A sealing structure for a three-phase synchronous motor housing

Abstract

The utility model discloses a sealing structure of a three-phase synchronous motor housing, including a motor housing, a first annular groove and a second annular groove are provided on the motor housing, the first annular groove is located on the inner side of the second annular groove, an annular sealing strip is fixedly connected to the inner side wall of the first annular groove, a glue channel is provided on the side wall of the motor housing, the glue channel runs through the side wall between the motor housing and the second annular groove, a channel plug is provided at one end of the glue channel, and the motor housing is connected to an end cover by bolts. The utility model adopts two methods of injecting sealing glue and extruding sealing strips to perform sealing treatment between the motor housing and the end cover, thereby improving the sealing effect of the motor and allowing the motor housing to be installed at a certain angle.

Description

Technical Field

[0001] The utility model relates to the technical field of three-phase synchronous motors, in particular to a sealing structure of a three-phase synchronous motor housing. Background Art

[0002] A synchronous motor is an AC motor that generates torque by the interaction between the DC-powered excitation magnetic field and the rotating magnetic field of the armature, and rotates at a synchronous speed. A synchronous motor is an AC motor with the same stator winding as an asynchronous motor. Its rotor rotation speed is the same as the speed of the rotating magnetic field generated by the stator winding, so it is called a synchronous motor.

[0003] For example, Chinese patent application No. 202121275885.8 discloses a three-phase synchronous motor that is easy to assemble, including a base, a shell is provided at the upper end of the base, a heat dissipation groove is provided on the outer wall of the shell near the top, and wind grooves are equidistantly provided on the side walls of the heat dissipation groove, an end cover is provided on the right side of the shell, a cover is provided on the left side of the shell, a plurality of groups of through grooves are equidistantly provided on the side of the cover near the heat dissipation groove, and a partition is provided between the inner side walls of the cover near the position of the shell; it can accurately and effectively improve the heat dissipation effect of the motor, reduce the temperature of the motor during operation, improve the dustproof effect, and effectively prevent dust from accumulating inside the motor;

[0004] In the above scheme, the motor housing and the end cover are threadedly connected and are not sealed. Due to the influence of some special work or special environment, a motor with high sealing performance is required. If the motor has poor sealing performance and cannot effectively resist the entry of dust, oil mist and moisture, it will cause the coordination of the motor components to be not precise enough, thereby reducing the stability of the motor and the transmission performance of the motor. In order to solve the above problems, we designed a sealing structure for the housing of a three-phase synchronous motor. Utility Model Content

[0005] The utility model provides a sealing structure of a three-phase synchronous motor housing to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A sealing structure for a three-phase synchronous motor housing comprises a motor housing, wherein a first annular groove and a second annular groove are provided on the motor housing, wherein the first annular groove is located on the inner side of the second annular groove, an annular sealing strip is fixedly connected to the inner side wall of the first annular groove, a glue channel is provided on the side wall of the motor housing, the glue channel runs through the side wall between the motor housing and the second annular groove, a channel plug is provided at one end of the glue channel, the motor housing is connected to an end cover by bolts, an annular sealing block is fixedly connected to the side wall opposite to the end cover and the motor housing, and the motor housing is connected to a mounting base by an adjustment structure.

[0008] As a further improvement of the present technical solution: the adjustment structure includes two connecting plates, the two connecting plates are fixedly connected to the side walls of the motor housing, a round rod is fixedly connected to the side wall between the two protrusions of the mounting base, the two connecting plates are rotatably connected to the round rod, the mounting base is provided with a movable groove, a movable plate is provided in the movable groove, and the movable plate is provided with two grooves, the side walls of the two grooves are rotatably connected with hinged rods through round rods, one end of the two hinged rods is connected with U-shaped blocks through round rods, and the two U-shaped blocks are respectively fixedly connected to the bottom side walls of the two connecting plates, a threaded rod is threadedly connected to the mounting base, one end of the threaded rod passes through the side wall of the mounting base and is rotatably connected to the side wall of the movable plate, and a limiting rod is slidably connected to the mounting base, and the limiting rod passes through the side wall of the mounting base and is fixedly connected to the side wall of the movable plate.

[0009] As a further improvement of the present technical solution: the end cover is provided with an axial hole which is arranged through, the longitudinal section of the axial hole is convex, a sealing bearing is arranged in one end of the axial hole, and a sealing sleeve is arranged at the other end of the axial hole, and the longitudinal section of the sealing sleeve is convex.

[0010] As a further improvement of the technical solution: the sealing sleeve is fixedly connected to the end cover by bolts.

[0011] As a further improvement of the technical solution: a plurality of grooves for heat dissipation are provided on the motor housing, and the plurality of grooves are arranged in a ring shape.

[0012] As a further improvement of the technical solution: a plurality of through holes are provided on the mounting base.

[0013] As a further improvement of the technical solution: the shape and size of the annular sealing block are matched with the shape and size of the first annular groove.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. Through the cooperation of the second annular groove, the glue channel and the channel plug, the sealing glue can be injected into the second annular groove, and the gaps between the motor housing and the end cover are filled with glue, and the first layer of sealing effect is achieved after the glue solidifies;

[0016] 2. The first annular groove, the annular sealing strip and the annular sealing block cooperate with each other to achieve a second layer of sealing effect;

[0017] 3. Through the cooperation of the connecting plate, U-shaped block, hinged rod, movable groove, mounting base, threaded rod, movable plate and limit rod, the angle between the motor housing and the mounting base can be adjusted, so that the motor housing can be installed at a certain angle.

[0018] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiment of the utility model with the accompanying drawings. The specific implementation method of the utility model is given in detail by the following embodiments and their drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0020] Figure 1 A side cross-sectional structural schematic diagram of a sealing structure of a three-phase synchronous motor housing proposed by the utility model;

[0021] Figure 2 It is a front view and cross-sectional structure schematic diagram of a sealing structure of a three-phase synchronous motor housing proposed by the utility model;

[0022] Figure 3 A schematic diagram of a top view and cross-sectional structure of a mounting base of a sealing structure of a three-phase synchronous motor housing proposed by the utility model;

[0023] Figure 4 for Figure 1 A is a magnified view of the local structure of the middle part;

[0024] Figure 5 The utility model provides a three-dimensional structural schematic diagram of a motor housing with a sealing structure for a three-phase synchronous motor housing.

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 1. Motor housing; 2. End cover; 3. First annular groove; 4. Annular sealing strip; 5. Annular sealing block; 6. Second annular groove; 7. Glue channel; 8. Channel plug; 9. Sealed bearing; 10. Shaft hole; 11. Sealing sleeve; 12. Connecting plate; 13. U-shaped block; 14. Articulated rod; 15. Movable groove; 16. Mounting base; 17. Threaded rod; 18. Movable plate; 19. Limit rod. DETAILED DESCRIPTION

[0027] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer according to the following description and claims. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0028] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0030] See also Figure 1-5 In an embodiment of the utility model, a sealing structure of a three-phase synchronous motor housing includes a motor housing 1, a first annular groove 3 and a second annular groove 6 are provided on the motor housing 1, the first annular groove 3 is located on the inner side of the second annular groove 6, an annular sealing strip 4 is fixedly connected to the inner side wall of the first annular groove 3, a glue channel 7 is provided on the side wall of the motor housing 1, the glue channel 7 runs through the side wall between the motor housing 1 and the second annular groove 6, a channel plug 8 is provided at one end of the glue channel 7, the motor housing 1 is connected to an end cover 2 by bolts, an annular sealing block 5 is fixedly connected to the side wall opposite to the end cover 2 and the motor housing 1, and the motor housing 1 is connected to a mounting base 16 through an adjustment structure.

[0031] See also Figure 1-5 The adjustment structure includes two connecting plates 12, the two connecting plates 12 are fixedly connected to the side wall of the motor housing 1, a round rod is fixedly connected to the side wall between the two protrusions of the mounting base 16, the two connecting plates 12 are rotatably connected to the round rod, a movable groove 15 is provided on the mounting base 16, a movable plate 18 is provided in the movable groove 15, and two grooves are provided on the movable plate 18, and the side walls of the two grooves are rotatably connected to the articulated rods 14 through the round rods, one end of the two articulated rods 14 is connected to the U-shaped blocks 13 through the round rods, and the two U-shaped blocks 13 are respectively fixedly connected to the two connecting plates 12 On the bottom side wall, a threaded rod 17 is threadedly connected to the mounting base 16, one end of the threaded rod 17 passes through the side wall of the mounting base 16 and is rotatably connected to the side wall of the movable plate 18, and a limiting rod 19 is slidably connected to the mounting base 16, and the limiting rod 19 passes through the side wall of the mounting base 16 and is fixedly connected to the side wall of the movable plate 18, so as to change the distance between the movable plate 18 and the round rod installed on the mounting base 16, thereby changing the angle between the connecting plate 12 and the mounting base 16, and then changing the installation angle of the motor housing 1, and the hinged rod 14 plays a supporting role.

[0032] See also Figure 1-5 A through-going shaft hole 10 is provided on the end cover 2, and the longitudinal section of the shaft hole 10 is convex. A sealing bearing 9 is provided in one end of the shaft hole 10, and a sealing sleeve 11 is provided at the other end of the shaft hole 10. The longitudinal section of the sealing sleeve 11 is convex. The motor shaft passes through the shaft hole 10, the sealing bearing 9 and the sealing sleeve 11. The sealing bearing 9 has a certain sealing effect, and the sealing sleeve 11 re-seals the motor shaft and the end cover 2 to improve the sealing effect of the motor.

[0033] See also Figure 1-5 The sealing sleeve 11 is fixedly connected to the end cover 2 by bolts, which facilitates the installation and later disassembly of the sealing sleeve 11.

[0034] See also Figure 1-5 The motor housing 1 is provided with a plurality of grooves for heat dissipation, and the plurality of grooves are arranged in a ring shape. When the motor is running, a large amount of heat is generated, and the heat needs to be volatilized. Excessive heat will affect the use of the motor.

[0035] See also Figure 1-5 The mounting base 16 is provided with a plurality of through holes, so as to facilitate the mounting base 16 to be installed at a designated position.

[0036] See also Figure 1-5 The shape and size of the annular sealing block 5 are matched with the shape and size of the first annular groove 3 and are the same in size, which can reduce the infiltration of gas or liquid and improve the sealing effect.

[0037] The working principle of the utility model is as follows: the annular sealing block 5 is inserted into the first annular groove 3, and the end cover 2 is fixed to the motor housing 1 by bolts. As the bolts rotate, the annular sealing block 5 exerts a heavier force on the annular sealing strip 4, which plays a first sealing effect. Then, glue for sealing is injected into the second annular groove 6 through the glue channel 7, and the glue fills the second annular groove 6 and also fills the gap where the motor housing 1 and the end cover 2 contact with each other, which plays a second sealing effect. The motor shaft passes through the shaft hole 10, the sealing bearing 9 and the sealing sleeve 1 1, the sealed bearing 9 has a certain sealing effect, and the sealing sleeve 11 re-seals the motor shaft and the end cover 2 to improve the sealing effect of the motor, and then rotates the threaded rod 17 clockwise and counterclockwise, and the threaded rod 17 moves to the left or right, which can cause the movable plate 18 to move to the left and right, and change the distance between the movable plate 18 and the round rod installed on the mounting base 16, thereby changing the angle between the connecting plate 12 and the mounting base 16, and then changing the installation angle of the motor housing 1, and the hinged rod 14 plays a supporting role.

[0038] The above description is only a preferred embodiment of the utility model and does not impose any form of limitation on the utility model. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. A sealing structure for a three-phase synchronous motor housing, comprising a motor housing (1), characterized in that: The motor housing (1) is provided with a first annular groove (3) and a second annular groove (6), the first annular groove (3) being located on the inner side of the second annular groove (6), an annular sealing strip (4) being fixedly connected to the inner side wall of the first annular groove (3), a glue channel (7) being provided on the side wall of the motor housing (1), the glue channel (7) penetrating the side wall between the motor housing (1) and the second annular groove (6), a channel plug (8) being provided at one end of the glue channel (7), the motor housing (1) being connected with an end cover (2) by bolts, an annular sealing block (5) being fixedly connected to the side wall of the end cover (2) opposite to the motor housing (1), and the motor housing (1) being connected with a mounting base (16) by an adjustment structure.

2. The sealing structure of a three-phase synchronous motor housing according to claim 1, characterized in that: The adjustment structure comprises two connecting plates (12), the two connecting plates (12) are fixedly connected to the side wall of the motor housing (1), a round rod is fixedly connected to the side wall between the two protruding parts of the mounting base (16), the two connecting plates (12) are rotatably connected to the round rod, a movable groove (15) is provided on the mounting base (16), a movable plate (18) is provided in the movable groove (15), the movable plate (18) is provided with two grooves, the side walls of the two grooves are rotatably connected to the hinge rod (14) through the round rod, and the two hinge rods (14) are connected to the side walls of the two grooves. 4) is connected to a U-shaped block (13) at one end through a round rod, the two U-shaped blocks (13) are respectively fixedly connected to the bottom side walls of the two connecting plates (12), a threaded rod (17) is threadedly connected to the mounting base (16), one end of the threaded rod (17) passes through the side wall of the mounting base (16) and is rotatably connected to the side wall of the movable plate (18), and a limiting rod (19) is slidably connected to the mounting base (16), and the limiting rod (19) passes through the side wall of the mounting base (16) and is fixedly connected to the side wall of the movable plate (18).

3. The sealing structure of a three-phase synchronous motor housing according to claim 2, characterized in that: The end cover (2) is provided with an axial hole (10) which is arranged through the end cover, and the longitudinal section of the axial hole (10) is convex. A sealing bearing (9) is arranged in one end of the axial hole (10), and a sealing sleeve (11) is arranged at the other end of the axial hole (10), and the longitudinal section of the sealing sleeve (11) is convex.

4. The sealing structure of a three-phase synchronous motor housing according to claim 3, characterized in that: The sealing sleeve (11) is fixedly connected to the end cover (2) by means of bolts.

5. The sealing structure of a three-phase synchronous motor housing according to claim 4, characterized in that: The motor housing (1) is provided with a plurality of grooves for heat dissipation, and the plurality of grooves are arranged in a ring shape.

6. The sealing structure of the three-phase synchronous motor housing according to claim 5, characterized in that: The mounting base (16) is provided with a plurality of through holes.

7. The sealing structure of the housing of a three-phase synchronous motor according to claim 6, characterized in that: The shape and size of the annular sealing block (5) are matched to the shape and size of the first annular groove (3).

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