Jacking sleeve for axle box, axle box sealing structure and vehicle

Abstract

The utility model discloses a top sleeve for an axle box, an axle box sealing structure and a vehicle, and belongs to the technical field of vehicle axles, the top sleeve for the axle box is in the axial direction, the top sleeve for the axle box is provided with a first end face and a second end face which are oppositely arranged, and the first end face is used for abutting against a transmission device of the axle box and provided with a first sealing groove; the second end face is used for being connected with a rotary supporting device in a clamped mode, a second sealing groove is formed in the second end face, and the first sealing groove and the second sealing groove are both used for embedding sealing material pieces; the axle box sealing structure comprises an axle and the top sleeve for the axle box, wherein the axle is arranged in the axle box; the vehicle comprises the axle box sealing structure. Good sealing performance of the end of the axle can be kept, the bearing is protected, dust and other impurities are prevented from entering the bearing, the service life of the bearing is prolonged, the structure is simple, and manufacturing is easy.

Description

Technical Field

[0001] This application belongs to the field of vehicle axle technology, and particularly relates to a top sleeve for an axle box, an axle box sealing structure, and a vehicle. Background Technology

[0002] Some vehicles require power supply for passengers, so the axle ends of the bogies need to be equipped with axle-end generators to generate electricity for passengers during operation. Bogies with axle-end generators are usually equipped with cylindrical roller bearings, but cylindrical roller bearings do not have a sealing structure.

[0003] Existing technologies use a front cover structure for cylindrical roller bearings for sealing. Its function is to create sealing conditions for bearing operation, protect the bearing, prevent dust and impurities from entering the bearing, and extend the bearing's service life. However, the structure is relatively complex, requires high assembly standards, and is not convenient for maintenance. Summary of the Invention

[0004] This application aims to solve the technical problem of axle box sealing to at least a certain extent. To this end, this application provides a top sleeve for axle box, an axle box sealing structure and a vehicle, which can maintain good sealing performance at the axle end, protect the bearing, prevent dust and other impurities from entering the bearing, extend the service life of the bearing, and has a simple structure and is easy to manufacture.

[0005] In a first aspect, embodiments of this application provide a top sleeve for an axle box:

[0006] Along the axial direction of the top sleeve for the axle box, the top sleeve for the axle box has a first end face and a second end face arranged opposite to each other. The first end face is used to abut against the transmission device of the axle box and is provided with a first sealing groove. The second end face is used to engage with the rotating support device and is provided with a second sealing groove. Both the first sealing groove and the second sealing groove are used to embed sealing materials.

[0007] In some embodiments, the second end face is provided with a notch for one end of the rotating support device to be engaged.

[0008] In some embodiments, the notch includes a bottom wall, a first side wall, and a second side wall. The outer edge and inner edge of the bottom wall are connected to the first side wall and the second side wall, respectively. The first side wall is opposite to the second side wall, and a second sealing groove is formed in the bottom wall.

[0009] In some embodiments, the first sealing groove and the second sealing groove are annular, and the diameter of the second sealing groove is smaller than that of the first sealing groove.

[0010] In some embodiments, the second sidewall is closer to the centerline of the top sleeve of the axle box than the first sidewall; the first sidewall is closer to the end of the top sleeve of the axle box than the second sidewall.

[0011] In some embodiments, the length of the first sidewall is greater than the length of the second sidewall on the central axis of the top sleeve of the axle box.

[0012] Secondly, embodiments of this application provide an axle box sealing structure, which includes an axle disposed inside the axle box and the aforementioned axle box top sleeve sleeved on the axle.

[0013] In some embodiments, a transmission device fitted onto the axle is also included, the transmission device abutting against the first end face of the top sleeve for the axle box.

[0014] In some embodiments, a swivel support device fitted onto the axle is also included, which engages with the second end face of the top sleeve for the axle box.

[0015] Thirdly, embodiments of this application provide a vehicle that includes the aforementioned axle box sealing structure.

[0016] As can be seen from the above technical solution, the beneficial effects of this application are as follows:

[0017] 1. This application adopts a method of setting a first sealing groove on the first end face and a second sealing groove on the second end face, forming a sealing structure at both ends of the top sleeve of the axle box. This can seal both the transmission device at the end of the axle and the rotating support device on the axle, thus forming an effective seal between the transmission device and the rotating support device. This can maintain good sealing performance at the end of the axle, protect the bearing, prevent dust and other impurities from entering the bearing, and extend the service life of the bearing.

[0018] 2. This application adopts the above-mentioned axle box top sleeve. By fitting it onto the axle, it can seal other components on both sides of the axle box top sleeve on the axle. This simplifies the original sealing structure, makes the structure more compact, facilitates installation, simplifies operation and maintenance, and saves manufacturing costs.

[0019] 3. By adopting the above-mentioned axle box sealing structure, this application can protect the rotating support device and the positioning transmission device while providing sealing and protection, thus simplifying the axle box structure. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced one by one below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other embodiments and drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A cross-sectional schematic diagram of an embodiment of the top sleeve for the axle box of the present invention is shown;

[0022] Figure 2 A first end view of an embodiment of the top sleeve for the axle box of the present invention is shown;

[0023] Figure 3 A second end view of an embodiment of the top sleeve for the axle box of the present invention is shown;

[0024] Figure 4 A schematic diagram of an embodiment of the axle box sealing structure of the present invention is shown;

[0025] Reference numerals: 100, top sleeve for axle box; 110, first end face; 111, first sealing groove; 120, second end face; 121, notch; 1211, first side wall; 1212, second side wall; 1213, bottom wall; 1214, second sealing groove; 200, transmission device; 300, rotating support device; 400, axle. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0027] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0028] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0029] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0030] This application is described below with reference to the accompanying drawings and specific embodiments:

[0031] Please refer to Figure 1 According to a first aspect of this application, an axle box top sleeve 100 is provided. It is annular in shape and is fitted onto an axle 400. An axle box is disposed at one end of the axle 400. The axle box top sleeve 100 is located at the sealing point of the axle box. It employs a special design. Specifically, along the axial direction of the axle box top sleeve 100, it has a first end face 110 and a second end face 120 disposed opposite to each other, i.e., at both ends of the annular axis. Both the first end face 110 and the second end face 120 are annular. The first end face 110 is used to abut against the transmission device 2 of the axle box. 00, "contact" means to come into contact with each other without forming a connection. The first end face 110 is recessed with a first sealing groove 111. The second end face 120 is used to engage with the rotary support device 300. One end of the rotary support device 300 can be engaged with the second end face 120, such as by being engaged into the second end face 120. The second end face 120 is recessed with a second sealing groove 1214. Both the first sealing groove 111 and the second sealing groove 1214 are used to embed sealing materials. The sealing materials are made of soft materials, such as rubber sealing rings, or other sealing materials may be used.

[0032] In the prior art, the axle 400 end is sealed using a front cover structure. This front cover structure is relatively complex. While it can prevent impurities from entering the bearing and protect it, it requires high assembly standards and is inconvenient for maintenance. This application uses a method where a first sealing groove 111 is provided on the first end face 110 and a second sealing groove 1214 is provided on the second end face 120. This forms a sealing structure at both ends of the axle box top sleeve 100. This seals both the transmission device 200 at the axle 400 end and the rotating support device 300 on the axle 400. This creates an effective seal between the transmission device 200 and the rotating support device 300, maintaining good sealing at the axle 400 end, protecting the bearing, preventing dust and other impurities from entering the bearing, and extending the bearing's service life.

[0033] Please refer to Figure 2 and Figure 3In some embodiments, the second end face 120 is provided with a notch 121, which is formed by the second end face 120 being recessed inward. The notch 121 is used for one end of the rotary support device 300 to be inserted. As shown in the figure, after the notch 121 is provided, an inner edge is formed on the second end face 120 inside the notch 121 and an outer edge is formed on the outer edge of the notch 121. The inner edge can be inserted into the position between one end of the rotary support device 300 and the axle 400. In this way, one end of the rotary support device 300 will fit the inner edge inside. In some embodiments, as shown in the figure, the notch 121 includes a bottom wall 1213, a first side wall 1211, and a second side wall 1212. The outer edge and inner edge of the bottom wall 1213 are connected to the first side wall 1211 and the second side wall 1212, respectively. The first side wall 1211 and the second side wall 1212 are opposite to each other and both perpendicular to the bottom wall 1213. A second sealing groove 1214 is formed in the bottom wall 1213, that is, the second sealing groove 1214 is an annular groove recessed on the wall surface of the bottom wall 1213. In an optional embodiment, a shallow groove that is recessed inward is provided at the outer edge of the first end face. The shallow groove is annular, and the shallow groove can avoid components at other axle boxes outside the first end face 110.

[0034] Please refer to Figure 1 In some embodiments, the first sealing groove 111 and the second sealing groove 1214 are annular. Since both the first sealing groove 111 and the second sealing groove 1214 are provided on the end face, an annular groove can be formed along the shape of the first end face 110 or the second end face 120. The diameter of the second sealing groove 1214 is smaller than that of the first sealing groove 111, that is, the second sealing groove 1214 is closer to the axle 400 than the first sealing groove 111. In some embodiments, the second sidewall 1212 is closer to the central axis of the axle box top sleeve 100 than the first sidewall 1211. Due to the notch 121, opposing first sidewalls 1211 and second sidewalls 1212 are formed in the radial direction of the axle box top sleeve 100. The first sidewall 1211 is closer to the outer side of the axle box top sleeve 100, and the second sidewall 1212 is closer to the inner side of the axle box top sleeve 100. The first sidewall 1211 is closer to the end of the axle box top sleeve 100 than the second sidewall 1212. That is, after the notch 121 is provided, it is more concave at the inner edge of the second end face 120. On the central axis of the axle box top sleeve 100, the first sidewall 1211 is closer to the rotary support device 300. In some embodiments, on the central axis of the top sleeve 100 for the axle box, the length of the first sidewall 1211 is greater than the length of the second sidewall 1212. That is, the second sidewall 1212, which engages with one end of the rotary support device 300, is shorter, while the first sidewall 1211, which covers one end of the rotary support device 300, is longer. This arrangement provides better protection, preventing impurities from entering the interior of the rotary support device 300, and also achieves a better sealing effect at one end of the rotary support device 300.

[0035] Please refer to Figure 4 According to a second aspect of this application, an axle box sealing structure is provided, which includes an axle 400 disposed inside the axle box and the aforementioned axle box top sleeve 100 sleeved on the axle 400. The axial top sleeve is interference-fitted with the axle 400 and can rotate with the axle 400, sealing both ends during rotation. In some embodiments, the axle box sealing structure further includes a transmission device 200 sleeved on the axle 400. The transmission device 200 abuts against the first end face 110 of the axle box top sleeve 100. The transmission device 200 adopts a pulley that can drive a generator at the axle end, so that the axle box top sleeve 100 can contact and seal with the pulley at the first end face 110. In some embodiments, the axle box sealing structure further includes a rotating support device 300 sleeved on the axle 400. The rotating support device 300 is engaged with the second end face 120 of the axle box top sleeve 100. The rotating support device 300 uses a bearing, such as a cylindrical roller bearing. One end of the bearing is engaged with the second end face 120 of the axle box top sleeve 100, which can protect and seal the bearing.

[0036] Existing axle box sealing structures utilize the front cover for sealing, but this sealing structure is relatively complex and has high manufacturing costs. This application, however, employs the aforementioned axle box top sleeve 100. By fitting it onto the axle 400, it can seal other components on both sides of the axle box top sleeve 100 on the axle 400. This simplifies the original sealing structure, makes the structure more compact, facilitates installation, simplifies operation and maintenance, and saves manufacturing costs.

[0037] According to a third aspect of this application, a vehicle is provided, which includes the axle box sealing structure described above. The axle box sealing structure is disposed at the axle 400 position of the vehicle, and the configuration of the axle box sealing structure remains unchanged as described above.

[0038] In existing vehicles, the axial seal is achieved by the front cover. However, this application, by adopting the aforementioned axle box sealing structure, can protect the rotating support device 300 and the positioning transmission device 200 while providing sealing and protection, thus simplifying the axle box structure.

[0039] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," "optional example," or "optional implementation," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0040] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0041] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A top sleeve for an axle box, characterized in that: Along the axial direction of the top sleeve for the axle box, the top sleeve for the axle box has a first end face (110) and a second end face (120) arranged opposite to each other. The first end face (110) is used to abut against the transmission device (200) of the axle box. The first end face (110) is provided with a first sealing groove (111). The second end face (120) is used to engage with the rotating support device (300). The second end face (120) is provided with a second sealing groove (1214). Both the first sealing groove (111) and the second sealing groove (1214) are used to embed sealing materials.

2. The top sleeve for the axle box according to claim 1, characterized in that, The second end face (120) is provided with a notch (121), which is used for one end of the rotary support device (300) to be inserted.

3. The top sleeve for the axle box according to claim 2, characterized in that, The notch (121) includes a bottom wall (1213), a first side wall (1211), and a second side wall (1212). The outer edge and inner edge of the bottom wall (1213) are connected to the first side wall (1211) and the second side wall (1212) respectively. The first side wall (1211) is opposite to the second side wall (1212). The bottom wall (1213) has a second sealing groove (1214).

4. The top sleeve for the axle box according to claim 3, characterized in that, The first sealing groove (111) and the second sealing groove (1214) are annular, and the diameter of the second sealing groove (1214) is smaller than that of the first sealing groove (111).

5. The top sleeve for the axle box according to claim 3, characterized in that, The second sidewall (1212) is closer to the central axis of the top sleeve of the axle box than the first sidewall (1211); the first sidewall (1211) is closer to the end of the top sleeve of the axle box than the second sidewall (1212).

6. The top sleeve for the axle box according to claim 5, characterized in that, On the central axis of the top sleeve for the axle box, the length of the first side wall (1211) is greater than the length of the second side wall (1212).

7. A shaft box sealing structure, characterized in that, Includes an axle (400) disposed within the axle box and a top sleeve for the axle box as described in any one of claims 1-6, sleeved on the axle (400).

8. The axle box sealing structure according to claim 7, characterized in that, It also includes a transmission device (200) sleeved on the axle (400), the transmission device (200) abutting against the first end face (110) of the top sleeve for the axle box.

9. The axle box sealing structure according to claim 7, characterized in that, It also includes a swivel support device (300) sleeved on the axle (400), the swivel support device (300) being engaged with the second end face (120) of the top sleeve for the axle box.

10. A vehicle, characterized in that, Includes the axle box sealing structure as described in any one of claims 7-9.

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