Cylindrical bearing bush
By designing an integrated cylindrical bearing shell, the inner wall is equipped with an oil groove and an oil inlet hole, and the outer wall is equipped with an oil drain groove, the problem of unsatisfactory lubrication effect of the segmented bearing shell after wear is solved, uniform lubrication and efficient oil circulation are achieved, and the stability and safety of the equipment are improved.
Patent Information
- Application Number
- CN202422999385.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-05
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-12-05
AI Technical Summary
The split bearing shells of existing large rotating machinery cannot restore tightness after wear, resulting in oil leakage, unsatisfactory lubrication effect, and the positioning pins are displaced and blocked the oil inlet holes, affecting the operation stability and safety of the equipment.
It adopts an integrated cylindrical bearing structure, with multiple evenly spaced oil grooves and oil inlet holes on the inner wall, and an oil drain groove on the outer wall, forming an oil circulation to ensure uniform lubrication and efficient discharge of high-temperature oil.
It realizes uniform lubrication between the bearing shell and the spindle, reduces wear, improves the operating stability and safety of the equipment, and saves the use of lubricating oil.
Smart Images
Figure CN223282396U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of mechanical equipment, and in particular, to a cylindrical bearing bush. Background Art
[0002] Bearings, installed between the plain bearing and the journal, form an oil film to provide lubrication and reduce rotational friction between the two. Because friction between the bearing and shaft generates significant heat during relative rotation, poor bearing precision or poor lubrication can lead to heat accumulation, increasing wear on mating parts or components, reducing service life, and posing safety risks to equipment.
[0003] In related technologies, bearings for large rotating machinery often use a split-jointed structure. After wear occurs, the gaps between the split surfaces gradually widen, preventing effective restoration of tightness. This leads to decreased bearing performance and oil leakage from the gaps, impacting the overall operational stability of the equipment. Furthermore, the oil tanks used to store lubricating fluid cannot be located at the joints of the bearings. Most split bearings use a single oil tank for lubrication, resulting in unsatisfactory lubrication. Furthermore, the positioning pins at the bottom of the bearings are easily displaced by shaft vibration, blocking some of the oil inlet holes and causing insufficient oil flow. Utility Model Content
[0004] The purpose of the present disclosure is to provide a cylindrical bearing bushing to at least partially solve the problems existing in the above-mentioned related art.
[0005] In order to achieve the above-mentioned purpose, the present disclosure provides a cylindrical bearing, comprising: a bearing body, which is an integrated cylindrical structure and is used to be sleeved on a main shaft; an oil groove, which is arranged on the inner wall of the bearing body, and an oil inlet hole is provided in the oil groove, which is used to communicate with the outside of the bearing body to replenish oil; and an oil drain groove, which is circumferentially opened on the outer wall of one axial end of the bearing body, and the oil drain groove is at least partially connected to the inner wall of the bearing body, and is used to allow the oil to flow from the inside of the bearing body to the outside.
[0006] Optionally, there are multiple oil grooves, and the multiple oil grooves are evenly spaced apart on the inner wall of the bearing body and extend along the axial direction of the bearing body.
[0007] Optionally, the oil groove is formed as a curved surface structure that is recessed from the inner wall of the bearing body to the outer wall, the curved surface of the oil groove is configured so that the edge is connected to the inner wall of the bearing body, and the oil inlet hole is opened on the curved surface of the oil groove.
[0008] Optionally, the oil inlet hole is arranged in the middle of the bottom wall of the oil groove, and the oil inlet hole radially penetrates the cylindrical wall of the bearing body.
[0009] Optionally, an oil channel is further included, which is arranged on the inner wall of the end of the bearing body and is arranged in a circle along the bearing body to supply oil to circulate inside the bearing body.
[0010] Optionally, the oil channel includes a first oil channel and a second oil channel, and the first oil channel and the second oil channel are respectively arranged at two ends of the bearing body, wherein the first oil channel is configured to be connected to the oil drain groove.
[0011] Optionally, the bottom wall of the oil drain groove is constructed as a plane perpendicular to the radial direction of the bearing shell body, and a strip-shaped through hole penetrating the cylindrical wall of the bearing shell body is opened on the bottom wall of the oil drain groove, and the oil drain groove is connected to the first oil channel through the strip-shaped through hole.
[0012] Wherein, the axial dimension of the strip-shaped through hole along the bearing shell body is smaller than the width of the first oil channel.
[0013] Optionally, a flange is further provided on the outer wall of the bearing body, and the flange is provided at an end of the bearing body close to the end where the second oil channel is provided.
[0014] Optionally, a plurality of recessed portions are evenly spaced apart on the circumferential surface of the flange, and positioning holes are provided in the recessed portions.
[0015] Optionally, a temperature measuring hole is opened on the outer wall of the bearing body, and a temperature sensing element is arranged in the temperature measuring hole.
[0016] The above technical solution utilizes an integrated bearing sleeve mounted on the spindle, providing the bearing body with a certain degree of wear resistance, effectively preventing shape changes caused by wear. Furthermore, an oil groove with an oil inlet hole can be provided on the inner wall of the bearing body, and an oil drain groove can be provided at one end of the bearing body. Oil can enter the oil groove through the oil inlet hole and be temporarily stored there. After lubricating the spindle, it is discharged through the oil drain groove, creating a good oil circulation and achieving an ideal lubrication effect.
[0017] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:
[0019] Figure 1 It is a schematic structural diagram of a cylindrical bearing according to an exemplary embodiment.
[0020] Figure 2 It is a cross-sectional view of a cylindrical bearing along the axial direction according to an exemplary embodiment.
[0021] Figure 3 It is a schematic structural diagram of a cylindrical bearing according to an exemplary embodiment.
[0022] Figure 4 It is a partial schematic diagram of a cylindrical bearing according to an exemplary embodiment.
[0023] Figure 5 It is a partial schematic diagram of a cylindrical bearing according to an exemplary embodiment.
[0024] Description of Reference Numerals
[0025] 100-bearing body, 110-oil groove, 111-oil inlet hole, 120-oil channel, 121-first oil channel, 122-second oil channel, 130-oil drain groove, 140-flange, 141-recess, 142-positioning hole, 150-temperature measuring hole. DETAILED DESCRIPTION
[0026] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.
[0027] In the present disclosure, unless otherwise specified, directional words such as “inside” and “outside” refer to the inside and outside of the relevant component relative to its own outline in actual use.
[0028] Furthermore, the adjectives “first,” “second,” etc., used in the present disclosure are intended to distinguish one element from another and do not have any meaning of order or importance.
[0029] The present disclosure provides a cylindrical bearing bushing, referring to Figures 1 to 3 The cylindrical bearing includes a bearing body 100, an oil groove 110 and an oil drain groove 130. The bearing body 100 can be an integrated cylindrical structure, the interior of which can be used to sleeve the main shaft and provide lubrication for the main shaft through lubricating oil. The oil groove 110 can be set on the inner wall of the bearing body 100. The oil groove 110 can be provided with an oil inlet hole 111 for communicating with the outside of the bearing body 100 to replenish the oil. The oil drain groove 130 can be opened circumferentially on the outer wall of one axial end of the bearing body 100. The oil drain groove 130 can be at least partially connected to the inner wall of the bearing body 100 to allow the oil to flow out from the inside of the bearing body 100 to the outside.
[0030] In the above embodiment, the oil used to provide lubrication to the main shaft can be injected from the outside of the bearing body 100 into the inside of the bearing body 100 through the oil inlet hole 111, and temporarily stored in the oil groove 110. During the high-speed rotation of the main shaft inside the bearing body 100, the oil can be evenly coated on the curved surface of the main shaft to form an oil film to reduce the friction between the main shaft and the bearing body 100. Since the bearing body 100 is an integrated cylindrical structure, the specific opening position of the oil groove 110 on the inner wall of the bearing body 100 is not restricted by the dividing line of the combined bearing, and can be designed accordingly according to the actual lubrication effect required by the main shaft to provide good and adaptive lubrication protection for the main shaft. At the same time, an oil drain groove 130 can be opened along the circumferential direction at one end of the bearing body 100. The oil drain groove 130 can form a passage with the inner wall of the bearing body 100 at least partially, which is used to discharge the high-temperature oil after use inside the bearing body 100, so that the oil can form a good oil circulation between the oil groove 110 and the oil drain groove 130, which is convenient for continuous replacement of the lubricating oil inside the bearing, and ensures a good lubrication effect between the main shaft and the bearing body 100.
[0031] It should be noted that the main axis here is defined relative to the installation position of the cylindrical bearing of this application, and is used to indicate the installation dependency relationship between the cylindrical bearing and the shaft. It can be any shaft structure used to connect or transfer loads, and is not limited to the type of shaft in which the cylindrical bearing is applied in the device during actual use.
[0032] Through the above technical solution, an integrated bearing sleeve is used to fit the spindle, and the bearing body 100 has a certain wear resistance, which can effectively prevent shape changes caused by wear. At the same time, the inner wall of the bearing body 100 can be provided with an oil groove 110 having an oil inlet hole 111. One end of the bearing body 100 can be provided with an oil drain groove 130. Oil can enter the oil groove 110 through the oil inlet hole 111 and be temporarily stored. After lubricating the spindle, it can be discharged through the oil drain groove 130, forming a good oil circulation and an ideal lubrication effect.
[0033] In some embodiments, reference Figures 1 to 3 The number of the oil grooves 110 can be multiple, and the multiple oil grooves 110 can be evenly spaced on the inner wall of the bearing body 100 and extend along the axial direction of the bearing body 100. In this embodiment, the multiple oil grooves 110 evenly spaced on the inner wall of the bearing body 100 can ensure that the spindle curved surface is uniformly coated with oil in all directions, and the thickness of the formed oil film is stable and reliable, preventing the oil film thickness from varying, and preventing the oil film from being damaged and causing wear to both the spindle and the bearing body 100. Arranging the oil grooves 110 to extend along the axial direction can further increase the oil coating area, ensuring that the oil film can effectively cover the spindle along the axial length, thereby improving the protection effect on the spindle.
[0034] In other embodiments, reference Figure 1 and Figure 2 The number of oil grooves 110 can be four, and any two adjacent oil grooves 110 can be formed with a curvature interval of 90° along the circumferential inner wall of the bearing body 100. In this embodiment, along the circumferential direction of the bearing body 100, a single oil groove 110 can provide sufficient and stable oil supply to the spindle curved surface within a curvature range of approximately 55° on both sides. Therefore, selecting four oil grooves 110 with a curvature interval of 90° can provide sufficient coverage of the spindle curved surface in all directions, ensuring that the oil film formed between the spindle and the bearing body 100 is uniform and stable in thickness, and is less likely to suffer instantaneous damage to the oil film caused by thickness changes. This can also effectively ensure the lubrication of the spindle when the spindle load changes.
[0035] For example, see Figure 4 and Figure 5 The bottom wall of the oil groove 110 can be formed as a curved surface structure that is recessed from the inner wall to the outer wall of the bearing body 100 . The curved surface of the oil groove 110 can be configured so that the edge is connected to the inner wall of the bearing body 100 , and the oil inlet hole 111 can be opened on the curved surface of the oil groove 110 .
[0036] In the above embodiment, the bottom wall of the oil groove 110 is set to a curved surface with a certain curvature, and the edge of the curved surface is formed to be directly connected to the inner wall of the bearing body 100 to form a "cylindrical" or "spindle-shaped" oil groove 110, which facilitates the oil to flow from the oil groove 110 into the gap between the main shaft and the oil groove 110, ensuring that the process of oil coating the curved surface of the main shaft is uniform and stable, thereby improving the lubrication and protection effect of the main shaft.
[0037] For example, see Figures 1 to 3 The oil inlet hole 111 can be set in the middle of the bottom wall of the oil groove 110 to facilitate the uniform input of oil into the oil groove 110. After the oil in the oil groove 110 forms an oil film between the main shaft and the bearing body 100, the oil inlet hole 111 can ensure that the oil groove 110 can continuously and evenly replenish the oil into the oil film, avoiding instantaneous damage caused by uneven oil film thickness. In addition, the oil inlet hole 111 can be radially penetrated through the cylindrical wall of the bearing body 100 to connect the interior and exterior spaces of the bearing body 100, facilitating the input of lubricating oil from the exterior of the bearing body 100 through the oil inlet hole 111 into the interior of the bearing body 100.
[0038] In some embodiments, see Figures 1 to 3The cylindrical bearing may further include an oil channel 120, which may be provided on the inner wall of the end portion of the bearing body 100, for supplying oil to circulate inside the bearing body 100. In this embodiment, the oil entering the bearing body 100 from the oil inlet hole 111 may form an oil film between the main shaft and the bearing body 100 during the high-speed rotation of the main shaft. The oil film may be lost toward the end portion of the bearing body 100 during continuous consumption. The oil channel 120, which is recessed from the inner wall to the outer wall, may be provided on the inner wall of the end portion of the bearing body 100 to temporarily store and intercept the lost oil, so that the oil may continue to circulate in the oil channel 120 and reversely replenish the oil film, thereby fully and effectively utilizing the oil, improving the lubrication and protection effect on the main shaft, reducing oil loss, and saving costs.
[0039] For example, refer to Figures 1 to 3 The oil channel 120 may include a first oil channel 121 and a second oil channel 122, and the first oil channel 121 and the second oil channel may be respectively arranged at both ends of the bearing body 100, wherein the first oil channel 121 may be connected to the oil drain groove 130, and the through hole at the bottom of the oil drain groove 130 is connected to the bottom of the first oil channel 121, and the oil may flow out from the first oil channel 121 through the through hole into the oil drain groove 130, and the size of the through hole may be adaptively set according to the flow rate required for the actual discharge of the oil, so that the oil film temperature will not rise abnormally due to poor oil discharge caused by the through hole being too small, thereby affecting the heat dissipation of the main shaft, and the oil film thickness cannot be replenished in time due to the through hole being too large, thereby weakening the lubrication protection of the main shaft.
[0040] For example, refer to Figures 1 to 3 The bottom wall of the oil drain groove 130 can be constructed as a plane perpendicular to the radial direction of the bearing body 100. A strip through hole penetrating the cylindrical wall of the bearing body 100 can be opened on the bottom wall of the oil drain groove 130. The oil drain groove 130 can be connected to the first oil channel 121 through the strip through hole, wherein the axial dimension of the strip through hole along the bearing body 100 can be smaller than the channel width of the first oil channel 121.
[0041] In the above embodiment, the oil drain groove 130 can be a groove-shaped structure that is cut out along the tangential direction of the outer wall of one end of the bearing body 100. The bottom wall of the groove-shaped structure is perpendicular to the radial direction of the bearing body 100, which facilitates the timely discharge of high-temperature oil discharged from the interior of the bearing body 100 along the tangential direction of the outer wall of one end of the bearing body 100. The bottom wall of the oil drain groove 130 can play a guiding role, which is beneficial to the circulation efficiency of the oil. At the same time, the oil drain groove 130 is connected to the interior through a strip-shaped through hole opened on the bottom wall. The size of the strip-shaped through hole along the axial direction of the bearing body 100 is set to be smaller than the channel width of the first oil channel 121, thereby preventing the oil from circulating in the first oil channel 121 from being too short, slowing down the rate at which the oil flows out of the oil drain groove 130, and ensuring that the oil circulation rate meets the heat transfer requirements while allowing as much oil as possible to remain inside the cylindrical bearing to ensure sufficient lubrication of the main shaft.
[0042] For example, refer to Figures 1 to 3 The outer wall of the bearing body 100 may also be provided with a flange 140 for positioning and installing between the bearing body 100 and the external sliding bearing, wherein the flange 140 can be provided at the end close to the bearing body 100 where the second oil channel 122 is provided, and at least needs to be away from the end of the bearing body 100 where the oil drain groove 130 is provided, to avoid the excessive thickness of the oil drain groove 130 cut along the radial direction of the bearing body 100, which affects the structural strength of the bearing body 100 of this part, and ensure the stable positioning between the flange 140 and the sliding bearing.
[0043] For example, refer to Figures 1 to 3 The flange 140 may be provided with a plurality of recessed portions 141 at even intervals on its circumferential surface. Positioning holes 142 may be provided within the recessed portions 141 for positioning and connecting the bearing body 100 to the sliding bearing via bolting, riveting, or other means. In other embodiments, the positioning holes 142 may also be provided at other locations on the circumferential surface of the flange 140, not the recessed portion 141, based on actual positioning requirements, to improve the compatibility of the flange 140 with various sliding bearings.
[0044] In some embodiments, reference Figures 1 to 3 A temperature measuring hole 150 may be provided on the outer wall of the bearing body 100. The temperature measuring hole 150 is recessed from the outer wall of the bearing body 100 to the inner wall but does not penetrate through the hole. A temperature sensing element may be placed in the temperature measuring hole 150. The temperature sensing element may obtain and measure the state of the main shaft inside the bearing body 100 according to the temperature of the bearing body 100, thereby judging whether the main shaft inside the bearing body is operating normally and whether the lubrication of the oil film is damaged, thereby effectively ensuring the safe use of the bearing body 100.
[0045] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.
[0046] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.
[0047] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.
Claims
1. A cylindrical bearing bushing, characterized in that: include: The bearing body is an integrated cylindrical structure used for sleeve connection to the main shaft; an oil groove provided on the inner wall of the bearing body, wherein an oil inlet hole is provided in the oil groove for communicating with the outside of the bearing body to replenish oil; and An oil drain groove is circumferentially opened on the outer wall of one axial end of the bearing body. The oil drain groove is at least partially connected to the inner wall of the bearing body and is used to allow oil to flow out from the inside of the bearing body to the outside.
2. The cylindrical bearing according to claim 1, characterized in that: There are multiple oil grooves, and the multiple oil grooves are evenly spaced and arranged on the inner wall of the bearing shell body and extend along the axial direction of the bearing shell body.
3. The cylindrical bearing according to claim 2, characterized in that: The oil groove is formed as a curved surface structure that is recessed from the inner wall of the bearing body to the outer wall. The curved surface of the oil groove is configured so that the edge is connected to the inner wall of the bearing body, and the oil inlet hole is opened on the curved surface of the oil groove.
4. The cylindrical bearing according to claim 2, characterized in that: The oil inlet hole is arranged in the middle of the bottom wall of the oil groove, and the oil inlet hole is radially penetrated through the cylindrical wall of the bearing shell body.
5. The cylindrical bearing bush according to claim 1, characterized in that: It also includes an oil channel, which is arranged on the inner wall of the end of the bearing body and is arranged in a circle along the bearing body for supplying oil to circulate inside the bearing body.
6. The cylindrical bearing bush according to claim 5, characterized in that The oil channel includes a first oil channel and a second oil channel, wherein the first oil channel and the second oil channel are respectively arranged at two ends of the bearing body, wherein the first oil channel is configured to communicate with the oil drain groove.
7. The cylindrical bearing according to claim 6, characterized in that: The bottom wall of the oil drain groove is constructed as a plane perpendicular to the radial direction of the bearing shell body. A strip-shaped through hole penetrating the cylindrical wall of the bearing shell body is opened on the bottom wall of the oil drain groove. The oil drain groove is connected to the first oil channel through the strip-shaped through hole. Wherein, the axial dimension of the strip-shaped through hole along the bearing shell body is smaller than the width of the first oil channel.
8. The cylindrical bearing bush according to claim 6, characterized in that: The outer wall of the bearing shell body is further provided with a flange, and the flange is arranged near the end of the bearing shell body where the second oil channel is provided.
9. The cylindrical bearing bush according to claim 8, characterized in that: A plurality of recessed portions are evenly spaced on the circumferential surface of the flange, and positioning holes are provided in the recessed portions.
10. The cylindrical bearing bush according to claim 1, characterized in that A temperature measuring hole is provided on the outer wall of the bearing bush body, and a temperature sensing element is provided in the temperature measuring hole.