Easily-assembled large-tensile high-pressure-resistant oil seal assembly

Abstract

The easy-to-assemble large-stretching high-pressure-resistant oil seal assembly comprises a rubber sealing ring and a structure strengthening ring, the rubber sealing ring comprises a first outer edge, a first transition section and a first inner edge which are sequentially connected in the radial direction of the rubber sealing ring, and the first outer edge is in interference fit with the inner wall of a mounting shell; the first inner edge is in interference fit with the outer wall of the rotating shaft; the structural reinforcing ring is connected with one axial side of the rubber sealing ring and comprises a second outer edge, a second transition section and a second inner edge which are sequentially connected in the radial direction of the structural reinforcing ring, the second outer edge is in interference fit with the inner wall of the mounting shell, the second inner edge is in clearance fit with the outer wall of the rotating shaft, and the structural reinforcing ring is used for supporting and fixing the rubber sealing ring; the structure strengthening ring is provided with a fracture. The large-stretching high-pressure-resistant oil seal assembly easy to assemble can be used under the high-pressure working condition and the special installation condition that a sealing piece needs to be greatly stretched and compressed in the diameter direction in the installation process at the same time, and the use limitation of an oil seal is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid sealing, and particularly relates to an oil seal assembly which is easy to assemble, has large tensile strength and is resistant to high pressure. Background Art

[0002] The function of a rubber oil seal is to prevent lubricating oil and fuel from leaking in systems such as engines, gearboxes, and fuel tanks, and at the same time prevent external impurities from invading the sealing system to protect the normal operation of components such as bearings and gears.

[0003] A rubber oil seal usually has an integral ring structure, with a flexible inner edge having an interference relationship in the diameter direction with the rotating shaft, which can achieve good sealing under both non-pressure and low-pressure conditions. At the same time, it has an outer edge having an interference relationship in the diameter direction with the installation housing to ensure clearance sealing between the outer edge and the installation housing.

[0004] In related technologies, when an oil seal is in use, it may face high-pressure working conditions (pressure value > 0.07 MPa) and special installation conditions (when installing, the seal needs to be greatly stretched and compressed in the diameter direction). For high-pressure working conditions (pressure value > 0.07 MPa), the ISO6194 standard recommends using an inner / outer skeleton rubber oil seal with a metal skeleton or fiber cloth as a structural reinforcement; for special installation conditions (when installing, the seal needs to be greatly stretched and compressed in the diameter direction), leading seal companies such as NOK in Japan, SKF in Sweden, and TRELLEBORG in Sweden mostly use pure rubber oil seals without structural reinforcements.

[0005] However, existing pure rubber oil seals, skeleton rubber oil seals, and rubber oil seals with fabric inserts cannot simultaneously meet the requirements of being used in high-pressure working conditions and special installation conditions where the seal needs to be greatly stretched and compressed in the diameter direction during installation, resulting in great limitations in the use of oil seals. Summary of the Utility Model

[0006] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, the utility model provides an oil seal assembly which is easy to assemble, has large tensile strength and is resistant to high pressure, and can simultaneously meet the requirements of being used in high-pressure working conditions and special installation conditions where the seal needs to be greatly stretched and compressed in the diameter direction during installation, reducing the limitations in the use of oil seals.

[0007] An oil seal assembly with easy assembly, large stretch resistance and high pressure resistance according to an embodiment of the present invention includes a rubber sealing ring and a structure strengthening ring. The rubber sealing ring includes a first outer edge, a first transition section and a first inner edge that are sequentially connected along the radial direction of the rubber sealing ring. The first outer edge is in interference fit with the inner wall of the installation housing, and the first inner edge is in interference fit with the outer wall of the rotating shaft. The rubber sealing ring is used to seal the gap between the installation housing and the rotating shaft. The structure strengthening ring is connected to one axial side of the rubber sealing ring and includes a second outer edge, a second transition section and a second inner edge that are sequentially connected along the radial direction of the structure strengthening ring. The second outer edge is in interference fit with the inner wall of the installation housing, and the second inner edge is in clearance fit with the outer wall of the rotating shaft. The structure strengthening ring is used to support and fix the rubber sealing ring, and the structure strengthening ring has a fracture.

[0008] An oil seal assembly with easy assembly, large stretch resistance and high pressure resistance according to an embodiment of the present invention has at least the following beneficial effects:

[0009] 1. By providing a rubber sealing ring in the present invention, the rubber sealing ring includes a first outer edge, a first transition section and a first inner edge that are sequentially connected along the radial direction of the rubber sealing ring. The first outer edge is in interference fit with the inner wall of the installation housing, and the first inner edge is in interference fit with the outer wall of the rotating shaft. The rubber sealing ring is used to seal the gap between the installation housing and the rotating shaft. Thus, the first outer edge can be in contact and sealed with the inner wall of the installation housing, the first inner edge can be in contact and sealed with the rotating shaft, and the first transition section can provide a flexible connection for the first outer edge and the first inner edge. Furthermore, the first outer edge can provide radial positioning for the rubber sealing ring and radial sealing with the inner wall of the installation housing, and the first inner edge can provide radial sealing between the rubber sealing ring and the rotating shaft and prevent impurities outside the sealing cavity from invading.

[0010] 2. By providing a structure strengthening ring in the present invention, the structure strengthening ring is connected to one axial side of the rubber sealing ring. The structure strengthening ring includes a second outer edge, a second transition section and a second inner edge that are sequentially connected along the radial direction of the structure strengthening ring. The second outer edge is in interference fit with the inner wall of the installation housing, and the second inner edge is in clearance fit with the outer wall of the rotating shaft. The structure strengthening ring is used to support and fix the rubber sealing ring. Thus, the structure strengthening ring can fix and support the rubber sealing ring. Furthermore, the pressure resistance of the oil seal is improved, so that the oil seal can meet the use requirements under high-pressure working conditions.

[0011] 3. By making the structure strengthening ring have a fracture in the present invention, when the oil seal needs to be greatly stretched and compressed in the diameter direction during installation, the structure strengthening ring can open or contract from the fracture, so that the oil seal can adapt to the special installation conditions that require large stretching and compression in the diameter direction during installation. Furthermore, the oil seal can meet the use requirements under both high-pressure working conditions and special installation conditions, reducing the use limitations of the oil seal.

[0012] 4. By making the oil seal consist of a rubber sealing ring and a structure strengthening ring, which respectively provide sealing performance and high-pressure resistance, the utility model solves the contradiction between high-pressure working conditions and special installation requirements, and avoids the over-complex structure when designed as a single component. At the same time, the structure strengthening ring with a break can cooperate with the rubber sealing ring for large-scale stretching, so that the oil seal can be easily assembled.

[0013] 5. By making the rubber sealing ring of the oil seal perform the sealing performance between components with relative rotational movement and the structure strengthening ring perform the pressure-bearing performance of the oil seal, the rubber sealing ring does not need to consider the pressure-bearing and structural stability performance as the main factors when selecting structures and materials, that is, there is no need to use materials such as metal and fiber-cloth as the reinforcing skeleton, and there is no need to use rubber materials with relatively high strength and hardness. It can adapt to the installation situation with relatively high flexibility requirements for the rubber sealing ring during the installation process, that is, the rubber sealing ring needs to be greatly stretched and compressed.

[0014] For an easily assembled large-stretch high-pressure-resistant oil seal assembly according to an embodiment of the utility model, the rubber sealing ring and the structure strengthening ring are bonded by an adhesive.

[0015] For an easily assembled large-stretch high-pressure-resistant oil seal assembly according to an embodiment of the utility model, the first outer edge and the first inner edge protrude toward the axial side of the rubber sealing ring, and a groove for accommodating lubricating fluid is formed between the first outer edge and the first inner edge.

[0016] For an easily assembled large-stretch high-pressure-resistant oil seal assembly according to an embodiment of the utility model, the structure strengthening ring is connected to the side of the rubber sealing ring facing away from the protruding directions of the first outer edge and the first inner edge.

[0017] For an easily assembled large-stretch high-pressure-resistant oil seal assembly according to an embodiment of the utility model, the cross-section of the structure strengthening ring is set as a rectangle, and a chamfer or a fillet is arranged on the edge of the structure strengthening ring close to the rotating shaft.

[0018] For an easily assembled large-stretch high-pressure-resistant oil seal assembly according to an embodiment of the utility model, a protruding sealing lip is arranged on the side of the first inner edge close to the rotating shaft. The cross-section of the structure strengthening ring is set as an L shape. The structure strengthening ring abuts against the side of the rubber sealing ring facing away from the protruding directions of the first outer edge and the first inner edge and the side close to the rotating shaft. The structure strengthening ring is located on the side of the sealing lip away from the protruding direction of the first inner edge.

[0019] For an easily assembled large-stretch high-pressure-resistant oil seal assembly according to an embodiment of the utility model, the two end cut surfaces of the break are set as vertical cut surfaces perpendicular to the end surface of the rubber sealing ring.

[0020] An oil seal assembly with easy assembly, large stretch resistance and high pressure resistance according to an embodiment of the present invention, wherein the cut surfaces at both ends of the fracture are inclined cut surfaces that are inclined to the end surface of the rubber sealing ring.

[0021] An oil seal assembly with easy assembly, large stretch resistance and high pressure resistance according to an embodiment of the present invention, wherein the cut surfaces at both ends of the fracture are respectively set as a first stepped overlapping surface and a second stepped overlapping surface, and the first stepped overlapping surface and the second stepped overlapping surface can overlap with each other.

[0022] An oil seal assembly with easy assembly, large stretch resistance and high pressure resistance according to an embodiment of the present invention, wherein the material of the structure strengthening ring is set as plastic.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description, will become apparent in part from the following description, or will be understood through the practice of the present invention. Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 It is a schematic structural diagram of an oil seal assembly with easy assembly, large stretch resistance and high pressure resistance according to an embodiment of the present invention;

[0026] Figure 2 For Figure 1 The top view shown;

[0027] Figure 3 For Figure 2 The A-A cross-sectional view shown;

[0028] Figure 4 For Figure 2 The A-A cross-sectional view of the embodiment in which the edge of the structure strengthening ring is chamfered shown;

[0029] Figure 5 For Figure 2 The A-A cross-sectional view of the embodiment in which the edge of the structure strengthening ring is rounded shown;

[0030] Figure 6 For Figure 2 The A-A cross-sectional view of the embodiment in which the cross-section of the structure strengthening ring is L-shaped shown;

[0031] Figure 7 For Figure 1Schematic diagram of a structural reinforcement ring with a fracture end face shown as a vertical end face;

[0032] Figure 8 is Figure 1 Schematic diagram of a structural reinforcement ring with a fracture end face shown as an inclined end face;

[0033] Figure 9 is Figure 1 Schematic diagram of a structural reinforcement ring with the two fracture end faces being a first stepped lap face and a second stepped lap face respectively.

[0034] Reference numerals: 100 - rubber sealing ring, 110 - first outer edge, 120 - first transition section, 130 - first inner edge, 140 - structural reinforcement ring, 150 - second outer edge, 160 - second transition section, 170 - second inner edge, 180 - fracture, 190 - groove, 200 - sealing lip, 210 - spring hoop, 220 - annular groove. Detailed implementation manners

[0035] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0036] In the description of the present utility model, it should be understood that for the orientation description, such as the up, down, front, back, left, right, etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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 thus should not be construed as a limitation to the present utility model.

[0037] In the description of the present utility model, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceeding, etc. are understood as not including the present number, and above, below, within, etc. are understood as including the present number. If the first and the second are described, this is only for the purpose of distinguishing technical features and should not be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0038] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation, connection and coupling" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0039] The following describes a large-stretch high-pressure resistant oil seal assembly that is easy to assemble according to an embodiment of the present utility model with reference to the accompanying drawings.

[0040] The present utility model aims to provide an embodiment of a large-stretch high-pressure resistant oil seal assembly that is easy to assemble.

[0041] Refer to Figure 1 、 Figure 2 and Figure 3 In this embodiment, a large-stretch high-pressure resistant oil seal assembly that is easy to assemble mainly includes a rubber sealing ring 100 and a structure strengthening ring 140.

[0042] For the rubber sealing ring 100, the rubber sealing ring 100 includes a first outer edge 110, a first transition section 120 and a first inner edge 130 that are sequentially connected along the radial direction of the rubber sealing ring 100. The first outer edge 110 is in interference fit with the inner wall of the installation housing, and the first inner edge 130 is in interference fit with the outer wall of the rotating shaft. The rubber sealing ring 100 is used to seal the gap between the installation housing and the rotating shaft. Thus, the first outer edge 110 can be in contact with and sealed against the inner wall of the installation housing, the first inner edge 130 can be in contact with and sealed against the rotating shaft, and the first transition section 120 can provide a flexible connection for the first outer edge 110 and the first inner edge 130. Furthermore, the first outer edge 110 can provide radial positioning for the rubber sealing ring 100 and radial sealing with the inner wall of the installation housing, and the first inner edge 130 can provide radial sealing between the rubber sealing ring 100 and the rotating shaft and prevent impurities outside the sealing cavity from invading.

[0043] In some specific embodiments, the first outer edge 110 and the first inner edge 130 protrude towards one axial side of the rubber sealing ring 100, and a groove 190 for accommodating lubricating fluid is formed between the first outer edge 110 and the first inner edge 130. Thus, when the rubber sealing ring 100 seals the gap between the installation housing and the rotating shaft, the lubricating fluid flows into the groove 190, so that the lubricating fluid can squeeze the first inner edge 130 in the groove 190 to maintain close contact with the rotating shaft and squeeze the first outer edge 110 to maintain close contact with the inner wall of the installation housing. Furthermore, the sealing effect of the oil seal is improved.

[0044] In some specific embodiments, a spring hoop 210 is disposed in the groove 190. The spring hoop 210 abuts against one side of the first inner edge 130 located in the groove 190 to squeeze the first inner edge 130 against the rotating shaft, so that the oil seal has a better seal on the rotating shaft.

[0045] Further, a ring groove 220 is provided on one side of the first inner edge 130 located in the groove 190. The ring groove 220 is used to accommodate the spring hoop 210, so that the ring groove 220 can limit the spring hoop 210 and prevent the spring hoop 210 from falling off.

[0046] In some specific embodiments, the rubber sealing ring 100 is made of NBR, FKM or other rubber materials with certain hardness, wear resistance, high temperature resistance and other properties.

[0047] For the structural reinforcement ring 140, the structural reinforcement ring 140 is connected to an axial side of the rubber sealing ring 100. The structural reinforcement ring 140 includes a second outer edge 150, a second transition section 160 and a second inner edge 170 that are sequentially connected along the radial direction of the structural reinforcement ring 140. The second outer edge 150 is in interference fit with the inner wall of the mounting housing, and the second inner edge 170 is in clearance fit with the outer wall of the rotating shaft. The structural reinforcement ring 140 is used to support and fix the rubber sealing ring 100, so that the structural reinforcement ring 140 can fix and support the rubber sealing ring 100, and further improve the pressure resistance of the oil seal, so that the oil seal can meet the use requirements under high-pressure working conditions.

[0048] Further, the structural reinforcement ring 140 has a fracture 180. When the oil seal needs to be greatly stretched and compressed in the diameter direction during installation, the structural reinforcement ring 140 can open or contract from the fracture 180, so that the oil seal can adapt to the special installation conditions that require large stretching and compression in the diameter direction during installation. Further, the oil seal can meet the use requirements under both high-pressure working conditions and special installation conditions, reducing the use limitations of the oil seal.

[0049] It can be understood that in this embodiment, by providing the sealing performance and high-pressure resistance by two different components, namely the rubber sealing ring 100 and the structural reinforcement ring 140, the contradiction between the high-pressure working conditions and the special installation requirements is solved, and the structure is prevented from being too complex when designed as a single component. At the same time, the structural reinforcement ring 140 with a fracture can cooperate with the rubber sealing ring 100 for large-scale stretching, so that the oil seal can be easily assembled.

[0050] Meanwhile, in this embodiment, the oil seal performs the sealing performance between components with relative rotational movement by the rubber sealing ring 100, and the pressure-bearing performance of the oil seal is performed by the structural reinforcement ring 140, so that the rubber sealing ring 100 does not need to consider the pressure-bearing and structural stability performance as the main factors when selecting the structure and materials, that is, there is no need to use materials such as metal and fiber-reinforced cloth as the reinforcing skeleton, and there is no need to use rubber materials with relatively high strength and hardness. It can adapt to the installation situation with relatively high flexibility requirements for the rubber sealing ring 100 during the installation process, that is, the rubber sealing ring 100 needs to be greatly stretched and compressed.

[0051] In some specific embodiments, the rubber sealing ring 100 and the structural reinforcement ring 140 are bonded by an adhesive. Thus, on the one hand, the connection between the rubber sealing ring 100 and the structural reinforcement ring 140 is made more firm, so that the oil seal can meet the requirements for use in special working conditions such as large pressure fluctuation range of the sealing medium and relatively high rotational linear velocity.

[0052] In some specific embodiments, the structural reinforcement ring 140 is connected to the side of the rubber sealing ring 100 that is opposite to the protruding directions of the first outer edge 110 and the first inner edge 130. Thus, the structural reinforcement ring 140 can avoid the notch of the groove 190, and further, prevent the structural reinforcement ring 140 from blocking the notch of the groove 190.

[0053] Refer to Figure 4 and Figure 5 In some specific embodiments, the cross-section of the structural reinforcement ring 140 is set as a rectangle, and a chamfer or a fillet is provided on the edge of the structural reinforcement ring 140 close to the rotating shaft. Thus, the structure of the structural reinforcement ring 140 is simple and easy to manufacture, and the chamfer or fillet on the edge of the structural reinforcement ring 140 can conduct guiding, and further, facilitate the installation of the oil seal.

[0054] Refer to Figure 6 In some specific embodiments, a protruding sealing lip 200 is provided on the side of the first inner edge 130 close to the rotating shaft. The cross-section of the structural reinforcement ring 140 is set as an L shape. The structural reinforcement ring 140 abuts against the side of the rubber sealing ring 100 that is opposite to the protruding directions of the first outer edge 110 and the first inner edge 130 and the side close to the rotating shaft. The structural reinforcement ring 140 is located on the side of the sealing lip 200 away from the protruding direction of the first inner edge 130.

[0055] It can be understood that by making the side of the first inner edge 130 close to the rotation axis have a raised sealing lip 200, a flexible sealing projection part is formed on the first inner edge 130, so that the flexible inner edge of the first inner edge 130 is designed as a structure most suitable for exerting the spiral dynamic pressure effect, improving the sealing performance. In addition, the cross-section of the structure strengthening ring 140 is set to an L shape, and the structure strengthening ring 140 abuts against the side of the rubber sealing ring 100 facing away from the first outer edge 110 and the raised direction of the first inner edge 130 and the side close to the rotation axis. The structure strengthening ring 140 is located on the side of the sealing lip 200 away from the raised direction of the first inner edge 130. Thus, the supporting area of the structure strengthening ring 140 for the rubber sealing ring 100 is larger, and further, the compressive resistance of the oil seal is further improved.

[0056] Referring to Figure 7 , in some specific embodiments, the two end cut surfaces of the fracture 180 are set as vertical cut surfaces perpendicular to the end surface of the rubber sealing ring 100. Thus, the structure of the fracture 180 is simple and convenient for processing and manufacturing.

[0057] Referring to Figure 8 , in some other embodiments, the two end cut surfaces of the fracture 180 are set as inclined cut surfaces inclined to the end surface of the rubber sealing ring 100. Thus, it is convenient for splicing the two ends of the fracture 180.

[0058] Referring to Figure 9 , in some other embodiments, the two end cut surfaces of the fracture 180 are respectively set as a first stepped overlapping surface and a second stepped overlapping surface, and the first stepped overlapping surface and the second stepped overlapping surface can overlap with each other. Thus, the two ends of the edge fracture 180 are spliced.

[0059] In some specific embodiments, the material of the structure strengthening ring 140 is set as plastic. Thus, the structure strengthening ring 140 can have good structural strength and certain elasticity. Further, the structure strengthening ring 140 can simultaneously have good compressive resistance and adapt to the situation of large-scale stretching and compression in the diameter direction during installation.

[0060] Specifically, the material of the structure strengthening ring 140 can be selected from PTFE-based materials, PEEK-based materials or other engineering plastics with certain strength and elasticity.

[0061] In the description of this specification, the descriptions referring to terms such as "one embodiment, some embodiments, illustrative embodiments, examples, specific examples or some examples" etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0062] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments, and various changes can be made without departing from the gist of the present utility model within the scope of knowledge possessed by those of ordinary skill in the art to which it pertains.

Claims

1. An easy-to-assemble large tensile high-pressure oil seal assembly, characterized in that: include: A rubber sealing ring (100), comprising a first outer edge (110), a first transition section (120), and a first inner edge (130) which are sequentially connected along a radial direction of the rubber sealing ring (100), wherein the first outer edge (110) is in interference fit with an inner wall of a mounting housing, and the first inner edge (130) is in interference fit with an outer wall of a rotating shaft, and the rubber sealing ring (100) is used to seal a gap between the mounting housing and the rotating shaft; A structural reinforcement ring (140) is connected to one axial side of the rubber sealing ring (100), and comprises a second outer edge (150), a second transition section (160), and a second inner edge (170) which are sequentially connected along the radial direction of the structural reinforcement ring (140); the second outer edge (150) is interference-fitted with the inner wall of the mounting shell, and the second inner edge (170) is clearance-fitted with the outer wall of the rotating shaft; the structural reinforcement ring (140) is used to support and fix the rubber sealing ring (100); and the structural reinforcement ring (140) has a fracture (180).

2. The easy-to-assemble large tensile high-pressure resistant oil seal assembly according to claim 1, characterized in that: The rubber sealing ring (100) and the structural reinforcement ring (140) are bonded together by an adhesive.

3. The easy-to-assemble large tensile high-pressure resistant oil seal assembly according to claim 1, characterized in that: The first outer edge (110) and the first inner edge (130) protrude toward one axial side of the rubber sealing ring (100), and a groove (190) for accommodating lubricating fluid is formed between the first outer edge (110) and the first inner edge (130).

4. The easy-to-assemble large-tensile high-pressure resistant oil seal assembly according to claim 3, characterized in that: The structural reinforcement ring (140) is connected to a side of the rubber sealing ring (100) that is away from the protruding direction of the first outer edge (110) and the first inner edge (130).

5. The easy-to-assemble large tensile high-pressure resistant oil seal assembly according to claim 4, characterized in that: The cross section of the structural reinforcement ring (140) is arranged to be rectangular, and a side edge of the structural reinforcement ring (140) close to the rotation axis is arranged to be chamfered or rounded.

6. The easy-to-assemble large tensile high-pressure resistant oil seal assembly according to claim 3, characterized in that: The first inner edge (130) has a protruding sealing lip (200) on a side close to the rotating shaft. The cross section of the structural reinforcement ring (140) is arranged to be L-shaped. The structural reinforcement ring (140) abuts against a side of the rubber sealing ring (100) that is away from the first outer edge (110) and the protruding direction of the first inner edge (130) and a side close to the rotating shaft. The structural reinforcement ring (140) is located on a side of the sealing lip (200) that is away from the protruding direction of the first inner edge (130).

7. The easy-to-assemble large-tensile high-pressure oil seal assembly according to claim 1, characterized in that: The cross-sections at both ends of the fracture (180) are arranged as vertical cross-sections perpendicular to the end surface of the rubber sealing ring (100).

8. The easy-to-assemble large tensile high-pressure resistant oil seal assembly according to claim 1, characterized in that: The cut surfaces at both ends of the fracture (180) are arranged as oblique cut surfaces inclined with respect to the end surface of the rubber sealing ring (100).

9. The easy-to-assemble large-tensile high-pressure resistant oil seal assembly according to claim 1, characterized in that: The cut surfaces at both ends of the fracture (180) are respectively arranged as a first step-shaped overlapping surface and a second step-shaped overlapping surface, and the first step-shaped overlapping surface and the second step-shaped overlapping surface can overlap each other.

10. The easy-to-assemble large-tensile high-pressure resistant oil seal assembly according to claim 1, characterized in that: The material of the structural reinforcement ring (140) is set to be plastic.

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