Combined sealing bearing seat

Abstract

The invention relates to the technical field of bearing seats, and discloses a combined sealing bearing seat which comprises a lower base and a bearing seat upper cover, the bearing seat upper cover is arranged at the top of the lower base, a semicircular bushing is arranged between the top of the lower base and the bearing seat upper cover, bushing flanges are arranged at the two ends of the semicircular bushing, and inner sealing washers are arranged on the outer sides of the bushing flanges. An inner sealing gasket is arranged on the outer side of the screw rod, an outer sealing gasket is arranged on the outer side of the inner sealing gasket, a nest disc is arranged on the outer side of the outer sealing gasket, and a sealing convex ring is arranged on the inner wall of the outer sealing gasket. And the multiple elastic sealing structures in the upper fixing ring are further pressed through the upper fixing ring, so that the sealing structures can compensate the abraded part, the good sealing effect is continuously achieved, the service life of the combined sealing structure is prolonged, and the sealing service life of the bearing seat is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of bearing seats, in particular to a combined sealed bearing seat. Background Art

[0002] The bearing seat is mainly used to support the bearing and bear the load. It is usually of two types: fixed and floating. The sealing part refers to the structure that prevents the leakage of lubricant and the entry of external pollutants.

[0003] The existing Chinese patent (CN210265545U) discloses a sealed bearing seat, including a bearing seat, a bearing sealing cover that cooperates with the bearing seat to form a bearing cavity, and a bearing fixed in the bearing cavity. A transmission shaft passes through the bearing seat, the bearing and the bearing sealing cover in sequence. A first sealing ring in contact with the transmission shaft is provided inside the bearing seat; a second sealing ring in contact with the transmission shaft is provided inside the bearing sealing cover; the first sealing ring and the second sealing ring are in a "concave" shape. The utility model of the bearing seat with a sealing ring, through the "concave" shaped sealing ring installed on the inner side of the bearing seat and the bearing sealing cover, isolates the inner cavity of the bearing seat from the outside world, prevents sand and gravel impurities from entering the inner cavity of the bearing seat, thereby improving the service life and stability of the bearing, and is particularly suitable for agricultural machinery and equipment, with good practicality and market promotion value.

[0004] In the prior art, when sealing the bearing seat, sealing gaskets of various shapes are often used to achieve sealing. However, during the long-term use of the bearing seat, the sealing gasket will be worn out, thereby affecting the sealing effect of the bearing seat. Summary of the invention

[0005] The object of the present invention is to provide a combined sealed bearing seat to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a combined sealed bearing seat, comprising: a lower base and a bearing seat upper cover, the top of the lower base is provided with a bearing seat upper cover, a semicircular shaft liner is provided between the top of the lower base and the bearing seat upper cover, shaft liner flanges are provided at both ends of the semicircular shaft liner, an inner sealing gasket is provided on the outer side of the shaft liner flange, an outer sealing gasket is provided on the outer side of the inner sealing gasket, a socket is provided on the outer side of the outer sealing gasket, a sealing convex ring is provided on the inner wall of the outer sealing gasket, an upper fixing ring is provided on the outer end of the socket, a connecting leg is provided on the outer wall of the upper fixing ring, a fixing screw is provided on the lower base and the outer wall of the bearing seat upper cover, and one end of the connecting leg is connected to the fixing screw by a nut.

[0007] As a further explanation of the present invention, through holes are opened inside both sides of the lower base and the bearing seat upper cover, connecting bolts are arranged in the through holes on both sides of the lower base and the bearing seat upper cover, and an oil filling cup is arranged in the center of the top of the bearing seat upper cover.

[0008] As a further description of the present invention, a bearing is provided on the inner wall of the middle portion of the semicircular bushing, and a main shaft is provided on the inner ring of the bearing.

[0009] As a further explanation of the present invention, a bearing washer is provided on the inner wall of the semicircular shaft liner. The bearing washer is located at both ends of the bearing, and one end of the bearing washer is abutted against one end of the inner sealing washer.

[0010] As a further description of the present invention, the sealing convex ring is in contact with the outer wall of the main shaft, there are multiple sealing convex rings, and the multiple sealing convex rings are arranged at equal distances on the inner wall of the outer sealing gasket.

[0011] As a further description of the present invention, a flange is provided at one end of the inner sealing gasket, and the flange of the inner sealing gasket is in abutment with the shaft liner flange.

[0012] As a further illustration of the present invention, a flange is provided at one end of the outer sealing gasket, and the flange of the outer sealing gasket is abutted against the flange of the inner sealing gasket.

[0013] As a further explanation of the present invention, the nest is in the shape of a disk with a central opening, one end of the nest is in contact with an outer sealing gasket, and one end of the outer sealing gasket is in contact with an inner wall of the nest.

[0014] As a further explanation of the present invention, an outer connecting ring is provided at the outer end of the upper fixing ring, a sealing ring is provided on the outer side of the outer connecting ring, an L-shaped ring groove is provided on the inner wall of the outer connecting ring, and a convex ring matching the L-shaped ring groove is provided on the outer wall of the sealing ring.

[0015] As a further description of the present invention, one end of the connecting leg extends to the shaft liner flange, and a through hole for a fixing screw to pass through is provided in the connecting leg.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention realizes that when the combined sealed bearing seat is used, the bearing gasket, inner sealing gasket, outer sealing gasket and nest plate are arranged in sequence from the inside to the outside at both ends of the bearing seat, and the above-mentioned multiple combined sealing structures are tightly pressed against the two ends of the bearing seat through connecting legs and fixing screws. These combined sealing structures have a certain elasticity. When the bearing seat is used for a long time, the sealing gasket will wear out. At this time, by further tightening the nut on the fixing screw, the elastic multiple sealing structure inside it is further compressed through the upper fixing ring, so that the sealing structure can compensate for the worn part and continue to have a good sealing effect, thereby improving the service life of the combined sealing structure and the sealing service life of the bearing seat.

[0017] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 An exploded view of a combined sealed bearing seat of the present invention; Figure 2 A three-dimensional diagram of a combined sealed bearing seat of the present invention; Figure 3 A three-dimensional diagram of a combined sealed bearing seat of the present invention from another perspective; Figure 4 This is a front view of a combined sealed bearing seat of the present invention; Figure 5 It is a left side view of a combined sealed bearing seat of the present invention; Figure 6 A three-dimensional diagram of a combined sealed bearing seat of the present invention from another perspective; Figure 7 A top view of a combined sealed bearing seat of the present invention; Figure 8 This is a main sectional view of a combined sealed bearing seat of the present invention; Fig. 9 for Figure 8 The enlarged structural diagram at A in the middle; Fig.10 The figure is a schematic structural diagram of a combined sealed bearing seat of the present invention.

[0019] In the figure: 1. lower base; 2. bearing seat upper cover; 3. connecting bolts; 4. oil filling cup; 5. semicircular bushing; 6. bushing flange; 7. fixing screw; 8. inner sealing gasket; 9. outer sealing gasket; 10. sealing convex ring; 11. nest plate; 12. upper fixing ring; 13. connecting leg; 14. outer connecting ring; 15. sealing ring; 16. main shaft; 17. bearing; 18. bearing gasket. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Example 1: Please refer to Figure 1-Figure 5 The present invention provides a technical solution: a combined sealed bearing seat, comprising: a lower base 1 and a bearing seat upper cover 2, the lower base 1 is provided with a bearing seat upper cover 2 on the top, the lower base 1: as the basic support structure of the entire bearing seat, it bears the weight of components such as the bearing and the upper cover, provides a stable support, and ensures the stability and reliability of the bearing seat during operation. The bearing seat upper cover 2: cooperates with the lower base 1 to form a closed space for installing and fixing the bearing. Protect the bearing from interference from the external environment, while providing necessary installation and fixing support.

[0022] A semicircular bushing 5 is provided between the top of the lower base 1 and the upper cover 2 of the bearing seat. The semicircular bushing 5 is located between the bearing and the bearing seat and plays a role in supporting and lubricating the bearing, reducing the friction between the bearing and the bearing seat, extending the service life of the bearing, and improving the operating efficiency of the system.

[0023] Both ends of the semicircular shaft liner 5 are provided with shaft liner flanges 6, which fix the semicircular shaft liner 5 to prevent it from displacement or falling off during operation. Ensure the stability and reliability of the semicircular shaft liner 5, thereby ensuring the normal operation of the entire bearing seat. At the same time, provide support for the inner sealing gasket 8.

[0024] An inner sealing gasket 8 is provided on the outer side of the shaft liner flange 6. The inner sealing gasket 8 on the outer side of the shaft liner flange 6 serves as the first sealing barrier to prevent external impurities from entering the interior of the bearing seat. The sealing performance of the bearing seat is improved to protect the bearing from contamination and damage. An outer sealing gasket 9 is provided on the outer side of the inner sealing gasket 8. The outer sealing gasket 9 serves as the second sealing barrier to further enhance the sealing effect of the bearing seat. Together with the outer sealing gasket 8, a multiple sealing structure is formed to improve the sealing performance and service life of the bearing seat.

[0025] A nest 11 is provided on the outside of the outer sealing gasket 9, and the nest 11 supports and fixes the outer sealing gasket 9 and the sealing convex ring 10 to ensure their stability and sealing effect. Provide a stable support structure to ensure the reliability and durability of the multiple sealing structure. A sealing convex ring 10 is provided on the inner wall of the outer sealing gasket 9, and the sealing convex ring 10 is located on the inner wall of the outer sealing gasket 9 to enhance the sealing effect, prevent liquid or gas leakage, improve the tightness of the seal, and ensure the cleanliness and stability of the internal environment of the bearing seat. The sealing convex ring 10 further improves the tightness of the seal, reduces the possibility of leakage, and ensures the stability and cleanliness of the internal environment of the bearing seat. An upper fixing ring 12 is provided at the outer end of the nest 11, and the upper fixing ring 12 fixes the nest 11 and the multiple sealing structure to ensure their stability at both ends of the bearing seat. The upper fixing ring 12 firmly fixes the nest 11, the outer sealing gasket 9 and other components together, enhancing the overall structure and sealing performance of the bearing seat.

[0026] The multiple sealing structures are fastened and pressed by connecting the connecting legs 13 and the fixing screws 7. The connecting legs 13 provide a connection point for the fixing screws 7, making the entire bearing seat structure more compact and stable, and also convenient for installation and disassembly. The outer wall of the upper fixing ring 12 is provided with connecting legs 13, and the outer walls of the lower base 1 and the upper cover 2 of the bearing seat are provided with fixing screws 7. One end of the connecting legs 13 is connected to the fixing screws 7 by nuts. The connecting legs 13 connect the upper fixing ring 12 and the fixing screws 7 to transmit the fastening force. The fixing screws 7 tightly connect the entire bearing seat structure together, ensuring the rigidity and stability of the bearing seat, and also facilitating adjustment and calibration. Through the nut connection, the upper fixing ring 12 and the multiple sealing structures are tightly pressed against both ends of the bearing seat to ensure the sealing effect. The nut connection design makes the installation and disassembly of the bearing seat easier and faster, and also facilitates the adjustment and maintenance of the bearing seat when necessary. In addition, by tightening the nuts, the sealing performance and stability of the bearing seat can be further enhanced.

[0027] Through holes are provided inside the lower base 1 and the upper cover 2 of the bearing seat, and connecting bolts 3 are provided in the through holes on both sides of the lower base 1 and the upper cover 2 of the bearing seat, and an oil filling cup 4 is provided in the center of the top of the upper cover 2 of the bearing seat. The design of the through holes enables the lower base and the upper cover of the bearing seat to be fixedly connected by connecting bolts, thereby forming a stable and closed bearing seat structure. This design not only enhances the rigidity and stability of the bearing seat, but also facilitates installation and disassembly, and facilitates subsequent maintenance and maintenance. The connecting bolt 3 is used as a fixing part, which passes through the through holes of the lower base 1 and the upper cover 2 of the bearing seat and tightens the nut to tightly connect the two together. This connection method is not only simple and reliable, but also can withstand large axial and radial loads, ensuring the stability and safety of the bearing seat during operation. The design of the oil filling cup 4 enables the user to easily add lubricant to the inside of the bearing seat, thereby maintaining the good operating condition of the bearing. Regularly adding lubricants can reduce the friction and wear of the bearing, extend its service life, and reduce energy consumption. At the same time, the position design of the oil filling cup 4 is also convenient for observing and checking the use of the lubricant, so as to replenish or replace it in time.

[0028] A bearing 17 is provided on the inner wall of the middle part of the semicircular bushing 5, and a spindle 16 is provided on the inner ring of the bearing 17. The semicircular bushing 5 serves as a supporting structure for the bearing seat, and its inner wall is designed with a groove for installing the bearing 17. The installation of the bearing 17 not only enhances the bearing capacity and operation accuracy of the bearing seat, but also reduces the friction and wear between the spindle 16 and the bearing seat. This design enables the bearing seat to withstand a greater load while maintaining the stable operation of the spindle 16, thereby improving the performance and reliability of the entire mechanical system. The spindle 16, as a key component in the mechanical system, is installed in the inner ring of the bearing 17 to achieve a stable connection with the bearing seat. The supporting role of the bearing 17 enables the spindle to maintain high precision and low friction during operation, thereby improving the operating efficiency and stability of the mechanical system. In addition, the design of the bearing 17 can also absorb and disperse the vibration and impact force generated by the spindle during operation, further extending the service life of the spindle and the bearing seat.

[0029] Example 2: Please refer to Figure 1-Figure 10 The present invention provides a technical solution: a combined sealed bearing seat, comprising: a lower base 1 and a bearing seat upper cover 2, the lower base 1 is provided with a bearing seat upper cover 2 on the top, the lower base 1: as the basic support structure of the entire bearing seat, it bears the weight of components such as the bearing and the upper cover, provides a stable support, and ensures the stability and reliability of the bearing seat during operation. The bearing seat upper cover 2: cooperates with the lower base 1 to form a closed space for installing and fixing the bearing. Protect the bearing from interference from the external environment, while providing necessary installation and fixing support.

[0030] A semicircular bushing 5 is provided between the top of the lower base 1 and the upper cover 2 of the bearing seat. The semicircular bushing 5 is located between the bearing and the bearing seat and plays a role in supporting and lubricating the bearing, reducing the friction between the bearing and the bearing seat, extending the service life of the bearing, and improving the operating efficiency of the system.

[0031] Both ends of the semicircular shaft liner 5 are provided with shaft liner flanges 6, which fix the semicircular shaft liner 5 to prevent it from displacement or falling off during operation. Ensure the stability and reliability of the semicircular shaft liner 5, thereby ensuring the normal operation of the entire bearing seat. At the same time, provide support for the inner sealing gasket 8.

[0032] An inner sealing gasket 8 is provided on the outer side of the shaft liner flange 6. The inner sealing gasket 8 on the outer side of the shaft liner flange 6 serves as the first sealing barrier to prevent external impurities from entering the interior of the bearing seat. The sealing performance of the bearing seat is improved to protect the bearing from contamination and damage. An outer sealing gasket 9 is provided on the outer side of the inner sealing gasket 8. The outer sealing gasket 9 serves as the second sealing barrier to further enhance the sealing effect of the bearing seat. Together with the outer sealing gasket 8, a multiple sealing structure is formed to improve the sealing performance and service life of the bearing seat.

[0033] A nest 11 is provided on the outside of the outer sealing gasket 9, and the nest 11 supports and fixes the outer sealing gasket 9 and the sealing convex ring 10 to ensure their stability and sealing effect. Provide a stable support structure to ensure the reliability and durability of the multiple sealing structure. A sealing convex ring 10 is provided on the inner wall of the outer sealing gasket 9, and the sealing convex ring 10 is located on the inner wall of the outer sealing gasket 9 to enhance the sealing effect, prevent liquid or gas leakage, improve the tightness of the seal, and ensure the cleanliness and stability of the internal environment of the bearing seat. The sealing convex ring 10 further improves the tightness of the seal, reduces the possibility of leakage, and ensures the stability and cleanliness of the internal environment of the bearing seat. An upper fixing ring 12 is provided at the outer end of the nest 11, and the upper fixing ring 12 fixes the nest 11 and the multiple sealing structure to ensure their stability at both ends of the bearing seat. The upper fixing ring 12 firmly fixes the nest 11, the outer sealing gasket 9 and other components together, enhancing the overall structure and sealing performance of the bearing seat.

[0034] The multiple sealing structures are fastened and pressed by connecting the connecting legs 13 and the fixing screws 7. The connecting legs 13 provide a connection point for the fixing screws 7, making the entire bearing seat structure more compact and stable, and also convenient for installation and disassembly. The outer wall of the upper fixing ring 12 is provided with connecting legs 13, and the outer walls of the lower base 1 and the upper cover 2 of the bearing seat are provided with fixing screws 7. One end of the connecting legs 13 is connected to the fixing screws 7 by nuts. The connecting legs 13 connect the upper fixing ring 12 and the fixing screws 7 to transmit the fastening force. The fixing screws 7 tightly connect the entire bearing seat structure together, ensuring the rigidity and stability of the bearing seat, and also facilitating adjustment and calibration. Through the nut connection, the upper fixing ring 12 and the multiple sealing structures are tightly pressed against both ends of the bearing seat to ensure the sealing effect. The nut connection design makes the installation and disassembly of the bearing seat easier and faster, and also facilitates the adjustment and maintenance of the bearing seat when necessary. In addition, by tightening the nuts, the sealing performance and stability of the bearing seat can be further enhanced.

[0035] Through holes are provided inside the lower base 1 and the upper cover 2 of the bearing seat, and connecting bolts 3 are provided in the through holes on both sides of the lower base 1 and the upper cover 2 of the bearing seat, and an oil filling cup 4 is provided in the center of the top of the upper cover 2 of the bearing seat. The design of the through holes enables the lower base and the upper cover of the bearing seat to be fixedly connected by connecting bolts, thereby forming a stable and closed bearing seat structure. This design not only enhances the rigidity and stability of the bearing seat, but also facilitates installation and disassembly, and facilitates subsequent maintenance and maintenance. The connecting bolt 3 is used as a fixing part, which passes through the through holes of the lower base 1 and the upper cover 2 of the bearing seat and tightens the nut to tightly connect the two together. This connection method is not only simple and reliable, but also can withstand large axial and radial loads, ensuring the stability and safety of the bearing seat during operation. The design of the oil filling cup 4 enables the user to easily add lubricant to the inside of the bearing seat, thereby maintaining the good operating condition of the bearing. Regularly adding lubricants can reduce the friction and wear of the bearing, extend its service life, and reduce energy consumption. At the same time, the position design of the oil filling cup 4 is also convenient for observing and checking the use of the lubricant, so as to replenish or replace it in time.

[0036] A bearing 17 is provided on the inner wall of the middle part of the semicircular bushing 5, and a spindle 16 is provided on the inner ring of the bearing 17. The semicircular bushing 5 serves as a supporting structure for the bearing seat, and its inner wall is designed with a groove for installing the bearing 17. The installation of the bearing 17 not only enhances the bearing capacity and operation accuracy of the bearing seat, but also reduces the friction and wear between the spindle 16 and the bearing seat. This design enables the bearing seat to withstand a greater load while maintaining the stable operation of the spindle 16, thereby improving the performance and reliability of the entire mechanical system. The spindle 16, as a key component in the mechanical system, is installed in the inner ring of the bearing 17 to achieve a stable connection with the bearing seat. The supporting role of the bearing 17 enables the spindle to maintain high precision and low friction during operation, thereby improving the operating efficiency and stability of the mechanical system. In addition, the design of the bearing 17 can also absorb and disperse the vibration and impact force generated by the spindle during operation, further extending the service life of the spindle and the bearing seat.

[0037] In this embodiment, the inner wall of the semicircular bushing 5 is provided with a bearing washer 18, which is located at both ends of the bearing 17, and one end of the bearing washer 18 abuts against one end of the inner sealing washer 8. The arrangement of the bearing washer 18 effectively supports the bearing 17 to prevent it from being displaced or damaged during operation. At the same time, the abutment between the bearing washer 18 and the inner sealing washer 8 enhances the sealing inside the bearing seat, prevents external impurities or liquids from entering the bearing area, and thus prolongs the service life of the bearing.

[0038] The sealing convex ring 10 contacts the outer wall of the main shaft 16. There are multiple sealing convex rings 10, and the multiple sealing convex rings 10 are arranged equidistantly on the inner wall of the outer sealing gasket 9. The setting of the sealing convex ring 10 provides an additional sealing layer, effectively preventing the main shaft 16 from directly contacting the external environment and reducing the risk of leakage. The equidistant arrangement of multiple sealing convex rings 10 further enhances the sealing effect and improves the sealing performance of the entire bearing seat.

[0039] A flange is provided at one end of the inner sealing gasket 8, and the flange of the inner sealing gasket 8 abuts against the shaft liner flange 6. The flange design of the inner sealing gasket 8 enhances the connection stability between it and the shaft liner flange 6, ensuring the sealing inside the bearing seat. This design enables the inner sealing gasket 8 to more effectively prevent external impurities or liquids from entering the bearing seat, thereby protecting the bearing and other key components.

[0040] A flange is provided at one end of the outer sealing gasket 9, and the flange of the outer sealing gasket 9 abuts against the flange of the inner sealing gasket 8. The flange of the outer sealing gasket 9 abuts against the flange of the inner sealing gasket 8, forming another sealing barrier. This double sealing design further improves the sealing performance of the bearing seat and ensures the stability and safety of the main shaft 16 during operation.

[0041] The socket 11 is in the shape of a disk with a central opening, one end of the socket 11 abuts against the outer sealing gasket 9, and one end of the outer sealing gasket 9 abuts against the inner wall of the socket 11. The design of the socket 11 not only provides an additional support structure, but also enhances the sealing effect of the outer sealing gasket 9. The mutual abutment between the socket 11 and the outer sealing gasket 9 ensures the sealing inside the bearing seat and prevents interference from the external environment.

[0042] An outer connecting ring 14 is provided at the outer end of the upper fixing ring 12, and a sealing ring 15 is provided on the outer side of the outer connecting ring 14. An L-shaped ring groove is provided on the inner wall of the outer connecting ring 14, and a convex ring matching the L-shaped ring groove is provided on the outer wall of the sealing ring 15. The design of the outer connecting ring 14 and the sealing ring 15 provides additional connection and sealing functions. The L-shaped ring groove matches the convex ring on the sealing ring 15 to ensure the tight connection and sealing between the upper fixing ring 12 and the external structure. This design not only enhances the stability of the bearing seat, but also prevents interference and leakage from the external environment.

[0043] One end of the connecting leg 13 extends to the shaft liner flange 6, and a through hole is provided in the connecting leg 13 for the fixing screw 7 to pass through. The design of the connecting leg 13 enables the bearing seat to be connected to other structures or components through the fixing screw 7. The provision of the through hole facilitates the insertion and fixing of the fixing screw 7, thereby ensuring the stability and reliability of the bearing seat. This design enables the bearing seat to be easily installed and disassembled, and facilitates subsequent maintenance and servicing work.

[0044] When the combined sealed bearing seat is used, bearing washers, inner sealing washers, outer sealing washers, and dimples are arranged in sequence from the inside to the outside at both ends of the bearing seat, and the above-mentioned multiple combined sealing structures are tightly pressed against the two ends of the bearing seat through connecting legs 13 and fixing screws 7. These combined sealing structures have a certain elasticity. When the bearing seat is used for a long time, the sealing gasket will be worn. At this time, by further tightening the nut on the fixing screw 7, the elastic multiple sealing structure inside it is further compressed through the upper fixing ring 12, so that the sealing structure can compensate for the worn part and continue to have a good sealing effect, thereby improving the service life of the combined sealing structure and the sealing service life of the bearing seat.

[0045] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

Claims

1. A combined sealed bearing seat, comprising: A lower base (1) and a bearing seat upper cover (2), characterized in that: a bearing seat upper cover (2) is provided on the top of the lower base (1), a semicircular shaft liner (5) is provided between the top of the lower base (1) and the bearing seat upper cover (2), shaft liner flanges (6) are provided at both ends of the semicircular shaft liner (5), an inner sealing gasket (8) is provided on the outer side of the shaft liner flange (6), an outer sealing gasket (9) is provided on the outer side of the inner sealing gasket (8), a nest (11) is provided on the outer side of the outer sealing gasket (9), a sealing convex ring (10) is provided on the inner wall of the outer sealing gasket (9), an upper fixing ring (12) is provided on the outer end of the nest (11), a connecting leg (13) is provided on the outer wall of the upper fixing ring (12), a fixing screw (7) is provided on the outer wall of the lower base (1) and the bearing seat upper cover (2), and one end of the connecting leg (13) is connected to the fixing screw (7) by a nut.

2. A combined sealed bearing seat according to claim 1, characterized in that: Through holes are provided inside both sides of the lower base (1) and the bearing seat upper cover (2), connecting bolts (3) are provided in the through holes on both sides of the lower base (1) and the bearing seat upper cover (2), and an oil filling cup (4) is provided in the center of the top of the bearing seat upper cover (2).

3. The combined sealed bearing seat according to claim 1, characterized in that: A bearing (17) is provided on the inner wall of the middle portion of the semicircular shaft liner (5), and a main shaft (16) is provided on the inner ring of the bearing (17).

4. The combined sealed bearing seat according to claim 3, characterized in that: A bearing washer (18) is provided on the inner wall of the semicircular shaft liner (5). The bearing washer (18) is located at both ends of the bearing (17), and one end of the bearing washer (18) abuts against one end of the inner sealing washer (8).

5. The combined sealed bearing seat according to claim 3, characterized in that: The sealing convex ring (10) is in contact with the outer wall of the main shaft (16), and there are a plurality of the sealing convex rings (10), which are arranged at equal distances on the inner wall of the outer sealing gasket (9).

6. The combined sealed bearing seat according to claim 1, characterized in that: A flange is provided at one end of the inner sealing gasket (8), and the flange of the inner sealing gasket (8) is in contact with the shaft liner flange (6).

7. The combined sealed bearing seat according to claim 7, characterized in that: A flange is provided at one end of the outer sealing gasket (9), and the flange of the outer sealing gasket (9) abuts against the flange of the inner sealing gasket (8).

8. The combined sealed bearing seat according to claim 1, characterized in that: The nest (11) is in the shape of a disk with a central opening, one end of the nest (11) abuts against an outer sealing gasket (9), and one end of the outer sealing gasket (9) abuts against an inner wall of the nest (11).

9. The combined sealed bearing seat according to claim 1, characterized in that: An outer connecting ring (14) is provided at the outer end of the upper fixing ring (12), a sealing ring (15) is provided on the outer side of the outer connecting ring (14), an L-shaped ring groove is provided on the inner wall of the outer connecting ring (14), and a convex ring matching the L-shaped ring groove is provided on the outer wall of the sealing ring (15).

10. The combined sealed bearing seat according to claim 1, characterized in that: One end of the connecting leg (13) extends to the shaft liner flange (6), and a through hole for the fixing screw (7) to pass through is provided in the connecting leg (13).

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