A silent bearing for agricultural machinery with a multi-sealing mechanism

Abstract

The present application provides a silent bearing for agricultural machinery with a multiple sealing mechanism, which relates to a bearing for agricultural machinery and includes a bearing housing. Positioning holes are provided at the four corners of one side surface of the bearing housing. A support outer ring is provided in the middle of one side surface of the bearing housing. An annular mounting frame is movably clamped to the inner arc surface of the support outer ring. A lining ring is provided in the middle of the inner arc surface of the annular mounting frame. An annular positioning frame is movably sleeved on the outer arc surface of the lining ring. The water injection cavity is formed between the annular mounting frame and the annular positioning frame. Therefore, when the annular mounting frame rotates, the water inside will also rotate accordingly, and the generated water temperature difference will circulate the air in the middle. The circulating air will absorb the temperature brought by the water, and the airflow cooled by the temperature will be discharged from the flow holes to the bearing structure, so that the heat inside the bearing can be absorbed in time, and the heat dissipation effect is good. The bearing will not fail due to too high internal temperature, and the service life of the bearing is improved.

Description

Technical Field

[0001] The present invention relates to the field of agricultural machinery bearings, and more specifically, to a silent bearing for agricultural machinery with a multiple sealing mechanism. Background Art

[0002] Agricultural machinery bearings are one of the components widely used in agricultural machinery. They are mainly used to connect the disc-shaped plowing blades installed at the bottom of agricultural machinery. At present, the agricultural machinery bearings on the market still have various deficiencies and cannot meet the needs of production and life.

[0003] Existing agricultural machinery bearings are relatively easy to come into contact with the external environment, and the farming environment is complex, which easily leads to problems such as impurities and water stains entering the bearing interior and affecting its normal operation, thus making it inconvenient to use. Summary of the Invention

[0004] The purpose of the present invention is to provide a silent bearing for agricultural machinery with a multiple sealing mechanism. By symmetrically arranging annular sealing sheets on the front and rear sides inside the bearing outer ring, and a sealing strip is provided inside the annular sealing sheet. The annular sealing sheet can initially prevent the overflow of lubricating oil, reduce the pollution of external dust, and the sealing of the lubricating oil reduces the rolling friction between the bearing inner ring and the bearing outer ring, effectively reducing the frictional force, and thus effectively reducing the noise generated during the operation of the bearing.

[0005] To achieve the above-mentioned invention purpose, the present invention provides the following technical solutions:

[0006] A silent bearing for agricultural machinery with a multiple sealing mechanism to solve the above problems.

[0007] Specifically, this application is as follows:

[0008] It includes a bearing seat. Positioning holes are provided at the four corners on one side surface of the bearing seat. A support outer ring is provided in the middle of one side surface of the bearing seat. The inner arc surface of the support outer ring is movably clamped with an annular mounting frame. The middle part of the inner arc surface of the annular mounting frame is provided with a lining ring. The outer arc surface of the lining ring is movably sleeved with an annular positioning frame. An I-shaped ring is provided on one side of the annular positioning frame close to the annular mounting frame. A sealing cavity is provided between the I-shaped ring and the lining ring. The inner arc surface of the sealing cavity is movably connected with a sealing ring. The bottom end of the outer arc surface of the annular mounting frame is movably clamped with a locking ring. One end of the annular mounting frame penetrates outside the bearing seat and is lapped on the back of the bearing seat through the locking ring. The inner arc surface of the annular mounting frame is sleeved with a bearing structure;

[0009] The bearing structure includes an outer bearing ring movably sleeved inside an annular mounting bracket. A lubricating oil hole is provided in the middle of the outer arc surface of the outer bearing ring. A roller body is movably lapped on the inner arc surface of the outer bearing ring. A cage is connected to the outer arc surface of the roller body. A bearing inner ring is connected to the inner arc surface of the cage. The outer arc surface of the bearing inner ring is of an arc structure and is in rolling fit with the roller body. A sealing gasket ring is sleeved on the edge of the outer arc surface of the cage. Annular sealing sheets are movably clamped on both sides of the inner arc surface of the outer bearing ring.

[0010] As a preferred technical solution of the present application, a flow hole is provided on one side of the outer arc surface of the annular mounting bracket. The flow hole is correspondingly adapted to the lubricating oil hole. A water injection port is provided at the top of the outer arc surface of the annular mounting bracket. A water injection cavity is provided between the I-shaped ring and the top of the inner arc surface of the annular mounting bracket. One end of the water injection port penetrates into the water injection cavity.

[0011] As a preferred technical solution of the present application, a liquid discharge groove is provided between the annular mounting bracket and the annular positioning bracket. A dust-proof sealing ring is movably clamped on the inner arc surface of the liquid discharge groove. An arched pressing part is provided on the top surface of the dust-proof sealing ring. The top surface of the arched pressing part is movably lapped on the inner arc surface of the locking ring.

[0012] As a preferred technical solution of the present application, a first sealing lip is provided on one side of the dust-proof sealing ring close to the arched pressing part. An arc-shaped groove is provided on the top surface of the first sealing lip. An annular spring is movably sleeved on the inner arc surface of the arc-shaped groove. A second sealing lip is provided on one side of the bottom surface of the arched pressing part.

[0013] As a preferred technical solution of the present application, the dust-proof sealing ring is a hollow through structure. A sealing cover is movably clamped on the inner arc surface of the water injection port. Elastic hook parts are provided on both sides of the sealing cover. The number of cages is two. Sealing gasket rings are movably sleeved on one side of the outer arc surfaces of the two cages.

[0014] As a preferred technical solution of the present application, a water sealing ring is movably sleeved on the bottom surface of the inner arc surface of the water injection cavity. An extended water sealing lip is provided at one side edge of the water sealing ring. One end of the extended water sealing lip penetrates to the side opening of the liquid discharge groove.

[0015] As a preferred technical solution of the present application, a groove is provided on the outer arc surface of the water sealing ring. Ventilation holes are provided inside the groove of the water sealing ring. The number of ventilation holes is several and they are evenly distributed in a circular array on the outer arc surface of the water sealing ring.

[0016] As a preferred technical solution of the present application, a rubber base is movably sleeved in the groove on the outer arc surface of the water sealing ring. Outer side ends are provided on the top surface of the rubber base. The number of outer side ends is two and they are respectively arranged on both sides of the rubber base.

[0017] As a preferred technical solution of the present application, V-shaped water seal lips are provided at the tops of the outer ends on both sides. The tops of the V-shaped water seal lips are movably lapped on the bottom ends of the water injection ports, and the V-shaped water seal lips are all pressed against the inner arc surface of the annular mounting frame.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] In the solution of the present application:

[0020] 1. Since the cage is of a boss structure and made of elastic plastic material, during the working process, the vibration generated by the agricultural machinery will be first transmitted to the elastic cage, and thus part of the vibration is absorbed by it. At the same time, the boss-like structure can fit better on the inner ring of the bearing, and the connection between the two cages with a larger diameter at the tail can better ensure the stability of the roller body during rotation;

[0021] 2. Annular sealing sheets are symmetrically provided on the front and rear sides inside the outer ring of the bearing, and sealing strips are provided on the inner sides of the annular sealing sheets. The annular sealing sheets can initially prevent the overflow of lubricating oil, reduce the pollution of external dust, and reduce the rolling friction between the inner ring and the outer ring of the bearing by sealing the lubricating oil, effectively reducing the frictional force and thus effectively reducing the noise generated during the operation of the bearing;

[0022] 3. During actual use, the dust-proof sealing ring will contract inward and squeeze the shaft rod connected to the bearing, further improving the sealing between the dust-proof sealing ring and the annular positioning frame. The arched pressing part of the dust-proof sealing ring expands and directionally presses against the surface of the annular positioning frame, thereby increasing the sealing effect, and thus realizing the sealing protection of the agricultural machinery bearing, effectively avoiding the occurrence of grease leakage and the entry of dust and water droplets into the bearing, and effectively extending the service life of the bearing;

[0023] 4. The water injection cavity is formed between the annular mounting frame and the annular positioning frame. Therefore, when the annular mounting frame rotates, the water inside will also rotate accordingly, and the generated water temperature difference will cause the air in the middle to circulate. The cooled air flow is discharged from the flow holes to the bearing structure, where it can exchange heat with the bearing and absorb the heat inside the bearing in time. The heat dissipation effect is good, and the bearing will not fail due to too high internal temperature, improving the service life of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of a silent bearing for agricultural machinery with a multiple sealing mechanism provided by the present application;

[0025] Figure 2 It is a schematic diagram of the partial disassembled structure of a silent bearing for agricultural machinery with a multiple sealing mechanism provided by the present application;

[0026] Figure 3 Schematic diagram of the overall back structure of an agricultural machinery silent bearing with a multiple sealing mechanism provided for this application;

[0027] Figure 4 Schematic diagram of the disassembled internal structure of an agricultural machinery silent bearing with a multiple sealing mechanism provided for this application;

[0028] Figure 5 Schematic diagram of the sectional structure of an agricultural machinery silent bearing with a multiple sealing mechanism provided for this application;

[0029] Figure 6 Schematic diagram of the exploded structure of an agricultural machinery silent bearing with a multiple sealing mechanism provided for this application;

[0030] Figure 7 Schematic diagram of the partial sectional structure of an agricultural machinery silent bearing with a multiple sealing mechanism provided for this application;

[0031] Figure 8 Schematic diagram of the side sectional structure of an agricultural machinery silent bearing with a multiple sealing mechanism provided for this application;

[0032] Figure 9 Schematic diagram of the overall side sectional structure of an agricultural machinery silent bearing with a multiple sealing mechanism provided for this application;

[0033] Figure 10 Schematic diagram of the internal structure of an agricultural machinery silent bearing with a multiple sealing mechanism provided for this application;

[0034] Figure 11 Schematic diagram of the side sectional three - dimensional structure of an agricultural machinery silent bearing with a multiple sealing mechanism provided for this application.

[0035] Labels in the figure:

[0036] 1. Bearing seat; 2. Positioning hole; 3. Support outer ring;

[0037] 4. Ring mounting frame; 401. Inner lining ring; 402. Water injection port;

[0038] 5. Ring positioning frame; 501. I - shaped ring;

[0039] 6. Sealing cavity; 7. Sealing ring; 8. Locking ring;

[0040] 9. Bearing structure; 901. Bearing outer ring; 902. Lubricating oil hole; 903. Roller body; 904. Cage; 905. Bearing inner ring; 906. Annular sealing piece; 907. Sealing gasket ring;

[0041] 10. Flow hole; 11. Water injection chamber

[0042] 12. Drainage groove; 13. Dust-proof sealing ring; 131. Arch-shaped pressing part; 132. First sealing lip; 133. Arc-shaped groove; 134. Annular spring; 135. Second sealing lip

[0043] 14. Sealing cover; 141. Elastic clamping part

[0044] 15. Water sealing ring; 151. Extended sealing lip; 152. Ventilation hole

[0045] 16. Rubber base; 161. Outer end; 162. V-shaped water sealing lip Detailed implementation mode

[0046] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments.

[0047] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the present invention claimed, but merely represents some embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0048] It should be noted that, without conflict, the embodiments in the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0049] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0050] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention. In addition, terms such as "first", "second", etc. are only used for descriptive distinction and cannot be construed as indicating or implying relative importance.

[0051] Please refer to Figures 1 to 11 , the present invention provides a technical solution: an agricultural machinery silent bearing with a multi-sealing mechanism Embodiment 1

[0052] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 shown, this embodiment proposes an agricultural machinery silent bearing with a multi - seal mechanism, including a bearing seat 1. Positioning holes 2 are provided at the four corners of one side surface of the bearing seat 1. A support outer ring 3 is provided in the middle of one side surface of the bearing seat 1. An annular mounting frame 4 is movably clamped on the inner arc surface of the support outer ring 3. A lining ring 401 is provided in the middle of the inner arc surface of the annular mounting frame 4. An annular positioning frame 5 is movably sleeved on the outer arc surface of the lining ring 401. An I - shaped ring 501 is provided on one side of the annular positioning frame 5 close to the annular mounting frame 4. A sealing cavity 6 is provided between the I - shaped ring 501 and the lining ring 401. A sealing ring 7 is movably connected to the inner arc surface of the sealing cavity 6. The bottom end of the outer arc surface of the annular mounting frame 4 is movably clamped with a locking ring 8. One end of the annular mounting frame 4 penetrates outside the bearing seat 1 and is lapped on the back of the bearing seat 1 through the locking ring 8. A bearing structure 9 is sleeved on the inner arc surface of the annular mounting frame 4. The bearing structure 9 includes a bearing outer ring 901 movably sleeved inside the annular mounting frame 4. A lubricating oil hole 902 is provided in the middle of the outer arc surface of the bearing outer ring 901. A roller body 903 is movably lapped on the inner arc surface of the bearing outer ring 901. A cage 904 is connected to the outer arc surface of the roller body 903. A bearing inner ring 905 is connected to the inner arc surface of the cage 904. The outer arc surface of the bearing inner ring 905 is an arc structure and is in rolling fit with the roller body 903. A sealing gasket ring 907 is sleeved on the edge of the outer arc surface of the cage 904. Annular sealing pieces 906 are movably clamped on both sides of the inner arc surface of the bearing outer ring 901.

[0053] In this embodiment, the bearing seat 1 can be fixed at the bearing of the agricultural machinery through the positioning holes 2. At the same time, the support outer ring 3 is to lock the lubricating oil in the bearing structure 9 inside it. The lubricating oil hole 902 on the bearing outer ring 901 is convenient for the lubricating oil to flow into the bearing inner ring 905. The connection between the bearing inner ring 905 and the bearing outer ring 901 is through the cage 904 and the sealing gasket ring 907 in a sleeved manner. The cage 904 is in a boss structure and is made of elastic plastic material. Therefore, during the working process, the vibration generated by the agricultural machinery will be first transmitted to the elastic cage 904, and part of the vibration will be absorbed by it. At the same time, the boss - like structure can fit better on the bearing inner ring 905, and the connection between the two cages 904 with a larger diameter at the tail can better ensure the stability of the roller body 903 during rotation.

[0054] Among them, annular sealing sheets 906 are symmetrically arranged on the front and rear sides inside the bearing outer ring 901, and sealing strips are arranged at the inner edge of the annular sealing sheets 906. The annular sealing sheets 906 can initially prevent the overflow of lubricating oil, reduce the pollution of external dust, and the sealing of the lubricating oil reduces the rolling friction between the bearing inner ring 905 and the bearing outer ring 901, effectively reducing the frictional force, thereby effectively reducing the noise generated during the operation of the bearing. Embodiment 2

[0055] The solution in Embodiment 1 will be further introduced below in combination with the specific working mode, as detailed in the following description:

[0056] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 7 、 Figure 8 and Figure 11 shown, as a preferred implementation manner, on the basis of the above manner, further, a flow hole 10 is opened on one side of the outer arc surface of the annular mounting frame 4, the flow hole 10 corresponds to and is adapted to the lubricating oil hole 902, a water injection port 402 is opened at the top of the outer arc surface of the annular mounting frame 4, a water injection cavity 11 is provided between the I-shaped ring 501 and the top of the inner arc surface of the annular mounting frame 4, one end of the water injection port 402 penetrates into the water injection cavity 11, a drainage groove 12 is opened between the annular mounting frame 4 and the annular positioning frame 5, a dust-proof sealing ring 13 is movably clamped on the inner arc surface of the drainage groove 12, an arched pressing part 131 is provided on the top surface of the dust-proof sealing ring 13, the upper surface of the arched pressing part 131 is movably lapped on the inner arc surface of the locking ring 8, a first sealing lip 132 is provided on one side of the dust-proof sealing ring 13 close to the arched pressing part 131, an arc groove 133 is opened on the upper surface of the first sealing lip 132, an annular spring 134 is movably sleeved on the inner arc surface of the arc groove 133, and a second sealing lip 135 is provided on one side of the lower surface of the arched pressing part 131.

[0057] In this embodiment, the connection between the annular mounting frame 4 and the annular positioning frame 5 forms a second sealing effect. Since the connection between the annular mounting frame 4 and the annular positioning frame 5 is connected by the sealing ring 7, during the agricultural machinery tillage process, when the accumulated water in the field is lifted, it will flow out from the reserved drainage groove 12. The drainage groove 12 is located at the rear end of the annular mounting frame 4, and the front end is isolated by the sealing ring 7. Therefore, when there is water flow, it will vertically flow from the top to the bottom and will not enter the bearing interior. At the same time, the rapid flow of water will also absorb part of the heat generated inside the bearing.

[0058] Among them, in order to prevent sediment from entering the bearing during operation and affecting its performance, a dust-proof sealing ring 13 is sleeved under the locking ring 8. The top arched pressing part 131 of this sealing ring will fully fit against the inner wall of the annular positioning frame 5. Therefore, during the farming process, firstly, the L-shaped arched pressing part 131 will isolate large particles of dust and soil. Secondly, the first sealing lip 132 provided at one end of the dust-proof sealing ring 13 will fit against the shaft rod connected to the bearing, achieving double sealing, so that both the connection part and the installation position are in a sealed and protected state. Further, if fine particles enter, the second sealing lip 135 on the other side of the dust-proof sealing ring 13 will fit inside for third-stage sealing. At the same time, an annular spring 134 is provided in the arc-shaped groove 133. Therefore, under the influence of the elastic performance of the spring, the entire dust-proof sealing ring 13 will contract inward and squeeze the shaft rod connected to the bearing. Therefore, from a sealing perspective, the arched pressing part 131 of the dust-proof sealing ring 13 expands and presses against the surface of the annular positioning frame 5 in a directional manner, thereby increasing the sealing effect, and thus realizing the sealed protection of the agricultural machinery bearing, effectively avoiding the occurrence of grease leakage and the entry of dust and water droplets into the bearing, and further effectively extending the service life of the bearing.

[0059] As Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 11 shown, as a preferred embodiment, on the basis of the above method, further, the dust-proof sealing ring 13 is a hollow through structure. A sealing cover 14 is movably clamped on the inner arc surface of the water injection port 402. Elastic hook parts 141 are provided on both sides of the sealing cover 14. The number of cage 904 is two. Sealing gasket rings 907 are movably sleeved on the outer arc surface of the two cages 904. A water sealing ring 15 is movably sleeved on the bottom of the inner arc surface of the water injection cavity 11. An extended sealing lip 151 is provided at one edge of the water sealing ring 15. One end of the extended sealing lip 151 penetrates to the side opening of the drainage groove 12. A groove is formed on the outer arc surface of the water sealing ring 15. Ventilation holes 152 are formed inside the groove of the water sealing ring 15. The number of ventilation holes 152 is several and they are evenly distributed in a circular array on the outer arc surface of the water sealing ring 15. A rubber base 16 is movably sleeved in the groove on the outer arc surface of the water sealing ring 15. Outer side ends 161 are provided on the upper surface of the rubber base 16. The number of outer side ends 161 is two and they are respectively arranged on both sides of the rubber base 16. V-shaped water sealing lips 162 are provided at the top of the two outer side ends 161. The top of the V-shaped water sealing lips 162 is movably lapped on the bottom end of the water injection port 402. The V-shaped water sealing lips 162 are all pressed against the inner arc surface of the annular mounting frame 4.

[0060] In this embodiment, the water injection port 402 opened on the annular mounting bracket 4 is connected and sealed by the elastic hook portions 141 on both sides of the sealing cover 14. Therefore, the water injected into the interior will not flow out of the water injection cavity 11. The water injection cavity 11 is provided with a water sealing ring 15. One of the extended sealing lips 151 and the ventilation holes 152 of this structure is for maintaining the seal, and the other is for achieving the heat dissipation effect. Therefore, the extended sealing lip 151 is for blocking the connection position with the liquid discharge groove 12. The entire water sealing ring 15 is closely attached to the inner wall of the water injection cavity 11. Therefore, after the water is poured into it, the water flow will be within the two V-shaped water sealing lips 162. Since the water sealing ring 15 will approach the inner wall of the annular mounting bracket 4 during the process of expanding under the water pressure, and the V-shaped water sealing lips 162 are located above the water sealing ring 15, they will continuously approach the water injection port 402 until they fit at the end of the water injection port 402. Therefore, in the sealed condition, the water can only be inside it. When the annular mounting bracket 4 rotates, the water inside the water injection cavity 11 will rotate accordingly. The water and the air flow will intersect during rotation, thereby completing the heat conversion. Therefore, the flowing air will absorb the temperature brought by the water, and the air flow cooled by the temperature will be discharged from the flow hole 10 to the bearing structure 9, so that the heat inside the bearing can be absorbed in time, and the heat dissipation effect is good. The bearing will not fail due to the too high temperature inside it, and the service life of the bearing is improved. Embodiment 3

[0061] The solutions in Embodiments 1 and 2 will be further introduced below in combination with the specific working mode. See the following description for details:

[0062] Specifically, when a farm machinery silent bearing with a multiple sealing mechanism is in operation / use: The bearing seat 1 can be fixed at the bearing of the agricultural machinery through the positioning hole 2. At the same time, the support outer ring 3 is used to lock the lubricating oil in the internal bearing structure 9. The lubricating oil hole 902 on the bearing outer ring 901 facilitates the inflow of the lubricating oil onto the bearing inner ring 905. The connection between the bearing inner ring 905 and the bearing outer ring 901 is achieved by sleeving the cage 904 and the sealing gasket ring 907. The cage 904 has a boss structure and is made of elastic plastic. Therefore, during the operation of the farm machinery, the vibration generated will be first transmitted to the elastic cage 904, and part of the vibration generated will be absorbed by it. At the same time, the boss-like structure can fit more closely on the bearing inner ring 905. And the connection between the two cages 904 with a larger tail diameter can better ensure the stability of the roller body 903 during rotation. On both the front and rear sides of the inside of the bearing outer ring 901, annular sealing sheets 906 are symmetrically arranged, and sealing strips are provided on the inner side of the annular sealing sheets 906. The annular sealing sheets 906 can initially prevent the overflow of the lubricating oil, reduce the pollution of external dust, and seal the lubricating oil to reduce the rolling friction between the bearing inner ring 905 and the bearing outer ring 901, effectively reducing the frictional force, and thus effectively reducing the noise generated during the operation of the bearing. The connection between the annular mounting frame 4 and the annular positioning frame 5 forms a second sealing effect. Because the connection between the annular mounting frame 4 and the annular positioning frame 5 is connected by the sealing ring 7. Therefore, during the farming process of the agricultural machinery, when the accumulated water in the field is lifted, it will flow out from the reserved drain groove 12. The drain groove 12 is located at the rear end of the annular mounting frame 4, and the front end is isolated by the sealing ring 7. Therefore, when water flows through, it will vertically flow from the top to the bottom and will not enter the bearing interior. At the same time, the rapid flow of the water will also absorb part of the heat generated inside the bearing. In order to prevent the situation that sediment enters the bearing interior during the working process and affects the operation, a dust-proof sealing ring 13 will be sleeved under the locking ring 8. The arched abutting part 131 at the top of this sealing ring will completely fit on the inner wall of the annular positioning frame 5. Therefore, during the farming process, first, the L-shaped arched abutting part 131 will isolate large particles of dust and soil. Secondly, the first sealing lip 132 provided at one end of the dust-proof sealing ring 13 will fit on the shaft rod connected to the bearing. Further, if small particles enter, the second sealing lip 135 on the other side of the dust-proof sealing ring 13 will fit inside for sealing on the third structure. At the same time, an annular spring 134 is also provided in the arc-shaped groove 133. Therefore, under the influence of the elastic performance of the spring, the entire dust-proof sealing ring 13 will contract inward and squeeze the shaft rod connected to the bearing, improving the sealing between the dust-proof sealing ring 13 and the annular positioning frame 5. The arched abutting part 131 of the dust-proof sealing ring 13 expands and directionally squeezes the surface of the annular positioning frame 5, further increasing the sealing effect, so that it is convenient to seal and protect the farm machinery bearing.Effectively avoid the occurrence of grease leakage and the entry of dust and water droplets into the bearing interior, thereby effectively extending the service life of the bearing. The water injection port 402 opened on the annular mounting bracket 4 is connected and sealed by the elastic hook-tightening portions 141 on both sides of the sealing cover 14. Therefore, the water injected into the interior will not flow out from the water injection cavity 11. There is a water sealing ring 15 in the water injection cavity 11. The extended sealing lip 151 and the ventilation hole 152 of this structure are for maintaining sealing and achieving a heat dissipation effect respectively. Therefore, the extended sealing lip 151 is for blocking the connection position with the liquid discharge groove 12. The entire water sealing ring 15 is closely attached to the inner wall of the water injection cavity 11. Therefore, after pouring water into it, the water flow will be within the two V-shaped water sealing lips 162. Because during the process of the water sealing ring 15 expanding under water pressure, it will approach the inner wall of the annular mounting bracket 4, and the V-shaped water sealing lips 162 are located above the water sealing ring 15. Therefore, it will continuously approach the water injection port 402 until it fits at the end of the water injection port 402. Therefore, under the sealed condition, the water can only be inside it. Also, because the water injection cavity 11 is formed between the annular mounting bracket 4 and the annular positioning bracket 5, when the annular mounting bracket 4 rotates, the water inside will rotate accordingly. The generated water temperature difference will cause the air in the middle to circulate. The circulating air will absorb the temperature brought by the water, and the cooled air flow will be discharged from the flow hole 10 to the bearing structure 9, so as to absorb the heat inside the bearing in time and have a good heat dissipation effect. The bearing will not fail due to too high internal temperature, thus improving the service life of the bearing.

[0063] The above embodiments are only used to illustrate the present invention and do not limit the technical solutions described in the present invention. Although this specification has described the present invention in detail with reference to the above-mentioned respective embodiments, the present invention is not limited to the above specific implementation manners. Therefore, any modification or equivalent replacement to the present invention; and all technical solutions and their improvements that do not depart from the spirit and scope of the invention are covered by the scope of the claims of the present invention.

Claims

1. A silent bearing for agricultural machinery with a multiple sealing mechanism, characterized in that, It includes a bearing housing (1). Positioning holes (2) are provided at the four corners of one side surface of the bearing housing (1). A support outer ring (3) is provided in the middle of one side surface of the bearing housing (1). An annular mounting frame (4) is movably clamped on the inner arc surface of the support outer ring (3). A lining ring (401) is provided in the middle of the inner arc surface of the annular mounting frame (4). An annular positioning frame (5) is movably sleeved on the outer arc surface of the lining ring (401). An I-shaped ring (501) is provided on one side of the annular positioning frame (5) close to the annular mounting frame (4). A sealing cavity (6) is provided between the I-shaped ring (501) and the lining ring (401). A sealing ring (7) is movably connected to the inner arc surface of the sealing cavity (6). A locking ring (8) is movably clamped at the bottom end of the outer arc surface of the annular mounting frame (4). One end of the annular mounting frame (4) penetrates to the outside of the bearing housing (1) and is lapped on the back of the bearing housing (1) through the locking ring (8). A bearing structure (9) is sleeved on the inner arc surface of the annular mounting frame (4); The bearing structure (9) includes a bearing outer ring (901) movably sleeved inside the annular mounting frame (4). A lubricating oil hole (902) is provided in the middle of the outer arc surface of the bearing outer ring (901). A roller body (903) is movably lapped on the inner arc surface of the bearing outer ring (901). A cage (904) is connected to the outer arc surface of the roller body (903). A bearing inner ring (905) is connected to the inner arc surface of the cage (904). The outer arc surface of the bearing inner ring (905) is an arc structure and is in rolling fit with the roller body (903). A sealing gasket ring (907) is sleeved on the edge of the outer arc surface of the cage (904). Annular sealing sheets (906) are movably clamped on both sides of the inner arc surface of the bearing outer ring (901).

2. The silent bearing for agricultural machinery with a multiple sealing mechanism according to claim 1, characterized in that, A flow hole (10) is opened on one side of the outer arc surface of the annular mounting frame (4). The flow hole (10) is correspondingly adapted to the lubricating oil hole (902). A water injection port (402) is opened at the top of the outer arc surface of the annular mounting frame (4). A water injection cavity (11) is provided between the I-shaped ring (501) and the top of the inner arc surface of the annular mounting frame (4). One end of the water injection port (402) penetrates into the water injection cavity (11).

3. The silent bearing for agricultural machinery with a multiple sealing mechanism according to claim 2, characterized in that, A drain groove (12) is opened between the annular mounting frame (4) and the annular positioning frame (5). A dust-proof sealing ring (13) is movably clamped on the inner arc surface of the drain groove (12). An arched pressing part (131) is provided on the top surface of the dust-proof sealing ring (13). The top surface of the arched pressing part (131) is movably lapped on the inner arc surface of the locking ring (8).

4. The silent bearing for agricultural machinery with a multiple sealing mechanism according to claim 3, characterized in that, A first sealing lip (132) is provided on one side of the dust-proof sealing ring (13) close to the arched pressing part (131). An arc groove (133) is opened on the top surface of the first sealing lip (132). An annular spring (134) is movably sleeved on the inner arc surface of the arc groove (133). A second sealing lip (135) is provided on one side of the bottom surface of the arched pressing part (131).

5. The silent bearing for agricultural machinery with a multiple sealing mechanism according to claim 4, characterized in that, The dust-proof sealing ring (13) is a hollow through structure. The inner arc surface of the water injection port (402) is movably clamped with a sealing cover (14). Elastic hook-tightening parts (141) are arranged on both sides of the sealing cover (14). The number of the cage (904) is two. The outer arc surface sides of the two cages (904) are movably sleeved with sealing gasket rings (907).

6. The silent bearing for agricultural machinery with a multiple sealing mechanism according to claim 5, characterized in that, The inner arc surface bottom of the water injection cavity (11) is movably sleeved with a water sealing ring (15). An extended sealing lip (151) is arranged at one side edge of the water sealing ring (15). One end of the extended sealing lip (151) penetrates to the side opening of the liquid discharge groove (12).

7. The silent bearing for agricultural machinery with a multiple sealing mechanism according to claim 6, characterized in that, A groove is formed in the outer arc surface of the water sealing ring (15). Ventilation holes (152) are formed in the groove of the water sealing ring (15). The number of the ventilation holes (152) is several, and they are evenly distributed in a circular array on the outer arc surface of the water sealing ring (15).

8. The silent bearing for agricultural machinery with a multiple sealing mechanism according to claim 7, characterized in that, A rubber base (16) is movably sleeved in the groove on the outer arc surface of the water sealing ring (15). An outer side end (161) is arranged on the upper surface of the rubber base (16). The number of the outer side ends (161) is two, and they are respectively arranged on both sides of the rubber base (16).

9. The agricultural machinery silent bearing with a multiple sealing mechanism according to claim 8, characterized in that, V-shaped water sealing lips (162) are arranged at the tops of the two outer side ends (161). The tops of the V-shaped water sealing lips (162) are movably lapped on the bottom end of the water injection port (402). The V-shaped water sealing lips (162) are tightly abutted against the inner arc surface of the annular mounting frame (4).

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