Motor bearing mounting structure with sealing function

Abstract

The utility model discloses a motor bearing mounting structure with a sealing function, and particularly relates to the field of motor bearings, the motor bearing mounting structure comprises a motor body, a bearing, a rear shaft cover, a front shaft cover and a sealing assembly, the motor body comprises a stator and a rotor, the stator is mounted on the side wall of an inner cavity of the motor body, a rotating shaft is transversely mounted in the inner cavity of the motor body, and the rotor is mounted on the rotating shaft. A rotor is arranged on the outer diameter surface of the rotating shaft, bearings are arranged on the contact faces of the rotating shaft and the motor body, and sealing assemblies are arranged on the two sides of each bearing. The bearing is fixed through the limiting mechanism, when the bearing is installed, due to the fact that no gap exists between the bearing and the motor body, when the bearing is installed, a corresponding position needs to be hammered, when the bearing is installed through the limiting mechanism, the bearing does not need to be hammered to the corresponding position, and the bearing can be installed by changing the diameter in the limiting mechanism. And the bearing is fixed through the limiting mechanism, and the hidden danger of bearing damage is avoided.

Description

Technical Field

[0001] The utility model relates to the field of motor bearings, and more specifically, to a motor bearing mounting structure with a sealing function. Background Art

[0002] Motor bearings are specialized bearings used in electric motors or motors. Their basic function is to support the motor rotor, maintain the stability and accuracy of the rotor during operation, reduce friction and wear, reduce energy loss and temperature rise, and improve motor efficiency and life. Bearings are key components in motors and are directly related to the normal operation and service life of the motor.

[0003] The installation quality of motor bearings directly affects their accuracy, lifespan, and performance. During installation, care should be taken to clean the bearings and related parts, check the dimensions and finish, and select the appropriate installation method based on the bearing structure and fit properties. Common installation methods include press fit and heat fit.

[0004] For example, application number CN202222023210.5 discloses a motor bearing mounting structure, which aims to provide a motor bearing mounting structure with good versatility, which is suitable for installing both ball bearings and oil-containing bearings, and is conducive to simplifying the motor bearing mounting structure of motor components; the above-mentioned device cannot adjust the diameter of the installed bearing during the bearing installation process, and thus, when installing the bearing, it is necessary to hammer the bearing into the corresponding position, seal both sides of the bearing with a sealing ring, and at the same time, install the rotating shaft limiter on the inner diameter surface of the bearing. During the hammering process, there is a hidden danger of damaging the bearing;

[0005] Therefore, in order to solve the above problems, a motor bearing mounting structure with a sealing function is proposed. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a motor bearing mounting structure with a sealing function to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solutions: a motor bearing mounting structure with a sealing function, comprising a motor body, a bearing, a rear axle cover, a front axle cover and a sealing assembly, wherein the motor body comprises a stator and a rotor, the stator being mounted on the side wall of the inner cavity of the motor body, a rotating shaft being transversely mounted on the inner cavity of the motor body, and a rotor being disposed on the outer diameter surface of the rotating shaft, bearings being disposed on the contact surfaces of the rotating shaft and the motor body, a rear axle cover being disposed on the side end surface of the motor body, and a front axle cover being disposed on the side of the motor body away from the rear axle cover, sealing assemblies being disposed on both sides of the bearing, and the bearing being limitatively connected to the motor body via a limiting mechanism;

[0008] The limiting mechanism includes a first limiting ring and a second limiting ring, the inner diameter surface of the first limiting ring is connected to the second limiting ring through a connecting rod, and a limiting block is provided at one end of the connecting rod, the side end surface of the first limiting ring is penetrated by a first slide groove, and a sliding rod is provided on the inner side of the first slide groove, one end of the sliding rod is connected to the second limiting ring through a slider, and the contact surface between the sliding rod and the slider is provided with a second slide groove, the contact surface between the connecting rod and the first limiting ring and the second limiting ring is provided with a ceramic shaft, and the inner diameter surface of the first limiting ring is provided with a stop block.

[0009] Preferably, the bearing includes a first shaft ring and a second shaft ring, the second shaft ring is arranged on the inner side of the first shaft ring, and the third shaft ring is arranged on the inner side of the second shaft ring, the contact surfaces of the first shaft ring and the third shaft ring with the second shaft ring are all provided with limiting grooves, and balls are arranged on the inner sides of the limiting grooves, and oil grooves are arranged between adjacent limiting grooves.

[0010] Preferably, the sealing assembly includes a step seal, a grid ring and a Y-type sealing ring, and two groups of the grid ring and the Y-type sealing ring are provided. The two groups of the grid rings are located between the two groups of Y-type sealing rings. A step seal is provided between the two groups of the grid rings, and the contact surface between the motor body and the rotating shaft, the contact surface between the second limiting ring and the bearing, and the contact surface between the sealing assembly and the motor body and the bearing are all provided with sealing assemblies, and a labyrinth sealing cover is provided at one end of the rotating shaft.

[0011] Preferably, the connecting rod forms a rotating structure that rotates around the ceramic shaft through the ceramic shaft, the first limiting ring and the second limiting ring, the first slide groove and the slide rod form a sliding structure, the slider and the second slide groove form a sliding structure, the connecting rod and the limiting block are provided in several groups, and the slide rod is provided in two groups.

[0012] Preferably, the first shaft ring, the second shaft ring and the third shaft ring are installed with a sealing assembly, the limiting grooves, the balls and the oil grooves are provided in several groups, and the rear axle cover and the front axle cover are both connected to the motor body with detachable bolts.

[0013] Preferably, the step seal and the Gly ring are both composed of an O-ring and a polytetrafluoroethylene ring stacked together, the Y-shaped sealing ring is specifically made of a fluororubber, and the contact surfaces of the motor body and the rotating shaft are both provided with sealing components.

[0014] The technical effects and advantages of this utility model are:

[0015] Compared with the prior art, this motor bearing mounting structure with a sealing function fixes the bearing through a limiting mechanism when in use. When installing the bearing, since there cannot be a gap between the bearing and the motor body, it is necessary to hammer the corresponding position when installing the bearing. When installing the bearing through the limiting mechanism, there is no need to hammer the bearing at the corresponding position. By changing the diameter in the limiting mechanism and then using the limiting mechanism to fix the bearing, the hidden danger of bearing damage is avoided.

[0016] Compared with the prior art, this motor bearing mounting structure with a sealing function, when in use, first assembles the stator, rotor and rotating shaft in the motor body, and the contact surfaces of the rotating shaft and the motor body are provided with limiting mechanisms, and the inner diameter of the limiting mechanism is connected to the bearing through a sealing assembly, wherein the sealing of the device is ensured by the step seal, grid ring and Y-type sealing ring in the sealing assembly, and since two sets of Y-type sealing rings are installed, it can prevent lubricant leakage and block dust and moisture from entering, and the bearing is composed of a first shaft ring, a second shaft ring, a third shaft ring, a limiting groove, a ball and an oil groove, wherein the oil is stored in the limiting groove and the oil groove to facilitate lubrication of the device, ensure the supply of lubricant, and at the same time increase the sealing of the device, and wherein the rear shaft cover and the front shaft cover are respectively installed on both sides of the contact surface of the rotating shaft and the motor body, and the labyrinth sealing cover is used to seal one end of the rotating shaft to prevent tiny particles from entering the inner cavity of the motor body and prevent the inner cavity of the motor body from being contaminated.

[0017] Compared with the prior art, this motor bearing mounting structure with a sealing function, when in use, the sliding rod is toggled, the sliding rod slides along the first sliding groove, and the sliding rod drives the second limiting ring to rotate through the sliding block and the second sliding groove. At the same time, the second limiting ring is connected to a connecting rod through a ceramic shaft, and one end of the connecting rod is installed on the inner diameter of the first limiting ring through the ceramic shaft. At this time, the connecting rod forms a rotating structure that rotates around the ceramic shaft through the ceramic shaft, the first limiting ring and the second limiting ring, thereby changing the position of the limiting block, changing the diameter of the limiting mechanism, and placing the bearing on the inner side of the limiting block. After the above steps, the bearing is limited, and the position of the connecting rod is blocked by the stop block to avoid unstable clamping of the bearing by the limiting mechanism. The above steps are achieved when installing the bearing, after the bearing is placed on the inner side of the limiting mechanism, the bearing is clamped by the limiting mechanism to avoid hammering the bearing and preventing damage to the bearing during the installation process, thereby affecting the use of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front view structural diagram of the utility model.

[0019] Figure 2 This is a schematic diagram of the front cross-section structure of the motor body of the present invention.

[0020] Figure 3 This is a schematic diagram of the disassembled structure of the rear axle cover of the present invention.

[0021] Figure 4 It is a schematic diagram of the side sectional structure of the limiting mechanism of the utility model.

[0022] Figure 5 This is a schematic diagram of the front view structure of the first limiting ring of the utility model.

[0023] Figure 6 This is a schematic diagram of the side sectional structure of the bearing of the present utility model.

[0024] Figure 7 This is a schematic diagram of the front cross-section structure of the sealing component of the present invention.

[0025] The accompanying drawings are marked as follows: 1. Motor body; 101. Stator; 102. Rotor; 103. Rotating shaft; 2. Bearing; 21. First shaft ring; 22. Second shaft ring; 23. Third shaft ring; 24. Limiting groove; 25. Ball; 26. Oil groove; 3. Rear axle cover; 4. Front axle cover; 5. Sealing assembly; 51. Step seal; 52. Gly ring; 53. Y-type sealing ring; 6. Limiting mechanism; 601. First limiting ring; 602. Second limiting ring; 603. Connecting rod; 604. Limiting block; 605. First slide groove; 606. Slide rod; 607. Sliding block; 608. Second slide groove; 609. Ceramic shaft; 6010. Stop block; 7. Labyrinth sealing cover. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Example 1

[0028] As attached Figures 1 to 3A motor bearing mounting structure with a sealing function is shown, comprising a motor body 1, a bearing 2, a rear axle cover 3, a front axle cover 4 and a sealing assembly 5. The motor body 1 comprises a stator 101 and a rotor 102. The stator 101 is mounted on the side wall of the inner cavity of the motor body 1. A rotating shaft 103 is transversely mounted in the inner cavity of the motor body 1, and the rotor 102 is provided on the outer diameter surface of the rotating shaft 103. The contact surfaces of the rotating shaft 103 and the motor body 1 are both provided with bearings 2. The rear axle cover 3 is provided on the side end surface of the motor body 1, and the front axle cover 4 is provided on the side of the motor body 1 away from the rear axle cover 3. Sealing assemblies 5 are provided on both sides of the bearing 2, and the bearing 2 is connected to the motor body 1 in a limiting manner via a limiting mechanism 6.

[0029] The limiting mechanism 6 includes a first limiting ring 601 and a second limiting ring 602. The inner diameter surface of the first limiting ring 601 is connected to the second limiting ring 602 through a connecting rod 603, and a limiting block 604 is provided at one end of the connecting rod 603. A first slide groove 605 is provided through the side end surface of the first limiting ring 601, and a slide rod 606 is provided on the inner side of the first slide groove 605. One end of the slide rod 606 is limitedly connected to the second limiting ring 602 through a slider 607, and a second slide groove 608 is provided on the contact surface between the slide rod 606 and the slider 607. A ceramic shaft 609 is provided on the contact surface between the connecting rod 603 and the first limiting ring 601 and the second limiting ring 602. A stop block 6010 is provided on the inner diameter surface of the first limiting ring 601.

[0030] Among them: first, the slide rod 606 is toggled, and the slide rod 606 slides along the first slide groove 605. The slide rod 606 drives the second limiting ring 602 to rotate by using the slider 607 and the second slide groove 608. At the same time, the second limiting ring 602 is connected to the connecting rod 603 by using the ceramic shaft 609, and one end of the connecting rod 603 is installed on the inner diameter of the first limiting ring 601 through the ceramic shaft 609. At this time, the connecting rod 603 uses the ceramic shaft 609 to form a rotating structure that rotates around the ceramic shaft 609 with the first limiting ring 601 and the second limiting ring 602, so as to change Change the position of the limit block 604, change the diameter of the limit mechanism 6, place the bearing 2 on the inner side of the limit block 604, use the above steps to limit the bearing 2, and use the block 6010 to block the position of the connecting rod 603 to prevent the limit mechanism 6 from clamping the bearing 2 unstable, so that when installing the bearing 2, place the bearing on the inner side of the limit mechanism 6, and then use the limit mechanism 6 to clamp the bearing 2 to avoid hammering the bearing 2, prevent the bearing 2 from being damaged during the installation process, and affect the service life of the bearing 2.

[0031] Example 2

[0032] Based on Example 1, the solution in Example 1 is further detailed in combination with the following specific working methods. Figures 1 to 7As shown, see the following description for details:

[0033] As a preferred embodiment, the bearing 2 includes a first shaft ring 21 and a second shaft ring 22, the second shaft ring 22 is arranged on the inner side of the first shaft ring 21, and the third shaft ring 23 is arranged on the inner side of the second shaft ring 22, the contact surfaces of the first shaft ring 21 and the third shaft ring 23 with the second shaft ring 22 are all provided with limiting grooves 24, and the inner side of the limiting grooves 24 is provided with balls 25, and oil grooves 26 are provided between adjacent limiting grooves 24, and the bearing 2 is composed of the first shaft ring 21, the second shaft ring 22, the third shaft ring 23, the limiting grooves 24, the balls 25 and the oil grooves 26, wherein the limiting grooves 24 and the oil grooves 26 are used to store oil, which is convenient for lubricating the device and ensuring the supply of lubricant, while also increasing the sealing of the device.

[0034] As a preferred embodiment, the sealing assembly 5 includes a step seal 51, a grid ring 52 and a Y-type sealing ring 53. Two groups of grid rings 52 and Y-type sealing rings 53 are provided. The two groups of grid rings 52 are located between the two groups of Y-type sealing rings 53. A step seal 51 is provided between the two groups of grid rings 52. The contact surface between the motor body 1 and the rotating shaft 103, the contact surface between the second limiting ring 602 and the bearing 2, and the contact surface between the sealing assembly 5 and the motor body 1 and the bearing 2 are all provided with a sealing assembly 5. A labyrinth sealing cover 7 is provided at one end of the rotating shaft 103. When in use, the stator 101, the rotor 102 and the rotating shaft 103 in the motor body 1 are first assembled, and the rotating shaft 103 is assembled. The contact surfaces of the shaft 103 and the motor body 1 are both provided with a limiting mechanism 6, and the inner diameter of the limiting mechanism 6 is connected to the bearing 2 through a sealing assembly 5, wherein the sealing performance of the device is ensured by the step seal 51, grid ring 52 and Y-type sealing ring 53 in the sealing assembly 5, and since two sets of Y-type sealing rings 53 are installed, it can prevent the lubricant from leaking and block the entry of dust and moisture, and the rear axle cover 3 and the front axle cover 4 are respectively installed on both sides of the contact surface between the rotating shaft 103 and the motor body 1, and the labyrinth sealing cover 7 is used to seal one end of the rotating shaft 103 to prevent tiny particles from entering the inner cavity of the motor body 1 and prevent the inner cavity of the motor body 1 from being contaminated.

[0035] As a preferred embodiment, the connecting rod 603 forms a rotating structure that rotates around the ceramic shaft 609 through the ceramic shaft 609, the first limiting ring 601 and the second limiting ring 602, the first slide groove 605 and the slide rod 606 form a sliding structure, the slider 607 and the second slide groove 608 form a sliding structure, the connecting rod 603 and the limiting block 604 are provided in several groups, and the slide rod 606 is provided in two groups.

[0036] As a preferred embodiment, the first shaft ring 21, the second shaft ring 22 and the third shaft ring 23 are installed with a sealing assembly 5, and several groups of limit grooves 24, balls 25 and oil grooves 26 are provided. The rear axle cover 3 and the front axle cover 4 are both connected to the motor body 1 by detachable bolts.

[0037] As a preferred embodiment, the step seal 51 and the grid ring 52 are both composed of an O-ring and a polytetrafluoroethylene ring stacked together, the Y-shaped sealing ring 53 is specifically made of a fluororubber, and the contact surfaces of the motor body 1 and the rotating shaft 103 are both provided with a sealing assembly 5.

[0038] The working process of the present utility model is as follows: when in use, first, the sliding rod 606 is toggled, and the sliding rod 606 slides along the first sliding groove 605. The sliding rod 606 drives the second limiting ring 602 to rotate through the slider 607 and the second sliding groove 608. At the same time, the second limiting ring 602 is connected to the connecting rod 603 through the ceramic shaft 609, and one end of the connecting rod 603 is limitedly installed on the inner diameter of the first limiting ring 601 through the ceramic shaft 609. At this time, the connecting rod 603 forms a rotating structure that rotates around the ceramic shaft 609 through the ceramic shaft 609, the first limiting ring 601 and the second limiting ring 602, thereby changing the position of the limiting block 604 and changing the diameter of the limiting mechanism 6;

[0039] After the bearing 2 is placed on the inner side of the limit block 604, the above steps are repeated to limit the bearing 2, and the position of the connecting rod 603 is blocked by the stop block 6010, and the stator 101, the rotor 102 and the rotating shaft 103 in the motor body 1 are assembled, and the contact surface of the rotating shaft 103 and the motor body 1 are provided with a limit mechanism 6, and the inner diameter of the limit mechanism 6 is connected to the bearing 2 by the sealing assembly 5, wherein the step seal 51 and the gray ring 5 in the sealing assembly 5 are used. 2 and Y-shaped sealing ring 53 ensure the sealing of this device, and the bearing 2 is composed of a first shaft ring 21, a second shaft ring 22, a third shaft ring 23, a limiting groove 24, a ball 25 and an oil groove 26, wherein the limiting groove 24 and the oil groove 26 are used to store the oil, and the rear shaft cover 3 and the front shaft cover 4 are respectively installed on both sides of the contact surface between the rotating shaft 103 and the motor body 1, and the labyrinth sealing cover 7 is used to seal one end of the rotating shaft 103 to prevent tiny particles from entering the inner cavity of the motor body 1.

[0040] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A motor bearing mounting structure with a sealing function, comprising a motor body (1), a bearing (2), a rear axle cover (3), a front axle cover (4) and a sealing assembly (5), characterized in that: The motor body (1) comprises a stator (101) and a rotor (102), wherein the stator (101) is mounted on the side wall of the inner cavity of the motor body (1), a rotating shaft (103) is transversely mounted in the inner cavity of the motor body (1), and the outer diameter surface of the rotating shaft (103) is provided with a rotor (102), and the contact surfaces of the rotating shaft (103) and the motor body (1) are both provided with bearings (2), a rear axle cover (3) is provided on the side end surface of the motor body (1), and a front axle cover (4) is provided on the side of the motor body (1) away from the rear axle cover (3), a sealing assembly (5) is provided on both sides of the bearing (2), and the bearing (2) is connected to the motor body (1) in a limiting manner through a limiting mechanism (6); The limiting mechanism (6) comprises a first limiting ring (601) and a second limiting ring (602), the inner diameter surface of the first limiting ring (601) is connected to the second limiting ring (602) via a connecting rod (603), and a limiting block (604) is provided at one end of the connecting rod (603), a first sliding groove (605) is provided through the side end surface of the first limiting ring (601), and a sliding rod (605) is provided on the inner side of the first sliding groove (605). 6), one end of the sliding rod (606) is connected to the second limiting ring (602) through a slider (607), and the contact surface between the sliding rod (606) and the slider (607) is provided with a second sliding groove (608), the contact surface between the connecting rod (603) and the first limiting ring (601) and the second limiting ring (602) is provided with a ceramic shaft (609), and the inner diameter surface of the first limiting ring (601) is provided with a stopper (6010).

2. The motor bearing mounting structure with sealing function according to claim 1, characterized in that: The bearing (2) comprises a first shaft ring (21) and a second shaft ring (22), wherein the second shaft ring (22) is arranged on the inner side of the first shaft ring (21), and the third shaft ring (23) is arranged on the inner side of the second shaft ring (22), and the contact surfaces of the first shaft ring (21) and the third shaft ring (23) with the second shaft ring (22) are all provided with limiting grooves (24), and balls (25) are arranged on the inner sides of the limiting grooves (24), and oil grooves (26) are provided between adjacent limiting grooves (24).

3. The motor bearing mounting structure with sealing function according to claim 1, characterized in that: The sealing assembly (5) includes a step seal (51), a grid ring (52) and a Y-type sealing ring (53), and two groups of the grid ring (52) and the Y-type sealing ring (53) are provided. The two groups of the grid ring (52) are located between the two groups of the Y-type sealing ring (53). The step seal (51) is provided between the two groups of the grid ring (52), and the contact surface between the motor body (1) and the rotating shaft (103), the contact surface between the second limiting ring (602) and the bearing (2), and the contact surface between the sealing assembly (5) and the motor body (1) and the bearing (2) are all provided with the sealing assembly (5), and a labyrinth sealing cover (7) is provided at one end of the rotating shaft (103).

4. The motor bearing mounting structure with sealing function according to claim 1, characterized in that: The connecting rod (603) forms a rotating structure that rotates around the ceramic shaft (609) through the ceramic shaft (609) and the first limiting ring (601) and the second limiting ring (602); the first sliding groove (605) and the sliding rod (606) form a sliding structure; the slider (607) and the second sliding groove (608) form a sliding structure; the connecting rod (603) and the limiting block (604) are both provided in several groups, and the sliding rod (606) is provided in two groups.

5. The motor bearing mounting structure with sealing function according to claim 2, characterized in that: The first shaft ring (21), the second shaft ring (22) and the third shaft ring (23) are installed with a sealing assembly (5), the limiting groove (24), the ball bearing (25) and the oil groove (26) are provided in a plurality of groups, and the rear shaft cover (3) and the front shaft cover (4) are both connected to the motor body (1) in a limiting manner through detachable bolts.

6. The motor bearing mounting structure with sealing function according to claim 3, characterized in that: The step seal (51) and the grid ring (52) are both composed of an O-ring and a polytetrafluoroethylene ring stacked together, and the Y-shaped sealing ring (53) is specifically made of a fluororubber. The contact surfaces of the motor body (1) and the rotating shaft (103) are both provided with a sealing assembly (5).

Images