Multi-layer sealing oil injection type agricultural machinery bearing

Abstract

The utility model discloses a multi-layer sealing oil injection type agricultural machinery bearing which comprises an outer ring, an inner ring, a steel ball and a three-layer sealing structure, the three-layer sealing structure is adopted, it is ensured that the bearing keeps excellent sealing performance in the operation process, and the three-layer sealing design between the inner ring and the outer ring effectively prevents external pollutants from entering the bearing. And abrasion and damage caused by foreign matters are reduced. According to the sealing structure, the durability of the bearing is enhanced, long-term protection can be provided in a severe working environment, the service life of the bearing is prolonged, and meanwhile, a convenient oil injection function is particularly considered in the design of the bearing. The inner ring is provided with a core shaft, one end of the core shaft extends to the outer side of the outer ring and is connected with an oil injection nozzle, and injection of lubricating grease in the operation process is facilitated. Through the design, maintenance personnel can easily provide continuous lubrication for the bearing, the design of the oil injection port enables the lubrication operation to be simpler and more convenient, the time is saved, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical bearing technical field, concretely relates to a multilayer sealed oil injection type agricultural machinery bearing. BACKGROUND

[0002] The agricultural machinery bearing is long in complex working condition and runs, and the lubricating grease is polluted, the steel ball is abraded and the service life is shortened due to the sealing failure. In the prior art, the traditional bearing adopts single-layer lip seal or simple contact seal, and there is the problem of single sealing structure, and it is inconvenient to maintain, and secondly, the lubrication and sealing are insufficient in cooperation because of the high lubrication demand.

[0003] Through the search, such as Chinese patent document discloses a waterproof dustproof multiple combination sealing agricultural machinery bearing

application number: 202322232002.0, publication number: CN220581526U

[0004] In view of the problems in the prior art, the utility model aims at providing a multilayer sealed oil injection type agricultural machinery bearing.

[0005] A multilayer sealed oil injection type agricultural machinery bearing, characterized by comprising:

[0006] The outer ring is provided with an annular bottom at one end, and an O-ring is embedded in the circumferential direction of the annular bottom;

[0007] The inner ring is provided with a mandrel in the middle, one end of the mandrel extends to the outer side of the outer ring and is connected with the oil injection nozzle, and the other end is fixed with the inner ring through the clamping structure;

[0008] The steel ball is arranged between the outer ring and the inner ring and is limited by the retainer ring;

[0009] The three-layer sealing structure comprises an inner dust cover, an intermediate sealing element and an outer sealing ring in sequence, the inner dust cover is interference-fitted with the inner ring, the outer sealing ring is interference-fitted with the outer ring, and the intermediate sealing element is installed between the inner ring and the outer ring;

[0010] Preferably, the middle part of the inner ring is provided with a mandrel, one end of which extends to the outside of the outer ring and is connected to the oil injection nozzle, and the other end is fixed to the inner ring through a clamping structure, which is matched with the inner wall of the inner ring through a positioning component to ensure the connection between the mandrel and the inner ring.

[0011] Through the above technical solution, the inner ring and the mandrel are stably connected through the precise matching of the clamping structure and the positioning component, avoiding the loosening or displacement of the mandrel during the operation of the bearing. The clamping structure is tightly matched with the inner wall of the inner ring through the positioning component, ensuring the firm connection between the inner ring and the mandrel. The advantage of this design is that it avoids the problem of unstable connection that may occur in traditional designs, thereby improving the stability and reliability of the bearing. In addition, one end of the mandrel extends to the outside of the outer ring and is connected to the oil injection nozzle, which can conveniently inject lubricating grease into the bearing. By providing necessary lubrication, the friction and wear between the inner ring and the outer ring are reduced, effectively prolonging the service life of the bearing.

[0012] Preferably, the inner ring and the outer ring are connected through a structure with a matching groove, so that the inner ring and the outer ring maintain a stable relative position in the bearing.

[0013] Through the above technical solution, the inner ring and the outer ring are connected through a structure with a matching groove, so that the inner ring and the outer ring maintain a stable relative position in the bearing. The matching groove design ensures that the inner ring and the outer ring do not displace or loosen during the operation of the bearing, thereby avoiding the problem of unstable operation that may occur in traditional designs due to inaccurate matching. The precise machining of the matching groove ensures good matching of the inner and outer rings, further improving the accuracy and reliability of the bearing. In addition, the structural design of the matching groove also makes the assembly of the bearing more convenient, effectively reducing errors during manufacturing and installation and reducing the complexity of the assembly process.

[0014] Preferably, the inner wall of the outer ring is provided with an annular guide groove, and the outer wall of the inner ring is provided with a flange matched with the guide groove.

[0015] Through the above technical solution, the inner wall of the outer ring is provided with an annular guide groove, and the outer wall of the inner ring is provided with a flange matched with the guide groove. This design maintains the precise relative position between the inner ring and the outer ring through the cooperation of the annular guide groove and the flange, effectively preventing the displacement or relative displacement of the two during the operation of the bearing. The cooperation of the flange and the guide groove provides additional mechanical stability, ensuring that the inner and outer rings maintain good cooperation under high load operation, thereby improving the stability and operation accuracy of the bearing. In addition, the introduction of this design makes the assembly of the bearing more convenient. Through the cooperation of the guide groove and the flange, errors caused by improper installation can be reduced, improving the assembly efficiency and accuracy.

[0016] Preferably, the retaining ring is a split structure, including an upper retaining ring and a lower retaining ring, forming an annular cavity between them for accommodating the steel balls.

[0017] Through the above technical solution, the retaining ring adopts a split structure, including an upper retaining ring and a lower retaining ring, forming an annular cavity between them for accommodating the steel balls. This design makes the retaining ring more flexible to adapt to different working environments of the bearing, with high manufacturing precision and assembly convenience. The split structure can effectively reduce the weight of the retaining ring, reduce the overall friction of the bearing, and improve the running efficiency of the bearing. In addition, the cooperation mode of the upper retaining ring and the lower retaining ring ensures the stable distribution of the steel balls in the cavity, reduces the mutual collision between the steel balls, and reduces the wear and noise.

[0018] Preferably, the outer peripheral wall of the outer ring is provided with an outer ring end portion, and a plurality of mounting holes are formed in the outer ring end portion for fixing the outer ring to the mounting base.

[0019] Through the above technical solution, the outer peripheral wall of the outer ring is provided with an outer ring end portion, and a plurality of mounting holes are formed in the outer ring end portion for fixing the outer ring to the mounting base. This design enables the outer ring to be reliably connected to the base through the mounting holes, ensuring the close cooperation between the outer ring and the base, avoiding displacement or loosening problems that may occur during installation. Through this structural design, the installation of the bearing is more convenient, and the installation precision is improved. In addition, the multiple mounting holes can evenly distribute the stress points of the outer ring, so that the outer ring can evenly bear the load during work, reducing the wear caused by local pressure concentration and prolonging the service life of the bearing. The design of the outer ring end portion makes the fixation more stable, effectively preventing the displacement of the outer ring caused by vibration or impact during the operation of the bearing, thereby enhancing the stability and reliability of the bearing under high load conditions.

[0020] Preferably, the inner peripheral wall of the inner ring is provided with an inner ring end portion, and a plurality of mounting holes are formed in the inner ring end portion for fixing the inner ring to the corresponding connecting structure.

[0021] Through the above technical solution, the inner peripheral wall of the inner ring is provided with an inner ring end portion, and a plurality of mounting holes are formed in the inner ring end portion for fixing the inner ring to the corresponding connecting structure. This design simplifies the installation process of the bearing by providing mounting holes on the inner ring end portion, ensuring that the inner ring can stably cooperate with the connecting structure and effectively avoiding the displacement or loosening problems caused by improper installation. Multiple mounting holes are evenly distributed on the inner ring end portion, which can evenly distribute the stress during installation and prevent local excessive stress from causing deformation or damage, thereby enhancing the stability and service life of the bearing. In addition, this design also improves the cooperation precision between the inner ring and the connecting structure, ensuring that the inner ring maintains the correct relative position during the operation of the bearing, thereby improving the running efficiency and precision of the bearing.

[0022] Compared with the prior art, the utility model has the advantages of:

[0023] 1. The utility model discloses a three-layer sealing structure, including inner dust cover, intermediate sealing piece and outer sealing ring, ensure that the bearing keeps excellent sealing performance in the operation process. The three-layer sealing design between the inner and outer rings effectively prevents external pollutants from entering the bearing interior, reducing the wear and damage caused by foreign matter. This sealing structure not only enhances the durability of the bearing, but also can provide long-term protection in harsh working environment, prolonging the service life of the bearing.

[0024] 2. The bearing design of the utility model particularly considers the convenient oil injection function. The inner ring is provided with a mandrel, one end of the mandrel extends to the outer side of the outer ring and is connected with an oil injection nozzle, facilitating the injection of lubricating grease in the operation process. Through this design, maintenance personnel can easily provide continuous lubrication for the bearing, reducing friction and wear caused by insufficient lubrication. The design of the oil injection port makes the lubrication operation more convenient, saves time and improves work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0025] Fig. 1 is the schematic view of the cross section of the utility model;

[0026] Fig. 2 is the partial enlarged schematic view of A of the utility model.

[0027] In the drawing: 1, outer ring;2, inner ring;3, mandrel;4, steel ball, 5, retainer ring;6, inner dust cover;7, intermediate sealing piece;8, outer sealing ring;9, O ring;10, oil injection nozzle DETAILED DESCRIPTION

[0028] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0029] Please refer to Figs. 1-2 , the utility model provides a technical scheme:

[0030] A multi-layer sealed oil injection type agricultural machinery bearing, characterized in that, comprising:

[0031] The outer ring 1 is provided with an annular bottom at one end, and the annular bottom is embedded with an O ring 9 in the circumferential direction;

[0032] The inner ring 2 is provided with a mandrel 3 in the middle part, one end of the mandrel 3 extends to the outside of the outer ring 1 and is connected with an oil injection nozzle 10, and the other end is fixed with the inner ring 2 through a clamping structure;

[0033] The steel ball 4 is arranged between the outer ring 1 and the inner ring 2 and is limited by the retaining ring 5;

[0034] The three-layer sealing structure sequentially comprises an inner dust cover 6, an intermediate sealing element 7 and an outer sealing ring 8, the inner dust cover 6 is in interference fit with the inner ring 2, the outer sealing ring 8 is in interference fit with the outer ring 1, and the intermediate sealing element 7 is installed between the inner ring 2 and the outer ring 1;

[0035] Specifically, the inner ring 2 is provided with a mandrel 3 in the middle part, one end of the mandrel 3 extends to the outside of the outer ring 1 and is connected with an oil injection nozzle 10, and the other end is fixed with the inner ring 2 through a clamping structure, and the clamping structure is matched with the inner wall of the inner ring 2 through a positioning component to ensure the connection between the mandrel 3 and the inner ring 2. The inner ring 2 and the mandrel 3 are stably connected through the precise cooperation of the clamping structure and the positioning component, avoiding the loosening or displacement of the mandrel 3 during the working process of the bearing. The clamping structure is tightly matched with the inner wall of the inner ring 2 through the positioning component, ensuring the firm connection between the inner ring 2 and the mandrel 3. The advantage of this design is that it avoids the problem of loose connection that may occur in traditional designs, thereby improving the stability and reliability of the bearing. In addition, one end of the mandrel 3 extends to the outside of the outer ring 1 and is connected with the oil injection nozzle 10, which can conveniently inject lubricating grease into the bearing. By providing necessary lubrication, the friction and wear between the inner ring 2 and the outer ring 1 are reduced, effectively prolonging the service life of the bearing.

[0036] This design not only improves the working efficiency of the bearing, but also reduces the frequency of maintenance and repair, and adapts to the demand of long-term high-load operation. In summary, through reasonable structure design, the bearing has high stability, long service life and convenient maintenance mode.

[0037] Specifically, the inner ring 2 and the outer ring 1 are connected through a structure with a matching groove, so that the inner ring 2 and the outer ring 1 maintain a stable relative position in the bearing. The inner ring 2 and the outer ring 1 are connected through a structure with a matching groove, so that they can maintain a stable relative position. The matching groove design ensures that the inner ring 2 and the outer ring 1 do not displace or loosen during the operation of the bearing, thereby avoiding the problem of unstable operation that may occur in traditional designs due to inaccurate cooperation. The precise machining of the matching groove ensures the good cooperation of the inner and outer rings, further improving the accuracy and reliability of the bearing. In addition, the structure design of the matching groove also makes the assembly of the bearing more simple, which can effectively reduce the error in the manufacturing and installation process and reduce the complexity of the assembly process.

[0038] This innovative design not only enhances the stability of the bearing under high load working conditions, but also improves the durability and operating efficiency of the bearing, meeting the requirements of long-term and high-intensity use. Through this optimization, the bearing of the utility model has higher precision, longer service life and higher overall performance.

[0039] Specifically, the inner wall of the outer ring 1 is provided with an annular guide groove, and the outer wall of the inner ring 2 is provided with a flange matched with the guide groove. The inner wall of the outer ring 1 is provided with an annular guide groove, and the outer wall of the inner ring 2 is provided with a flange matched with the guide groove. This design keeps the relative position between the inner ring 2 and the outer ring 1 accurate through the cooperation of the annular guide groove and the flange, effectively preventing the shift or relative displacement of the two during the operation of the bearing. The cooperation of the flange and the guide groove provides additional mechanical stability, ensuring that the inner and outer rings can maintain good cooperation under high load operation, thereby improving the stability and operating precision of the bearing. In addition, the introduction of this design makes the assembly of the bearing more convenient. Through the cooperation of the guide groove and the flange, errors caused by improper installation can be reduced, improving the assembly efficiency and precision.

[0040] Due to the stable cooperation of the inner and outer rings, the friction and wear of the bearing are reduced, further improving the durability and service life of the bearing. Through this optimization, the bearing of the utility model can maintain higher performance and longer service life under more demanding working conditions, meeting the long-term and high-intensity working requirements.

[0041] Specifically, the retaining ring 5 is a split structure, including an upper retaining ring and a lower retaining ring, forming an annular cavity for accommodating the steel balls 4. The retaining ring 5 is a split structure, including an upper retaining ring and a lower retaining ring, forming an annular cavity for accommodating the steel balls 4. This design makes the retaining ring 5 more flexible to adapt to different working environments of the bearing, with high manufacturing precision and assembly convenience. The split structure can effectively reduce the weight of the retaining ring 5, reduce the overall friction of the bearing, and improve the operating efficiency of the bearing. In addition, the cooperation mode of the upper retaining ring and the lower retaining ring ensures the stable distribution of the steel balls 4 in the cavity, reduces the mutual collision between the steel balls 4, and reduces the wear and noise.

[0042] By forming an annular cavity, the retaining ring 5 can better guide the steel balls 4 to maintain the correct position and stable rotation trajectory during operation, thereby improving the stability and durability of the bearing. This split retaining ring 5 design not only improves the performance of the bearing, but also makes assembly and maintenance more convenient, facilitates disassembly and replacement, prolongs the service life of the bearing, and meets various high-load and long-term working requirements.

[0043] Specifically, the outer peripheral wall of the outer ring 1 is provided with an outer ring end portion, and a plurality of mounting holes are formed in the outer ring end portion for fixing the outer ring 1 to the mounting base. The outer peripheral wall of the outer ring 1 is provided with an outer ring end portion, and a plurality of mounting holes are formed in the outer ring end portion for fixing the outer ring 1 to the mounting base. This design enables the outer ring 1 to be reliably connected to the base through the mounting holes, ensuring a tight fit between the outer ring 1 and the base, and avoiding displacement or loosening problems that may occur during installation. With this structural design, the bearing is easier to install, and the installation precision is improved. In addition, the multiple mounting holes can evenly distribute the stress points of the outer ring 1, so that the outer ring 1 can evenly bear the load during operation, reducing the wear caused by local pressure concentration and prolonging the service life of the bearing. The design of the outer ring end portion makes the fixing more stable, effectively preventing the displacement of the outer ring 1 caused by vibration or impact during bearing operation, thereby enhancing the stability and reliability of the bearing under high load conditions.

[0044] Through this optimization scheme, the bearing of the utility model can provide more stable and efficient working performance, adapt to more complex working environment and higher operation demand.

[0045] Specifically, the inner peripheral wall of the inner ring 2 is provided with an inner ring end portion, and a plurality of mounting holes are formed in the inner ring end portion for fixing the inner ring 2 to the corresponding connecting structure. The inner peripheral wall of the inner ring 2 is provided with an inner ring end portion, and a plurality of mounting holes are formed in the inner ring end portion for fixing the inner ring 2 to the corresponding connecting structure. This design simplifies the installation process of the bearing by providing mounting holes on the inner ring end portion, ensures that the inner ring 2 can stably cooperate with the connecting structure, and effectively avoids the problems of deviation or loosening caused by improper installation. The multiple mounting holes are evenly distributed on the inner ring end portion, which can evenly distribute the stress during installation and prevent local excessive stress from causing deformation or damage, thereby enhancing the stability and service life of the bearing. In addition, this design also improves the fitting precision between the inner ring 2 and the connecting structure, ensures that the inner ring 2 maintains the correct relative position during bearing operation, and thus improves the running efficiency and precision of the bearing.

[0046] Through this optimization scheme, the bearing of the utility model can maintain excellent performance and longer service life under long-term and high-strength working conditions, meeting the stringent requirements in various industrial applications.

[0047] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0048] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0049] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, and any person skilled in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A multi-layer sealed oil-impregnated agricultural machinery bearing, characterized by, The utility model relates to a bearing, which comprises: an outer ring (1) having a ring-shaped bottom at one end, wherein an O-shaped ring (9) is embedded in the circumferential direction of the ring-shaped bottom; an inner ring (2) having a mandrel (3) in the middle, wherein one end of the mandrel (3) extends to the outside of the outer ring (1) and is connected to an oil injection nozzle (10), and the other end is fixed to the inner ring (2) through a clamping structure; a steel ball (4) arranged between the outer ring (1) and the inner ring (2) and limited by a retaining ring (5); a three-layer sealing structure comprising, in sequence, an inner dust cover (6), an intermediate sealing element (7), and an outer sealing ring (8), wherein the inner dust cover (6) is in interference fit with the inner ring (2), the outer sealing ring (8) is in interference fit with the outer ring (1), and the intermediate sealing element (7) is installed between the inner ring (2) and the outer ring (1).

2. The agricultural bearing of claim 1, wherein, The inner ring (2) has a mandrel (3) in the middle, wherein one end of the mandrel (3) extends to the outside of the outer ring (1) and is connected to an oil injection nozzle (10), and the other end is fixed to the inner ring (2) through a clamping structure, and the clamping structure is matched with the inner wall of the inner ring (2) through a positioning component to ensure the connection between the mandrel (3) and the inner ring (2).

3. The agricultural bearing of claim 1, wherein, The inner ring (2) and the outer ring (1) are connected through a structure having a matching groove, so that the inner ring (2) and the outer ring (1) maintain a stable relative position in the bearing.

4. The agricultural bearing of claim 1, wherein, The inner wall of the outer ring (1) is provided with an annular guide groove, and the outer wall of the inner ring (2) is provided with a flange matched with the guide groove.

5. The agricultural bearing of claim 1, wherein, The retaining ring (5) is a split structure, comprising an upper retaining ring and a lower retaining ring, and an annular cavity for accommodating the steel ball (4) is formed between the upper retaining ring and the lower retaining ring.

6. The agricultural bearing of claim 1, wherein, The outer peripheral wall of the outer ring (1) is provided with an outer ring end portion, and a plurality of mounting holes are formed in the outer ring end portion for fixing the outer ring (1) to a mounting base.

7. The agricultural bearing of claim 1, wherein, The inner peripheral wall of the inner ring (2) is provided with an inner ring end portion, and a plurality of mounting holes are formed in the inner ring end portion for fixing the inner ring (2) to a corresponding connecting structure.

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