Heavy duty support suspension bearing

Abstract

This utility model discloses a heavy-duty support suspension bearing, including an outer bushing, a central shaft, two bushing bearings, a bearing cover plate, and a fastening nut. The outer bushing is hollow inside and open at both ends. The central shaft is inserted into the outer bushing and rotatably connected to it via the two bushing bearings. The bearing cover plate is fitted onto the central shaft and positioned outside the bushing bearings. One end of the bearing cover plate is fixed to the central shaft, while the other end is fixed to the central shaft via a fastening nut. This utility model has a simple structure, improves the installation stability and rotational flexibility of the support shaft, and effectively enhances the load-bearing capacity of the overall independent suspension device and the vehicle.

Description

Technical Field

[0001] This utility model relates to the field of independent suspension technology, specifically to a heavy-duty support suspension bearing. Background Technology

[0002] The suspension system of a semi-trailer, like the engine and transmission, is one of the three major components of a vehicle. Common suspension systems can be divided into independent and non-independent suspension systems. A non-independent suspension system has a rigid axle connecting the left and right wheels, meaning the two wheels are not independent of each other. An independent suspension system does not have a rigid axle connecting the left and right wheels, so the two wheels do not interfere with each other. Some existing trailers require a lower load-bearing surface to increase cargo height, and due to the low cargo floor, independent suspension systems are often used. In existing independent suspension systems, the end of the support guide plate furthest from one half-axle is rotatably connected to the vehicle's suspension bracket, while the other side is connected to the trailer frame via a hydraulic cylinder and shock absorber spring. The existing axle connection to the vehicle's suspension bracket often uses a bearing seat rotatably connected, with the bearing seat fixed to the support axle using bolts and cover plates. This design has a relatively light overall load-bearing capacity. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of traditional support bearings in terms of low load-bearing capacity in the prior art, and to provide a heavy-duty support suspension bearing.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a heavy-duty support suspension bearing, including an outer bushing, a central shaft, two sleeve bearings, a bearing cover plate, and a fastening nut. The outer bushing is hollow inside and open at both ends. The central shaft is inserted into the interior of the outer bushing and is rotatably connected to it through the two sleeve bearings. The bearing cover plate is sleeved on the central shaft and placed outside the sleeve bearings. One end of the bearing cover plate is fixed to the central shaft by limiting, and the other end of the bearing cover plate is fixed to the central shaft by a fastening nut.

[0005] Furthermore, the internal space of the outer bushing is a central shaft cavity, and both ends of the central shaft cavity are stepped, with the diameter gradually increasing from the inside to the outside, forming a bearing mounting cavity and an end cover mounting cavity in sequence.

[0006] Furthermore, the central shaft is large at one end and small at the other, and is a multi-section boss-shaped shaft. From the small end to the large end, it consists of a threaded section, a first bearing assembly section, a main body section, a second bearing assembly section, and a support connection section. The threaded section has an external thread fixed on its circumferential outer wall. The first and second bearing assembly sections are each fitted with a matching bearing and a bearing cover plate. An oil injection gap is left between the main body section and the central shaft cavity.

[0007] Furthermore, a limiting ring protrusion is provided between the aforementioned second bearing assembly section and the support connection section.

[0008] Furthermore, the bearing cover plate is in the shape of a cylindrical boss, with a coaxial fitting hole at its center; a sealing ring is fitted between the bearing cover plate and the aforementioned fitted bearing.

[0009] Furthermore, a fixed support is fixedly installed on the outer side wall of the outer bushing, integrally formed therewith, and a connection hole is provided on the top plate of the fixed support.

[0010] Furthermore, the outer side wall of the outer bushing is provided with an oil injection nozzle that communicates with the aforementioned oil injection gap.

[0011] Furthermore, there are two fastening nuts, which are threaded onto the threaded section of the central shaft, and a washer is clamped between the two fastening nuts.

[0012] Furthermore, the bearing assembly is a spherical bearing with an inner bushing that has a hemispherical structure.

[0013] Furthermore, an independent suspension bracket is connected and installed on the large end side of the central shaft.

[0014] Compared with the prior art, the present invention has the following advantages: The present invention has a simple structure, improves the installation stability and rotation flexibility of the support shaft, and can effectively improve the load-bearing capacity of the overall independent suspension device and the vehicle. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a longitudinal center sectional view of the present invention;

[0017] Figure 3 This is an isometric view of the left end of the outer bushing in this utility model;

[0018] Figure 4 This is an isometric view of the right end of the outer bushing in this utility model;

[0019] Figure 5 This is a schematic diagram of the central shaft in this utility model;

[0020] In the diagram: 1. Outer bushing; 2. Central shaft; 3-1. First bearing set; 3-2. Second bearing set; 4-1. First bearing cover plate; 4-2. Second bearing cover plate; 5. Fastening nut; 6. Washer; 7. Fixed support; 8. Oil injection gap; 9. Sealing ring; 10. Oil injection nozzle; 11. First bearing mounting cavity; 12. First end cover mounting cavity; 13. Second bearing mounting cavity; 14. Second end cover mounting cavity; 21. Threaded section; 22. First bearing assembly section; 23. Main body section; 24. Second bearing assembly section; 25. Support connection section; 26. Limiting ring protrusion. Detailed Implementation

[0021] It should be noted that in the description of this utility model, terms such as "upper", "lower", "left", "right", "coaxial", "longitudinal", "center", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are only used to facilitate the description of the structural relationship between the components in this utility model and do not specifically mean that any component in this utility model must have a specific orientation or be constructed and operated in a specific orientation. They should not be construed as limitations on this utility model.

[0022] Furthermore, in utility models, descriptions such as "first" and "second" are for descriptive purposes only and do not specifically refer to any order or sequence, nor are they intended to limit the utility model. They are merely used to distinguish components or operations described with the same technical terms and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings:

[0025] like Figure 1 and Figure 2 As shown, a heavy-duty support suspension bearing includes an outer bushing 1, a central shaft 2, two sleeve bearings, two bearing cover plates, and a fastening nut 5. The outer bushing 1 is hollow inside and open at both ends, forming a central shaft cavity that extends transversely through its length. Figure 3 and Figure 4As shown, the inner side of the left end of the central shaft cavity is provided with a first bearing mounting cavity 11 and a first end cap mounting cavity 12, whose diameters increase sequentially from the inside to the outside, arranged in a stepped manner. Similarly, the inner side of the right end of the central shaft cavity is provided with a second bearing mounting cavity 13 and a second end cap mounting cavity 14, whose diameters increase sequentially from the inside to the outside, also arranged in a stepped manner. Furthermore, the diameter of the second bearing mounting cavity 13 is larger than that of the first bearing mounting cavity 11, and the diameter of the second end cap mounting cavity 14 is larger than that of the first end cap mounting cavity 12. The central shaft 2 is coaxially inserted into the central shaft cavity of the outer bushing 1 and is rotatably and fixedly connected to it via two bushing bearings. Each bushing bearing has a matching bearing cover plate on its outer side. Figure 5 As shown, the central shaft 2 is large at one end and small at the other, and is a multi-segment stepped boss shaft. From its small end to its large end, the central shaft 2 consists of a threaded section 21, a first bearing assembly section 22, a main body section 23, a second bearing assembly section 24, and a support connection section 25. The threaded section 21 has external threads on its circumferential outer wall. The first bearing assembly section 22 and the second bearing assembly section 24 are used for coaxially mounting the bearing and bearing cover plate. The first bearing assembly section 22 coaxially mounts the first bearing 3-1 and the first bearing cover plate 4-1. The first bearing 3-1 is located inside the first bearing cover plate 4-1 and is a spherical bearing. Its inner bearing is hemispherical with the spherical surface facing outwards, and is fixed to the central shaft 2. Its outer bearing is interference-fitted to the outer bushing 1. The first bearing is installed in the bearing mounting cavity 11. The second bearing assembly section 24 is coaxially fitted with the second bearing 3-2 and the second bearing cover plate 4-2. The second bearing 3-2 is located inside the second bearing cover plate 4-2 and is also a spherical bearing. Its inner bearing is hemispherical and is fixedly mounted on the central shaft 2 with the spherical surface facing outward. Its outer bearing is interference-fitted into the second bearing mounting cavity 13 of the outer bushing 1. The central shaft 2 is rotatably mounted inside the outer bushing 1 through the two bearings, so that there is an oil injection gap 8 between the main body section 23 of the central shaft 2 and the inner side of the outer bushing 1 to ensure smooth rotation between the two. Correspondingly, an integrally formed oil injection nozzle 10 is fixed on the outer side wall of the outer bushing 1, which is connected to the oil injection gap 8 and can inject lubricating oil. The support connection section 25 of the central shaft 2 is used to fix and connect with the suspension bracket in the independent suspension, and is used for the main support of the load-bearing capacity.

[0026] The first bearing cover plate 4-1 and the second bearing cover plate 4-2 have the same structure, both being cylindrical bosses with a through coaxial fitting hole in the center; the diameter of the second bearing cover plate 4-2 is larger than the diameter of the first bearing cover plate 4-1.

[0027] At the junction of the support connection section 25 and the second bearing assembly section 24 of the aforementioned central shaft 2, an integrally formed limiting ring protrusion 26 is fixedly provided. When the central shaft 2 is inserted into the outer bushing 1, the second bearing cover plate 4-2 is first fitted onto the central shaft 2, and then the second bearing assembly section 3-2 is fitted onto the central shaft 2. A sealing ring 9 is provided between the two, and the sealing ring 9 is fitted onto the smaller diameter protrusion of the second bearing cover plate 4-2 to achieve a seal with the outer bushing 1; then the central shaft 2 is inserted into the outer bushing 1, and the second bearing assembly section 3-2... -2 and the second bearing cover plate 4-2 are both located in the corresponding second bearing mounting cavity 13 and second end cover mounting cavity 14. At this time, the upper limit ring protrusion 26 of the central shaft rod 2 limits and fixes the second bearing cover plate 4-2. Then, the first set bearing 3-1 and the first bearing cover plate 4-1 are sequentially mounted on the central shaft rod 2. A sealing ring 9 is mounted on the first bearing cover plate 4-1, located between the first bearing cover plate 4-1 and the first set bearing 3-1, to achieve a seal with the outer bushing 1, preventing lubricating oil from overflowing and the intrusion of external water or contaminant particles. There are two fastening nuts 5, which are threaded to the threaded section 21 of the central shaft rod 2 and located on the outside of the first bearing cover plate 4-1 to achieve a fastening installation between the central shaft rod 2 and the first bearing cover plate 4-1. A washer 6 is clamped between the two fastening nuts 5 to prevent the fastening nuts 5 from vibrating and falling off.

[0028] An integrally formed fixed support 7 is also fixedly installed on the outer side wall of the outer bushing 1. The top plate of the fixed support 7 is provided with multiple connecting holes for fixed connection with the support plate on the frame.

[0029] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A heavy duty support suspension bearing characterized by: The device includes an outer bushing, a central shaft, two bushing bearings, a bearing cover plate, and a fastening nut. The outer bushing is hollow inside and open at both ends. The central shaft is inserted into the outer bushing and rotatably connected to it via the two bushing bearings. The bearing cover plate is fitted onto the central shaft and positioned outside the bushing bearings. One end of the bearing cover plate is fixed to the central shaft, while the other end is fixed to the central shaft via a fastening nut.

2. A heavy duty support suspension bearing according to claim 1, wherein: The internal space of the outer bushing is a central shaft cavity. Both ends of the central shaft cavity are stepped, with the diameter gradually increasing from the inside to the outside, forming a bearing mounting cavity and an end cover mounting cavity in sequence.

3. A heavy duty support bearing suspension according to claim 2, wherein: The central shaft is large at one end and small at the other, and is a multi-section boss-shaped shaft. From the small end to the large end, it consists of a threaded section, a first bearing assembly section, a main body section, a second bearing assembly section, and a support connection section. The threaded section has an external thread fixed on its circumferential outer wall. The first and second bearing assembly sections are each fitted with a matching bearing and a bearing cover plate. An oil injection gap is left between the main body section and the central shaft cavity.

4. A heavy duty support bearing suspension according to claim 3, wherein: A limiting ring protrusion is provided between the second bearing assembly section and the support connection section.

5. A heavy duty support bearing suspension according to claim 1, wherein: The bearing cover plate is in the shape of a cylindrical boss, with a coaxial fitting hole in its center; a sealing ring is fitted between the bearing cover plate and the aforementioned fitted bearing.

6. A heavy duty support bearing suspension according to claim 1, wherein: A fixed support is fixedly installed on the outer side wall of the outer bushing, integrally formed therewith, and a connection hole is provided on the top plate of the fixed support.

7. A heavy duty support bearing suspension according to claim 3, wherein: The outer side wall of the outer bushing is provided with an oil injection nozzle that communicates with the aforementioned oil injection gap.

8. A heavy duty support bearing according to claim 3, wherein: The fastening nut is provided in two parts, which are threaded onto the threaded section of the central shaft, and a washer is clamped between the two fastening nuts.

9. A heavy duty support bearing according to claim 1, wherein: The bearing set is a spherical bearing, and its inner bushing has a hemispherical structure.

10. A heavy duty support bearing according to claim 3, wherein: The large end of the central shaft is connected to an independent suspension bracket.

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