[0026] Figure 6 The present invention is a schematic structural diagram of a fork core in a mosaic frog structure for a tramway switch. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0028] See Figure 1 The present invention provides an inlaid frog structure for tram switches, which is used to solve the problem that the existing alloy steel frogs need to destroy the road surface when replaced, thereby affecting the normal use of the road surface and the inconvenience of replacement. The frog structure of the present invention adopts an inlaid fork core. Since the damage to the frog is mostly due to damage to the fork core, when the fork core is damaged and needs to be replaced, it can be directly disassembled and replaced without destroying the road surface, and the replacement is simple and convenient. In addition, the fork core is made of alloy steel and has high wear resistance, which can increase the service life of the fork core and reduce the frequency of fork core replacement. The inlaid frog structure for tram switches of the present invention is described below with reference to the accompanying drawings.

[0029] See Figure 1 , shows a schematic structural diagram of the inlaid frog structure for a tram switch of the present invention. Figure 1 , the structure of the embedded frog structure for tramway switch of the present invention is described.

[0030] like Figure 1 As shown, the inlaid frog structure for tramway switches of the present invention comprises a frog base 21 and a fork core 22. The frog base 21 is an integrally formed structure. Figure 2 and Figure 3 As shown, the frog base 21 is provided with an embedding groove 221 at the frog harmful space, and the fork core 22 is provided in the embedding groove 221. The fork core 22 is detachably connected to the frog base 21.

[0031] The present invention detachably connects the fork core and the frog base, so that the fork core can be directly disassembled and replaced when damaged without replacing the entire frog structure. The frog base is partially buried in the road surface, and replacing the fork core will not have any impact on the road surface, does not require damaging the road surface, and is simple and convenient.

[0032] In a specific embodiment of the present invention, Figure 3As shown, the frog base 21 of the present invention includes two wing rails 214. The wing rails 214 are integrally formed. The middle portion of the two wing rails 214 is the location where the train changes track, which is the frog's harmful space. A caulking groove 221 is provided in this frog's harmful space. The caulking groove 221 is recessed downward from the upper surface of the frog base 21. The frog's harmful space in the middle of the wing rails 214 is subject to the greatest wear. In practice, frog damage typically occurs at this cross-connection, requiring replacement. The caulking groove 221 is provided in the frog's harmful space, allowing the fork core 22 to be positioned within the caulking groove, placing the fork core in the location where wear is greatest. When the fork core is damaged and needs replacement, the fork core can be directly replaced.

[0033] In a specific embodiment of the present invention, Figure 3 and Figure 4 As shown, the frog base 21 is provided with an assembly groove 212 corresponding to the embedding groove 211, and the assembly groove 212 is connected to the embedding groove 211; Figure 2 and Figure 6 As shown, a corresponding press-fitting groove 221 is provided on the side of the fork core 22 corresponding to the assembly groove 212; the fork core 22 is placed in the embedding groove 211 and the assembly groove 212 and the press-fitting groove 221 are connected to each other. A pressure plate 23 is pressed into the assembly groove 212 and the press-fitting groove 221, and then a connecting bolt 24 passes through the pressure plate 23 and is connected to the frog base 21, thereby realizing a detachable connection between the fork core 22 and the frog base 21.

[0034] The pressing plate 23 is connected to the frog base 21 by connecting bolts 24 . The pressing plate 23 presses the fork core 22 , thereby fixing the fork core 22 on the frog base 21 .

[0035] When the fork core 22 needs to be replaced, the connecting bolt 24 is removed, and then the pressing plate 23 is taken out, and the fork core 22 can be taken out from the embedding groove 211 and replaced with a new fork core 22.

[0036] Preferably, if Figure 3 and Figure 4 As shown, the cross section of the assembly groove 212 is square, and the assembly groove 212 has a top opening and a side opening, and the side opening is connected to the embedding groove 211.

[0037] Combine Figure 6 As shown, the side of the fork core 22 is partially recessed inward to form a press-fitting groove 221. The press-fitting groove 221 also has a top opening and a side opening. When the fork core 22 is embedded in the embedding groove 211, the side opening of the press-fitting groove 221 is arranged opposite to the side opening of the assembly groove 212, and the assembly groove 212 and the press-fitting groove 221 are connected to each other.

[0038] like Figure 5As shown, the outer contour of the pressure plate 23 is square and the end face is U-shaped. A through hole is opened on the pressure plate 23 corresponding to the connecting bolt 24, and an accommodating groove is provided on the top of the pressure plate 23 corresponding to the head of the connecting bolt 24 to accommodate the head of the connecting bolt 24.

[0039] In a specific embodiment of the present invention, Figure 3 As shown, the assembly grooves 212 are provided on opposite sides of the embedding groove 211. Figure 6 As shown, the press-fitting grooves 221 are also provided on opposite sides of the fork core 22. Both sides of the fork core 22 are pressed tightly into the embedding grooves by the pressing plate, thereby achieving the fixation of the fork core.

[0040] Furthermore, there are a plurality of assembly grooves 212. Preferably, two assembly grooves 212 are provided on each side of the embedding groove 211. The number of the press-fitting grooves 221 corresponds to the number of the assembly grooves.

[0041] In a specific embodiment of the present invention, Figure 2 and Figure 3 As shown, a bolt hole 213 is provided at the bottom of the corresponding assembly groove 212 on the frog base 21, and a nut adapted to the connecting bolt 24 is provided at the bottom of the bolt hole 213. The connecting bolt 24 is threadedly connected with the nut after passing through the pressure plate 23 and the bolt hole 213. The connecting bolt 24 is tightened to complete the installation of the fork core.

[0042] In a specific embodiment of the present invention, a threaded connection hole is formed on the frog base 21 at the bottom of the corresponding assembly groove 212. The connection bolt 24 can be threadedly connected to the threaded connection hole after passing through the pressure plate 23.

[0043] In a specific embodiment of the present invention, the shape of the pressing plate 23 is adapted to the shape of the assembly groove 212 and the press-fitting groove 213 after they are connected.

[0044] In a specific embodiment of the present invention, Figure 2 As shown, a locking washer 25 is placed at the head of the connecting bolt 24. This locking washer 25 is placed between the head of the connecting bolt 24 and the pressure plate 23. The locking washer 25 is used to prevent the connecting bolt from loosening. The locking washer 25 can be a single-ear locking washer or a double-ear locking washer. Alternatively, a steel wire or spring washer can be used to prevent the connecting bolt from loosening.

[0045] In a specific embodiment of the present invention, the fork core 22 is made of alloy steel. Alloy steel has high wear resistance, which can ensure the wear resistance of the fork core and increase the service life of the fork core.

[0046] In a specific embodiment of the present invention, the frog base 21 is formed by casting high manganese steel. Casting the frog base with high manganese steel can shorten the production cycle, reduce the amount of alloy steel used in the fork core, and reduce the impact of the procurement cycle of alloy steel billets or steel plates.

[0047] The manufacturing process of high manganese steel frog base is: first make a model, cast the blank, and then process it.

[0048] The alloy steel fork core is made of alloy steel billet or wear-resistant steel plate.

[0049] The beneficial effects of the inlaid frog structure for tramway switches of the present invention are as follows:

[0050] The alloy steel fork core is embedded in the high manganese steel frog base, which can avoid damaging the road surface to replace the fork core. The alloy steel fork core has high wear resistance and is not easy to damage, which can reduce the number of fork core replacements. The alloy steel fork core uses less alloy steel, which can reduce the impact of the procurement cycle of alloy steel billets or steel plates. The high manganese steel cast frog base can shorten the production cycle.

[0051] The present invention has been described in detail above with reference to the embodiments of the accompanying drawings. A person skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention. The scope of protection of the present invention shall be determined by the scope defined in the appended claims.

Claims

1. A mosaic frog structure for a tramway switch, characterized in that: include: An integrally formed frog base, wherein the frog base is provided with an embedding groove at the frog harmful space; as well as a fork core disposed in the embedding groove, wherein the fork core is detachably connected to the frog base; The frog base is provided with an assembly groove corresponding to the embedding groove; The side of the fork core is provided with a corresponding press-fitting groove corresponding to the assembly groove; The fork core is placed in the embedding groove, and the assembly groove and the press-fitting groove are connected to each other. A pressing plate is pressed into the assembly groove and the press-fitting groove, and then a connecting bolt passes through the pressing plate and is connected to the frog base to achieve a detachable connection between the fork core and the frog base; The assembly grooves are provided on opposite sides of the embedding groove; the cross section of the assembly groove is square, and the assembly groove has a top opening and a side opening, and the side opening is connected to the embedding groove; The side of the fork core is partially recessed inward to form a press-fitting groove, the press-fitting groove having a top opening and a side opening. When the fork core is embedded in the embedding groove, the side opening of the press-fitting groove is arranged opposite to the side opening of the assembly groove. The outer contour of the pressing plate is square, the end face is U-shaped, and through holes are opened on the pressing plate corresponding to the connecting bolts; The top of the pressure plate is provided with a receiving groove corresponding to the head of the connecting bolt to accommodate the head of the connecting bolt; The shape of the pressing plate is adapted to the shape of the assembly groove and the press-fitting groove after docking; A locking washer is provided at the head of the connecting bolt.

2. The embedded frog structure for a tramway switch according to claim 1, wherein: A bolt hole is provided on the frog base corresponding to the bottom of the assembly groove, and a nut matched with the connecting bolt is provided at the bottom of the bolt hole.

3. The embedded frog structure for a tramway switch according to claim 1, wherein: A threaded connection hole is provided on the frog base corresponding to the bottom of the assembly groove.

4. The embedded frog structure for a tramway switch according to claim 1, wherein: There are multiple assembly grooves.

5. The embedded frog structure for a tramway switch according to claim 1, wherein: The fork core is made of alloy steel structure.

6. The embedded frog structure for a tramway switch according to claim 1, wherein: The frog base is formed by casting high manganese steel.

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