Modularized frog reinforcing and connecting structure and connecting method

Abstract

The invention belongs to the technical field of rails, particularly relates to a modularized reinforcing and connecting structure for a frog and a connecting method, and provides the following scheme aiming at the problems that the external position of a harmful space of an existing frog is basically intact, particularly under the working condition of a heavy haul railway, the frog is frequently replaced, a large amount of skylight point time is occupied, and the maintenance and repair workload is increased. The frog comprises a frog body and an inlaid core, a matching groove is formed in the top end of the frog body, a convex matching block is arranged at the bottom end of the embedded core, the convex matching block and the matching groove are used in a matched mode, and the embedded core is embedded into the frog body; the wedge-shaped clamping plate is arranged between the frog body and the inlaid core and is used for fastening and connecting the frog body and the inlaid core; the clamping plate is designed to have the overall dimension matched with the frog, the wedge-shaped gap capable of stabilizing the frog body and the inlaid core is designed, and the stability of the assembled frog can be better improved.

Description

Technical Field

[0001] The invention relates to the technical field of railroads, and in particular to a modular frog reinforcement connection structure and a connection method. Background Art

[0002] With the development of the national economy, the railway transportation volume has increased rapidly, and the train transportation has developed towards intensive, heavy-axle and high-speed development to meet the growing demand for passenger and freight transportation. According to relevant railway regulations, fixed-type frogs are generally used on lines with a speed of 160km / h and below. Under the conditions of large-volume, heavy-axle and high-speed operation, the fixed-type frogs inevitably have gauge interruptions in the "harmful space", and the use conditions are deteriorating, and the maintenance and repair workload is increasing. Fixed-type frogs are divided into five types according to the structural type: high-manganese steel integral cast frogs, high-manganese steel (forged high-manganese steel) combined frogs, welded wing-rail alloy steel combined frogs, inlaid wing-rail alloy steel combined frogs, and ordinary alloy steel combined frogs.

[0003] The "harmful space" of the frog is an integrated structure with other areas. The wear of the harmful space to the limit or serious damage is the main reason for the lower limit of the fixed frog. The outer position of the "harmful space" of the lower limit frog is basically intact, especially under heavy-load railway conditions. The frog is replaced frequently, which takes up a lot of "window time", increases the workload of maintenance and repair, and restricts the rapid development of railways.

[0004] In view of the above problems, the present invention document proposes a modular frog reinforcement connection structure and connection method. Summary of the invention

[0005] The present invention provides a modular reinforced connection structure and connection method for frogs, which solves the disadvantages of the prior art that the external position of the "harmful space" of the frog is basically intact, especially under heavy-load railway conditions, the frogs are frequently replaced, a large amount of "window time" is occupied, and the maintenance and repair workload is increased.

[0006] The present invention provides the following technical solutions:

[0007] A modular frog reinforcement connection structure, comprising:

[0008] frog body and insert core;

[0009] The top of the frog body is provided with a matching groove, the bottom of the core insert is provided with a convex matching block, the convex matching block and the matching groove are matched for use, and the core insert is embedded in the frog body;

[0010] A wedge-shaped clamping plate, the wedge-shaped clamping plate is arranged between the frog body and the insert core for fastening the frog body and the insert core, the wedge-shaped clamping plate comprises a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate are respectively located on both sides of the frog body and the insert core, the first clamping plate and the second clamping plate are both provided with a connecting hole, the two connecting holes are both provided with an outer T-bolt pair, both ends of the frog body are provided with matching threaded holes, the two outer T-bolt pairs are respectively threadedly connected to the two matching threaded holes;

[0011] A waist gap is provided in the middle of both ends of the frog body, and a first protrusion and a second protrusion are provided at the adjacent ends of the first clamping plate and the second clamping plate, and the two first protrusions are respectively inserted into the two waist gaps, and the matching surface size of the waist gap and the first protrusion is 5-200mm, the length of the two waist gaps is 30-300mm, and the width of the two waist gaps is 10-150mm.

[0012] In a possible design, both sides of the top end of the core inlay are formed with engaging grooves, and the two second protrusions are matched with the two engaging grooves respectively.

[0013] In a possible design, two wedge-shaped gaps are formed between the two first protrusions and the two second protrusions respectively, and the two wedge-shaped gaps are used to engage and fix the frog body and the core insert.

[0014] In a possible design, the wedge-shaped gap is in contact with the surface of the frog body.

[0015] In a possible design, the ends of the first clamping plate and the second clamping plate that are away from each other are both provided with a bolt anti-rotation mechanism.

[0016] In a possible design, each set of the threaded anti-rotation mechanisms includes a washer, which is located between the wedge-shaped clamp and the outer T-bolt pair.

[0017] In a possible design, the core insert is made of forged high manganese steel or alloy steel, and the frog body is made of cast high manganese steel.

[0018] A method for connecting a modular frog reinforced connection structure comprises the following steps:

[0019] S1. Place the core insert on the upper side of the frog body, align the convex matching block at the bottom of the core insert with the matching groove on the frog body and insert it, so that the core insert and the frog body are tightly connected together like a concave-convex fit, and the receiving surface of the frog body and the core insert fits tightly;

[0020] S2. Place the first clamping plate and the second clamping plate on the left and right sides of the frog body and the core insert respectively, so that the two second protrusions are both arranged in the bite groove, and the two first protrusions are both arranged in the waist gap, so that the frog body and the core insert are confined in the wedge-shaped gap between the first clamping plate and the second clamping plate.

[0021] It is to be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the invention.

[0022] In the present invention, during the use and maintenance process of the user, the cost of labor and materials for replacing a set of traditional frogs is about 50,000 to 100,000 yuan. Since only the core insert components are replaced, the frog of the present application costs about 20,000 yuan, and the use cost is reduced by 60%. If the wedge-shaped clamping block, clamping plate, pressure block and high-strength bolt pair are used to fasten the core insert and the frog body, the frog is stable and safe, so it has a high market promotion value;

[0023] In the present invention, the clamping plate is designed with the outer dimensions matching the frog, a bolt anti-rotation mechanism is designed, and a "wedge-shaped gap" is designed to stabilize the frog body and the inlay core, which can better increase the stability of the frog after assembly;

[0024] In the present invention, through the reinforcement effect of the clamping plate, the load can be effectively transferred from the working edge to the core insert, then from the core insert to the frog body, and finally to the pad and the railway foundation, effectively improving the service life of the frog;

[0025] In the present invention, the clamping plate connection method is used to improve the matching accuracy between the core insert and the frog body, avoid lateral displacement of the core insert, and is suitable for lines with relatively severe operating conditions such as heavy loads or vehicle speeds not less than . BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A frog cross-sectional view of a modular frog reinforcement connection structure provided by an embodiment of the present invention;

[0027] Figure 2 A frog side view of a modular frog reinforcement connection structure provided by an embodiment of the present invention;

[0028] Figure 3 A frog top view of a modular frog reinforcement connection structure provided by an embodiment of the present invention;

[0029] Figure 4 A schematic diagram of a modular frog reinforcement connection structure provided by an embodiment of the present invention;

[0030] Figure 5 A schematic diagram of two clamping blocks in a modular frog reinforcement connection structure provided by an embodiment of the present invention;

[0031] Figure 6 A top view of a core insert in a modular frog reinforcement connection structure provided by an embodiment of the present invention;

[0032] Figure 7 A cross-sectional view of a core insert in a modular frog reinforcement connection structure provided by an embodiment of the present invention;

[0033] Figure 8 A schematic diagram of a first frog body of a modular frog reinforcement connection structure provided by an embodiment of the present invention;

[0034] Fig. 9 A schematic diagram of a second frog body of a modular frog reinforcement connection structure provided by an embodiment of the present invention;

[0035] Fig.10 A top view of a clamping plate, a frog body and a core insert in a modular frog reinforcement connection structure provided by an embodiment of the present invention;

[0036] Fig.11 A side view of a clamping plate, a frog body and a core insert in a modular frog reinforcement connection structure provided by an embodiment of the present invention;

[0037] Fig.12 A top view of a connection part in a modular frog reinforcement connection structure provided by an embodiment of the present invention;

[0038] Fig.13 The present invention is a side view of a connection part of a modular frog reinforcement connection structure provided by an embodiment of the present invention.

[0039] Reference numerals:

[0040] 1. frog body; 2. core insert; 3. wedge-shaped clamp; 31. first clamp; 32. second clamp; 4. outer T-bolt pair; 6. wing rail; 7. fork follower rail; 8. bridge pad; 9. ordinary pad; 10. matching threaded hole. DETAILED DESCRIPTION

[0041] The embodiments of the present invention are described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0042] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms, "connection" and "installation" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, "connection" can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed" means that they are connected to each other and the relative position relationship after connection remains unchanged. The directional terms mentioned in the embodiments of the present invention, such as "inside", "outside", "top", "bottom", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0043] In the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0044] In the embodiments of the present invention, "and / or" is only a description of the association relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0045] References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present invention. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. appearing in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0046] Example 1

[0047] Reference Figure 1-Figure 12 A modular frog reinforcement connection structure, the frog mainly comprises a frog body 1, a core insert 2, a wedge-shaped clamping plate 3 and an outer T-bolt pair 4, the frog body 1 and the core insert 2 are arranged on a wing rail 6 and a fork heel rail 7;

[0048] A matching groove is provided at the top of the frog body 1, and a convex matching block is provided at the bottom of the core insert 2. The convex matching block and the matching groove are matched for use, and the core insert 2 is embedded in the frog body 1, and the matching type is concave-convex matching;

[0049] A frog body 1, a core insert 2, a wedge-shaped clamping plate 3 and an outer T-bolt pair 4 are connected to form a fixed frog;

[0050] A wedge-shaped clamping plate 3 is provided between the frog body 1 and the core insert 2 for fastening the frog body 1 and the core insert 2. The wedge-shaped clamping plate 3 includes a first clamping plate 31 and a second clamping plate 32. The first clamping plate 31 and the second clamping plate 32 are respectively located on both sides of the frog body 1 and the core insert 2. A connecting hole is provided in each of the first clamping plate 31 and the second clamping plate 32. Both connecting holes are provided with an outer T-bolt pair 4. Matching threaded holes 10 are provided at both ends of the frog body 1. The two outer T-bolt pairs 4 are respectively threadedly connected to the two matching threaded holes 10.

[0051] A waist gap is provided in the middle of both ends of the frog body 1, and a first protrusion and a second protrusion are provided at the adjacent ends of the first clamping plate 31 and the second clamping plate 32. The two first protrusions are respectively inserted into the two waist gaps, and the matching surface size of the waist gap and the first protrusion is 5-200mm, the length of the two waist gaps is 30-300mm, and the width of the two waist gaps is 10-150mm.

[0052] Both sides of the top of the core insert 2 are formed with bite grooves, and the two second protrusions match the two bite grooves respectively; the gaps reserved on both sides of the frog body 1 and the core insert 2 can be used in conjunction with the first clamping plate 31 and the second clamping plate 32 to ensure that the frog body 1 and the core insert 2 can be efficiently installed;

[0053] The wheel load can be vertically transmitted from the core insert 2 to the frog body 1, and the frog body 1 transmits the load to the bridge pad 8 and the common pad 9. By disassembling or tightening the first clamping plate 31 and the second clamping plate 32, the frog body 1 and the core insert 2 can be repeatedly disassembled and assembled, and the core insert 2 can be quickly replaced online and offline.

[0054] Two wedge-shaped gaps are formed between the two first protrusions and the two second protrusions respectively, and the two wedge-shaped gaps are used to bite and fix the frog body 1 and the core insert 2;

[0055] The wedge-shaped gap fits with the surface of the frog body 1; the two wedge-shaped gaps fit with the side ends of the frog body 1 and the insert core 2, which can reduce the gap and stabilize the frog body and the insert core;

[0056] The ends of the first clamping plate 31 and the second clamping plate 32 that are away from each other are both provided with bolt anti-rotation mechanisms.

[0057] Each set of thread anti-rotation mechanisms includes a gasket, which is located between the wedge-shaped clamping plate 3 and the outer T-bolt pair 4.

[0058] like Fig.11 and Fig.12 As shown, Fig.11 and Fig.12 It is the weak part of the connection between the frog body 1 and the core insert 2. Sections GG and EE respectively show the connection relationship between the wedge-shaped clamping plate 3, the core insert 2, and the frog body 1;

[0059] like Figure 8 The dimension e in the figure is the size of the mating surface between the wedge-shaped clamping plate 3 and the frog body 1. The linear contact dimension of the mating surface is about 5-200 mm, which effectively engages the frog body 1. Fig.12 The weak parts shown on the left have been reinforced, such as Fig.12 The middle dimension c and dimension d are the dimensions of the waist gap in the frog body 1, the dimension c is about 10-150 mm, and the dimension d is about 30-300 mm;

[0060] Through the reinforcement of the wedge-shaped clamping plate 3, the load can be effectively transferred from the working side to the core insert 2, then from the core insert 2 to the frog body 1, and finally to the bridge pad 8, the ordinary pad 9 and the railway foundation, effectively improving the service life of the frog;

[0061] Compared with the traditional combined frog structure, the frog body in the device is the frog body 1 and the insert core 2, and other parts are relatively few, which solves the problem that the frog has harmful space locally and cannot be replaced online.

[0062] Example 2

[0063] Reference Fig. 9 , dimension a in the figure is the contraction of the waistline of the vertical wall of the frog body, which cooperates with the inlay dovetail angle of the inlay core 2 in the figure to achieve a uniform transition of the train wheel load, reduce the impact of the inlay core 2 and the frog body 1 due to the front and rear fitting gap on the wheel, greatly reduce the impact load of the train wheel on the top surface of the rail, and reduce noise.

[0064] The wedge-shaped gap of the wedge-shaped clamping plate 3 forms a bite relationship between the frog body 1 and the core insert 2, making the assembly of the two more stable and greatly improving the safety factor of the modular frog.

[0065] The wedge-shaped clamping plate 3 is used to improve the matching accuracy between the frog body 1 and the core insert 2, and avoid lateral displacement of the core insert 2. It is suitable for heavy-loaded lines or lines with a speed not less than that of the lines with relatively severe operating conditions.

[0066] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention; the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A modular frog reinforcement connection structure, characterized in that: include: A frog body (1) and a core insert (2); The top end of the frog body (1) is provided with a matching groove, the bottom end of the core insert (2) is provided with a convex matching block, the convex matching block and the matching groove are matched for use, and the core insert (2) is embedded in the frog body (1); A wedge-shaped clamping plate (3), the wedge-shaped clamping plate (3) being arranged between a frog body (1) and an insert core (2) for fastening the frog body (1) and the insert core (2), the wedge-shaped clamping plate (3) comprising a first clamping plate (31) and a second clamping plate (32), the first clamping plate (31) and the second clamping plate (32) being respectively arranged on both sides of the frog body (1) and the insert core (2), the first clamping plate (31) and the second clamping plate (32) being both provided with a connecting hole, the two connecting holes being both provided with an outer T-bolt pair (4), the two ends of the frog body (1) being both provided with matching threaded holes (10), the two outer T-bolt pairs (4) being respectively threadedly connected to the two matching threaded holes (10); A waist gap is provided in the middle of both ends of the frog body (1), and a first protrusion and a second protrusion are provided at the adjacent ends of the first clamping plate (31) and the second clamping plate (32), and the two first protrusions are respectively inserted into the two waist gaps, and the matching surface size of the waist gap and the first protrusion is 5-200mm, the length of the two waist gaps is 30-300mm, and the width of the two waist gaps is 10-150mm.

2. A modular frog reinforcement connection structure according to claim 1, characterized in that: Both sides of the top end of the core insert (2) are formed with engaging grooves, and the two second protrusions are matched with the two engaging grooves respectively.

3. A modular frog reinforcement connection structure according to claim 2, characterized in that: Two wedge-shaped gaps are formed between the two first protrusions and the two second protrusions respectively, and the two wedge-shaped gaps are used to engage and fix the frog body (1) and the core insert (2).

4. A modular frog reinforcement connection structure according to claim 3, characterized in that: The wedge-shaped gap is in contact with the surface of the frog body (1).

5. A modular frog reinforcement connection structure according to claim 3, characterized in that: The ends of the first clamping plate (31) and the second clamping plate (32) which are away from each other are both provided with a bolt anti-rotation mechanism.

6. A modular frog reinforcement connection structure according to claim 5, characterized in that: Each set of the threaded anti-rotation mechanisms comprises a gasket, which is located between the wedge-shaped clamping plate (3) and the outer T-bolt pair (4).

7. A modular frog reinforcement connection structure according to claim 1, characterized in that: The core insert (2) is made of forged high manganese steel or alloy steel, and the frog body (1) is made of cast high manganese steel.

8. A method for connecting a modular frog reinforcement connection structure according to any one of claims 1 to 7, characterized in that: The steps include: S1, placing the core insert (2) on the upper side of the frog body (1), aligning the convex matching block at the bottom of the core insert (2) with the matching groove on the frog body (1) and inserting it, the core insert (2) and the frog body (1) are tightly connected together like a concave-convex fit, and the receiving surfaces of the frog body (1) and the core insert (2) are tightly fitted; S2. The first clamping plate (31) and the second clamping plate (32) are respectively placed on the left and right sides of the frog body (1) and the core insert (2), so that the two second protrusions are both arranged in the bite groove, and the two first protrusions are both arranged in the waist gap, so that the frog body (1) and the core insert (2) are confined in the wedge-shaped gap between the first clamping plate (31) and the second clamping plate (32).

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