Bearing positioning structure of three-phase asynchronous motor

Abstract

The utility model relates to the technical field of bearing positioning, and discloses a three-phase asynchronous motor bearing positioning structure, which comprises an end cover, the inner wall of the end cover is fixedly connected with a fixed column, the inner circumference of the fixed column is fixedly connected with a mounting sleeve, the inner wall of the mounting sleeve is connected with a bearing main body through a sliding block, and the inner wall of the bearing main body is fixedly connected with a limiting piece. A limiting mechanism is arranged on the inner wall of the mounting sleeve, a bearing outer layer is fixedly connected to the inner wall of the sliding block, a rotating column is rotationally connected to the inner wall of the bearing outer layer, and a bearing inner layer is rotationally connected to the inner circumference of the rotating column. The bearing body is installed in the installation sleeve through the sliding block, the sliding block is limited through the baffle, the bearing body can be positioned, the pull rod is rotated to enable the fixing disc to drive the baffle to rotate, limiting of the baffle to the sliding block is canceled, and then the bearing body is popped out through the sliding block under the action of the second spring. And therefore, the bearing main body is simpler and quicker to disassemble and assemble.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing positioning, in particular to a bearing positioning structure for a three-phase asynchronous motor. Background Art

[0002] A three-phase asynchronous motor is a type of induction motor powered by three phases of 380V AC (with a phase difference of 120 degrees). Because the rotor and stator's rotating magnetic field rotate in the same direction but at different speeds, a slip exists, hence the name. The rotor speed of a three-phase asynchronous motor is lower than that of the rotating magnetic field. The relative motion between the rotor winding and the magnetic field generates an electromotive force and current, which interacts with the magnetic field to produce electromagnetic torque, achieving energy conversion.

[0003] Traditional motor designs often lack an effective bearing positioning structure, which may lead to unstable bearing positioning during operation. Inaccurate bearing position will cause uneven gaps between the rotor and stator of the motor, thereby increasing additional friction and wear. Therefore, in order to address the problem of unstable positioning of existing bearings during operation, a three-phase asynchronous motor bearing positioning structure is needed to solve the above problem. Utility Model Content

[0004] In order to solve the problem of unstable positioning of bearings during operation in the prior art, the present application provides a bearing positioning structure for a three-phase asynchronous motor. The bearing body is installed in the mounting sleeve through a slider, and the slider is limited by a baffle, so that the bearing body can be positioned. By rotating the pull rod, the fixed disk drives the baffle to rotate, so that the baffle cancels the limitation of the slider. Then, under the action of spring 2, the bearing body is popped out by the slider, thereby making the disassembly and assembly of the bearing body simpler and faster.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] The bearing positioning structure of a three-phase asynchronous motor includes an end cover for protecting the motor, a fixing column fixedly connected to the inner wall of the end cover, a mounting sleeve fixedly connected to the inner periphery of the fixing column, the inner wall of the mounting sleeve connected to the bearing body via a slider, and a limiting member fixedly connected to the inner wall of the bearing body, and a limiting mechanism is provided on the inner wall of the mounting sleeve.

[0007] As a further improvement of the present invention, the limiting mechanism includes a fixed plate located on the inner wall of the mounting sleeve, a baffle is fixedly connected to the inner wall of the fixed plate, the baffle is arranged at the front end of the slider, the baffle is slidably connected to the front inner wall of the mounting sleeve, and the rear end of the fixed plate is connected to an elastic component through a tenon block, and the tenon block is fixedly connected to the rear end of the fixed plate.

[0008] As a further improvement of the present invention, the elastic component includes a movable disk located at the rear end of the tenon block, and a spring 1 is provided at the rear end of the movable disk.

[0009] As a further improvement of the present invention, a pull rod is fixedly connected to the front end of the fixing plate, and the pull rod is slidably connected to the front end of the mounting sleeve.

[0010] As a further improvement of the present invention, one end of the spring is arranged at the rear end of the movable disk, and the other end of the spring is arranged on the inner wall of the mounting sleeve.

[0011] As a further improvement of the present invention, a second spring is provided at the rear end of the slider, one end of the second spring is provided at the rear end of the slider, and the other end of the second spring is provided on the inner wall of the mounting sleeve.

[0012] As a further improvement of the present invention, the inner wall of the slider is fixedly connected to the outer layer of the bearing, the inner wall of the outer layer of the bearing is rotatably connected to a rotating column, and the inner circumference of the rotating column is rotatably connected to the inner layer of the bearing.

[0013] As a further improvement of the present invention, the inner wall of the inner layer of the bearing is fixedly connected with a tenon, and the inner wall of the inner layer of the bearing is connected to the driving shaft of the motor through the tenon.

[0014] In summary, compared with the prior art, this application has at least one of the following beneficial technical effects:

[0015] 1. In the present invention, the bearing body is installed in the mounting sleeve through a slider and the slider is limited by a baffle, so that the bearing body can be stably positioned, and the bearing body is fixed to the center part of the end cover under the action of the fixing column and the end cover, which can effectively support the bearing body and maintain the concentricity of the bearing body and the transmission rod, thereby reducing the vibration and noise caused by the eccentricity of the bearing body, thereby improving the stability of the motor.

[0016] 2. In the present invention, the fixed plate drives the baffle to rotate by rotating the pull rod, so that the baffle cancels the limit on the slider, and then the bearing body is ejected by the slider under the action of the second spring, thereby making the disassembly and assembly of the bearing body simpler and faster, reducing the labor intensity and time of maintenance personnel, and thus reducing the complexity of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the axonometric drawing of the bearing positioning structure of the three-phase asynchronous motor proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the tenon structure of the bearing positioning structure of the three-phase asynchronous motor proposed by the present invention;

[0019] Figure 3This is a schematic diagram of the baffle structure of the bearing positioning structure of the three-phase asynchronous motor proposed by the present invention;

[0020] Figure 4 This is a schematic diagram of the slider structure of the bearing positioning structure of the three-phase asynchronous motor proposed by the present invention;

[0021] Figure 5 This is a schematic diagram of the tenon block structure of the bearing positioning structure of the three-phase asynchronous motor proposed by the present invention.

[0022] Legend:

[0023] 1. End cover; 2. Fixed column; 3. Mounting sleeve; 4. Slider; 5. Inner bearing layer; 6. Tenon; 7. Pull rod; 8. Fixed plate; 9. Baffle; 10. Tenon block; 11. Moving plate; 12. Spring 1; 13. Spring 2; 14. Rotating column; 15. Outer bearing layer. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0025] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without making any creative efforts shall fall within the scope of protection of the present application.

[0026] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0027] In the description of this application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the product of the application is usually placed when in use. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as a limitation on this application. In addition, if the terms "first", "second", etc. appear in the description of this application, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0028] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this application does not necessarily imply that a component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical" and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0029] It should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. A person of ordinary skill in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0030] Example 1:

[0031] Reference Figure 1-Figure 5 The bearing positioning structure of the three-phase asynchronous motor includes an end cover 1 for protecting the motor. The inner wall of the end cover 1 is fixedly connected to a fixing column 2, the inner periphery of the fixing column 2 is fixedly connected to a mounting sleeve 3, the inner wall of the mounting sleeve 3 is connected to the bearing body through a slider 4, and the inner wall of the bearing body is fixedly connected to a limiting member. A fixed disk 8 is provided on the inner wall of the mounting sleeve 3, and the rear end of the fixed disk 8 is connected to a movable disk 11 through a tenon block 10.

[0032] Among them, the movable plate 11 is located at the rear end of the tenon block 10, and the rear end of the movable plate 11 is provided with a spring 12. One end of the spring 12 is provided at the rear end of the movable plate 11, and the other end of the spring 12 is provided on the inner wall of the mounting sleeve 3. The inner wall of the slider 4 is fixedly connected to the outer layer 15 of the bearing. The inner wall of the outer layer 15 of the bearing is rotatably connected to the rotating column 14. The inner circumference of the rotating column 14 is rotatably connected to the inner layer 5 of the bearing. The inner wall of the inner layer 5 of the bearing is fixedly connected to the tenon 6, and the inner wall of the inner layer 5 of the bearing is connected to the drive shaft of the motor through the tenon 6.

[0033] Specifically, the bearing body includes a bearing inner layer 5, a rotating column 14 and a bearing outer layer 15. By installing the bearing body into the mounting sleeve 3 through the slider 4 and limiting the slider 4 through the baffle 9, the bearing body can be stably positioned, and under the action of the fixed column 2 and the end cover 1, the bearing body can be stably fixed to the center part of the end cover 1, which can effectively support the bearing body and maintain the concentricity of the bearing body and the transmission rod, reduce the vibration and noise caused by the eccentricity of the bearing body, and thus improve the stability of the motor. Under the action of the spring 12, the movable disk 11 can limit the fixed disk 8 through the tenon block 10, and can limit the drive shaft of the motor through the tenon 6, thereby improving the utilization rate of the bearing body by the drive shaft of the motor when rotating.

[0034] Example 2:

[0035] As one of the optimized structural designs for Example 1, Figure 1 and Figure 5 As shown, a fixed plate 8 is located on the inner wall of the mounting sleeve 3, a baffle 9 is fixedly connected to the inner wall of the fixed plate 8, the baffle 9 is arranged at the front end of the slider 4, the baffle 9 is slidably connected to the front inner wall of the mounting sleeve 3, a pull rod 7 is fixedly connected to the front end of the fixed plate 8, the pull rod 7 is slidably connected to the front end of the mounting sleeve 3, a spring 2 13 is provided at the rear end of the slider 4, one end of the spring 2 13 is provided at the rear end of the slider 4, and the other end of the spring 2 13 is provided on the inner wall of the mounting sleeve 3;

[0036] Specifically, by rotating the pull rod 7, the fixed plate 8 drives the baffle 9 to rotate, so that the baffle 9 cancels the limit on the slider 4, and then the bearing body is popped out through the slider 4 under the action of the spring 2 13, thereby making the disassembly and assembly of the bearing body simpler and faster, reducing the labor intensity and time of maintenance personnel, and thus reducing the complexity of maintenance.

[0037] After the eccentricity of the bearing body is reduced, the eccentricity of the bearing body and the transmission rod are maintained, and the vibration and noise caused by the eccentricity of the bearing body are reduced. When the bearing body needs to be maintained, the fixed plate 8 drives the baffle 9 to rotate by rotating the pull rod 7, so that the baffle 9 cancels the limit of the fixed plate 8 by the tenon 10, and then the bearing body is ejected by the slider 4 under the action of the spring 2 13, thereby making the disassembly and assembly of the bearing body simpler and faster, and reducing the labor intensity and time of the maintenance personnel.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. 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. The bearing positioning structure of a three-phase asynchronous motor is characterized by: The invention comprises an end cover (1) for protecting an electric motor, wherein a fixing column (2) for supporting is fixedly connected to the inner wall of the end cover (1), a mounting sleeve (3) for positioning is fixedly connected to the inner periphery of the fixing column (2), the inner wall of the mounting sleeve (3) is connected to a bearing body via a slider (4), and a limiting member is fixedly connected to the inner wall of the bearing body, and a limiting mechanism is provided on the inner wall of the mounting sleeve (3).

2. The bearing positioning structure of a three-phase asynchronous motor according to claim 1, characterized in that: The limiting mechanism comprises a fixed plate (8) located on the inner wall of the mounting sleeve (3); a baffle (9) is fixedly connected to the inner wall of the fixed plate (8); the baffle (9) is arranged at the front end of the slider (4); the baffle (9) is slidably connected to the front inner wall of the mounting sleeve (3); the rear end of the fixed plate (8) is connected to an elastic component through a tenon (10); the tenon (10) is fixedly connected to the rear end of the fixed plate (8).

3. The bearing positioning structure of a three-phase asynchronous motor according to claim 2, characterized in that: The elastic component comprises a movable plate (11) located at the rear end of the tenon block (10), and a spring 1 (12) is provided at the rear end of the movable plate (11).

4. The bearing positioning structure of a three-phase asynchronous motor according to claim 2, characterized in that: The front end of the fixed plate (8) is fixedly connected to a pull rod (7), and the pull rod (7) is slidably connected to the front end of the mounting sleeve (3).

5. The bearing positioning structure for a three-phase asynchronous motor according to claim 3, characterized in that: One end of the spring (12) is arranged at the rear end of the movable disk (11), and the other end of the spring (12) is arranged on the inner wall of the mounting sleeve (3).

6. The bearing positioning structure for a three-phase asynchronous motor according to claim 1, characterized in that: A second spring (13) is provided at the rear end of the slider (4), one end of the second spring (13) is provided at the rear end of the slider (4), and the other end of the second spring (13) is provided on the inner wall of the mounting sleeve (3).

7. The bearing positioning structure for a three-phase asynchronous motor according to claim 1, characterized in that: The inner wall of the slider (4) is fixedly connected to the outer layer of the bearing (15), the inner wall of the outer layer of the bearing (15) is rotatably connected to the rotating column (14), and the inner circumference of the rotating column (14) is rotatably connected to the inner layer of the bearing (5).

8. The bearing positioning structure for a three-phase asynchronous motor according to claim 7, characterized in that: The inner wall of the bearing inner layer (5) is fixedly connected with a tenon (6), and the inner wall of the bearing inner layer (5) is connected to the motor drive shaft through the tenon (6).

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