Sliding bearing device with integrated anti-reverse mechanism

Abstract

This application belongs to the field of sliding bearing technology and provides a sliding bearing device integrating an anti-reverse mechanism. The sliding bearing device includes: a housing, a sliding bearing, an anti-reverse ratchet, and a cooler. The housing has a cylindrical structure, with its center sleeved on the outside of a shaft, and encloses an inner cavity. The sliding bearing is located in the inner cavity and is sleeved on the shaft. The anti-reverse ratchet is disposed between the housing and the sliding bearing to restrict unidirectional rotation of the shaft. The cooler is disposed in the inner cavity to control the operating temperature of the sliding bearing device. This sliding bearing device integrates the sliding bearing, cooler, and anti-reverse ratchet into a single integrated design, forming a composite functional unit that combines support, load-bearing, cooling, and unidirectional stopping functions.

Description

Technical Field

[0001] This application relates to the field of sliding bearing technology, and more specifically to a sliding bearing device integrating an anti-reverse mechanism. Background Technology

[0002] In existing technologies, sliding bearings and anti-reverse mechanisms are typically designed and installed as two independent functional units. Sliding bearings primarily bear the radial and axial loads of the equipment, ensuring stable operation of the rotating shaft; while anti-reverse mechanisms (such as ratchet, one-way clutch, or braking devices) are installed as independent accessories in other locations within the shaft system to prevent reverse rotation of the equipment during shutdown or abnormal operating conditions. This arrangement leads to structural redundancy, large space requirements, and poor functional coordination.

[0003] Therefore, there is an urgent need for a sliding bearing device with an integrated anti-reverse mechanism to solve the above problems. Summary of the Invention

[0004] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0005] To address the aforementioned technical problems, this application proposes a sliding bearing device integrating an anti-reverse mechanism, which integrates the sliding bearing, cooler, and anti-reverse ratchet into a single integrated design, forming a composite functional unit that combines support, load-bearing, cooling, and unidirectional stop functions.

[0006] This application provides a sliding bearing device integrating an anti-reverse mechanism. The sliding bearing device includes: a housing, a sliding bearing, an anti-reverse ratchet, and a cooler. The housing has a cylindrical structure, with its center fitted onto the outside of a shaft, and encloses an inner cavity; the sliding bearing is located within the inner cavity and fitted onto the shaft; the anti-reverse ratchet is disposed between the housing and the sliding bearing to restrict unidirectional rotation of the shaft; the cooler is disposed within the inner cavity to control the operating temperature of the sliding bearing device.

[0007] In a preferred embodiment of this application, the housing includes: an end cap, a housing, and a bottom plate, wherein the housing is a cylindrical structure, the end cap is sealed to the upper part of the housing, and the bottom plate is sealed to the lower part of the housing.

[0008] In a preferred embodiment of this application, the sliding bearing includes: a bearing seat, a thrust head, a thrust pad, and a guide pad; the bearing seat is disposed on the base plate; the thrust head is sleeved on the outside of the shaft; the thrust pad is disposed on the bearing seat and cooperates with the thrust head to bear axial load; the guide pad is sleeved on the outside of the thrust head to bear radial load; wherein, a gap is left between the thrust head, the thrust pad, and the guide pad, and the lubricating oil is distributed in the gap to form an oil film to play a role in lubrication and anti-friction.

[0009] In a preferred embodiment of this application, the anti-reverse ratchet includes a pawl and a ratchet, wherein the pawl is disposed on the end cap, the ratchet is integrated into the thrust head, and the pawl and the ratchet mesh with each other when the shaft reverses to play an anti-reverse role.

[0010] In a preferred embodiment of this application, the sliding bearing device further includes a vent plug, wherein the vent plug is disposed on the end cap and communicates with the inner cavity, for adding lubricating oil and venting gas from the inner cavity.

[0011] In a preferred embodiment of this application, the sliding bearing device further includes a bearing isolator, wherein the bearing isolator is disposed in the gap between the bushing portion of the thrust head and the end cover, and prevents the lubricating oil in the inner cavity from leaking out through the end of the bushing portion and prevents external dust from entering the inner cavity through the labyrinth seal or magnetic seal principle.

[0012] In a preferred embodiment of this application, the sliding bearing device further includes an adjusting nut, wherein the adjusting nut is screwed onto the end of the shaft, and the axial position of the shaft is adjusted by rotation to achieve fine adjustment of the axial clearance.

[0013] In a preferred embodiment of this application, the sliding bearing device further includes an oil drain pipe, wherein the oil drain pipe is disposed on the base plate and communicates with the inner cavity, and is used to drain the old lubricating oil in the housing during maintenance.

[0014] In a preferred embodiment of this application, the sliding bearing device further includes: an oil baffle cylinder, a sealing ring, and an oil baffle sleeve. The oil baffle cylinder is sleeved on the shaft to prevent lubricating oil from leaking out from the connection gap between the sliding bearing device and the shaft. The sealing ring is installed at the end of the oil baffle cylinder to prevent lubricating oil from overflowing from the oil baffle cylinder. The oil baffle sleeve is disposed on the end cover to increase the flow area of ​​the lubricating oil.

[0015] In a preferred embodiment of this application, the sliding bearing device further includes an oil level gauge, wherein the oil level gauge is disposed on the circumference of the side of the housing and is used to display the internal oil level in real time.

[0016] The sliding bearing device with an integrated anti-reverse mechanism provided in this application embodiment can achieve the following technical effects: This application combines the supporting function of the sliding bearing, the cooling function of the cooler, and the one-way stopping function of the anti-reverse ratchet in terms of structure and function. Compared with the prior art where the bearing and the anti-reverse device are separate, the structure of this application is more compact and the axial dimension is shorter. Due to the reduction of external connection links, the number of system failure points is significantly reduced, making it more suitable for long-term continuous operation.

[0017] By integrating the adjusting nut and thrust head assembly, flexible adjustment of axial position and balanced load distribution are achieved, combining the advantages of high load-bearing capacity and high safety. By rotating the adjusting nut, the axial position of the shaft or the entire rotation-related component can be precisely adjusted, realizing the adjustment of axial clearance and improving installation tolerance and maintenance convenience.

[0018] Compared to rolling bearings, this sliding bearing assembly can withstand greater axial loads and radial impacts, while providing reliable reverse protection through an integrated ratchet mechanism. It is suitable for heavy-duty, high-inertia rotating machinery operating conditions that require protection against reversal. Attached Figure Description

[0019] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein: Figure 1 This is a schematic diagram of a sliding bearing device integrating an anti-reverse mechanism according to an embodiment of this application.

[0020] Figure label: 1. Outer shell; 11. Inner cavity; 12. End cap; 13. Housing; 14. Base plate; 2. Sliding bearing; 21. Bearing seat; 22. Thrust head; 23. Thrust pad; 24. Guide pad; 3. Anti-reverse ratchet; 4. Cooler; 5. Vent plug; 6. Bearing isolator; 7. Adjusting nut; 8. Oil drain pipe; 9. Oil level gauge; 10. Key; 100. Oil baffle; 200. Sealing ring; 300. Oil baffle sleeve. Detailed Implementation

[0021] Preferred embodiments of this application are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of this application and are not intended to limit the scope of protection of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0022] It should be noted that in the description of this preferred embodiment, the terms "upper", "lower", "left", "right", "inner", "lateral", "vertical", "longitudinal", etc., indicating the direction or positional relationship, are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0023] Furthermore, in the description of this application, unless otherwise expressly specified and limited, the term "connected" should be interpreted broadly. For example, it can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Although the steps of the auxiliary control method of this application are described in a specific order, this order is not restrictive. Those skilled in the art can perform the steps in different orders without departing from the basic principles of this application.

[0024] Figure 1 This is a schematic diagram of a sliding bearing device integrating an anti-reverse mechanism according to an embodiment of this application.

[0025] like Figure 1 As shown, an embodiment of this application provides a sliding bearing device integrating an anti-reverse mechanism. The sliding bearing device includes a housing 1, a sliding bearing 2, an anti-reverse ratchet 3, and a cooler 4. The housing 1 has a cylindrical structure, with its center sleeved on the outside of the shaft, and encloses an inner cavity 11. The sliding bearing 2 is located in the inner cavity 11 and is sleeved on the shaft. The anti-reverse ratchet 3 is disposed between the housing 1 and the sliding bearing 2 to restrict unidirectional rotation of the shaft. The cooler 4 is disposed in the inner cavity 11 to control the operating temperature of the sliding bearing 2.

[0026] Specifically, the outer casing 1, serving as the integral base and load-bearing housing, is the main load-bearing component for all parts, integrating the sliding bearing 2, anti-reverse ratchet 3, and cooler 4 into a unified encapsulated inner cavity. This shaft is a rotating shaft. The sliding bearing 2, sleeved on the shaft, bears the radial and axial loads, supporting stable shaft operation. The anti-reverse ratchet 3 is integrated with the outer casing 1 and the sliding bearing 2 into a single, compact axial layout. The cooler 4 connects the inner cavity to the outside of the device, featuring a built-in spiral or coil structure that cools the lubricating oil through heat exchange, controlling the bearing's operating temperature and ensuring oil film stability. The integrated design of the sliding bearing 2, cooler 4, and anti-reverse ratchet 3 forms a composite functional unit that combines support, load-bearing, cooling, and unidirectional stop functions.

[0027] like Figure 1As shown, in a preferred embodiment of this application, the housing 1 includes: an end cap 12, a housing 13, and a bottom plate 14, wherein the housing 13 is a cylindrical structure, the end cap 12 is sealed to the upper part of the housing 13, and the bottom plate 14 is sealed to the lower part of the housing 13.

[0028] Specifically, the end cap 12, housing 13, and base plate 14 are fixed together with bolts, forming a closed inner cavity 11. The housing 13 is a cylindrical integral structure with openings at the bottom and top. The base plate 14 serves as the load-bearing base for the entire bearing assembly, and a mounting flange is provided at the bottom for easy fixing to the equipment base. The sliding bearing 2, anti-reverse ratchet 3, and cooler 4 are uniformly integrated and packaged within the inner cavity, resulting in a compact and highly integrated structure that significantly reduces external connection failure points and facilitates assembly, inspection, and routine maintenance.

[0029] Preferably, the outer wall of the housing 13 is provided with reinforcing ribs, which can effectively improve the overall structural strength and rigidity and suppress mechanical vibrations generated during the operation of the device.

[0030] like Figure 1 As shown, in a preferred embodiment of this application, the sliding bearing 2 includes: a bearing seat 21, a thrust head 22, a thrust pad 23, and a guide pad 24. The bearing seat 21 is mounted on a base plate 14; the thrust head 22 is sleeved on the outside of the shaft; the thrust pad 23 is mounted on the bearing seat 21 and cooperates with the thrust head 22 to bear axial loads; the guide pad 24 is sleeved on the outside of the thrust head 22 to bear radial loads; wherein, a gap is left between the thrust head 22, the thrust pad 23, and the guide pad 24, and lubricating oil is distributed in the gap to form an oil film to lubricate and prevent friction.

[0031] Specifically, the bearing seat 21 is fixedly mounted above the base plate 14, providing a stable mounting reference and support base for the thrust bearings 23, ensuring that each thrust bearing 23 is subjected to uniform force. The thrust head 22 is integrally sleeved on the outside of the rotating shaft, adopting a highly integrated structure. The thrust head 22 includes a thrust disk, and the thrust bearings 23 are evenly arranged on the bearing seat 21, cooperating with the end face of the thrust disk of the thrust head 22 to jointly bear the axial load during equipment operation. The surface of the thrust bearings can be provided with a wedge-shaped inclined surface, which can adaptively adjust the tilt angle during operation, effectively limiting the axial movement of the rotating shaft; the guide bearings 24 are distributed circumferentially and sleeved on the outside of the thrust head 22, mainly used to bear the radial load during shaft operation. The thrust head 22, thrust pad 23, and guide pad 24 are provided with reasonable gaps. The lubricating oil stored in the housing fills each fitting gap. When the equipment is running, a liquid dynamic pressure oil film is formed between the guide pad and the journal, and between the thrust pad and the end face of the thrust head. This can significantly reduce the friction and wear of the contact surface, buffer vibration, and balance the load. At the same time, the built-in cooler is used to exchange heat and control the temperature of the lubricating oil, maintain the working stability of the oil film, and ensure the long-term stable and reliable operation of the sliding bearing and the entire anti-reverse bearing device.

[0032] Preferably, a key 10 is installed between the shaft and the thrust head 22 to axially fix the thrust head 22 on the shaft and transmit rotational torque.

[0033] like Figure 1 As shown, in a preferred embodiment of this application, the anti-reverse ratchet 3 includes a pawl and a ratchet. The pawl is disposed on the end cap 12, and the ratchet is integrated on the thrust head 22. The pawl and the ratchet mesh with each other when the shaft reverses to prevent reversal.

[0034] Specifically, the anti-reverse ratchet 3 is the core component for one-way stop. The ratchet gear ring is integrated with the thrust head 22, and the pawl is mounted on the fixed end cover 12 or housing 13. When the rotating shaft is running normally, the ratchet and the pawl slide relative to each other; when the rotating shaft has a tendency to reverse, the pawl and the ratchet teeth mesh and lock instantly, restricting the shaft to rotate in one direction and providing reliable reverse protection.

[0035] like Figure 1 As shown, in a preferred embodiment of this application, the sliding bearing device further includes a vent plug 5, wherein the vent plug 5 is disposed on the end cover 12 and communicates with the inner cavity 11, for adding lubricating oil and venting gas from the inner cavity 11.

[0036] Specifically, the vent plug 5 is mounted on the left side of the end cap 12 and communicates with the inner cavity 11 of the housing. The vent plug 5 has a dual function: it can be used as a lubrication hole for adding lubricating oil to the inner cavity 11, facilitating daily oil replenishment and lubrication operations; it can also be used as an exhaust channel to promptly discharge air and gas accumulated in the inner cavity 11 during operation, avoiding air resistance that could affect the normal circulation and lubrication effect of the lubricating oil. At the same time, it can ensure stable oil pressure and smooth oil passage in the cavity, and work with the bearing sealing structure to maintain the lubricating oil level and lubrication environment in the cavity, reducing the interference of air bubbles on the formation of the dynamic pressure oil film, and ensuring that the sliding bearing 2 and the anti-reverse ratchet 3 are always in good lubrication conditions.

[0037] like Figure 1 As shown, in a preferred embodiment of this application, the sliding bearing device further includes a bearing isolator 6, wherein the bearing isolator 6 is disposed in the gap between the bushing portion of the thrust head 22 and the end cover 12, and prevents the lubricating oil in the inner cavity from leaking out through the end of the bushing portion through the labyrinth seal or magnetic seal principle, and prevents external dust from entering the inner cavity.

[0038] Specifically, the bearing isolator 6 is integrally arranged in the annular assembly gap between the bushing portion of the thrust head 22 and the end cover 12, forming a precision-fit installation structure with the outer wall of the thrust head and the inner side of the end cover. The bearing isolator 6 adopts a composite sealing principle combining labyrinth seal and magnetic seal. On the one hand, it can effectively prevent the lubricating grease and oil in the bearing housing cavity from leaking outward, splashing oil, and leaking outward along the neck gap of the bushing portion, continuously maintaining a reasonable oil level and lubrication condition inside the bearing cavity. On the other hand, it can isolate dust, particulate matter, water vapor, corrosive impurities, etc. from the external environment from entering the bearing cavity, avoiding impurities from mixing into the lubricating oil and causing oil quality deterioration, wear of the bearing shell and ratchet pawl working surfaces, jamming, and other faults. Therefore, it can maintain the cleanliness of the lubricating medium inside the bearing and the reliability of the seal for a long time, significantly reducing the frequency of maintenance due to oil leakage and dust ingress, and improving the stability and service life of the entire anti-reverse sliding bearing device under harsh working conditions for long-term continuous operation.

[0039] like Figure 1 As shown, in a preferred embodiment of this application, the sliding bearing device further includes an adjusting nut 7, which is screwed onto the end of the shaft and the axial clearance is finely adjusted by rotating the adjusting nut 7 to adjust the axial position of the shaft.

[0040] Specifically, the adjusting nut 7 is threadedly fitted onto the external thread section of the rotating shaft end, and forms an axial limiting fit structure with the end cover and the end face of the thrust head. By rotating the adjusting nut 7 in the forward or reverse direction, the shaft body and the thrust head can be precisely pushed to make a slight axial displacement, which can flexibly and accurately adjust the axial installation position of the pump shaft and all rotation-related components, facilitating on-site alignment and eliminating the effects of thermal expansion.

[0041] like Figure 1 As shown, in a preferred embodiment of this application, the sliding bearing device further includes an oil drain pipe 8, which is disposed on the base plate 14 and communicates with the inner cavity 11, for draining old lubricating oil from the outer casing 1 during maintenance.

[0042] Specifically, in the sliding bearing device, the oil drain pipe 8 is vertically installed at the low position of the base plate 14 and is interconnected with the inner cavity 11 of the sliding bearing device. The oil drain pipe 8 adopts a bottom-mounted low-position layout structure, fitting the lowest point of the inner cavity of the outer shell 1, and can collect all used old lubricating oil, oil stains, deposited impurities, and emulsified deteriorated lubricating media in the bearing inner cavity 11. When the equipment is shut down for maintenance or periodic oil change, the waste lubricating oil accumulated inside the outer shell 1 can be quickly and completely drained by opening the sealing structure of the oil drain pipe 8, leaving no dead corners. This facilitates subsequent cleaning of the bearing cavity and replacement of new lubricating oil, simplifies the maintenance process, and improves the efficiency of oil change maintenance. At the same time, it can also promptly remove metal shavings and dirt deposited at the bottom, preventing impurities from accumulating for a long time and aggravating the wear of core components such as the guide bearing 24 and the anti-reverse ratchet 3, thus ensuring the long-term reliable operation of the sliding bearing device.

[0043] Preferably, the drain pipe 8 includes a horizontal pipe and a vertical pipe, forming an L-shaped pipe structure. An on / off valve is provided on the horizontal pipe to facilitate opening and closing of the drain pipe 8.

[0044] like Figure 1 As shown, in a preferred embodiment of this application, the sliding bearing device further includes: an oil baffle 100, a sealing ring 200, and an oil baffle sleeve 300. The oil baffle 100 is sleeved on the shaft to prevent lubricating oil from leaking out from the connection gap between the sliding bearing device and the shaft. The sealing ring 200 is installed at the end of the oil baffle 100 to prevent lubricating oil from overflowing from the oil baffle 100. The oil baffle sleeve 300 is disposed on the end cover 12 to increase the flow area of ​​the lubricating oil.

[0045] Specifically, the oil baffle 100 is mounted on the base plate 14, which can effectively prevent the lubricating oil in the bearing cavity from flowing outward along the axial direction from the annular connection gap between the sliding bearing device and the rotating shaft, forming the first axial barrier protection for the lubricating oil, maintaining the stability of the lubricating oil level inside the bearing cavity, and avoiding grease loss and waste.

[0046] The sealing ring 200 is fixedly installed at the outer end of the oil baffle cylinder 100, forming an axial limiting and sealing structure. It can further block the path of lubricating oil climbing up and overflowing from the journal surface into the oil baffle cylinder 100, enhance the axial oil sealing effect, prevent oil splashing and seepage, and reduce the pollution of the surrounding environment caused by lubricating oil splashing and leakage.

[0047] The oil baffle 300 is fixedly mounted on the inner side of the end cap 12. The overall design adopts an irregular expansion structure, which not only regulates the flow path of the lubricating oil, but also greatly increases the contact area with the lubricating oil and the fluid flow area, improving the circulation state of the lubricating oil in the cavity. At the same time, the larger contact heat exchange area assists in the heat dissipation and cooling of the lubricating oil. Together with the built-in cooler, it controls the operating temperature rise of the bearing, ensuring that the guide pad, thrust pad and anti-reverse ratchet mechanism are always in good lubrication and temperature control conditions, improving the operational stability and service life of the entire bearing device.

[0048] like Figure 1 As shown, in a preferred embodiment of this application, the sliding bearing device further includes an oil level gauge 9, wherein the oil level gauge 9 is disposed on the side of the housing 13 opposite to the cooler 4, for displaying the internal oil level in real time.

[0049] Specifically, the oil level gauge 9 is installed on the outer wall of one side of the housing 13, for example, on the side opposite to the built-in cooler 4, and the upper and lower ends of the oil level gauge 9 form a communication structure with the inner cavity 11 of the bearing device, maintaining synchronous communication with the lubricating oil cavity inside the housing 13 in terms of pressure and liquid level.

[0050] The oil level gauge 9 can adopt a transparent window type or magnetic flip plate type liquid level gauge structure, which can display the liquid level of the lubricating oil inside the housing 13 in real time and intuitively. This allows maintenance personnel to monitor the oil storage status in the bearing cavity at any time. It can promptly detect problems such as insufficient oil, oil overflow, oil leakage, and abnormal oil level fluctuations, facilitating timely replenishment of lubricating oil and troubleshooting of leakage faults. This ensures that components such as the bearing guide pad 24, thrust pad 23, and anti-reverse ratchet 3 are always under reasonable oil level lubrication conditions, maintaining stable formation of the hydrodynamic oil film. It avoids problems such as insufficient lubrication and dry friction wear due to excessively low oil level, or excessive oil level causing oil stirring, overheating, oil leakage, and excessive temperature rise, effectively improving the safety of equipment operation and the convenience of daily inspection and maintenance.

[0051] This application combines the supporting function of the sliding bearing, the cooling function of the cooler, and the one-way stopping function of the anti-reverse ratchet in terms of structure and function. Compared with the prior art where the bearing and the anti-reverse device are separate, the structure of this application is more compact and the axial dimension is shorter. Due to the reduction of external connection links, the number of system failure points is significantly reduced, making it more suitable for long-term continuous operation.

[0052] By integrating the adjusting nut and thrust head assembly, flexible adjustment of axial position and balanced load distribution are achieved, combining the advantages of high load-bearing capacity and high safety.

[0053] Compared to rolling bearings, this sliding bearing assembly can withstand greater axial loads and radial impacts, while providing reliable reverse protection through an integrated ratchet mechanism. It is suitable for heavy-duty, high-inertia rotating machinery operating conditions that require protection against reversal.

[0054] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A sliding bearing device integrating an anti-reverse mechanism, characterized in that, include: The outer shell is a cylindrical structure, with its middle part sleeved on the outside of the shaft, and its interior encloses an inner cavity; A sliding bearing, wherein the sliding bearing is located in the inner cavity and is sleeved on the shaft; An anti-reverse ratchet is provided between the housing and the sliding bearing to limit unidirectional rotation of the shaft; A cooler is disposed in the inner cavity and is used to control the operating temperature of the sliding bearing device.

2. The sliding bearing device according to claim 1, characterized in that, The housing includes an end cap, a housing, and a bottom plate, wherein the housing is a cylindrical structure, the end cap is sealed to the upper part of the housing, and the bottom plate is sealed to the lower part of the housing.

3. The sliding bearing device according to claim 2, characterized in that, The sliding bearing includes: A bearing seat, wherein the bearing seat is disposed on the base plate; A thrust head, which is sleeved on the outside of the shaft; Thrust pad, which is disposed on the bearing seat and cooperates with the thrust head to bear axial load; The guide plate is sleeved on the outside of the thrust head and is used to bear radial loads; There is a gap between the thrust head, the thrust pad, and the guide pad, and the lubricating oil is distributed in the gap to form an oil film to lubricate and prevent friction.

4. The sliding bearing device according to claim 3, characterized in that, The anti-reverse ratchet includes a pawl and a ratchet, wherein the pawl is disposed on the end cap and the ratchet is integrated into the thrust head, and the pawl and the ratchet mesh with each other when the shaft reverses to play an anti-reverse role.

5. The sliding bearing device according to claim 2, characterized in that, The sliding bearing device further includes a vent plug, wherein the vent plug is disposed on the end cap and communicates with the inner cavity, and is used to add lubricating oil and remove gas from the inner cavity.

6. The sliding bearing device according to claim 2, characterized in that, The sliding bearing device further includes a bearing isolator, wherein the bearing isolator is disposed in the gap between the bushing portion of the thrust head and the end cover, and prevents the lubricating oil in the inner cavity from leaking out through the end of the bushing portion and prevents external dust from entering the inner cavity through the labyrinth seal or magnetic seal principle.

7. The sliding bearing device according to claim 2, characterized in that, The sliding bearing device further includes an adjusting nut, wherein the adjusting nut is screwed onto the end of the shaft, and the axial position of the shaft is adjusted by rotation to achieve fine adjustment of the axial clearance.

8. The sliding bearing device according to claim 2, characterized in that, The sliding bearing device further includes an oil drain pipe, wherein the oil drain pipe is disposed on the base plate and communicates with the inner cavity, and is used to drain the old lubricating oil in the housing during maintenance.

9. The sliding bearing device according to claim 2, characterized in that, The sliding bearing device further includes: An oil baffle is fitted onto the shaft to prevent lubricating oil from leaking out from the connection gap between the sliding bearing device and the shaft. A sealing ring is installed at the end of the oil baffle cylinder to prevent lubricating oil from overflowing into the oil baffle cylinder; An oil baffle sleeve is provided on the end cap to increase the flow area of ​​lubricating oil.

10. The sliding bearing device according to claim 2, characterized in that, The sliding bearing device further includes an oil level gauge, wherein the oil level gauge is disposed on the circumference of the side of the housing and is used to display the internal oil level in real time.

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