Novel thrust wheel sealing structure

Abstract

The utility model relates to the technical field of thrust wheels, in particular to a novel thrust wheel sealing structure which comprises a shaft body, the shaft body is sleeved with a wheel body in a rotating structure mode, end covers are arranged on the two sides of the wheel body in a fixed structure mode, the left side and the right side of the shaft body are sleeved with the two end covers respectively, and inner sleeves are arranged on the inner sides of the end covers in a fixed structure mode. The inner sleeve is arranged outside the shaft body, a metal wear-resisting ring A is arranged between the shaft body and the inner sleeve, an outer caulking groove is formed in the outer end face of the metal wear-resisting ring A, a sealing ring A is arranged in the outer caulking groove, and the outer circumferential face of the sealing ring A makes contact with the inner wall of the inner sleeve; the shaft body on the inner side of the metal wear-resistant ring A is sleeved with a metal wear-resistant ring B, the metal wear-resistant ring B is sleeved with the inner sleeve, and an embedded groove is formed in the inner end face of the metal wear-resistant ring B; the sealing ring B is arranged in the embedded groove, the peripheral face of the sealing ring B makes contact with the outer wall of the shaft body, the structure is simple, and assembling is convenient.

Description

Technical field:

[0001] The present application relates to the technical field of track rollers, and in particular to a novel track roller sealing structure. Background technology:

[0002] The track roller is composed of a wheel body, a shaft, a sleeve or bearing, a sealing assembly, a cover and other related parts. There is liquid lubricating oil inside the track roller, which mainly forms an oil film between the sleeve and the shaft when the wheel body rotates, playing a role in lubrication and bearing. The sealing assembly mainly prevents the leakage of lubricating oil and prevents foreign matter from entering.

[0003] There are two types of sealing assemblies available:

[0004] One is the skeleton oil seal, which has the advantages of simple sealing structure and simple installation. However, the disadvantage is that the skeleton oil seal is easily dislodged due to the axial force of the wheel body during the use of the supporting wheel, and the sealing effect is poor. In addition, the seal is directly exposed to the working environment, and its ability to prevent foreign matter such as mud and water from entering is poor, and its adaptability to working conditions is poor.

[0005] The other is the floating oil seal. The advantages of the floating oil seal are strong adaptability to working conditions and good sealing. The disadvantages are that the floating seal groove structure is complex and the processing requirements are high. At the same time, the assembly requirements are high. Once the assembly is not in place, it is easy to cause oil leakage and seal failure.

[0006] The above two sealing structures cannot meet the needs of simple assembly and good sealing effect under poor working conditions. Utility model content:

[0007] In order to solve the above technical problems, the utility model provides a new type of roller sealing structure, which solves the technical problems of difficult assembly and poor sealing effect. In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0008] A novel roller sealing structure includes:

[0009] An axle body, on which a wheel body is sleeved in a rotating structure;

[0010] End covers, two end covers are respectively mounted on the left and right sides of the shaft body, and the end covers are connected to the wheel body in a fixed structure;

[0011] An inner sleeve, which is arranged outside the shaft body and connected to the end cover in a fixed structure manner;

[0012] A metal wear-resistant ring A is arranged between the shaft body and the inner sleeve, and an outer end surface of the metal wear-resistant ring A is provided with an outer embedding groove;

[0013] The sealing ring A is arranged in the outer groove, and the outer peripheral surface of the sealing ring A contacts the inner wall of the inner sleeve;

[0014] The metal wear-resistant ring B is sleeved on the shaft body inside the metal wear-resistant ring A, and an inner end surface of the metal wear-resistant ring B is provided with an embedded groove;

[0015] The sealing ring B is arranged in the embedded groove, and the outer peripheral surface of the sealing ring B contacts the outer wall of the shaft body.

[0016] Further, the shaft body includes a middle cylindrical section, bearing mounting sections are arranged at both ends of the middle cylindrical section in a fixed structure manner, a truncated cone gradient section is fixedly arranged on the outer end surface of the bearing mounting section, an outer cylindrical section is fixedly arranged on the outer end surface of the truncated cone gradient section, and the diameters of the middle cylindrical section, the bearing mounting section, the truncated cone gradient section and the outer cylindrical section are arranged in a gradually decreasing order according to the above sequence;

[0017] The sealing ring A is sleeved outside the outer cylindrical section;

[0018] The sealing ring B is sleeved on the outside of the frustum gradient section.

[0019] Furthermore, a bearing supporting the wheel body is sleeved outside the bearing mounting section.

[0020] Furthermore, a first groove is provided on the inner wall of the wheel body outside the bearing, and a first retaining ring is provided in the first groove.

[0021] Furthermore, a second slot is formed in the wheel body outside the end cover, and a second retaining ring is arranged in the second slot.

[0022] The beneficial effects of the utility model are as follows: the sealing ring A and the sealing ring B are respectively installed on the metal wear-resistant ring A and the metal wear-resistant ring B, and then installed inside the inner sleeve, with a simple structure and convenient assembly with the shaft body; at the same time, the elastic force of the sealing ring is used to ensure the close contact of the two wear-resistant rings to form a surface seal, and the structural space required for the seal is small. While improving the sealing effect, it can also meet the need for relative rotation of the two metal wear-resistant rings, thereby realizing the relative rotation of the wheel body and the shaft. Description of the drawings:

[0023] Figure 1 It is a schematic diagram of the structure of the utility model.

[0024] In the figure:

[0025] 1. Wheel body, 2. End cover, 3. Inner sleeve, 4. Metal wear-resistant ring A, 5. Sealing ring A, 6. Metal wear-resistant ring B, 7. Sealing ring B, 8. Middle cylindrical section, 9. Bearing installation section, 10. Cone gradient section, 11. Outer cylindrical section, 12. First retaining ring, 13. Second retaining ring, 14. Bearing. Specific implementation method:

[0026] In order to make the purpose, technical scheme and advantages of the implementation of the utility model clearer, the utility model will now be further described in detail with reference to the accompanying drawings and the following examples so that the public can better understand the implementation method of the utility model. The specific implementation scheme of the utility model is as follows:

[0027] A novel supporting wheel sealing structure comprises a shaft body, a wheel body 1 is sleeved on the outside of the shaft body in a rotating structure manner, end covers 2 are arranged on both sides of the wheel body 1 in a fixed structure manner, the two end covers 2 are sleeved on the left and right sides of the shaft body respectively, an inner sleeve 3 is arranged on the inner side of the end cover 2 in a fixed structure manner, the inner sleeve 3 is arranged outside the shaft body, a metal wear-resistant ring A4 is arranged between the shaft body and the inner sleeve 3, an outer embedded groove is formed on the outer end face of the metal wear-resistant ring A4, a sealing ring A5 is arranged in the outer embedded groove, and the outer peripheral surface of the sealing ring A5 contacts the inner wall of the inner sleeve 3; a metal wear-resistant ring B6 is sleeved on the shaft body inside the metal wear-resistant ring A4, the metal wear-resistant ring B6 is sleeved in the inner sleeve 3, and the inner end face of the metal wear-resistant ring B6 is provided with an inner embedded groove; a sealing ring B7 is arranged in the inner embedded groove, and the outer peripheral surface of the sealing ring B7 contacts the outer wall of the shaft body. The sealing ring A5 and the sealing ring B7 are respectively installed on the metal wear-resistant ring A4 and the metal wear-resistant ring B6, and then installed inside the inner sleeve 3. The structure is simple and convenient to assemble with the shaft body. At the same time, the elastic force of the sealing ring is used to ensure the close contact of the two wear-resistant rings to form a surface seal. The structural space required for the seal is small, which improves the sealing effect and can also meet the need for relative rotation of the two metal wear-resistant rings, thereby realizing the relative rotation of the wheel body and the shaft.

[0028] Specifically, the shaft body includes a middle cylindrical section 8, at both ends of which are provided with bearing mounting sections 9 in a fixed structure manner, the outer end surface of the bearing mounting section 9 is fixedly provided with a truncated cone gradient section 10, the outer end surface of the truncated cone gradient section 10 is fixedly provided with an outer cylindrical section 11, and the diameters of the middle cylindrical section 8, the bearing mounting section 9, the truncated cone gradient section 10 and the outer cylindrical section 11 are arranged in a gradually decreasing order according to the above sequence, so as to utilize this structure to limit the bearing 14 and the metal wear-resistant ring B6, the sealing ring A5 is sleeved on the outside of the outer cylindrical section 11; the sealing ring B7 is sleeved on the outside of the truncated cone gradient section 10, and the elastic force of the sealing ring is utilized to ensure the close contact of the two wear-resistant rings, so as to form a surface seal and improve the sealing effect.

[0029] It should be noted that a bearing 14 for supporting the wheel body 1 is sleeved on the outside of the bearing installation section 9, so that the rotation of the shaft body and the wheel body 1 is smoother.

[0030] It should be explained that a first groove is provided on the inner wall of the wheel body 1 outside the bearing, and a first retaining ring 12 is provided in the first groove to prevent the bearing from moving.

[0031] The wheel body 1 outside the end cover 2 is provided with a second slot, and a second retaining ring 13 is arranged in the second slot to prevent the end cover from being opened.

[0032] The working principle and working process of the utility model are as follows:

[0033] During installation, first install the shaft body inside the wheel body 1, then install the bearing 14 in the bearing installation section 9, and install the first retaining ring 12 in the first slot;

[0034] Install the sealing ring A5 inside the outer embedded groove of the metal wear-resistant ring A4, then install the metal wear-resistant ring A4 inside the inner sleeve 3, install the metal wear-resistant ring B6 inside the inner sleeve 3 outside the metal wear-resistant ring A4, install the sealing ring B7 inside the inner embedded groove, then hold the end cover 2, put the metal wear-resistant ring B6 and the metal wear-resistant ring A4 on the shaft body, and press the sealing ring B7 on the outside of the truncated cone gradient section 10. Since the truncated cone gradient section 10 has one end larger than the other end, the sealing ring B7 will move to the smaller end, thereby pressing the metal wear-resistant ring B6 against one side of the metal wear-resistant ring A4, and finally install the second retaining ring 13 in the second slot, fix the end cover, and complete the assembly work.

[0035] In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "left", "right", "front", "back", "lower left", "upper right", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are 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 operate in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Although the present invention has been described according to a limited number of embodiments, those skilled in the art, with the benefit of the above description, should understand that other embodiments can be conceived within the scope of the present invention described thereby.

Claims

1. A new type of roller sealing structure, characterized in that: include: An axle body, on which a wheel body (1) is sleeved in a rotating structure; End covers (2), the two end covers (2) are respectively sleeved on the left and right sides of the shaft body, and the end covers (2) are connected to the wheel body (1) in a fixed structure manner; An inner sleeve (3), the inner sleeve (3) is arranged outside the shaft body and connected to the end cover (2) in a fixed structure manner; A metal wear-resistant ring A (4), which is arranged between the shaft body and the inner sleeve (3), and an outer end surface of the metal wear-resistant ring A (4) is provided with an outer embedding groove; A sealing ring A (5), the sealing ring A (5) is arranged in the outer embedded groove, and the outer peripheral surface of the sealing ring A (5) contacts the inner wall of the inner sleeve (3); A metal wear-resistant ring B (6), the metal wear-resistant ring B (6) is sleeved on the shaft body inside the metal wear-resistant ring A (4), and an inner end surface of the metal wear-resistant ring B (6) is provided with an embedded groove; The sealing ring B (7) is arranged in the embedded groove, and the outer peripheral surface of the sealing ring B (7) contacts the outer wall of the shaft body.

2. The new type of roller sealing structure according to claim 1 is characterized in that: The shaft body comprises a middle cylindrical section (8), bearing mounting sections (9) are arranged at both ends of the middle cylindrical section (8) in a fixed structure manner, a truncated cone gradient section (10) is fixedly arranged on the outer end surface of the bearing mounting section (9), an outer cylindrical section (11) is fixedly arranged on the outer end surface of the truncated cone gradient section (10), and the diameters of the middle cylindrical section (8), the bearing mounting section (9), the truncated cone gradient section (10) and the outer cylindrical section (11) are arranged in a gradually decreasing order according to the above sequence; The sealing ring A (5) is sleeved on the outside of the outer cylindrical section (11); The sealing ring B (7) is sleeved on the outside of the truncated cone gradient section (10).

3. The new type of roller sealing structure according to claim 2 is characterized in that: The bearing installation section (9) is externally sleeved with a bearing (14) for supporting the wheel body (1).

4. The new type of roller sealing structure according to claim 3 is characterized in that: The inner wall of the wheel body (1) outside the bearing is provided with a first clamping groove, and a first retaining ring (12) is provided in the first clamping groove.

5. A new type of roller sealing structure according to claim 1 or 4, characterized in that: The wheel body (1) outside the end cover (2) is provided with a second clamping groove, and a second retaining ring (13) is arranged in the second clamping groove.

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