Supporting wheel sealing structure and crawler

Abstract

The utility model relates to a kind of sealing structure of supporting wheel and track machine, wherein, a kind of supporting wheel sealing structure, including wheel shaft, further include: bearing, its inner ring coaxially fixed connection is connected in the wheel shaft;Supporting wheel body, its coaxially fixed connection is connected in the bearing outer ring;Sealing seat plate is installed in the one end of supporting wheel body inner hole, and the inner wall of supporting wheel body and the bearing is simultaneously provided with inner sealing groove to sealing seat plate;Outer sealing ring, it is detachably connected in supporting wheel body inner wall, and with the outer wall sealing cooperation of another end of sealing seat plate;Intermediate sealing body, at least one is provided and detachably connected in supporting wheel body, intermediate sealing body sealing cooperation is in sealing seat plate, intermediate sealing body is close to inner sealing groove relative to outer sealing ring;Inner sealing body, it is filled in inner sealing groove.The utility model can improve the weak sealing ability of the existing supporting wheel sealing structure, leading to the technical problem of short service life of supporting wheel.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, and in particular to a support roller sealing structure and a tracked machine. Background Technology

[0002] Track rollers are key components that support tracked vehicles and enable them to move. Because tracked vehicles operate in relatively harsh environments, track rollers are often submerged in water during operation. This necessitates good sealing performance to ensure the internal bearings can operate continuously in a clean environment and prevent damage from mud and sand. However, current technologies typically seal bearings using only a few sealing lips, making it easy for mud and sand to enter and resulting in relatively weak sealing capabilities. This can easily lead to seal failure and bearing damage. Utility Model Content

[0003] This invention addresses the technical problem that existing track roller sealing structures have weak sealing capabilities, resulting in short track roller service life, by providing a track roller sealing structure and a crawler machine.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0005] On the one hand, this utility model provides a support roller sealing structure, including a wheel axle, and further including:

[0006] The bearing, the inner ring of which is coaxially and fixedly connected to the axle;

[0007] The support roller body is coaxially and fixedly connected to the outer ring of the bearing;

[0008] A sealing seat plate is installed at one end of the inner hole of the support roller body, and the sealing seat plate is provided with an inner sealing groove facing both the bearing and the inner wall of the support roller body;

[0009] An outer sealing ring is detachably connected to the inner wall of the support roller and is sealed to the outer wall of the other end of the sealing seat plate.

[0010] An intermediate sealing body is provided, and is detachably connected to the support roller body. The intermediate sealing body is sealed and fitted to the sealing seat plate. The intermediate sealing body is close to the inner sealing groove relative to the outer sealing ring.

[0011] An inner sealing body that fills the inner sealing groove.

[0012] The beneficial effects of this utility model are: on the contact path between the support roller body and the sealing seat plate, an outer sealing ring, at least one intermediate sealing body and an inner sealing body are arranged sequentially from the inside to the outside to form at least three levels of sealing structure, so as to improve the sealing effect and improve the technical problem that the existing support roller sealing structure has weak sealing ability, resulting in a short service life of the support roller.

[0013] Based on the above technical solution, the present invention can be further improved as follows.

[0014] Furthermore, the inner sealing body includes an outer lip plate, an intermediate lip plate fixedly connected to the outer lip plate near the bearing end, and an inner lip plate fixedly connected to the intermediate lip plate near the bearing end. The other ends of the outer lip plate, intermediate lip plate, and inner lip plate all abut against the groove wall of the inner sealing groove, and one side of the outer lip plate abuts against the inner side of the support wheel body. The outer lip plate, intermediate lip plate, and inner lip plate are arranged sequentially from the inner side of the support wheel body toward the wheel axle.

[0015] Furthermore, the inner sealing body also includes an inner skeleton, one end of which is filled inside the outer lip plate, and the other end extends to the root of one end of the intermediate lip plate and the inner lip plate.

[0016] Furthermore, the inner sealing body also includes an outer partition plate, one end of which abuts against the outer lip plate on the other side facing the middle lip plate, and the other end of which is bent and abuts against the groove wall of the inner sealing groove opposite to the bearing. The other ends of the middle lip plate and the inner lip plate indirectly abut against the groove wall of the inner sealing groove through the other end of the outer partition plate.

[0017] Furthermore, a plurality of primary lips are fixedly connected to the other end of the intermediate lip plate, some of which abut against one end of the outer partition plate, while the others abut against the other end of the outer partition plate.

[0018] Furthermore, the inner sealing body also includes an inner partition plate, one end of which abuts against the groove wall of the inner sealing groove opposite to the inner side of the support roller body, and the other end is bent and abuts against the groove wall of the inner sealing groove opposite to the bearing. The other end of the inner lip plate indirectly abuts against the groove wall of the inner sealing groove through the inner partition plate.

[0019] Furthermore, a plurality of secondary lips are fixedly connected to the other end of the inner lip plate, some of which abut against one end of the inner partition plate, while the others abut against the other end of the inner partition plate.

[0020] Furthermore, the other end of the inner partition is bent and abuts against the side of the intermediate lip plate facing the inner lip plate.

[0021] Furthermore, the intermediate sealing body includes an intermediate sealing ring and an intermediate skeleton. The intermediate sealing ring is detachably connected to the support roller body and abuts against the sealing seat plate, and the intermediate skeleton is filled inside the intermediate sealing ring.

[0022] On the other hand, this utility model provides a tracked machine, including the aforementioned support roller sealing structure. Attached Figure Description

[0023] Figure 1 This is a structural diagram of the support roller sealing structure of this utility model;

[0024] Figure 2 For the present utility model Figure 1 Enlarged view of section A;

[0025] Figure 3 A diagram showing the mud and water penetration path of the oil seal in the support roller sealing structure of this utility model.

[0026] Figure 4 This is a structural diagram of the support roller sealing structure in related technologies;

[0027] Figure 5 For related technologies Figure 4 Enlarged view of section B;

[0028] Figure 6 This is a diagram illustrating the path of mud and water breaking through the oil seal in the support roller sealing structure of related technologies.

[0029] The attached diagram lists the components represented by each number as follows:

[0030] 1. Bearings;

[0031] 2. Support roller body; 21. Outer sealing groove; 22. Intermediate sealing groove;

[0032] 3. Sealing seat plate; 31. Inner sealing groove;

[0033] 4. Outer sealing ring;

[0034] 5. Intermediate sealing body; 51. Intermediate sealing ring; 52. Intermediate skeleton;

[0035] 6. Inner sealing body; 61. Outer lip plate; 62. Intermediate lip plate; 621. Primary lip; 63. Inner lip plate; 631. Secondary lip; 64. Inner skeleton; 65. Outer partition plate; 651. Outer pressure plate; 66. Inner partition plate; 661. Inner pressure plate. Detailed Implementation

[0036] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0037] like Figures 4-6 In existing technology, a support roller includes an axle, a bearing 1 whose inner ring is fixedly connected to the axle, and a support roller body 2 whose inner side is coaxially fixedly connected to the outer ring of the bearing 1. A sealing seat plate 3 is coaxially fixedly connected to one end of the axle. The sealing seat plate 3 is rotatably sealed to the inner side of one end of the support roller body 2, and a sealing structure is provided inside the sealing seat plate 3 to seal the bearing 1. Typically, this sealing structure only seals through a few sealing lips, making the path for mud and sand to enter the interior relatively simple. The sealing ability is relatively weak, and sealing failure is prone to occur, resulting in damage to the bearing 1.

[0038] To address the aforementioned issues, this utility model provides a support roller sealing structure, as detailed below.

[0039] Example 1

[0040] like Figures 1-3 A support roller sealing structure includes an axle and further includes:

[0041] Bearing 1, whose inner ring is coaxially fixedly connected to the wheel axle;

[0042] The support roller body 2 is coaxially fixedly connected to the outer ring of the bearing 1;

[0043] The sealing seat plate 3 is installed at one end of the inner hole of the support roller body 2. The sealing seat plate 3 has an inner sealing groove 31 facing the bearing 1 and the inner wall of the support roller body 2.

[0044] The outer sealing ring 4 is detachably connected to the inner wall of the support roller body 2 and is sealed to the outer wall of the other end of the sealing seat plate 3.

[0045] An intermediate sealing body 5 is provided and detachably connected to the support roller body 2. The intermediate sealing body 5 is sealed and fitted to the sealing seat plate 3. The intermediate sealing body 5 is close to the inner sealing groove 31 relative to the outer sealing ring 4.

[0046] The inner sealing body 6 fills the inner sealing groove 31.

[0047] The beneficial effect of this embodiment is that, on the contact path between the support roller body 2 and the sealing seat plate 3, an outer sealing ring 4, at least one intermediate sealing body 5 and an inner sealing body 6 are arranged sequentially from the inside to the outside to form at least a three-level sealing structure, so as to improve the sealing effect and improve the technical problem that the existing support roller sealing structure has weak sealing ability, resulting in a short service life of the support roller.

[0048] The support roller body 2 has an outer sealing groove 21 and at least one intermediate sealing groove 22. The outer sealing ring 4 can be made of rubber and is filled in the outer sealing groove 21, forming a primary sealing structure. The intermediate sealing body 5 is filled in the intermediate sealing groove 22, forming a secondary sealing structure.

[0049] The number of intermediate sealing bodies 5 can be one, two, or three; only one is shown in the figure.

[0050] It should be noted that support rollers are typically symmetrical in structure, consisting of two roller bodies. Sealing plates 3 are mounted on the outer sides of the two roller bodies, forming an external seal to protect the internal bearing 1. Figure 1 The diagram only shows a portion of the support roller's structure. Those skilled in the art can deduce the other portion of the support roller's structure from the diagram. The sealing structure of this other portion is the same as that of the portion shown in the diagram, and they have the same sealing structure.

[0051] Example 2

[0052] like Figure 2 and Figure 3 Based on Embodiment 1, the inner sealing body 6 includes an outer lip plate 61, an intermediate lip plate 62 fixedly connected to one end of the outer lip plate 61 near the bearing 1, and an inner lip plate 63 fixedly connected to one end of the intermediate lip plate 62 near the bearing 1. The other ends of the outer lip plate 61, the intermediate lip plate 62, and the inner lip plate 63 all abut against the groove wall of the inner sealing groove 31, and one side of the outer lip plate 61 abuts against the inner side of the support wheel body 2. The outer lip plate 61, the intermediate lip plate 62, and the inner lip plate 63 are arranged sequentially from the inner side of the support wheel body 2 toward the wheel axle.

[0053] The beneficial effect of adopting the preferred solution in the above embodiments is that when the mud and sand break through the intermediate sealing body 5 and further seep into the inner sealing body 6, the outer lip plate 61, the intermediate lip plate 62 and the inner lip plate 63, which are all in contact with the wall of the inner sealing groove 31, form a three-level sealing structure in sequence to block the mud and sand from entering. At the same time, the outer lip plate 61, the intermediate lip plate 62 and the inner lip plate 63 are fixedly connected in sequence at the end near the bearing 1, which forms a barrier against the mud and sand relative to the bearing 1, thereby improving the sealing effect.

[0054] The outer lip plate 61, the middle lip plate 62, and the inner lip plate 63 can all be made of rubber.

[0055] Example 3

[0056] like Figure 2 and Figure 3 Based on embodiments 1 and 2, the inner sealing body 6 also includes an inner skeleton 64, one end of which is filled in the outer lip plate 61, and the other end extends to the root of one end of the middle lip plate 62 and the inner lip plate 63.

[0057] The beneficial effect of adopting the preferred solution in the above embodiments is that the inner skeleton 64 simultaneously forms support for the outer lip plate 61, the middle lip plate 62 and the inner lip plate 63, thereby improving the sealing effect between the outer lip plate 61 and the groove wall of the inner sealing groove 31, and improving the isolation sealing effect formed by the three outer lip plates 61, the middle lip plate 62 and the inner lip plate 63 near the end of the bearing 1.

[0058] Overall, the internal skeleton 64 has an "L" shaped structure. Figure 2 One end of the plate is vertically positioned and fills the outer lip plate 61, while the other end extends laterally toward the direction of the wheel axle and fills the root of one end of the middle lip plate 62 and the inner lip plate 63.

[0059] Example 4

[0060] like Figure 2 and Figure 3 Based on embodiments 1-3, the inner sealing body 6 further includes an outer partition 65. One end of the outer partition 65 abuts against the other side of the outer lip plate 61 facing the middle lip plate 62, and the other end is bent and abuts against the groove wall of the inner sealing groove 31 opposite to the bearing. The other ends of the middle lip plate 62 and the inner lip plate 63 indirectly abut against the groove wall of the inner sealing groove 31 through the other end of the outer partition 65.

[0061] The beneficial effect of the preferred solution in the above embodiments is that one end of the outer partition 65 abuts against the outer lip plate 61, so that the outer lip plate 61 is guaranteed to be stable under the joint limiting action of the outer partition 65, the bearing 1, the side wall of the support roller body 2 and the groove wall of the inner sealing groove 31. When the mud and sand break through the intermediate sealing body 5 and further seep into the inner sealing body 6, a sealing path is formed between the outer partition 65 and the outer lip plate 61, and the mud and sand can further seep into the inner sealing body after breaking through the sealing path, thus improving the sealing effect.

[0062] Overall, the outer partition 65 has an "L" shaped structure. Figure 2 In the middle, one end is vertically set between the outer lip plate 61 and the middle lip plate 62, and the other end extends laterally towards the direction of the wheel axle and abuts against the groove wall of the inner sealing groove 31 opposite to the bearing.

[0063] Based on the above embodiment, an outer pressure plate 651 is fixedly connected to one end of the outer partition 65. The outer pressure plate 651 abuts against the outer lip plate 61 and the middle lip plate 62 to form a sealed cavity between the outer pressure plate 651, the outer lip plate 61 and the middle lip plate 62. When mud and sand break through the sealing path between the outer partition 65 and the outer lip plate 61, they can form a further seal through the sealed cavity to improve the sealing effect.

[0064] Example 5

[0065] like Figure 2 andFigure 3 Based on embodiments 1-4, a plurality of primary lips 621 are fixedly connected to the other end of the intermediate lip plate 62. Some of the primary lips 621 abut against one end of the outer partition plate 65, and the other primary lips 621 abut against the other end of the outer partition plate 65.

[0066] The beneficial effect of the preferred solution in the above embodiments is that a multi-level sealing structure is formed between each primary lip 621 and the outer partition 65. When mud and sand break through the sealing path formed between the outer partition 65 and the outer lip plate 61 at one end to further infiltrate, the mud and sand need to break through the multi-level sealing structure formed between each primary lip 621 and the outer partition 65 in order to further infiltrate, thereby further improving the sealing effect. At the same time, multiple sealing cavities are formed between the multiple primary lip 621, the outer partition 65 and the outer lip plate 61. When mud and sand infiltrate, they will fill the sealing cavity. After filling, the mud and sand itself will form a sealing effect, thereby improving the sealing effect.

[0067] The number of primary lip openings 621 can be two, three, four, or five, etc. In the figure, two are shown.

[0068] Example 6

[0069] like Figure 2 and Figure 3 Based on embodiments 1-5, the inner sealing body 6 further includes an inner partition 66. One end of the inner partition 66 abuts against the groove wall of the inner sealing groove 31 opposite to the inner side of the support wheel body 2, and the other end is bent and abuts against the groove wall of the inner sealing groove 31 opposite to the bearing. The other end of the inner lip plate 63 indirectly abuts against the groove wall of the inner sealing groove 31 through the inner partition 66.

[0070] The beneficial effect of the preferred solution in the above embodiments is that when the mud and sand break through to the space between the intermediate lip plate 62 and the inner lip plate 63 and further seep in, a sealing effect is formed between the abutting inner partition plate 66 and the inner lip plate 63, which prevents the mud and sand from further seeping in and improves the sealing effect.

[0071] Based on the above embodiment, the other end of the inner partition 66 is bent and abuts against the inner side of the other end of the outer partition 65.

[0072] Example 7

[0073] like Figure 2 and Figure 3 Based on embodiments 1-6, a plurality of secondary lips 631 are fixedly connected to the other end of the inner lip plate 63. Some of the secondary lips 631 abut against one end of the inner partition plate 66, and the other secondary lips 631 abut against the other end of the inner partition plate 66.

[0074] The beneficial effect of the preferred solution in the above embodiments is that a multi-level sealing structure is formed between each secondary lip 631 and the inner partition 66. When the mud and sand break through to the space between the intermediate lip plate 62 and the inner lip plate 63 and further infiltrate, the mud and sand need to break through the multi-level sealing structure formed between each secondary lip 631 and the inner partition 66 in order to further infiltrate, thereby further improving the sealing effect. At the same time, multiple sealing cavities are formed between the multiple secondary lips 631 and the inner partition 66. When the mud and sand infiltrate, they will fill the sealing cavity. After filling, the mud and sand itself will form a sealing effect, thereby improving the sealing effect.

[0075] The number of secondary lips 631 can be two, three, four or five, etc. In the figure, three secondary lips 631 are shown, two of which abut against one end of the inner partition 66 and the other abut against the other end of the inner partition 66.

[0076] Example 8

[0077] like Figure 2 and Figure 3 Based on embodiments 1-7, the other end of the inner partition 66 is bent and abuts against the side of the middle lip plate 62 facing the inner lip plate 63.

[0078] The beneficial effect of adopting the preferred solution in the above embodiments is that when the mud and sand break through the seal between the other end of the intermediate lip plate 62 and the wall of the inner sealing groove 31 and further seep in, the sealing cavity formed between the other end of the inner partition plate 66 and the intermediate lip plate 62 can block the mud and sand, thereby improving the sealing effect.

[0079] In this embodiment, the inner partition 66 is generally in an inverted "U" shape.

[0080] Based on the above embodiment, the other end of the inner partition 66 is fixedly connected to the inner pressure plate 661. The inner pressure plate 661 simultaneously abuts against the inner lip plate 63 and the intermediate lip plate 62 to form another sealing cavity between the inner pressure plate 661, the inner lip plate 63 and the intermediate lip plate 62. When mud and sand break through the sealing cavity formed between the other end of the inner partition 66 and the intermediate lip plate 62, a further seal can be formed through this other sealing cavity to improve the sealing effect.

[0081] Example 9

[0082] like Figure 2 and Figure 3 Based on embodiments 1-8, the intermediate sealing body 5 includes an intermediate sealing ring 51 and an intermediate skeleton 52. The intermediate sealing ring 51 is detachably connected to the support roller body 2 and abuts against the sealing seat plate 3. The intermediate skeleton 52 is filled inside the intermediate sealing ring 51.

[0083] The beneficial effect of adopting the preferred solution in the above embodiments is that the intermediate frame 52 forms a support for the intermediate sealing ring 51, thereby improving the sealing effect between the support roller body 2 and the sealing seat plate 3.

[0084] The intermediate sealing ring 51 can be made of rubber.

[0085] On the other hand, this utility model provides a tracked machine, as described below.

[0086] Example 10

[0087] This embodiment provides a tracked machine, including a support roller sealing structure as described in any one of embodiments 1-9.

[0088] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0089] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0090] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to 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 utility model according to the specific circumstances.

[0091] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0092] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," 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 the present invention. 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0093] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A support roller sealing structure, comprising a roller axle, characterized in that, Also includes: The bearing (1) has its inner ring coaxially fixedly connected to the wheel axle; The support roller body (2) is coaxially fixedly connected to the outer ring of the bearing (1); A sealing seat plate (3) is installed at one end of the inner hole of the support wheel body (2). The sealing seat plate (3) is provided with an inner sealing groove (31) facing the bearing (1) and the inner wall of the support wheel body (2). The outer sealing ring (4) is detachably connected to the inner wall of the support wheel body (2) and is sealed to the outer wall of the other end of the sealing seat plate (3); An intermediate sealing body (5) is provided with at least one and is detachably connected to the support roller body (2). The intermediate sealing body (5) is sealed to the sealing seat plate (3). The intermediate sealing body (5) is close to the inner sealing groove (31) relative to the outer sealing ring (4). An inner sealing body (6) fills the inner sealing groove (31).

2. The support roller sealing structure according to claim 1, characterized in that, The inner sealing body (6) includes an outer lip plate (61), an intermediate lip plate (62) fixedly connected to one end of the outer lip plate (61) near the bearing (1), and an inner lip plate (63) fixedly connected to one end of the intermediate lip plate (62) near the bearing (1). The other ends of the outer lip plate (61), the intermediate lip plate (62), and the inner lip plate (63) all abut against the groove wall of the inner sealing groove (31), and one side of the outer lip plate (61) abuts against the inner side of the support wheel body (2). The outer lip plate (61), the intermediate lip plate (62), and the inner lip plate (63) are arranged sequentially from the inner side of the support wheel body (2) toward the wheel axle.

3. The support roller sealing structure according to claim 2, characterized in that, The inner sealing body (6) also includes an inner skeleton (64), one end of which is filled in the outer lip plate (61), and the other end extends to the root of one end of the middle lip plate (62) and the inner lip plate (63).

4. The support roller sealing structure according to claim 2, characterized in that, The inner sealing body (6) also includes an outer partition (65), one end of which abuts against the outer lip plate (61) on the other side facing the middle lip plate (62), and the other end is bent and abuts against the groove wall of the inner sealing groove (31) opposite to the bearing. The other ends of the middle lip plate (62) and the inner lip plate (63) indirectly abut against the groove wall of the inner sealing groove (31) through the other end of the outer partition (65).

5. The support roller sealing structure according to claim 4, characterized in that, The other end of the intermediate lip plate (62) is fixedly connected to a plurality of primary lips (621), some of the primary lips (621) abut against one end of the outer partition plate (65), and the other primary lips (621) abut against the other end of the outer partition plate (65).

6. The support roller sealing structure according to claim 2, characterized in that, The inner sealing body (6) also includes an inner partition (66), one end of which abuts against the inner sealing groove (31) and the inner wall of the support wheel body (2), and the other end is bent and abuts against the inner sealing groove (31) and the inner wall of the bearing. The other end of the inner lip plate (63) abuts indirectly against the inner sealing groove (31) through the inner partition (66).

7. The support roller sealing structure according to claim 6, characterized in that, The other end of the inner lip plate (63) is fixedly connected to a plurality of secondary lips (631), some of the secondary lips (631) abut against one end of the inner partition plate (66), and the other secondary lips (631) abut against the other end of the inner partition plate (66).

8. The support roller sealing structure according to claim 6, characterized in that, The other end of the inner partition (66) is bent and abuts against the side of the intermediate lip plate (62) facing the inner lip plate (63).

9. A support roller sealing structure according to any one of claims 1-8, characterized in that, The intermediate sealing body (5) includes an intermediate sealing ring (51) and an intermediate skeleton (52). The intermediate sealing ring (51) is detachably connected to the support roller body (2) and abuts against the sealing seat plate (3). The intermediate skeleton (52) is filled inside the intermediate sealing ring (51).

10. A tracked machine, characterized in that, Includes a support roller sealing structure as described in any one of claims 1-9.

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