Novel combined sealing structure

Abstract

The utility model relates to the field of bearing seats, in particular to a novel combined sealing structure, which comprises a hub shaft, a ball bearing, a bearing seat, an outer end cover, an inner end cover and a hub shaft sleeve, the outer end cover and the inner end cover are respectively and fixedly arranged on two end faces of the bearing seat, the ball bearing is arranged in the bearing seat, the hub shaft sleeve is sleeved on the hub shaft, and the hub shaft sleeve is sleeved on the bearing seat. The wheel hub shaft is fixedly connected with an inner ring of the ball bearing, the observation plate is arranged between the outer end cover and the bearing seat and is transparent, an observation hole is formed in the outer end cover in a penetrating mode, the framework sealing piece is arranged on the wheel hub shaft sleeve in a sleeving mode, and the outer wall of the framework sealing piece is in contact with the inner end cover. Through the arrangement of the observation plate and the observation hole, the oil level in the bearing seat can be observed through the observation plate, so that the condition of oil can be known in time, and the condition that a bearing or a rotating shaft is damaged due to the fact that the oil is not replaced or added in time is avoided.

Description

Technical Field

[0001] The utility model relates to the field of bearing seats, in particular to a novel combined sealing structure. Background Art

[0002] The function of the semi-track wheel hub bearing seat end cover is generally to isolate the internal transmission components of the bearing seat that require lubrication from the external environment, preventing lubricating oil leakage. Currently, the outer cover plate is mostly a circular cover plate that is directly installed on the bearing seat to ensure the sealing of the bearing seat.

[0003] Currently, during use, the seals come into direct contact with muddy water. Because the cover obstructs the view, the lubricant inside the bearing seat and the condition of the transmission components cannot be clearly observed in real time. This can lead to seal aging after long-term use. Furthermore, wear on the contact surface between the shaft and the seal can cause oil leakage, or muddy water can enter, leading to lubricant failure. This can prevent timely detection of damage to the internal transmission components. Therefore, it is necessary to improve this structure to overcome the above-mentioned drawbacks. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a new type of combined sealing structure. This utility model is achieved through the following technical solutions:

[0005] A new type of combined sealing structure includes a hub shaft, a ball bearing, a bearing seat, an outer end cover, an inner end cover, and a hub shaft sleeve, wherein the outer end cover and the inner end cover are respectively fixedly arranged on the two end surfaces of the bearing seat, the ball bearing is arranged in the bearing seat, the hub shaft sleeve is sleeved on the hub shaft, and the hub shaft is fixedly connected to the inner ring of the ball bearing, and also includes an observation plate and a skeleton seal, the observation plate is arranged between the outer end cover and the bearing seat, and the observation plate is transparent, an observation hole is provided through the outer end cover, the skeleton seal is sleeved on the hub shaft sleeve, and the outer wall of the skeleton seal is in contact with the inner end cover.

[0006] In the above technical solution: the hub shaft is a rotating body, and the ball bearing is used to support the rotation of the hub shaft; the bearing seat is used to set the ball bearing; the outer end cover and the inner end cover are used to fix the position of the ball bearing; the hub shaft sleeve is used to limit the axial movement of the ball bearing; the observation plate is used to observe the oil level of the lubricating oil inside the bearing seat; the observation hole is used to prevent the outer end cover from covering the observation plate, resulting in the inability to observe; the skeleton seal has a sealing effect.

[0007] A further configuration of the present invention is that an oil drain hole is further provided on the observation plate, and the position of the oil drain hole corresponds to the position of the observation hole.

[0008] In the above technical solution: the oil drain hole is used to add oil to the inside of the bearing group; the position of the oil drain hole corresponds to the position of the observation hole, so that the outer end cover will not block the oil drain hole.

[0009] A further configuration of the utility model is that it further comprises a plug, which is detachably fixed in the oil drain hole.

[0010] In the above technical solution: the plug is used to block the oil drain hole when oil is not being injected, thereby preventing the oil inside the bearing seat from leaking out.

[0011] The utility model is further configured to include a dust ring, which is sleeved on the hub sleeve, and the outer wall of the dust ring is in contact with the inner end cover, and one side of the dust ring is also in contact with the skeleton seal.

[0012] In the above technical solution: the dust ring is used to prevent dust from reaching the position of the skeleton seal and further improve the sealing effect.

[0013] The present invention is further configured as follows: a radial sealing groove is further provided on the hub sleeve, a positioning convex ring is provided on the dust ring, and the radial sealing groove is clamped with the positioning convex ring.

[0014] In the above technical solution, the provision of the radial sealing groove and the positioning convex ring enables the dust ring to move radially, thereby improving the sealing effect.

[0015] The present invention is further configured to include a first sealing gasket and a second sealing gasket, wherein the first sealing gasket is arranged between the observation plate and the outer end cover, and the second sealing gasket is arranged between the bearing seat and the inner end cover.

[0016] In the above technical solution: the first sealing gasket and the second sealing gasket are used to further improve the sealing effect and prevent oil from leaking from the bearing seat.

[0017] The utility model discloses a new type of combined sealing structure. Compared with the prior art:

[0018] 1. The utility model provides an observation plate and an observation hole, so that the oil level inside the bearing seat can be observed through the transparent observation plate, so that the amount of oil and the quality of the oil can be understood in a timely manner, thereby avoiding damage to the bearing or rotating shaft due to failure to replace or add oil in time;

[0019] 2. The utility model also provides an oil drain hole and a plug, so that oil can be added conveniently;

[0020] 3. The present invention also provides a radial sealing groove on the hub sleeve, so that the dust ring can move with it, thereby avoiding the gap caused by the displacement of the dust ring due to the radial movement of the shaft body, and improving the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of the utility model;

[0022] Figure 2 This is an exploded view of the present utility model (excluding the hub shaft);

[0023] Figure 3 It is a cross-sectional view of the utility model;

[0024] Figure 4 It is a partial enlarged view of point A of the present utility model.

[0025] The corresponding component names represented by the numbers and letters in the figure are: 10-wheel hub shaft; 20-ball bearing; 30-bearing seat; 40-outer end cover; 401-observation hole; 50-inner end cover; 60-wheel hub sleeve; 601-radial sealing groove; 70-observation plate; 701-oil drain hole; 80-skeleton seal; 90-plug; 110-dust ring; 1101-locating convex ring; 120-first sealing gasket; 130-second sealing gasket. DETAILED DESCRIPTION

[0026] The following further illustrates the technical solution of the present invention with reference to the accompanying drawings and specific embodiments. The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images, and should not be construed as limiting this patent. To better illustrate the embodiments of the present invention, some components in the accompanying drawings may be omitted, enlarged, or reduced, and do not represent the dimensions of the actual product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted from the accompanying drawings.

[0027] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0028] like Figure 1-4As shown, the utility model proposes a new type of combined sealing structure, including a hub shaft 10, a ball bearing 20, a bearing seat 30, an outer end cover 40, an inner end cover 50, and a hub shaft sleeve 60, wherein the outer end cover 40 and the inner end cover 50 are respectively fixedly arranged on the two end surfaces of the bearing seat 30, the ball bearing 20 is arranged in the bearing seat 30, the hub shaft sleeve 60 is sleeved on the hub shaft 10, and the hub shaft 10 is fixedly connected to the inner ring of the ball bearing 20, and also includes an observation plate 70 and a skeleton seal 80, the observation plate 70 is arranged between the outer end cover 40 and the bearing seat 30, and the observation plate 70 is transparent, the outer end cover 40 is provided with an observation hole 401, the skeleton seal 80 is sleeved on the hub shaft sleeve 60, and the outer wall of the skeleton seal 80 is in contact with the inner end cover 50. Among them, the inner end cover 50 is annular; the hub shaft 10 is a stepped shaft; the hub shaft sleeve 60 is interference fit with the hub shaft 10, and the hub shaft sleeve 60 is provided with a flange portion, and the flange portion is in contact with the step of the hub shaft 10, thereby realizing the positioning of the hub shaft sleeve 60; the observation plate 70 and the diameter are consistent with the outer diameter of the outer end cover 40; the diameter of the inner end cover 50 is consistent with the diameter of the outer end cover 40; the outer ring of the roller bearing is fixedly connected to the bearing seat 30; the skeleton seal 80 is elastic; preferably, the observation hole 401 is coaxially arranged with the outer end cover 40.

[0029] like Figure 1-4 As shown, the present invention proposes a novel combined sealing structure, wherein the observation plate 70 is further provided with an oil drain hole 701, the position of the oil drain hole 701 corresponding to the position of the observation hole 401. The diameter of the oil drain hole 701 is smaller than the diameter of the observation hole 401.

[0030] like Figure 1-4 As shown, the novel combined sealing structure proposed by the present invention further includes a plug 90, which is detachably fixed in the oil drain hole 701. The plug 90 is elastic.

[0031] like Figure 1-4 As shown, the novel combined sealing structure proposed in the present invention further includes a dust ring 110. The dust ring 110 is sleeved on the hub sleeve 60, and the outer wall of the dust ring 110 maintains contact with the inner end cover 50. One side of the dust ring 110 also maintains contact with the skeleton seal 80. The dust ring 110 is made of an elastic material, such as rubber and polyurethane.

[0032] like Figure 1-4As shown, the novel combined sealing structure proposed in the present invention further includes a first sealing gasket 120 and a second sealing gasket 130. The first sealing gasket 120 is disposed between the observation plate 70 and the outer end cover 40, and the second sealing gasket 130 is disposed between the bearing seat 30 and the inner end cover 50. The first sealing gasket 120 is annular, and its outer diameter is consistent with that of the observation plate 70, and its inner diameter is consistent with that of the observation hole 401. The second sealing gasket 130 has an outer diameter consistent with that of the inner end cover 50, and its inner diameter is consistent with that of the inner end cover 50.

[0033] like Figure 1-4 As shown, the present invention proposes a new type of combined sealing structure, wherein the hub sleeve 60 is further provided with a radial sealing groove 601 , and the dust ring 110 is provided with a positioning convex ring 1101 , and the radial sealing groove 601 is snap-fitted with the positioning convex ring 1101 .

[0034] The working principle of this utility model is:

[0035] a) When the hub shaft rotates, the bearing seat is fixed horizontally;

[0036] b) Observe the interior of the bearing seat through the transparent observation plate;

[0037] c) Observe the quality of the oil;

[0038] d) When the hub shaft stops rotating,

[0039] e) Observe the oil level inside the bearing seat through the observation panel;

[0040] f) Determine whether oil filling or oil change is needed based on the oil level and oil quality;

[0041] g) When oiling is required;

[0042] h) Fill the bearing seat with oil through the oil filling hole provided in the bearing seat;

[0043] i) When oil change is required;

[0044] j) Remove the plug, drain the old oil through the oil drain hole, and then fill the oil through the oil filling hole.

[0045] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited to them. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.

[0046] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

Claims

1. A novel combined sealing structure, comprising a hub shaft (10), a ball bearing (20), a bearing seat (30), an outer end cover (40), an inner end cover (50), and a hub shaft sleeve (60), wherein the outer end cover (40) and the inner end cover (50) are respectively fixedly arranged on the two end surfaces of the bearing seat (30), the ball bearing (20) is arranged in the bearing seat (30), the hub shaft sleeve (60) is sleeved on the hub shaft (10), and the hub shaft (10) is fixedly connected to the inner ring of the ball bearing (20), characterized in that: The invention also includes an observation plate (70) and a skeleton seal (80), wherein the observation plate (70) is arranged between the outer end cover (40) and the bearing seat (30), and the observation plate (70) is transparent. The outer end cover (40) is provided with an observation hole (401) therethrough, and the skeleton seal (80) is sleeved on the hub sleeve (60), and the outer wall of the skeleton seal (80) is in contact with the inner end cover (50).

2. A novel combined sealing structure according to claim 1, characterized in that: The observation plate (70) is further provided with an oil drain hole (701), and the position of the oil drain hole (701) corresponds to the position of the observation hole (401).

3. A novel combined sealing structure according to claim 2, characterized in that: It also includes a plug (90), which is detachably fixed in the oil drain hole (701).

4. A novel combined sealing structure according to claim 1 or 3, characterized in that: It also includes a dust ring (110), which is sleeved on the hub sleeve (60), and the outer wall of the dust ring (110) is in contact with the inner end cover (50), and one side of the dust ring (110) is in contact with the skeleton seal (80).

5. A novel combined sealing structure according to claim 4, characterized in that: The hub sleeve (60) is further provided with a radial sealing groove (601), and the dustproof ring (110) is provided with a positioning convex ring (1101), and the radial sealing groove (601) is clamped with the positioning convex ring (1101).

6. A novel combined sealing structure according to claim 5, characterized in that: The invention also includes a first sealing gasket (120) and a second sealing gasket (130), wherein the first sealing gasket (120) is arranged between the observation plate (70) and the outer end cover (40), and the second sealing gasket (130) is arranged between the bearing seat (30) and the inner end cover (50).

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