Double-support bearing seat lubricated by oil slinger and lubricating method of double-support bearing seat

Abstract

The invention relates to the technical field of double-support bearing seats, in particular to an oil slinger lubricated double-support bearing seat which comprises a split box body, end covers and a main shaft, the split box body comprises a base and an upper cover, the top end of the base is in butt joint with the upper cover in a sealed mode through bolts, and the left side and the right side of the split box body are in butt joint with the end covers through bolts. The positioning pins arranged on the two sides of the base are axially installed from the outer side, the polished rod parts of the positioning pins extend into the inner hole of the oil slinger, and an anti-disengaging mechanism is formed. The structure solves the problem that the oil slinger is easy to fall off from the annular groove of the shaft sleeve when equipment is lifted obliquely or dry friction is started; a safety gap is formed between the positioning pin and the inner hole wall of the oil slinger, the oil slinger is allowed to swing normally, meanwhile, it is ensured that the oil slinger can still be limited when swinging at the maximum angle, the problem that a positioning element cannot be installed due to the fact that the inner side space of a traditional split type box body is limited is solved, and the stability and safety of the bearing pedestal under the dynamic working condition are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of double-support bearing housing technology, and more particularly to an oil-slinging ring lubricant. Slippery double-support bearing housing and its lubrication method. Background Technology

[0002] Double-support bearing housings are widely used due to their high load-bearing capacity and structural stability. Traditionally, these housings commonly employ oil bath lubrication. However, oil bath lubrication has several inherent drawbacks: it requires maintaining a high oil level, immersing the lowest rolling elements in the lubricating oil, resulting in significant churning losses, elevated operating temperatures, and poor reliability; high temperatures easily lead to lubricating oil deterioration, necessitating frequent replacements; furthermore, the seals in these housings typically use contact-type skeleton oil seals, which are prone to failure due to wear and aging, especially under high-speed conditions, leading to frequent oil leaks, environmental pollution, and high maintenance costs. Traditional oil bath lubrication is extremely sensitive to oil level, with a very narrow allowable fluctuation range, requiring strict maintenance at a high level, making operation and maintenance inconvenient.

[0003] Oil slinger ring lubrication is a highly efficient lubrication method. It uses a rotating oil slinger ring to deliver lubricating oil from an oil sump to the parts requiring lubrication, resulting in minimal agitation loss and significant temperature rise. However, its application in split double-support bearing housings presents several technical challenges: First, because the oil slinger ring is located in the oil sump inside the housing, space is limited, making it impossible to drill or tap from the inside to install locating pins to prevent accidental dislodgement. During equipment tilting, the oil slinger ring can easily detach from its mounting groove. If lubrication is not applied as required before equipment startup, increased dry friction between the oil slinger ring and the bushing can lead to vibration or even detachment from the annular groove under centrifugal force. Second, existing bearing housings struggle to efficiently collect and store the lubricating oil delivered by the oil slinger ring. Directional guidance to the bearing. Third, traditional end cap structures cannot form an efficient lubricating oil return channel, easily leading to lubricating oil retention in the bearing cavity, causing it to degenerate into an oil bath-like state, intensifying agitation and temperature rise. Therefore, a double-support bearing housing with oil slinger ring lubrication and its lubricating... The sliding method can be used to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to solve the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A double-support bearing housing lubricated by an oil slinger ring includes, The system comprises a split housing, end caps, and a main shaft. The split housing includes a base and a top cover. The top of the base is bolted to the top of the top cover. The left and right sides of the split housing are bolted to the end caps. An oil-resistant rubber-asbestos gasket is provided between the split housing and the end caps for sealing. An oil sump is provided inside the base to store lubricating oil. The two ends of the main shaft are rotatably mounted inside the bearing seats of the split housing via fixed-end bearings and floating-end bearings to support the operation of the main shaft. A waterproof and breathable plug at the top of the top cover balances the internal and external air pressure. An oil level sight glass is provided on the outside of the base to observe the oil level and ensure the normal operation of the lubrication system. The lubrication system includes a bushing and an oil slinger ring. The bushing is fixed to the surface of the main shaft, and the oil slinger ring is suspended on the surface of the bushing through an annular groove. The lower part of the oil slinger ring is immersed in the oil sump of the base. When the main shaft rotates, the oil slinger ring rotates with the shaft and uses centrifugal force to throw the lubricating oil from the oil sump, thereby realizing the delivery of the lubricating oil. This design reduces stirring loss and lowers temperature rise, and is more efficient than traditional oil bath lubrication. The oil collection section includes an oil collection groove, which is integrally formed with the base. The oil collection groove is located directly below the inner side of the bearing seat hole of the base. The oil collection groove is used to receive and collect the lubricating oil delivered by the oil slinger ring. The height of the top of the oil collection groove is based on the lowest point of the inner wall of the bearing seat hole of the base. It is not higher than the center height of the lowest rolling element and not lower than the center height minus one-sixth of the rolling element diameter, so as to ensure that the lubricating oil can be accurately guided to the bearing rolling element and achieve uniform lubrication. The anti-detachment mechanism includes two positioning pins respectively disposed on both sides of the base. The positioning pins are axially inserted and fixed from the outside of the through hole of the base. The smooth part of the positioning pin extends into the inner hole of the oil slinger ring, forming a safety gap with the inner hole wall. This allows the oil slinger ring to swing slightly during operation, but at the same time prevents it from detaching radially. This solves the problem that the oil slinger ring is easy to detach when the equipment is tilted or started without oil, and improves the reliability and safety of the system. The circulating oil circuit includes a flow guide notch and an oil return hole. The flow guide notch is opened on the inside of the end cover to connect the upper and lower cavities. The oil return hole is located on both sides of the base and communicates with the oil sump.

[0006] Preferably, a non-contact bearing isolator is provided between the end cover and the main shaft, and several magnetic plugs are provided on the side of the oil sump of the base, and the magnetic plugs are completely submerged below the oil level of the oil sump of the base. The non-contact bearing isolator is provided between the end cover and the main shaft to provide dynamic sealing, avoid friction and wear, prevent lubricating oil leakage and contaminant intrusion, and is suitable for medium and high speed operating conditions.

[0007] Preferably, the bearing seat hole of the upper cover is provided with a shoulder of an annular structure, and the shoulder cooperates with the corresponding structure of the oil collection groove on the base to jointly perform the bearing positioning function; the oil slinger ring is axially embedded in the shoulder. Within the circumferential gap formed between the shoulder and the oil collection groove, and without interference with either, the fixed end bearing can be a deep groove ball bearing, and the floating end bearing can be a cylindrical roller bearing.

[0008] Preferably, the positioning pin consists of a smooth rod portion and a fastening portion. The smooth rod portion of the positioning pin is configured to extend axially into and be suspended in the inner hole of the oil slinger ring, and a safety gap is formed between the smooth rod portion and the inner hole wall of the oil slinger ring. The fastening portion of the positioning pin is a threaded portion, and the diameter of the smooth rod portion of the positioning pin is smaller than the minor diameter of the threaded portion.

[0009] Preferably, the base has a stepped through hole with at least one step, and the base has a fastening section for engaging with the fastening part of the positioning pin to fix it axially, and a light hole section for the light rod part of the positioning pin to pass through and be guided.

[0010] Preferably, the stepped through hole of the base is composed of a threaded hole section on the outer side and a smooth hole section on the inner side. The positioning pin is a stepped shaft structure, and its smooth rod part passes through the threaded hole section and the smooth hole section in sequence and extends into the inner hole of the oil slinger ring. The threaded part of the positioning pin is engaged with the threaded hole section.

[0011] Preferably, the outermost part of the stepped through hole of the base is provided with a light guide hole segment, and the diameter of the light guide hole segment is larger than the diameter of the threaded hole segment.

[0012] Preferably, the axial overhang length of the positioning pin rod is such that it can still extend into the inner hole of the oil slinger ring to limit its radial disengagement when the oil slinger ring sleeve swings at its maximum angle.

[0013] This invention has at least the following beneficial effects: 1. This invention uses locating pins located on both sides of the base to be axially inserted from the outside, with the smooth rod extending into the inner hole of the oil slinger ring, forming an anti-detachment mechanism. This structure solves the problem of the oil slinger ring being unable to detach from the equipment. To address the issue of the bearing easily detaching from the annular groove of the bushing during tilting or dry friction without lubrication, a safety clearance is provided between the locating pin and the inner wall of the oil slinger ring. This allows the oil slinger ring to swing normally while ensuring that it remains stationary even at its maximum swing angle. This avoids the problem of limited space inside the traditional split housing, which prevents the installation of locating elements, and significantly improves the stability and safety of the bearing housing under dynamic operating conditions.

[0014] 2. This invention integrates an oil-slinging ring lubrication system with an oil collection tank structure. Under centrifugal force, the lubricating oil is evenly transported to the oil collection tank and precisely guided to the bearing under gravity. This avoids the problem of large lubricating oil loss due to agitation in oil bath lubrication. Combined with a circulating oil circuit, it ensures that the lubricating oil quickly returns to the oil sump, preventing it from stagnating in the bearing cavity. This effectively controls the bearing operating temperature, improves lubrication efficiency, and extends the bearing service life.

[0015] 3. The present invention has a magnetic plug installed on the side wall of the oil tank, which is completely submerged below the oil level. It can continuously adsorb ferromagnetic impurities in the lubricating oil, realize online purification of the lubricating oil, and, combined with a non-contact bearing isolator and a waterproof and breathable plug, effectively prevent oil leakage, external contaminant intrusion and internal and external pressure difference balance, reduce the deterioration and pollution of the lubricating oil, significantly extend the lubricating oil replacement cycle, and reduce maintenance costs and environmental risks. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 The present invention proposes an internal double-support bearing housing with oil slinger ring lubrication. Schematic diagram of the component structure; Figure 2 This is a schematic diagram of the axial cross-sectional structure of a double-support bearing housing with oil-slinging ring lubrication proposed in this invention; Figure 3 For the present invention Figure 2 Enlarged structural diagram of A in the middle; Figure 4 For the present invention Figure 2 Enlarged structural diagram of B in the middle; Figure 5 This is a schematic diagram of the external planar structure of a double-support bearing housing with oil-slinging ring lubrication proposed in this invention; Figure 6 This is a cross-sectional schematic diagram of a double-support bearing housing with oil slinger ring lubrication proposed in this invention; Figure 7 This is a schematic diagram of a circulating oil circuit structure for a double-support bearing housing with oil slinger ring lubrication proposed in this invention; Figure 8 This is a schematic diagram of the internal partial structure of a double-support bearing housing with oil slinger ring lubrication proposed in this invention; Figure 9 This is a schematic diagram of the internal structure of the base of a double-support bearing housing with oil-slinging ring lubrication proposed in this invention.

[0018] In the diagram: 1. Base; 2. Top cover; 3. End cover; 4. Fixed end bearing; 5. Floating end bearing; 6. Main shaft; 7. Bushing; 8. Oil slinger ring; 9. Locating pin; 10. Oil collection groove; 11. Oil return hole; 12. Flow guide notch; 13. Bearing isolator; 14. Magnetic plug; 15. 16. Oil-resistant rubber asbestos gasket; 17. Waterproof and breathable plug; 18. Oil immersion lens. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the description herein... The specific embodiments described are merely illustrative of the invention and are not intended to limit the invention.

[0020] Reference Figures 1-9 A double-support bearing housing lubricated by an oil slinger ring includes, The split housing includes a base 1 and a top cover 2. The top of the base 1 is bolted to the top cover 2. The left and right sides of the split housing are bolted to the end cover 3. An oil-resistant rubber asbestos gasket 15 is provided between the split housing and the end cover 3 for sealing. An oil pool is provided inside the base 1. The two ends of the main shaft 6 are rotatably installed inside the bearing seat holes of the split housing through fixed end bearings 4 and floating end bearings 5. A waterproof and breathable plug 16 is provided at the top of the top cover 2. An oil level sight glass 17 is provided on the outside of the base 1 for observing the oil level. The lubrication system includes a bushing 7 and an oil slinger ring 8. The bushing 7 is fixed on the surface of the main shaft 6. The oil slinger ring 8 is suspended on the surface of the bushing 7 through an annular groove. The lower part of the oil slinger ring 8 is immersed in the oil pool of the base 1. The oil collection section includes an oil collection groove 10, which is integrally formed with the base 1. The oil collection groove 10 is located directly below the bearing seat hole inside the base 1. The oil collection groove 10 is used to receive and collect the lubricating oil delivered by the oil slinger ring 8. The anti-detachment mechanism includes two positioning pins 9 respectively disposed on both sides of the base 1, and the positioning pins 9 are axially inserted and fixed from the outside of the through hole of the base 1, and the bare part of the positioning pin 9 extends into the inner hole of the oil slinger ring 8. The circulating oil circuit includes a flow guide notch 12 and an oil return hole 11. The flow guide notch 12 is opened on the inner side of the end cover 3 to connect the upper and lower cavities. The oil return hole 11 is located on both sides of the base 1 and is connected to the oil sump.

[0021] A non-contact bearing isolator 13 is provided between the end cover 3 and the main shaft 6. Several magnetic plugs 14 are provided on the side of the oil sump of the base 1, and the magnetic plugs 14 are completely submerged below the oil level of the oil sump of the base 1.

[0022] The bearing seat hole of the upper cover 2 is provided with a shoulder with an annular structure, and the shoulder works in conjunction with the corresponding structure of the oil collection groove 10 on the base 1 to jointly perform the bearing positioning function. The oil slinger ring 8 is embedded in the circumferential gap formed between the shoulder and the oil collection groove 10 in the axial direction, and does not interfere with either of them.

[0023] The positioning pin 9 consists of a smooth rod portion and a fastening portion. The smooth rod portion of the positioning pin 9 is configured to extend axially into and be suspended in the inner hole of the oil slinger ring 8, and a safety clearance is formed between the smooth rod portion and the inner hole wall of the oil slinger ring 8. The fastening portion of the positioning pin 9 is a threaded portion, and the diameter of the smooth rod portion of the positioning pin 9 is smaller than the minor diameter of the thread of the threaded portion.

[0024] The base 1 is provided with a stepped through hole, and the stepped through hole has at least one step. The base 1 has a fastening section for cooperating with the fastening part of the positioning pin 9 to fix it axially, and a light hole section for the light rod part of the positioning pin 9 to pass through and be guided.

[0025] The stepped through hole of the base 1 consists of a threaded hole section on the outer side and a smooth hole section on the inner side. The positioning pin 9 has a stepped shaft structure. The smooth part of the positioning pin 9 passes through the threaded hole section and the smooth hole section in sequence and extends into the inner hole of the oil slinger ring 8. The threaded part of the positioning pin 9 is engaged with the threaded hole section.

[0026] The outermost part of the stepped through hole in the base 1 is also provided with a guide light hole section, and the diameter of the guide light hole section is larger than the diameter of the threaded hole section.

[0027] The axial overhang length of the locating pin 9's smooth rod portion can still extend into the inner hole of the oil slinger ring 8 to limit its radial disengagement when the oil slinger ring 8 swings at its maximum angle around the bushing 7.

[0028] The base 1 and the top cover 2 are bolted together to form a split structure, which facilitates the installation and maintenance of bearings and internal components. An oil-resistant rubber asbestos gasket is installed between the split housing and the end cover 3. Plate 15 ensures sealing and prevents lubricating oil leakage. An oil sump is opened inside the base 1 to store lubricating oil; the main shaft 6 is rotatably mounted via the fixed end bearing 4 and the floating end bearing 5 to support the operation of the main shaft 6; the waterproof and breathable plug 16 at the top of the cover 2 balances the internal and external pressure difference and prevents moisture intrusion; the oil level sight glass 17 on the outside of the base 1 makes it easy to observe the oil level and ensure the normal operation of the lubrication system; when the main shaft 6 rotates, the oil slinger ring 8 rotates with the shaft, using centrifugal force to throw the lubricating oil from the oil sump, realizing the delivery of lubricating oil. This design reduces stirring loss and lowers temperature rise, and is more efficient than traditional oil bath lubrication.

[0029] The height of the top of the oil collection groove 10 is based on the lowest point of the inner wall of the bearing seat hole of the base 1. It is not higher than the center height of the lowest rolling element, and not lower than the center height minus one-sixth of the rolling element diameter. This ensures that the lubricating oil can be accurately guided to the bearing, achieving uniform lubrication and avoiding lubrication waste or insufficient lubrication. The smooth part of the positioning pin 9 extends into the inner hole of the oil slinger ring 8, forming a safe gap with the inner hole wall. This allows the oil slinger ring 8 to swing slightly during operation, but at the same time prevents it from detaching radially. This solves the problem that the oil slinger ring is easy to detach when the equipment is tilted or when it is started without lubrication, thus improving the reliability and safety of the system.

[0030] The guide notch 12 is opened on the inner side of the end cover 3 to connect the upper and lower cavities and promote the flow of lubricating oil. The return oil hole 11 is set on both sides of the base 1 and connects to the oil sump to ensure that the lubricating oil flowing through the bearing returns smoothly to the oil sump, forming a closed loop, avoiding the lubricating oil from stagnating in the bearing cavity and preventing local temperature rise. The fixed end bearing 4 can be a deep groove ball bearing, and the floating end bearing 5 can be a cylindrical roller bearing. The non-contact bearing isolator 13 is set between the end cover 3 and the main shaft 6 to provide dynamic sealing, avoid friction and wear, prevent lubricating oil leakage and contaminant intrusion, and is suitable for medium and high speed conditions.

[0031] Through systematic structural innovation, the problem of lubrication of the oil slinger ring 8 on the double-support bearing housing was solved. The application overcomes technical bottlenecks. Actual measurements show that its bearing operating temperature rise can be reduced by more than 50% compared to traditional oil bath lubrication, achieving significant low-temperature operation while ensuring lubrication reliability under all operating conditions and greatly improving bearing life. The lubrication method of the oil slinger ring 8 of the present invention allows for a much wider range of oil level fluctuations than traditional oil bath lubrication. It can work effectively even when the oil level fluctuates within a reasonable range near the theoretical center value, which significantly reduces the dependence on precise oil level control and correspondingly extends the maintenance cycle. The unique externally mounted anti-detachment mechanism effectively prevents the oil slinger ring 8 from detaching under abnormal operating conditions; combined with the low oil level design and non-contact bearing isolator 13 seal, it physically eliminates leakage paths, achieving true zero leakage and maintenance-free operation. Through structural design, sufficient lubricating oil can be retained in the oil collection groove 10 and the bottom of the bearing after shutdown, providing initial lubrication for the next start-up and possible passive slow rotation conditions, and avoiding dry friction; the annular shoulder in the upper cover 2 seat hole works in conjunction with the oil collection groove 10 on the base 1 to also serve as the bearing axial positioning function, and forms a compact layout with the oil slinger ring 8 to provide a very short and efficient delivery path for the lubricating oil. Thanks to its efficient lubrication and excellent temperature rise control capabilities brought by the circulating oil circuit, the bearing housing can maintain the bearing temperature rise at a low level even under higher speed and heat load conditions, breaking through the limitations of traditional oil bath lubrication; the magnetic purification system can effectively adsorb ferromagnetic impurities in the lubricating oil, keep the oil clean, and extend the service life and replacement cycle of the bearing. This invention achieves significant low-temperature operation through its inherent high-efficiency lubrication and circulating oil circuit structure. Actual measurements show that, under high-speed (2900 rpm) conditions as described in the embodiment, its performance can replace the traditional "oil bath lubrication + external water cooling" solution; based on its excellent temperature rise... In terms of control capabilities, this invention is also applicable to other harsh operating conditions with high heat loads; This makes it particularly suitable for scenarios where traditional cooling methods are uneconomical or unreliable: In environments where there is no cooling water, or in situations where freshwater resources and space are extremely precious, such as on ships, although seawater resources are abundant, their strong corrosiveness prevents them from being used directly as cooling water. If a traditional cooling solution is adopted, an additional closed-loop freshwater cooling circulation system needs to be set up and maintained. This system not only has a high initial investment, but its operation and maintenance also constitute ongoing costs. In addition, the system itself occupies valuable space on board. For equipment that needs to be shut down in winter or cold regions, traditional water cooling systems pose a risk of cracking due to the expansion of the cooling water in the pipes as it freezes.

[0032] This invention completely eliminates the need for an external water cooling system, which not only saves the complex, expensive, space-consuming and fault-prone cooling system, significantly reducing initial investment and long-term operation and maintenance costs, but also fundamentally eliminates the risk of equipment damage caused by cooling water freezing, comprehensively improving the reliability, applicability and maintenance-free nature of the equipment in different environments. In this invention, the lowest point of the inner wall of the bearing seat hole of the base 1 is defined as the reference zero position. According to the bearing manual, the height of the center of the lowest rolling element of the bearing is 14mm above the reference zero position, and the diameter of the rolling element is 12mm. Therefore, the top height H of the oil collection groove 10 should satisfy: 14mm - 2mm = 12mm ≤ H ≤ 14mm. In this embodiment, the top height H of the oil collection groove is set to 13mm. When the machine is running normally, the lubricating oil collected in the oil collection tank 10 can flow smoothly through the bearing under the action of gravity. After the machine stops, a certain amount of lubricating oil will remain in the groove and at the bottom of the bearing. This not only provides initial lubrication for the next start-up, but more importantly, when the equipment is passively slowed down due to the pressure difference inside and outside the system, such as under natural wind, the remaining lubricating oil can provide the necessary contact lubrication for the bearing under this specific working condition, effectively avoiding low-speed dry friction.

[0033] A lubrication method for a double-support bearing housing includes the following steps; The first step is to determine the height of the oil tank in base 1 and the oil level in the oil sump. The second step is to set the theoretical height of the oil level in the oil sump of base 1 as follows: taking the lowest point of the inner wall of the bearing seat hole of base 1 as a reference, extending radially upwards to half the distance from the outer ring of the bearing; and using this theoretical height as the center position of the oil level mark. The third step is that the actual oil level can fluctuate around the theoretical height, and the allowable fluctuation range is not less than one-third of the theoretical height minus the diameter of the rolling element, and not more than one-third of the theoretical height plus the diameter of the rolling element. The fourth step is to determine the height of the top of the oil collection trough 10: it should not be higher than the center height of the bottommost rolling element, and not lower than the center height minus one-sixth of the rolling element diameter; The fourth step is the delivery and collection of lubricating oil: as the main shaft 6 rotates, the oil slinger 8 rotates with the shaft, and under the action of centrifugal force, the lubricating oil is evenly delivered from the oil pool of the base 1 to the oil collection tank 10. Fifth step, guiding and lubricating the lubricating oil: The lubricating oil collected in the oil collection tank 10 flows through the bearing under the action of gravity, completing the lubrication; Step 6, Lubricating oil return and purification: The lubricating oil that has flowed through the bearing returns to the oil sump of the base 1 through the guide notch 12 and the oil return hole 11; the ferromagnetic impurities in the oil sump of the base 1 are adsorbed by the magnetic plug 14, thereby achieving continuous purification of the lubricating oil.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Points. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the invention as claimed. The scope of protection claimed by this invention is defined by the appended claims and their equivalents.

Claims

1. A double-support bearing housing lubricated by an oil slinger ring, characterized in that, include, The split housing includes a base (1) and a top cover (2). The top of the base (1) is bolted to the top cover (2). The left and right sides of the split housing are bolted to the end cover (3). An oil-resistant rubber asbestos gasket (15) for sealing is provided between the split housing and the end cover (3). An oil pool is provided inside the base (1). The two ends of the main shaft (6) are rotatably installed inside the bearing seat holes of the split housing through a fixed end bearing (4) and a floating end bearing (5). A waterproof and breathable plug (16) is provided at the top of the top cover (2). An oil sight glass (17) for observing the oil level is provided on the outside of the base (1). The lubrication system includes a bushing (7) and an oil slinger (8). The bushing (7) is fixed on the surface of the main shaft (6). The oil slinger (8) is suspended on the surface of the bushing (7) through an annular groove. The lower part of the oil slinger (8) is immersed in the oil pool of the base (1). The oil collection section includes an oil collection groove (10), which is integrally formed with the base (1). The oil collection groove (10) is located directly below the bearing seat hole of the base (1). The oil collection groove (10) is used to receive and collect the lubricating oil delivered by the oil slinger ring (8). The anti-detachment mechanism includes two positioning pins (9) respectively set on both sides of the base (1), and the positioning pins (9) are axially inserted and fixed from the outside of the bearing seat through hole of the base (1), and the bare rod part of the positioning pin (9) extends into the inner hole of the oil slinger ring (8); The circulating oil circuit includes a flow guide notch (12) and an oil return hole (11). The flow guide notch (12) is opened inside the end cap (3) to connect the upper and lower cavities. The oil return hole (11) is set on both sides of the base (1) and communicates with the oil sump.

2. A double-support bearing housing with oil slinger ring lubrication according to claim 1, Its features are, A non-contact bearing isolator (13) is provided between the end cap (3) and the main shaft (6). Several magnetic plugs (14) are provided on the side of the oil sump of the base (1), and the magnetic plugs (14) are completely submerged below the working oil level of the oil sump of the base (1).

3. The double-support bearing housing with oil slinger ring lubrication according to claim 1, characterized in that, The bearing seat hole of the upper cover (2) is provided with a shoulder with a ring structure, and the shoulder works in conjunction with the corresponding structure of the oil collection groove (10) on the base (1) to jointly serve as the positioning function of the fixed end bearing (4) and the floating end bearing (5). The oil slinger ring (8) is embedded in the circumferential gap formed between the shoulder and the oil collection groove (10) in the axial direction, and does not interfere with either of them.

4. The double-support bearing housing with oil slinger ring lubrication according to claim 1, characterized in that, The positioning pin (9) consists of a smooth rod and a fastening part. The smooth rod of the positioning pin (9) is configured to extend axially into and be suspended in the inner hole of the oil slinger ring (8), and a safety gap is formed between the smooth rod and the inner wall of the oil slinger ring (8). The fastening part of the positioning pin (9) is a threaded part, and the diameter of the smooth rod of the positioning pin (9) is smaller than the minor diameter of the thread of the threaded part.

5. A double-support bearing housing with oil slinger ring lubrication according to claim 1, characterized in that, The base (1) is provided with a stepped through hole, and the stepped through hole has at least one step. The base (1) is provided with a fastening section for cooperating with the fastening part of the positioning pin (9) to fix it axially, and a light hole section for the light rod part of the positioning pin (9) to pass through and be guided.

6. A double-support bearing housing with oil slinger ring lubrication according to claim 5, characterized in that, The base (1) has a stepped through hole consisting of a threaded hole segment on the outer side and a position. The inner side is formed by the light hole section. The positioning pin (9) is a stepped shaft structure. The light rod part of the positioning pin (9) passes through the threaded hole section and the light hole section in sequence and extends into the inner hole of the oil slinger ring (8). The threaded part of the positioning pin (9) cooperates with the threaded hole section.

7. A double-support bearing housing with oil slinger ring lubrication according to claim 6, characterized in that, The outermost side of the stepped through hole of the base (1) is also provided with a light guide hole section, and the diameter of the light guide hole section is larger than the diameter of the threaded hole section.

8. A double-support bearing housing with oil slinger ring lubrication according to claim 6, characterized in that, The axial overhang length of the locating pin (9) is configured such that when the locating pin (9) swings at its maximum angle around the bushing (7), it can still extend into the inner hole of the oil slinger (8) to limit its radial disengagement.

9. A lubrication method based on the double-support bearing housing according to any one of claims 1 to 8, characterized in that, Includes the following steps: The first step is to determine the height of the base (1) and the oil collection tank (10), and to determine the oil level in the oil sump; The second step is to set the theoretical height of the oil level in the oil sump of the base (1) as follows: based on the lowest point of the inner wall of the bearing seat hole of the base (1), extend radially upward to half the thickness of the outer ring of the bearing; and use this theoretical height as the center position of the oil level mark. The third step is that the actual oil level can fluctuate around the theoretical height, and the allowable fluctuation range is not less than one-third of the theoretical height minus the diameter of the rolling element, and not more than one-third of the theoretical height plus the diameter of the rolling element. The fourth step is to determine the height of the top of the oil collection tank: it should not be higher than the center height of the lowest rolling element, and not lower than the center height minus one-sixth of the rolling element diameter; The fourth step is the delivery and collection of lubricating oil: as the main shaft (6) rotates, the oil slinger (8) rotates with the shaft, and under the action of centrifugal force, the lubricating oil is evenly delivered from the oil pool of the base (1) to the oil collection tank (10); The fifth step is the guidance and lubrication of the lubricating oil: the lubricating oil collected in the oil collection groove (10) flows through the bearing under the action of gravity to complete the lubrication; Step 6, lubricating oil return and purification: the lubricating oil after flowing through the bearing returns to the oil pool of the base (1) through the guide notch (12) and the oil return hole (11); the ferromagnetic impurities in the oil pool of the base (1) are adsorbed by the magnetic plug (14) to achieve continuous purification of the lubricating oil.

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