Hub integrated motor sealing device and working method thereof

Abstract

The invention belongs to the technical field of engineering elements, and particularly relates to sealing, in particular to a hub integrated motor sealing device and a working method thereof. The invention provides a hub integrated motor sealing device, which comprises an outer oil seal and an inner oil seal, and is characterized in that the outer oil seal is suitable for circumferentially rotating relative to the inner oil seal; the supporting ring is detachably arranged on the outer oil seal and is suitable for limiting the inner oil seal; the adjusting piece is arranged on the bottom wall of the inner oil seal and is suitable for abutting against the outer oil seal; when the outer oil seal and the inner oil seal are in the initial state, the adjusting piece is squeezed by the outer oil seal, so that the lower bottom wall of the adjusting piece abuts against the bottom wall of the inner oil seal. When the inner oil seal moves upwards relative to the outer oil seal, the bottom wall of the adjusting piece abuts against the inner wall of the outer oil seal, and the adjusting piece is suitable for preventing impurities from entering the position between the outer oil seal and the inner oil seal. Through the arrangement of the adjusting piece, when the outer oil seal and the inner oil seal move relatively, the adjusting piece not only can prevent impurities from entering, but also can prevent cooling liquid in the outer oil seal from overflowing outwards.

Description

Technical Field

[0001] The present invention belongs to the technical field of engineering components, and specifically relates to sealing, and in particular to a hub-integrated motor sealing device and a working method thereof. Background Art

[0002] With the rapid development of the new energy vehicle industry, higher requirements are placed on the power system of electric vehicles. Among them, hub-integrated motors have been widely used due to their high efficiency, energy saving and compact size.

[0003] In actual use, it is found that due to the complex and changeable driving environment of vehicles, the existing sealing measures generally have the problems of strong fragility and low durability, and often only focus on strengthening a single function, ignoring the importance of comprehensive protection effect. Especially in high temperature and humid environment, traditional sealing materials are prone to deformation or even failure, further reducing the reliability of the system.

[0004] Therefore, how to prevent external moisture and dust from entering the interior of the motor is an urgent problem to be solved in the art.

[0005] It should be noted that the above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of the prior art. Summary of the invention

[0006] The disclosed embodiments at least provide a hub-integrated motor sealing device and a working method thereof.

[0007] In a first aspect, an embodiment of the present disclosure provides a hub-integrated motor sealing device, comprising: An outer oil seal, which is annular; An inner oil seal, the outer ring of which is inserted into the outer oil seal, and the outer oil seal is suitable for circumferential rotation relative to the inner oil seal; A support ring, which is detachably arranged on the outer oil seal and is suitable for limiting the inner oil seal; An adjusting member, which is arranged on the bottom wall of the inner oil seal and is suitable for abutting against the outer oil seal; Wherein, if the outer oil seal and the inner oil seal are in the initial state, the adjusting member is squeezed by the outer oil seal so that its lower bottom wall abuts against the bottom wall of the inner oil seal, and the adjusting member is suitable for preventing impurities from entering between the outer oil seal and the inner oil seal; If the inner oil seal moves upward relative to the outer oil seal, the bottom wall of the adjusting member abuts against the inner wall of the outer oil seal, and the adjusting member is suitable for preventing the coolant in the outer oil seal from overflowing outward.

[0008] In an optional embodiment, the outer oil seal includes: a first frame, which is made of metal and is "L" shaped; A first protective cover is arranged on the outer wall of the first frame, and the outer wall of the first protective cover abuts against the inner wall of the shell. A positioning groove is annularly provided at the upper end of the inner wall of the first frame, and the support ring is suitable for being inserted into the positioning groove.

[0009] In an optional embodiment, the inner oil seal includes: a second frame, which is made of metal and is "L" shaped; A second protective cover is arranged on the outer wall of the second frame to reduce friction between the second frame and the first frame; A plurality of extension rings are arranged on the outer wall of the second protective sleeve and abut against the inner wall of the first frame.

[0010] In an optional embodiment, the upper portion of the adjusting member is a rigid member, and the lower portion of the adjusting member is an elastic member; The adjusting member is adapted to seal a first gap between the second protective cover and the first protective cover; Wherein, when the outer oil seal and the inner oil seal are in the initial state, the adjusting member is in a "U" shape, and the side wall of the adjusting member abuts against the first frame; If the inner oil seal moves upward relative to the outer oil seal, the lower end wall of the adjusting member abuts against the side wall of the first frame, and the outer side wall of the adjusting member abuts against the inner bottom wall of the first frame.

[0011] In an optional embodiment, the support ring has an L-shaped cross-section, and includes a horizontal section and a vertical section. The vertical section is disposed above the second frame, and a second gap is provided between the lower end of the vertical section and the second frame.

[0012] In an optional embodiment, the horizontal section is provided with a plurality of filling holes at equal intervals along the circumferential direction, and the coolant is suitable for flowing through each filling hole to the third gap between the first skeleton and the extension ring.

[0013] In an optional embodiment, a convex ring is provided on the first protective cover near the bottom wall of the second protective cover; A wear-resistant ring is arranged on the bottom wall of the second protective sleeve corresponding to the convex ring, and the wear-resistant ring is suitable for abutting against the convex ring.

[0014] In an optional embodiment, it includes: An outer oil seal, which is annular; An inner oil seal, the outer ring of which is inserted into the outer oil seal, and the outer oil seal is suitable for circumferential rotation relative to the inner oil seal; A support ring, which is detachably arranged on the outer oil seal and is suitable for limiting the inner oil seal; An adjusting member, which is arranged on the bottom wall of the inner oil seal; The upper part of the adjusting member is a rigid member, and the lower part of the adjusting member is an elastic member; The adjusting member is adapted to seal a first gap between the second protective cover and the first protective cover; Wherein, when the outer oil seal and the inner oil seal are in the initial state, the adjusting member is in a "U" shape, and the side wall of the adjusting member abuts against the outer oil seal; If the inner oil seal moves upward relative to the outer oil seal, the lower end wall of the adjusting member abuts against the side wall of the outer oil seal, and the outer side wall of the adjusting member abuts against the inner bottom wall of the outer oil seal.

[0015] In an optional embodiment, the outer oil seal includes: a first frame, which is made of metal and is "L" shaped; A first protective cover is arranged on the outer wall of the first frame, and the outer wall of the first protective cover abuts against the inner wall of the shell. A positioning groove is annularly provided at the upper end of the inner wall of the first frame, and the support ring is suitable for being inserted into the positioning groove.

[0016] In an optional embodiment, the inner oil seal includes: a second frame, which is made of metal and is "L" shaped; A second protective cover is arranged on the outer wall of the second frame to reduce friction between the second frame and the first frame; A plurality of extension rings are arranged on the outer wall of the second protective sleeve and abut against the inner wall of the first frame.

[0017] In an optional embodiment, a convex ring is provided on the first protective cover near the bottom wall of the second protective cover; A wear-resistant ring is arranged on the bottom wall of the second protective sleeve corresponding to the convex ring, and the wear-resistant ring is suitable for abutting against the convex ring.

[0018] In a second aspect, the present disclosure also provides a working method of a sealing device, the working method comprising: Wherein, if the outer oil seal and the inner oil seal are in the initial state, the adjusting member is squeezed by the outer oil seal so that its lower bottom wall abuts against the bottom wall of the inner oil seal, and the adjusting member is suitable for preventing impurities from entering between the outer oil seal and the inner oil seal; If the inner oil seal moves upward relative to the outer oil seal, the bottom wall of the adjusting member abuts against the inner wall of the outer oil seal, and the adjusting member is suitable for preventing the coolant in the outer oil seal from overflowing outward.

[0019] The beneficial effect of the present invention is that a hub-integrated motor sealing device and a working method thereof of the present invention cooperate with an adjusting member and an inner oil seal and an outer oil seal. When the outer oil seal and the inner oil seal are in an initial state, the side wall of the adjusting member abuts against the inner wall of the outer oil seal, and the adjusting member is U-shaped as a whole, and the bottom wall abuts against the bottom wall of the inner oil seal to prevent impurities from entering between the outer oil seal and the inner oil seal; and when the inner oil seal moves upward relative to the outer oil seal, the bottom wall of the adjusting member abuts against the inner wall of the outer oil seal, and the adjusting member is suitable for preventing the coolant in the outer oil seal from overflowing outward, thereby improving the sealing performance.

[0020] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, this article specifically cites preferred embodiments and provides detailed descriptions as follows in conjunction with the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A three-dimensional diagram of a hub-integrated motor sealing device provided in an embodiment of the present disclosure; Figure 2 A front view of a hub-integrated motor sealing device provided in an embodiment of the present disclosure; Figure 3 A schematic diagram of an inner oil seal moving upward relative to an outer oil seal according to an embodiment of the present disclosure; Figure 4 A three-dimensional diagram of the supporting ring and the inner oil seal in abutment with each other provided in an embodiment of the present disclosure.

[0024] In the figure: 1. External oil seal; 11. First frame; 12. First protective sleeve; 13. Positioning groove; 14. Convex ring; 2. Inner oil seal; 21. Second frame; 22. Second protective cover; 23. Extension ring; 24. Wear-resistant ring; 3. Support ring; 30. Filling hole; 31. First gap; 32. Second gap; 33. Third gap; 4. Adjustment part; 41. Upper part; 42. Lower part. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In this article, when it is mentioned that the first component is located on the second component, this may mean that the first component may be directly formed on the second component, or the third component may be interposed between the first component and the second component. In addition, in the drawings, in order to effectively describe the technical content, the thickness of the components may be exaggerated or reduced.

[0027] Herein, example embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. For example, the expression "at least one of a, b, and L" should be understood to include only a, only b, only L, both a and b, both a and L, both b and L, or all of a, b, and L.

[0028] The terms used herein are only used to describe specific exemplary configurations and are not intended to be limited. As used herein, the singular articles "one", "an" and "the" may also be intended to include plural forms, unless it is clearly indicated above that this is not the case. The terms "comprise", "include" and "have" are inclusive, and therefore specify the presence of features, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components and / or combinations thereof. The method steps, processes and operations described herein should not be interpreted as necessarily requiring them to be performed in the specific order discussed or shown, unless specifically identified as an execution order. Additional or alternative steps may be adopted.

[0029] As used herein, the phrases "in one embodiment," "according to one embodiment," "in some embodiments," and the like generally refer to the fact that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Therefore, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, so that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," and the like are used to "serve as an example, instance, or illustration." Any implementation, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. On the contrary, the use of the terms "example," "exemplary," and the like is intended to present concepts in a concrete manner.

[0030] The research found that the shortcomings of the existing technology are: in actual use, it was found that due to the complex and changeable driving environment of the vehicle; the existing sealing measures generally have the problems of strong fragility and low durability, and often only focus on strengthening a single function, ignoring the importance of comprehensive protection effect. Especially in high temperature and humid environment, traditional sealing materials are prone to deformation or even failure, further reducing the reliability of the system.

[0031] Therefore, how to prevent external moisture and dust from entering the interior of the motor is an urgent problem to be solved in the art.

[0032] The defects existing in the above solutions are the results obtained by the inventor after practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed by the present invention in this article for the above problems should be the contributions made by the inventor to the present invention during the disclosure process.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0035] like Figures 1 to 4 As shown, some embodiments provide a hub-integrated motor sealing device, including: an outer oil seal 1, which is annular; the outer oil seal 1 is fixed to the inner wall of the shell, and the outer oil seal 1 is suitable for rotating relative to the inner oil seal 2. The inner oil seal 2, whose outer ring is inserted into the outer oil seal 1, and the inner ring of the inner oil seal 2 is fixed to the outer wall of the shaft. A support ring 3 is disassembled and arranged on the outer oil seal 1, and is suitable for limiting the inner oil seal 2; the arrangement of the support ring 3 facilitates the disassembly of the inner oil seal 2 and the outer oil seal 1, and avoids damage to other components during disassembly. The adjusting member 4 is arranged on the bottom wall of the inner oil seal 2 and is suitable for abutting against the outer oil seal 1; wherein, if the outer oil seal 1 and the inner oil seal 2 are in the initial state, the adjusting member 4 is squeezed by the outer oil seal 1 so that its lower bottom wall abuts against the bottom wall of the inner oil seal 2, and the adjusting member 4 is suitable for preventing impurities from entering between the outer oil seal 1 and the inner oil seal 2; if the inner oil seal 2 moves upward relative to the outer oil seal 1, the bottom wall of the adjusting member 4 abuts against the inner wall of the outer oil seal 1, and the adjusting member 4 is suitable for preventing the coolant in the outer oil seal 1 from overflowing outward. Through the cooperation between the adjusting member 4 and the inner oil seal 2 and the outer oil seal 1, when the outer oil seal 1 and the inner oil seal 2 are in the initial state, the side wall of the adjusting member 4 abuts against the inner wall of the outer oil seal 1, and the adjusting member 4 is U-shaped as a whole, and the bottom wall abuts against the bottom wall of the inner oil seal 2, so as to prevent impurities from entering between the outer oil seal 1 and the inner oil seal 2; and when the inner oil seal 2 moves upward relative to the outer oil seal 1, the bottom wall of the adjusting member 4 abuts against the inner wall of the outer oil seal 1, and the adjusting member 4 is suitable for preventing the coolant in the outer oil seal 1 from overflowing outward, thereby improving the sealing performance.

[0036] Reference Figure 2 , the outer oil seal 1 comprises: a first frame 11, which is made of metal and is "L" shaped; The first protective cover 12 is arranged on the outer wall of the first frame 11, and the outer wall of the first protective cover 12 abuts against the inner wall of the shell. The first protective cover 12 is made of rubber, and the rubber formula adopts a blend of boron nitride and graphite to improve the thermal conductivity of the rubber and increase the lubricity. A positioning groove 13 is annularly provided at the upper end of the inner wall of the first frame 11, and the support ring 3 is suitable for being inserted into the positioning groove 13. After the inner oil seal 2 is inserted into the outer oil seal 1, one end of the support ring 3 is fixed in the positioning groove 13, and the other end of the support ring 3 is close to the inner oil seal 2 to limit the inner oil seal 2.

[0037] Reference Figure 2 The inner oil seal 2 includes: a second frame 21, which is made of metal and is "L" shaped; a second protective cover 22, which is arranged on the outer wall of the second frame 21 to reduce the friction between the second frame 21 and the first frame 11; and a plurality of extension rings 23, which are arranged on the outer wall of the second protective cover 22 and abut against the inner wall of the first frame 11. The outer end of the extension ring 23 abuts against the inner wall of the first frame 11. When the coolant is transported into the first frame 11 through the filling hole 30, the coolant is suitable for being stored in the cavity formed between the extension ring 23 and the first frame 11, which plays a role in cooling and lubrication. The second protective cover 22 and the extension ring 23 are both made of rubber, and the rubber formula uses boron nitride and graphite blending to improve the thermal conductivity and lubricity of the rubber.

[0038] The inner oil seal 2 and the outer oil seal 1 described in this embodiment adopt a multi-lip structure and a labyrinth design, which can effectively seal muddy water and prevent muddy water from entering the gap between the inner oil seal 2 and the outer oil seal 1.

[0039] Reference Figure 2 , the upper part 41 of the adjusting member 4 is a rigid member, and the lower part 42 of the adjusting member 4 is an elastic member; the adjusting member 4 is suitable for sealing the first gap 31 between the second protective cover 22 and the first protective cover 12; wherein, if the outer oil seal 1 and the inner oil seal 2 are in the initial state, the adjusting member 4 is in a "U" shape, and the side wall of the adjusting member 4 abuts against the first frame 11; at this time, the adjusting member 4 is suitable for sealing the first gap 31 between the inner oil seal 2 and the outer oil seal 1 to prevent impurities such as muddy water from passing through the first gap 31 between the first protective cover 12 and the shaft and entering the first gap 31 between the outer oil seal 1 and the inner oil seal 2. If the inner oil seal 2 moves upward relative to the outer oil seal 1, the lower end wall of the adjusting member 4 abuts against the side wall of the first frame 11, and the outer side wall of the adjusting member 4 abuts against the inner bottom wall of the first frame 11. The distance between the inner oil seal 2 and the outer oil seal 1 increases, and the position of the tangent point between the lower end of the adjusting member 4 and the inner wall of the first frame 11 changes, which can effectively prevent the coolant between the inner oil seal 2 and the outer oil seal 1 from leaking outward.

[0040] Reference Figure 1The support ring 3 has an L-shaped cross section, and includes a horizontal section and a vertical section. The vertical section is arranged above the second frame 21. The horizontal section is suitable for being inserted into the positioning groove 13, and a second gap 32 is provided between the lower end of the vertical section and the second frame 21. The horizontal section is provided with a plurality of filling holes 30 at equal intervals along the circumferential direction, and the coolant is suitable for flowing to the third gap 33 between the first frame 11 and the extension ring 23 through each of the filling holes 30.

[0041] Furthermore, in order to avoid damage to the product during press-fitting and excessive friction after pressing, a convex ring 14 is provided at the first protective cover 12 near the bottom wall of the second protective cover 22; A wear-resistant ring 24 is disposed on the bottom wall of the second protective sleeve 22 corresponding to the convex ring 14 , and the wear-resistant ring 24 is suitable for abutting against the convex ring 14 .

[0042] Some embodiments provide a hub-integrated motor sealing device, comprising: An outer oil seal 1, which is annular; The inner oil seal 2 has an outer ring inserted into the outer oil seal 1, and the outer oil seal 1 is suitable for circumferential rotation relative to the inner oil seal 2; A support ring 3, which is detachably arranged on the outer oil seal 1 and is suitable for limiting the position of the inner oil seal 2; An adjusting member 4, which is arranged on the bottom wall of the inner oil seal 2; The upper portion 41 of the adjusting member 4 is a rigid member, and the lower portion 42 of the adjusting member 4 is an elastic member; The adjusting member 4 is adapted to seal a first gap 31 between the second protective cover 22 and the first protective cover 12; Wherein, if the outer oil seal 1 and the inner oil seal 2 are in the initial state, the adjusting member 4 is in a "U" shape, and the side wall of the adjusting member 4 abuts against the outer oil seal 1; When the inner oil seal 2 moves upward relative to the outer oil seal 1 , the lower end wall of the adjusting member 4 abuts against the side wall of the outer oil seal 1 , and the outer side wall of the adjusting member 4 abuts against the inner bottom wall of the outer oil seal 1 .

[0043] Furthermore, the outer oil seal 1 comprises: a first frame 11, which is made of metal and is "L" shaped; The first protective cover 12 is disposed on the outer wall of the first frame 11, and the outer wall of the first protective cover 12 abuts against the inner wall of the shell. A positioning groove 13 is formed in an annular shape on the upper end of the inner wall of the first frame 11 , and the support ring 3 is suitable for being inserted into the positioning groove 13 .

[0044] Furthermore, the inner oil seal 2 comprises: a second frame 21, which is made of metal and is "L" shaped; A second protective cover 22, which is disposed on the outer wall of the second frame 21 to reduce friction between the second frame 21 and the first frame 11; A plurality of extension rings 23 are disposed on the outer wall of the second protective cover 22 and abut against the inner wall of the first frame 11 .

[0045] Furthermore, the first protective cover 12 is provided with a convex ring 14 near the bottom wall of the second protective cover 22; A wear-resistant ring 24 is disposed on the bottom wall of the second protective sleeve 22 corresponding to the convex ring 14 , and the wear-resistant ring 24 is suitable for abutting against the convex ring 14 .

[0046] Some embodiments provide a working method of a sealing device, the working method comprising: Wherein, if the outer oil seal 1 and the inner oil seal 2 are in the initial state, the adjusting member 4 is squeezed by the outer oil seal 1 so that its lower bottom wall abuts against the bottom wall of the inner oil seal 2, and the adjusting member 4 is suitable for preventing impurities from entering between the outer oil seal 1 and the inner oil seal 2; If the inner oil seal 2 moves upward relative to the outer oil seal 1 , the bottom wall of the adjusting member 4 abuts against the inner wall of the outer oil seal 1 , and the adjusting member 4 is suitable for preventing the coolant in the outer oil seal 1 from overflowing outward.

[0047] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, 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 of the present invention. In addition, terms such as "first", "second" and other numerical terms do not imply an order or sequence when used in this document unless explicitly indicated above. Therefore, without departing from the teachings of the example embodiments, the first element, component, region, layer or section discussed above may be referred to as a second element, component, region, layer or section.

[0049] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A hub-integrated motor sealing device, characterized in that: include: An outer oil seal (1) having a ring shape; An inner oil seal (2), the outer ring of which is inserted into the outer oil seal (1), and the outer oil seal (1) is suitable for circumferential rotation relative to the inner oil seal (2); A support ring (3) which is detachably arranged on the outer oil seal (1) and is suitable for limiting the position of the inner oil seal (2); An adjusting member (4) disposed on the bottom wall of the inner oil seal (2) and adapted to abut against the outer oil seal (1); Wherein, when the outer oil seal (1) and the inner oil seal (2) are in an initial state, the adjusting member (4) is squeezed by the outer oil seal (1) so that its lower bottom wall abuts against the bottom wall of the inner oil seal (2), and the adjusting member (4) is suitable for preventing impurities from entering between the outer oil seal (1) and the inner oil seal (2); When the inner oil seal (2) moves upward relative to the outer oil seal (1), the bottom wall of the adjusting member (4) abuts against the inner wall of the outer oil seal (1), and the adjusting member (4) is suitable for preventing the coolant in the outer oil seal (1) from overflowing outward.

2. The hub-integrated motor sealing device according to claim 1, characterized in that: The outer oil seal (1) comprises: a first frame (11) made of metal and in an "L" shape; A first protective sleeve (12) is arranged on the outer wall of the first frame (11), and the outer wall of the first protective sleeve (12) abuts against the inner wall of the shell. A positioning groove (13) is provided in an annular shape at the upper end of the inner wall of the first frame (11), and the support ring (3) is suitable for being inserted into the positioning groove (13).

3. The hub-integrated motor sealing device according to claim 2, characterized in that: The inner oil seal (2) comprises: a second frame (21) made of metal and in an "L" shape; A second protective cover (22) is arranged on the outer wall of the second frame (21) to reduce friction between the second frame (21) and the first frame (11); A plurality of extension rings (23) are arranged on the outer wall of the second protective sleeve (22) and abut against the inner wall of the first frame (11).

4. The hub-integrated motor sealing device according to claim 3, characterized in that: The upper part (41) of the adjusting member (4) is a rigid member, and the lower part (42) of the adjusting member (4) is an elastic member; The adjusting member (4) is suitable for sealing a first gap (31) between the second protective sleeve (22) and the first protective sleeve (12); Wherein, when the outer oil seal (1) and the inner oil seal (2) are in an initial state, the adjusting member (4) is in a "U" shape, and the side wall of the adjusting member (4) abuts against the first frame (11); When the inner oil seal (2) moves upward relative to the outer oil seal (1), the lower end wall of the adjusting member (4) abuts against the side wall of the first frame (11), and the outer side wall of the adjusting member (4) abuts against the inner bottom wall of the first frame (11).

5. The hub-integrated motor sealing device according to claim 4, characterized in that: The support ring (3) has an L-shaped cross section, and comprises a horizontal section and a vertical section, wherein the vertical section is arranged above the second frame (21), and a second gap (32) is provided between the lower end of the vertical section and the second frame (21).

6. The hub-integrated motor sealing device according to claim 5, characterized in that: The horizontal section is provided with a plurality of filling holes (30) at equal intervals along the circumferential direction, and the coolant is suitable for flowing through the filling holes (30) to the third gap (33) between the first skeleton (11) and the extension ring (23).

7. The hub-integrated motor sealing device according to claim 6, characterized in that: The first protective sleeve (12) is provided with a convex ring (14) near the bottom wall of the second protective sleeve (22); A wear-resistant ring (24) is provided on the bottom wall of the second protective sleeve (22) corresponding to the convex ring (14), and the wear-resistant ring (24) is suitable for abutting against the convex ring (14).

8. A hub-integrated motor sealing device, characterized in that: include: An outer oil seal (1) having a ring shape; An inner oil seal (2), the outer ring of which is inserted into the outer oil seal (1), and the outer oil seal (1) is suitable for circumferential rotation relative to the inner oil seal (2); A support ring (3) which is detachably arranged on the outer oil seal (1) and is suitable for limiting the position of the inner oil seal (2); An adjusting member (4) is arranged on the bottom wall of the inner oil seal (2); The upper part (41) of the adjusting member (4) is a rigid member, and the lower part (42) of the adjusting member (4) is an elastic member; The adjusting member (4) is suitable for sealing a first gap (31) between the second protective sleeve (22) and the first protective sleeve (12); Wherein, when the outer oil seal (1) and the inner oil seal (2) are in an initial state, the adjusting member (4) is in a "U" shape, and the side wall of the adjusting member (4) abuts against the outer oil seal (1); When the inner oil seal (2) moves upward relative to the outer oil seal (1), the lower end wall of the adjusting member (4) abuts against the side wall of the outer oil seal (1), and the outer side wall of the adjusting member (4) abuts against the inner bottom wall of the outer oil seal (1).

9. The hub-integrated motor sealing device according to claim 8, characterized in that: The outer oil seal (1) comprises: a first frame (11) made of metal and in an "L" shape; A first protective sleeve (12) is arranged on the outer wall of the first frame (11), and the outer wall of the first protective sleeve (12) abuts against the inner wall of the shell. A positioning groove (13) is provided in an annular shape at the upper end of the inner wall of the first frame (11), and the support ring (3) is suitable for being inserted into the positioning groove (13).

10. The hub-integrated motor sealing device according to claim 9, characterized in that: The inner oil seal (2) comprises: a second frame (21) made of metal and in an "L" shape; A second protective cover (22) is arranged on the outer wall of the second frame (21) to reduce friction between the second frame (21) and the first frame (11); A plurality of extension rings (23) are arranged on the outer wall of the second protective sleeve (22) and abut against the inner wall of the first frame (11).

11. The hub-integrated motor sealing device according to claim 10, characterized in that: The first protective sleeve (12) is provided with a convex ring (14) near the bottom wall of the second protective sleeve (22); A wear-resistant ring (24) is provided on the bottom wall of the second protective sleeve (22) corresponding to the convex ring (14), and the wear-resistant ring (24) is suitable for abutting against the convex ring (14).

12. A method for operating a sealing device, characterized in that: Using the hub-integrated motor sealing device according to any one of claims 1 to 11, the working method include: Wherein, when the outer oil seal (1) and the inner oil seal (2) are in an initial state, the adjusting member (4) is squeezed by the outer oil seal (1) so that its lower bottom wall abuts against the bottom wall of the inner oil seal (2), and the adjusting member (4) is suitable for preventing impurities from entering between the outer oil seal (1) and the inner oil seal (2); When the inner oil seal (2) moves upward relative to the outer oil seal (1), the bottom wall of the adjusting member (4) abuts against the inner wall of the outer oil seal (1), and the adjusting member (4) is suitable for preventing the coolant in the outer oil seal (1) from overflowing outward.

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