Durable ball bearing

Abstract

The utility model discloses a durable ball bearing, which relates to the field of bearings, and adopts the technical scheme that the durable ball bearing comprises an outer ring, an inner ring and two frames, a plurality of through holes are formed in the frames, the frames are detachably connected with a plurality of symmetrically arranged positioning arms, and positioning sheets are arranged at one ends, far away from the frames, of the positioning arms; the outer ring is provided with a positioning groove allowing the positioning piece to be embedded therein, and when the positioning piece is embedded into the positioning groove, the through holes in the two frames correspond to each other. By arranging the positioning piece and the positioning groove, an operator firstly places the positioning piece into the positioning groove in the process of assembling a bearing, so that holes in the two frames are aligned, subsequent fixing operation is facilitated, the pre-positioning effect is achieved, operation is simple and convenient, and the working efficiency is improved. And the steel material of the bearing has high strength, high hardness, high wear resistance and high fatigue strength, so that the strength, hardness, wear resistance and fatigue strength of the inner ring and the outer ring are improved, and the service life of the whole bearing is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of bearings, and more specifically, it relates to a durable ball bearing. Background Art

[0002] A ball bearing is a mechanical part that uses the rolling of balls to reduce friction and support a rotating shaft. A ball bearing usually consists of an inner ring, an outer ring, balls, and a cage. Ball bearings have the characteristics of small friction coefficient, small starting and running torque, small power loss, and high efficiency. Therefore, they are widely used in mechanical equipment, automobiles, motorcycles, aircraft, spacecraft, and other fields.

[0003] The cage usually consists of two symmetrically arranged frames, and these two frames need to be placed between the outer ring and the inner ring from both sides of the bearing respectively. A number of holes are usually provided on the frames for fixing them with mounting pins when the two frames are in contact with each other. Since the assembly of the bearing requires a high degree of precision, if the positioning during the assembly process is inaccurate, the holes of the two frames may not fully correspond.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Summary of the Utility Model

[0005] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a durable ball bearing.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions: A durable ball bearing includes an outer ring, an inner ring, and two frames. A number of through holes are provided on the frames. A number of symmetrically arranged positioning arms are detachably connected to the frames. A positioning piece is provided at one end of the positioning arm away from the frame. A positioning groove for accommodating the positioning piece to be embedded is provided on the outer ring. When the positioning piece is embedded in the positioning groove, the through holes on the two frames correspond to each other.

[0007] The utility model is further provided as: The positioning arm has elastic recovery characteristics, and the length of the outer edge of the positioning groove is greater than the length of the outer edge of the positioning piece.

[0008] The utility model is further provided as: Slots for accommodating the positioning arms to be inserted are provided on the frames. A number of convex blocks are fixedly connected to both sides of the positioning arm. Grooves for accommodating the convex blocks to be embedded are provided on the inner walls of the slots.

[0009] The utility model is further provided as: The cross-section of the convex block is arranged in a minor arc shape.

[0010] The utility model is further provided as: An oil inlet hole is provided on the outer ring. A sealing cover is provided at the top of the oil inlet hole, and the sealing cover is snap-connected to the outer ring.

[0011] The present utility model is further configured such that: the length of the outer edge of the sealing cover is equal to the length of the outer edge of the positioning groove and the positioning groove can accommodate the sealing cover to be inserted therein.

[0012] The present utility model is further configured such that: both the inner ring and the outer ring are made of bearing steel.

[0013] In summary, the present utility model has the following beneficial effects: by providing the positioning piece and the positioning groove, during the process of assembling the bearing by the operator, the positioning piece is first placed into the positioning groove to align the holes on the two frames, facilitating subsequent fixing operations, achieving a pre-positioning effect. At the same time, the positioning arm and the positioning piece also facilitate subsequent maintenance and replacement. People can easily separate the frames by pulling out the positioning arm, improving the operation convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural view of the present utility model;

[0015] Figure 2 is a partial cross-sectional view of the present utility model except for the sealing cover;

[0016] Figure 3 is Figure 2 an enlarged schematic view of part A in

[0017] In the figure: 1, outer ring; 2, inner ring; 3, frame; 4, through hole; 5, positioning arm; 6, positioning piece; 7, positioning groove; 8, slot; 9, convex block; 10, groove; 11, oil inlet hole; 12, sealing cover. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The present utility model will be described in detail below with reference to the drawings and embodiments.

[0019] Embodiment:

[0020] A durable ball bearing, as Figure 1 and Figure 2 shown, includes an outer ring 1, an inner ring 2 and two frames 3. A plurality of through holes 4 are provided on the frames 3. Specifically, both the inner ring 2 and the outer ring 1 are made of bearing steel, and the frames 3 are made of stainless steel. The advantages of bearing steel are high strength, high hardness, high wear resistance and high fatigue strength. At the same time, it has good machining performance and heat treatment performance, which can improve the strength, hardness, wear resistance and fatigue strength of the inner ring 2 and the outer ring 1, making the inner ring 2 and the outer ring 1 more durable and improving the overall service life of the bearing. And the stainless steel material has excellent corrosion resistance and high temperature resistance, further extending the service time of the bearing.

[0021] Specifically, as Figure 2 and Figure 3As shown, two symmetrically arranged positioning arms 5 are detachably connected to the frame 3. A positioning piece 6 is integrally formed at one end of the positioning arm 5 away from the frame 3. A positioning groove 7 for accommodating the embedding of the positioning piece 6 is provided on the outer ring 1. When the positioning piece 6 is embedded in the positioning groove 7, the through holes 4 on the two frames 3 correspond to each other. Since the positioning arm 5 is detachably connected to the frame 3, after the two frames 3 are fixed to each other, the operator can choose to detach the positioning arm 5 from the frame 3. This operation is simple and convenient. By setting the positioning groove 7, when the positioning piece 6 is embedded in the positioning groove 7, the through holes 4 on the two frames 3 can correspond to each other, thus ensuring the relative position accuracy between the two frames 3 and providing convenience for subsequent installation. Further, the positioning arm 5 has elastic recovery characteristics, and the length of the outer edge of the positioning groove 7 is greater than the length of the outer edge of the positioning piece 6. Since the length of the outer edge of the positioning groove 7 is greater than the length of the outer edge of the positioning piece 6, when the positioning piece 6 is embedded in the positioning groove 7, the positioning arm 5 will generate a certain elastic force due to its elastic recovery characteristics, so that the positioning piece 6 can fit more closely in the positioning groove 7. This close fit can reduce the connection gap and improve the stability and reliability of the connection structure. In addition, this design also simplifies the disassembly process, enabling the operator to easily remove the positioning piece 6 from the positioning groove 7.

[0022] As Figure 2 and Figure 3 shown, a slot 8 for accommodating the insertion of the positioning arm 5 is provided on the frame 3. Protrusions 9 are fixedly connected to both sides of the positioning arm 5, and grooves 10 for accommodating the embedding of the protrusions 9 are provided on the inner wall of the slot 8. Specifically, the cross-section of the protrusion 9 is arranged in a minor arc shape. By setting the slot 8, the slot 8 can provide accurate positioning and fixation. Since the protrusion 9 with a minor arc shape can be tightly embedded in the groove 10, this can prevent the positioning arm 5 from shifting or shaking in the slot 8, ensuring the stability and reliability of the connection structure. Moreover, the protrusion 9 with a minor arc cross-section increases the contact area between the protrusion 9 and the groove 10, increasing the friction between the two, making the use process more stable and reliable. At the same time, through the above settings, when disassembly or maintenance is required, due to the tight fit between the protrusion 9 and the groove 10, only a certain force needs to be applied to pull out the positioning arm 5 from the slot 8, making the disassembly and maintenance process more convenient and fast.

[0023] As Figure 1 and Figure 2As shown, an oil inlet hole 11 is provided on the outer ring 1. A sealing cover 12 is arranged at the top of the oil inlet hole 11. The sealing cover 12 is snap-fitted on the outer ring 1. The oil inlet hole 11 allows lubricant to be directly injected into the bearing to ensure the smooth operation of the bearing. The design of the sealing cover 12 can effectively prevent external contaminants from entering the bearing interior through the oil inlet hole 11, thereby protecting the bearing from damage. At the same time, due to the presence of the sealing cover 12, it can ensure that the lubricant will not be wasted due to leakage during the filling process. Further, the length of the outer edge of the sealing cover 12 is equal to the length of the outer edge of the positioning groove 7 and the positioning groove 7 can accommodate the sealing cover 12 to be embedded. Through the above settings, when the operator fixes the frame 3 and injects lubricant into the oil inlet hole 11, the sealing cover 12 can be inverted in the positioning groove 7. After the oil injection is completed, the sealing cover 12 is snap-fitted on the outer ring 1. This operation facilitates the operator to inject oil and seal, and the sealing cover 12 is not easy to lose.

[0024] The above are only the preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the concept of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A durable ball bearing, comprising an outer ring (1), an inner ring (2) and two frames (3), characterized in that: A number of through holes (4) are provided on the frame (3). A number of symmetrically arranged positioning arms (5) are detachably connected to the frame (3). A positioning piece (6) is provided at one end of the positioning arm (5) away from the frame (3). A positioning groove (7) for accommodating the positioning piece (6) to be embedded is provided on the outer ring (1). When the positioning piece (6) is embedded in the positioning groove (7), the through holes (4) on the two frames (3) correspond to each other.

2. The durable ball bearing according to claim 1, wherein: The positioning arm (5) has elastic recovery characteristics, and the length of the outer edge of the positioning groove (7) is greater than the length of the outer edge of the positioning piece (6).

3. The durable ball bearing according to claim 2, wherein: A slot (8) for accommodating the positioning arm (5) to be inserted is provided on the frame (3). A number of bumps (9) are fixedly connected to both sides of the positioning arm (5). A groove (10) for accommodating the bumps (9) to be embedded is provided on the inner wall of the slot (8).

4. The durable ball bearing according to claim 3, wherein: The cross-section of the bump (9) is arranged in a shape of an inferior arc.

5. The durable ball bearing according to claim 1, wherein: An oil inlet hole (11) is provided on the outer ring (1). A sealing cover (12) is provided at the top of the oil inlet hole (11), and the sealing cover (12) is snap-connected to the outer ring (1).

6. The durable ball bearing according to claim 5, wherein: The length of the outer edge of the sealing cover (12) is equal to the length of the outer edge of the positioning groove (7) and the positioning groove (7) can accommodate the sealing cover (12) to be embedded.

7. The durable ball bearing according to claim 1, characterized in that: Both the inner ring (2) and the outer ring (1) are made of bearing steel.

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