Railway freight axle box body and bogie

Abstract

The utility model provides a railway freight axle box body and a bogie, a rotating shaft is installed in the axle box body through a bearing, the axle box body is connected with a frame body through a guide frame seat and a suspension damping mechanism, a bearing crane is further arranged on the axle box body, and a wheel axle pair and the frame body are directly provided with a brake mechanism. The reinforcing ribs are additionally arranged in the four main stress concentration key areas of the axle box body, partial stress of the four stress concentration key areas is relieved, the bearing face of the lower framework of the special tool at the top is of a round structure, and casting forming demolding is facilitated. The drainage groove is in a left-right mirror symmetry mode, rainwater accumulated in the reinforcing ring can be drained in the using process, the reinforcing groove and four front and back reinforcing plates are arranged at the bottom of the axle box body, the reinforcing plates are located below the key position of the drainage groove, the reinforcing effect is achieved structurally, the overall weight is reduced, and the service life of the axle box is prolonged. The structure provided by the utility model has the advantages of light weight, good universality and good strength.

Description

Technical Field

[0001] The utility model relates to the technical field of railways, in particular to a railway freight axle box and a bogie. Background Art

[0002] As the most mainstream 25t axle load freight bogie in Europe and even the world, the Y25 series bogie is a railway freight car bogie with an integral welded frame and primary suspension. It has the characteristics of light weight and good flexibility, and is recognized by the International Union of Railways (UIC) as the standard freight car bogie for European railways. The axle box is one of the extremely important components as the primary suspension of this type of bogie.

[0003] In order to ensure sufficient safety performance of the axle box, the existing axle box body is often designed to be heavy to achieve special working condition strength, and some structural designs are not conducive to casting. Utility Model Content

[0004] The utility model aims to provide a railway freight axle box and a bogie, which have the advantages of light weight and good strength.

[0005] In order to achieve the above-mentioned purpose, the utility model proposes the following technical solution: a railway freight axle box, used for a freight bogie, comprising a box (2), the box (2) being provided with a mounting hole (201), connected to an axle and a bearing through the mounting hole (201), the box (2) having support plates (202) on both sides, the support plates (202) being used to place a suspension damping mechanism (3), the support plates (202) being provided with a drainage groove (203);

[0006] Both sides of the box body (2) are provided with a first wear plate (205); a second wear plate (204) is arranged between the two first wear plates (205); the second wear plate (204) is fixedly connected to the box body (2); three reinforcing ribs (206) are arranged between the second wear plate (204) and the support plate (202); the reinforcing ribs (206) are fixedly connected to the box body (2); and the reinforcing ribs (206) are used to relieve part of the stress in four key stress concentration areas;

[0007] A bearing plate (207) is fixedly connected to the top of the box body (2);

[0008] Reinforcement grooves (208) are provided on both sides of the bottom of the box body (2), and four reinforcement plates (209) are fixedly connected in the reinforcement grooves (208).

[0009] Furthermore, in the present invention, the axle box body as a whole has a bilaterally symmetrical structure.

[0010] Furthermore, in the present invention, the first wear plate (205) and the second wear plate (204) are high manganese wear-resistant plates.

[0011] Furthermore, in the present invention, the positions of the shaft box mounting hole (201), the support plate (202), the second wear plate (204), and the first wear plate (205) are consistent with those of the existing Y25 shaft box, and can be replaced.

[0012] A bogie comprises the above-mentioned railway freight axle box, and also comprises a wheel axle pair (1) and a frame body (4), wherein the wheel axle pair (1) comprises wheels and a rotating shaft, wherein the rotating shaft is installed in the axle box body (2) via a bearing, wherein the axle box body (2) is connected to the frame body (4) via a guide frame seat (7) and a suspension damping mechanism (3), wherein a load-bearing hanger (5) is also provided on the axle box body (2), and a braking mechanism (6) is directly provided on the wheel axle pair (1) and the frame body (4).

[0013] Beneficial effects: The technical solution of the present application has the following technical effects: the present invention adds reinforcing ribs (206) to the four main stress concentration key areas of the axle box body, thereby relieving some stress in the four stress concentration key areas. The bearing surface of the lower frame of the top special tooling adopts a "circular" structure, which plays a guiding role when the upper and lower cavities are demolded, which is conducive to casting and molding demolding. The mirror symmetry of the drainage groove can allow the rainwater accumulated inside the reinforcement ring to be discharged during use. A reinforcement groove and four reinforcement plates at the front and rear are set at the bottom of the axle box body. The reinforcement plate is located below the key position of the drainage groove. It connects the upper and lower parts of the structure, plays a reinforcing role, reduces the number of reinforcing ribs, and reduces the overall weight. The structure of the present invention has the advantages of light weight, good versatility, and good strength.

[0014] Universality: The inner hole of the axle box, the position of the spring seat, the position of the wear plate and the overall limit of the axle box body can be interchanged with the existing Y25 axle box body, with good universality.

[0015] It should be appreciated that all combinations of the foregoing concepts, as well as additional concepts described in greater detail below, may be considered part of the inventive subject matter of the present disclosure, provided such concepts are not mutually inconsistent.

[0016] The foregoing and other aspects, embodiments and features of the present invention can be more fully understood from the following description in conjunction with the accompanying drawings. Other additional aspects of the present invention, such as the features and / or beneficial effects of the exemplary embodiments, will be apparent from the following description or learned from the practice of the specific embodiments according to the teachings of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are not intended to be drawn to scale. In the accompanying drawings, each identical or nearly identical component shown in various figures may be represented by the same reference numeral. For the sake of clarity, not every component is labeled in each figure. Now, embodiments of various aspects of the utility model will be described by way of example and with reference to the accompanying drawings, in which:

[0018] Figure 1 It is a schematic diagram of the structure of the bogie of the utility model.

[0019] Figure 2 It is a top view schematic diagram of the bogie of the utility model.

[0020] Figure 3 It is a structural schematic diagram of the axle box body of the utility model.

[0021] Figure 4 It is a structural schematic diagram of the axle box body of the utility model.

[0022] Figure 5 It is a structural schematic diagram of the axle box body of the utility model.

[0023] Figure 6 It is a structural schematic diagram of the axle box body of the utility model.

[0024] Figure 7 It is a structural schematic diagram of the axle box body of the utility model.

[0025] Figure 8 It is a structural schematic diagram of the frame of the utility model.

[0026] Fig. 9 It is a structural schematic diagram of the guide frame seat of the utility model.

[0027] Fig.10 This is the stress diagram of the axle box of the utility model under the abnormal load condition.

[0028] Fig.11 This is the Goodman curve diagram of the axle box body of the utility model.

[0029] In the figure, the meaning of each figure mark is as follows: 1. wheel axle pair; 2. box body; 3. suspension shock absorbing mechanism; 4. frame body; 5. load-bearing crane; 6. braking mechanism; 7. guide frame seat; 201. mounting hole; 202. support plate; 203. drainage groove; 204. second wear plate; 205. first wear plate; 206. reinforcement rib; 207. load-bearing plate; 208. reinforcement groove; 209. reinforcement plate. DETAILED DESCRIPTION

[0030] In order to better understand the technical content of the utility model, specific embodiments are cited and described as follows in conjunction with the accompanying drawings. In this disclosure, various aspects of the utility model are described with reference to the accompanying drawings, and many illustrative embodiments are shown in the accompanying drawings. The embodiments of the present disclosure are not necessarily defined to include all aspects of the utility model. It should be understood that the various concepts and embodiments introduced above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in the utility model are not limited to any implementation method. In addition, some aspects disclosed in the utility model can be used alone, or used in any appropriate combination with other aspects disclosed in the utility model. Example

[0031] like Figure 3-7 A railway freight axle box body is used for a freight bogie and is a thin-walled part. The axle box body has a bilaterally symmetrical structure as a whole and includes a box body 2. The material of the axle box body is GJS-400-18-LT-EN1563.

[0032] In the specific structure, a mounting hole 201 is provided on the box body 2, and the mounting hole 201 is used to connect the vehicle shaft and the bearing. Support plates 202 are provided on both sides of the box body 2, and the support plates 202 are used to place the suspension shock absorbing mechanism 3. A drainage groove 203 is provided on the support plates 202;

[0033] There are two first wear plates 205 on both sides of the box body 2. A second wear plate 204 is fixedly connected between the two first wear plates 205. The second wear plate 204 is fixedly connected to the box body 2. The first wear plate 205 and the second wear plate 204 are high manganese wear-resistant plates.

[0034] Three reinforcing ribs 206 are arranged between the second wear plate 204 and the support plate 202. The reinforcing ribs 206 are fixedly connected to the box body 2. The reinforcing ribs 206 are used to relieve some stress in the four key stress concentration areas. Figure 7 The key stress concentration areas of the axle box are shown; the overall strength is increased, such as Fig.10 As shown, under abnormal operating conditions, the maximum stress is less than the yield strength of the material (GJS-400-18-LT-EN1563), the yield strength of which is 240 MPa. The maximum stress at the transition point on the side of the axle box is 189.3 MPa, which is less than the yield strength of the material. The calculation results show that the static strength and fatigue strength of the axle box meet the requirements of UIC510-3 and BS EN 13749, and can meet the operating conditions.

[0035] The top of the box body 2 is fixedly connected with a bearing plate 207, and the bearing surface of the bearing plate 207 adopts a "circular" structure, which is conducive to demoulding of casting molding;

[0036] Both sides of the bottom of the box 2 are provided with reinforcement grooves 208, and four reinforcement plates 209 are fixedly connected in the reinforcement grooves 208. The purpose of light weight and good strength can be achieved by setting the reinforcement grooves 208 and the four reinforcement plates 209. According to the test, under the main operating conditions, the maximum stress at the transition of the side of the axle box and the stress value of the bearing plate 207 are within the range of the GOODMAN curve (Goodman curve), so the fatigue strength meets the requirements, such as Fig.11 .

[0037] In this embodiment, the positions of the shaft box mounting hole 201, the support plate 202, the second wear plate 204, and the first wear plate 205 are consistent with the dimensions of the existing Y25 shaft box and can be replaced. Example

[0038] like Figure 1 , 2 , 8 and 9, this embodiment provides a bogie, including a railway freight axle box body of embodiment 1, and also including a wheel axle pair 1 and a frame body 4, the wheel axle pair 1 includes a wheel and a rotating shaft, the rotating shaft is installed in the axle box body 2 through a bearing, the axle box body 2 is connected to the frame body 4 through a guide frame seat 7 and a suspension shock absorbing mechanism 3, and a load-bearing hanger 5 is also arranged on the axle box body 2, and a braking mechanism 6 is directly arranged on the wheel axle pair 1 and the frame body 4.

[0039] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. A person with ordinary knowledge in the technical field to which the present invention belongs may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the definition of the claims.

Claims

1. A railway freight axle box, used for a freight bogie, characterized in that: The box body (2) comprises a housing (2), a mounting hole (201) is provided on the housing (2), and is connected to the axle and the bearing via the mounting hole (201); both sides of the housing (2) have support plates (202), the support plates (202) are used to place the suspension shock absorbing mechanism (3), and the support plates (202) are provided with a drainage groove (203); Both sides of the box body (2) are provided with a first wear plate (205); a second wear plate (204) is arranged between the two first wear plates (205); the second wear plate (204) is fixedly connected to the box body (2); three reinforcing ribs (206) are arranged between the second wear plate (204) and the support plate (202); the reinforcing ribs (206) are fixedly connected to the box body (2); and the reinforcing ribs (206) are used to relieve part of the stress in four key stress concentration areas; A bearing plate (207) is fixedly connected to the top of the box body (2); Reinforcement grooves (208) are provided on both sides of the bottom of the box body (2), and four reinforcement plates (209) are fixedly connected in the reinforcement grooves (208).

2. A railway freight axle box according to claim 1, characterized in that: The axle box body is a bilaterally symmetrical structure as a whole.

3. The railway freight axle box according to claim 1, characterized in that: The first wear plate (205) and the second wear plate (204) are high manganese wear-resistant plates.

4. The railway freight axle box according to claim 1, characterized in that: The positions of the shaft box mounting hole (201), the support plate (202), the second wear plate (204), and the first wear plate (205) are consistent with those of the existing Y25 shaft box, and can be replaced in parallel.

5. A bogie, characterized in that: A railway freight axle box comprising any one of claims 1 to 4, further comprising a wheel axle pair (1) and a frame (4), wherein the wheel axle pair (1) comprises wheels and a rotating shaft, wherein the rotating shaft is mounted in the axle box (2) via a bearing, wherein the axle box (2) is connected to the frame (4) via a guide frame seat (7) and a suspension damping mechanism (3), wherein a load-bearing hanger (5) is further provided on the axle box (2), and a braking mechanism (6) is directly provided on the wheel axle pair (1) and the frame (4).

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