Self-lubricating wear-resistant bearing of motor

Abstract

The utility model discloses a self-lubricating wear-resistant bearing of a motor, and relates to the technical field of motor bearings. The self-lubricating ball bearing comprises an outer ring, a self-lubricating assembly and a reset conveying assembly, an inner ring is arranged in the outer ring, the surface of the inner ring is sleeved with a retainer, balls are arranged on the inner wall of the retainer, the self-lubricating assembly comprises a sealing cover, and the bottom of the sealing cover is fixedly connected with the outer ring. Through the self-lubricating assembly, the push block is driven to rotate synchronously when the inner ring rotates, continuous extrusion force is generated after the arc slope face of the push block makes contact with the trapezoidal slope face of the extrusion block, the pressing ring is forced to move downwards stably along the surface of the installation sleeve, and lubricating oil stored in the sealing cover is guided into a rolling friction area between the outer ring and the inner ring through the oil inlet hole; the lubricant can be automatically supplemented, the situation that abrasion is aggravated due to hysteresis of manual oil injection is avoided, and the long-acting stability of a lubricating system under the closed working condition is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of motor bearing technology, and in particular relates to a self-lubricating and wear-resistant bearing for motors. Background Technology

[0002] Motor bearings are key mechanical components installed between the motor rotor and stator to support rotor rotation and reduce frictional losses. They typically consist of an inner ring, an outer ring, rolling elements, and a cage. They reduce energy loss by replacing sliding friction with rolling friction. Their performance directly affects the motor's operating efficiency, noise level, and service life, and they must possess high precision, wear resistance, impact resistance, and the ability to adapt to different speeds and loads.

[0003] Traditional motor bearings, during long-term operation, cannot replenish the lubricating medium automatically after it is consumed, leading to direct contact between the friction pair surfaces. This causes problems such as increased friction coefficient and aggravated abnormal wear. Existing technologies often employ periodic manual lubrication or complex external lubrication systems. However, manual maintenance suffers from operational lag, and external systems increase structural complexity. Furthermore, in enclosed or continuous operation scenarios, it is difficult to ensure the effective supply and uniform distribution of lubricant. Ultimately, this results in wear failure of the bearing working surface due to localized lubrication deficiency, shortening the equipment's service life and hindering its use.

[0004] To address these issues, we provide a self-lubricating and wear-resistant bearing for electric motors. Utility Model Content

[0005] The purpose of this invention is to provide a self-lubricating and wear-resistant bearing for motors. By combining the self-lubricating component and the reset conveying component, it solves the problem that existing motor bearings lack self-lubricating function, which easily leads to untimely addition of lubricating oil, resulting in increased wear on the bearing working surface due to local lubrication deficiency.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0007] This utility model relates to a self-lubricating and wear-resistant bearing for an electric motor, comprising an outer ring, a self-lubricating component, and a reset conveying component. An inner ring is disposed inside the outer ring, and a retainer is fitted onto the surface of the inner ring. Ball bearings are disposed on the inner wall of the retainer. The self-lubricating component includes a sealing cover, the bottom of which is fixedly connected to the outer ring. An mounting sleeve is disposed on the inner wall of the inner ring, and a pressure ring is fitted onto the surface of the inner ring. A pressing block is fixedly connected to the top of the pressure ring. Push blocks are fixedly connected to the top of both the front and rear sides of the mounting sleeve. The reset conveying component includes a spring, the bottom of which is fixedly connected to the pressure ring. Oil drain pipes are connected to both sides of the bottom of the pressure ring. A positioning rod is disposed within the inner cavity of the oil drain pipe, the bottom of which is fixedly connected to the outer ring. An oil inlet hole is provided at the top of the outer ring.

[0008] The present invention is further provided in that sealing plugs are provided on both sides of the top of the sealing cover, and the bottom of the sealing plugs extends into the inner cavity of the sealing cover. The sealing plugs can seal the oil injection hole at the top of the sealing cover, which facilitates the sealing of the oil injection hole.

[0009] The present invention is further configured such that the inner diameter of the oil drain pipe is greater than the outer diameter of the positioning rod, an oil drain gap is left between the oil drain pipe and the positioning rod, the outer diameter of the positioning rod is smaller than the inner diameter of the oil drain pipe, and there is a gap between the two, which allows the lubricating oil to be discharged to the bottom of the pressure ring.

[0010] The present invention is further configured such that the bottom of the spring is fixedly connected to the outer ring, the shape of the compression block is trapezoidal, and both sides of the compression block are provided with inclined slopes, so that the spring can facilitate the reset of the pressure ring after being compressed, and the lubricating oil can flow into the bottom of the pressure ring through the oil drain pipe during the reset process.

[0011] The present invention is further configured such that the inner wall of the pressure ring is slidably connected to the surface of the mounting sleeve, and the inner wall of the inner ring is interference-fitted to the surface of the mounting sleeve. The pressure ring can cooperate with the mounting sleeve, so that the mounting sleeve can rotate smoothly, and the interference-fitted inner ring facilitates the use of the push block.

[0012] The present invention is further provided that both sides of the top of the sealing cover are provided with through holes for use with the sealing plug, and a baffle is fixedly connected to the top of the sealing plug. The through holes facilitate the injection of lubricating oil into the interior of the sealing cover, and the baffle is used to limit the sealing plug.

[0013] The present invention is further configured such that both sides of the push block are provided with arc-shaped slopes, and the top of the inner wall of the sealing cover is provided with an annular sealing ring. The arc-shaped slopes facilitate the push block to press the inclined surface of the extrusion block, and the annular sealing ring can increase the sealing effect of the sealing cover.

[0014] The present invention has the following beneficial effects.

[0015] 1. This utility model utilizes a self-lubricating component. When the inner ring rotates, it drives the push block to rotate synchronously. After the arc-shaped slope of the push block contacts the trapezoidal inclined surface of the extrusion block, a continuous extrusion force is generated, which forces the pressure ring to move steadily downward along the surface of the mounting sleeve. The lubricating oil stored inside the sealing cover is introduced into the rolling friction area between the outer and inner rings through the oil inlet hole, realizing the self-replenishment of lubricant. This avoids the situation of accelerated wear caused by the lag of manual oil injection and ensures the long-term stability of the lubrication system under closed working conditions.

[0016] 2. This utility model utilizes a reset conveying assembly. During the downward movement of the pressure ring under pressure, the spring accumulates elastic potential energy. When the push block and the extrusion block disengage, the spring pushes the pressure ring to reset quickly. At this time, the annular gap between the oil drain pipe and the positioning rod forms a flow channel for the lubricant. During the pressure ring reset process, the lubricating oil can enter the bottom of the pressure ring. Simultaneously, the positioning rod guides and restricts the movement trajectory of the oil drain pipe, preventing the pressure ring from deviating or getting stuck during reset. Through periodic extrusion and reset actions, the lubricant is circulated, conveyed, and diffused, reducing the risk of abnormal wear on the bearing working surface. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0018] Figure 1 A three-dimensional view of a self-lubricating and wear-resistant bearing for an electric motor;

[0019] Figure 2 A cross-sectional view of a self-lubricating and wear-resistant bearing for an electric motor;

[0020] Figure 3 An exploded view of a self-lubricating component in a self-lubricating and wear-resistant bearing for an electric motor.

[0021] Figure 4 This is a schematic diagram of the outer ring, mounting sleeve, and push block in a self-lubricating and wear-resistant bearing for an electric motor.

[0022] Figure 5 An exploded view of a reset conveyor assembly in a self-lubricating and wear-resistant bearing for an electric motor.

[0023] In the attached diagram: 1. Outer ring; 2. Inner ring; 3. Cage; 4. Ball bearing; 5. Self-lubricating assembly; 51. Sealing cover; 52. Mounting sleeve; 53. Pressure ring; 54. Extrusion block; 55. Push block; 6. Reset conveying assembly; 61. Spring; 62. Oil drain pipe; 63. Positioning rod; 64. Oil inlet; 7. Sealing plug. Detailed Implementation

[0024] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example 1

[0026] Please see Figure 1-5This utility model is a self-lubricating and wear-resistant bearing for an electric motor, comprising an outer ring 1, a self-lubricating component 5, and a reset conveying component 6. An inner ring 2 is provided inside the outer ring 1, and a retainer 3 is fitted on the surface of the inner ring 2. Ball bearings 4 are provided on the inner wall of the retainer 3. The self-lubricating component 5 includes a sealing cover 51, the bottom of which is fixedly connected to the outer ring 1. An installation sleeve 52 is provided on the inner wall of the inner ring 2, and a pressure ring 53 is fitted on the surface of the inner ring 2. A pressing block 54 is fixedly connected to the top of the pressure ring 53. Push blocks 55 are fixedly connected to the top of the front and rear sides of the installation sleeve 52. The reset conveying component 6 includes a spring 61, the bottom of which is fixedly connected to the pressure ring 53. Oil drain pipes 62 are connected to both sides of the bottom of the pressure ring 53. A positioning rod 63 is provided in the inner cavity of the oil drain pipe 62, and the bottom of the positioning rod 63 is fixedly connected to the outer ring 1. An oil inlet hole 64 is provided on the top of the outer ring 1.

[0027] Specifically: the inner ring 2 can cooperate with the outer ring 1 to install the cage 3 and the ball 4; the sealing cover 51 can protect the components of the self-lubricating assembly 5 and store the lubricating oil; the mounting sleeve 52 can facilitate the rotation of the motor rotor control push block 55; during the rotation of the push block 55, it can squeeze the extrusion block 54, causing it to control the pressure ring 53 to move downward, injecting some lubricating oil into the outer ring 1 through the oil inlet 64; the spring 61 can reset the pressure ring 53 after being compressed; the oil drain pipe 62 can cooperate with the positioning rod 63 to limit the pressure ring 53 and deliver the lubricating oil.

[0028] Example 2

[0029] Please see Figure 1-5 Based on Embodiment 1, sealing plugs 7 are provided on both sides of the top of the sealing cover 51. The bottom of the sealing plugs 7 extends into the inner cavity of the sealing cover 51. The inner diameter of the oil drain pipe 62 is larger than the outer diameter of the positioning rod 63. An oil drain gap is left between the oil drain pipe 62 and the positioning rod 63. The bottom of the spring 61 is fixedly connected to the outer ring 1. The extrusion block 54 is trapezoidal in shape. Inclined slopes are provided on both sides of the extrusion block 54. The inner wall of the pressure ring 53 is slidably connected to the surface of the mounting sleeve 52. The inner wall of the inner ring 2 is interference-fitted to the surface of the mounting sleeve 52. Through holes for use with sealing plugs 7 are provided on both sides of the top of the sealing cover 51. A baffle is fixedly connected to the top of the sealing plug 7. Arc slopes are provided on both sides of the push block 55. An annular sealing ring is provided on the top of the inner wall of the sealing cover 51.

[0030] Specifically: the sealing plug 7 can seal the oil injection hole at the top of the sealing cover 51, facilitating the sealing of the oil injection hole; the outer diameter of the positioning rod 63 is smaller than the inner diameter of the oil drain pipe 62, and there is a gap between them, which allows lubricating oil to be discharged to the bottom of the pressure ring 53; the spring 61 facilitates the reset of the pressure ring 53 after being compressed, so that lubricating oil can flow into the bottom of the pressure ring 53 through the oil drain pipe 62 during the reset process; the pressure ring 53 can cooperate with the mounting sleeve 52, so that the mounting sleeve 52 can rotate smoothly; the interference fit inner ring 2 facilitates the use of the push block 55; the through hole facilitates the injection of lubricating oil into the interior of the sealing cover 51; the baffle is used to limit the sealing plug 7; the arc slope surface facilitates the push block 55 to squeeze the inclined surface of the extrusion block 54; and the annular sealing ring can increase the sealing effect of the sealing cover 51.

[0031] The working principle of this utility model is as follows: When the motor starts, the inner ring 2 rotates with the rotor, causing the mounting sleeve 52 to rotate synchronously. During the rotation, the push block 55 continuously contacts the trapezoidal inclined surface of the extrusion block 54 through the arc slope. Through the extrusion force, the pressure ring 53 moves smoothly downward along the surface of the mounting sleeve 52. At this time, the lubricating oil stored inside the sealing cover 51 is pressurized and enters the rolling friction area between the outer ring 1 and the inner ring 2 through the oil inlet 64, completing the automatic replenishment of the lubricating medium. When the push block 55 disengages from the extrusion block 54, the compressed spring 61 returns to its original position. The dynamic pressure ring 53 quickly resets, at which point the annular gap between the oil drain pipe 62 and the positioning rod 63 forms a flow channel for lubricating oil, allowing the lubricating oil to flow to the bottom of the pressure ring 53. During the reset process, the positioning rod 63 guides the oil drain pipe 62 to ensure the perpendicularity of the movement trajectory of the pressure ring 53 and prevent the pressure ring 53 from tilting during movement. Each time, a small amount of lubricating oil is injected into the outer ring 1 through the oil inlet hole 64. By continuously supplying oil, the lubrication performance between the balls 4, the inner ring 2, and the outer ring 1 is maintained, reducing the risk of abnormal wear on the bearing working surface.

[0032] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. A self-lubricating and wear-resistant bearing for an electric motor, comprising an outer ring (1), a self-lubricating assembly (5), and a reset conveying assembly (6), characterized in that: The outer ring (1) is provided with an inner ring (2), and a retainer (3) is sleeved on the surface of the inner ring (2). The inner wall of the retainer (3) is provided with balls (4). The self-lubricating component (5) includes a sealing cover (51), the bottom of which is fixedly connected to the outer ring (1), an installation sleeve (52) is provided on the inner wall of the inner ring (2), a pressure ring (53) is sleeved on the surface of the inner ring (2), a pressing block (54) is fixedly connected to the top of the pressure ring (53), and a push block (55) is fixedly connected to the top of the front and rear sides of the installation sleeve (52); The reset conveying assembly (6) includes a spring (61), the bottom of which is fixedly connected to a pressure ring (53). Both sides of the bottom of the pressure ring (53) are connected to an oil drain pipe (62). The inner cavity of the oil drain pipe (62) is provided with a positioning rod (63). The bottom of the positioning rod (63) is fixedly connected to an outer ring (1). The top of the outer ring (1) is provided with an oil inlet hole (64).

2. The self-lubricating and wear-resistant bearing for an electric motor according to claim 1, characterized in that: Both sides of the top of the sealing cover (51) are provided with sealing plugs (7), and the bottom of the sealing plugs (7) extends into the inner cavity of the sealing cover (51).

3. The self-lubricating and wear-resistant bearing for an electric motor according to claim 1, characterized in that: The inner diameter of the oil drain pipe (62) is larger than the outer diameter of the positioning rod (63), and an oil drain gap is left between the oil drain pipe (62) and the positioning rod (63).

4. The self-lubricating and wear-resistant bearing for an electric motor according to claim 1, characterized in that: The bottom of the spring (61) is fixedly connected to the outer ring (1), the shape of the extrusion block (54) is trapezoidal, and both sides of the extrusion block (54) are provided with inclined slopes.

5. The self-lubricating and wear-resistant bearing for an electric motor according to claim 1, characterized in that: The inner wall of the pressure ring (53) is slidably connected to the surface of the mounting sleeve (52), and the inner wall of the inner ring (2) is interference-fitted to the surface of the mounting sleeve (52).

6. The self-lubricating and wear-resistant bearing for an electric motor according to claim 2, characterized in that: Both sides of the top of the sealing cover (51) are provided with through holes for use with the sealing plug (7), and a baffle is fixedly connected to the top of the sealing plug (7).

7. The self-lubricating and wear-resistant bearing for an electric motor according to claim 1, characterized in that: Both sides of the push block (55) are provided with arc-shaped slopes, and the top of the inner wall of the sealing cover (51) is provided with an annular sealing ring.

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