CN217904117U - Motor and syllogic insulating motor shaft thereof - Google Patents

Abstract

The utility model relates to a motor and syllogic insulating motor shaft thereof, including front end support section, main part interlude and rear end support section, all be equipped with the bulge loop on the lateral wall of front end support section and rear end support section, one side of the bulge loop on front end support section and the rear end support section is fixed with the both ends of main part interlude respectively, and just two bulge loops offset with the both ends terminal surface of main part interlude respectively, front end support section and rear end support section are insulating material. The utility model discloses a design the syllogic with the motor shaft for the both ends of motor shaft can adopt insulating material, and then has destroyed the return circuit between casing (ground connection 0 potential) and motor shaft (high potential), makes absolutely insulating between the potential difference, thereby avoids producing the electric discharge phenomenon, has reached the epaxial bearing of protection motor promptly, avoids the effect of electrocorrosion, improves the holistic life of motor.

Description

Motor and syllogic insulating motor shaft thereof

Technical Field

The utility model relates to the technical field of electric motor, more specifically say so, relate to a motor and syllogic insulating motor shaft thereof.

Background

When the motor normally runs, a motor shaft can form a high potential, the shell is generally provided with ground protection, so a discharge phenomenon can be generated between the motor shaft and the shell, the bearing is a main part for connecting the shell and the motor shaft, the quality of the bearing influences the overall efficiency of the motor, various indexes such as noise and the like, and shaft current generated between the motor shaft and the shell can corrode the bearing, so that the bearing is easily damaged, and the overall performance of the motor is further influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the above technical problems, a first object of the present invention is to provide a three-stage insulated motor shaft, which can prevent the generation of shaft current, thereby protecting the bearing; a second object of the present invention is to provide a motor using the above motor shaft.

In order to realize the purpose of the first utility model, the utility model adopts the following technical scheme:

the utility model provides a syllogic insulating motor shaft, includes that front end supports section, main part interlude and rear end and supports the section, all be equipped with the bulge loop on the lateral wall of front end support section and rear end support section, one side of the bulge loop on front end support section and the rear end support section is fixed with the both ends of main part interlude respectively, and two bulge loops offset with the both ends terminal surface of main part interlude respectively, front end support section and rear end support section are insulating material.

As a preferable scheme: the front end supporting section, the middle section of the main body and the rear end supporting section are bonded by high-strength glue, and the bonding strength is greater than 180Mpa.

As a preferable scheme: the both ends of main part interlude all are equipped with the blind hole, the tip that front end supported section and rear end supported the section inserts corresponding blind hole respectively in, and makes front end support section, main part interlude and rear end support section interference connection.

As a preferable scheme: the interference between the front end supporting section and the middle section of the main body is 0.03mm-0.18mm.

As a preferable scheme: the one end of main part interlude still is equipped with and is used for carrying on spacing protruding edge to rotor core, bulge loop and protruding along the counterbalance on the front end support section.

As a preferable scheme: the front end supporting section and the rear end supporting section are respectively provided with an insulation resistance of more than 500M omega, hardness of more than HRC60, tensile strength of more than 400MPa and fracture elongation of more than 1.5%.

As a preferable scheme: the front end supporting section and the rear end supporting section are made of ceramics, asbestos, glass fibers or hard plastics.

In order to realize the purpose of the second utility model, the utility model adopts the following technical scheme:

the utility model provides a motor, includes stator, rotor and casing, the stator sets up at shells inner wall, the both ends of casing are fixed with front shroud and back shroud respectively, the both ends of rotor are connected its characterized in that through bearing A, bearing B and front shroud, back shroud rotation respectively: the rotor comprises a rotor iron core and the three-section type insulated motor shaft.

As a preferable scheme: the front cover plate and the rear cover plate are both provided with a convex ring plate on one side close to the inside of the shell, and the bearing A and the bearing B are respectively embedded in the convex ring plates.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a design into the syllogic with the motor shaft for the both ends of motor shaft can adopt insulating material, and then has destroyed the return circuit between casing (ground connection 0 potential) and motor shaft (high potential), makes absolute insulation between the potential difference, thereby avoids producing discharge phenomenon, has reached the epaxial bearing of protection motor promptly, avoids the effect of electrocorrosion, improves the holistic life of motor.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

Fig. 1 is a schematic sectional structure of the present invention;

FIG. 2 is a schematic view of the disassembled structure of the present invention;

fig. 3 is an exploded schematic view of the motor shaft of the present invention.

The reference signs are: 1. a front end support section; 11. a convex ring; 2. a body middle section; 21. a convex edge; 3. a rear end support section; 4. a housing; 5. a front cover plate; 6. a rear cover plate; 61. a collar plate; 7. a bearing A; 8. and a bearing B.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, elements, and/or combinations thereof, unless the context clearly indicates otherwise.

Furthermore, in the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The invention will be further explained with reference to the following embodiments and drawings:

the motor shown in fig. 1 and 2 comprises a stator, a rotor and a housing 4, wherein the stator is arranged on the inner wall of the housing 4, a front cover plate 5 and a rear cover plate 6 are respectively fixed at two ends of the housing 4, two ends of the rotor are respectively rotatably connected with the front cover plate 5 and the rear cover plate 6 through a bearing A7 and a bearing B8, and the rotor comprises a rotor iron core and a three-section type insulated motor shaft; front shroud 5 and back shroud 6 are close to the inside one side of casing 4 and all are equipped with protruding ring plate 61, bearing A7, bearing B8 inlay respectively and establish in protruding ring plate 61, and protruding ring plate 61 can play better limiting displacement to the bearing, stability when improving the motor operation.

As shown in fig. 3, a syllogic insulating motor shaft, includes that front end supports section 1, main part interlude 2 and rear end and supports section 3, all be equipped with bulge loop 11 on the lateral wall of front end support section 1 and rear end support section 3, one side of bulge loop 11 on front end support section 1 and the rear end support section 3 is fixed with the both ends of main part interlude 2 respectively, and just two bulge loops 11 offset with the both ends terminal surface of main part interlude 2 respectively, front end support section 1 and rear end support section 3 are insulating material.

The front end supports the mode that section 1, rear end support section 3 and main part interlude 2 between be connected and can adopt high strength glue to bond, also can adopt modes such as interference fit, when adopting interference fit, all sets up the blind hole at the both ends of main part interlude 2, the front end supports the tip that section 1 and rear end support section 3 and inserts corresponding blind hole respectively in, and makes the front end support section 1, main part interlude 2 and rear end support section 3 interference connection. The interference between the front end supporting section 1 and the main body middle section 2 is 0.03mm-0.18mm, and the interference between the main body middle section 2 and the rear end supporting section 3 is 0.03mm-0.18mm.

When the front end supporting section 1, the main body middle section 2 and the rear end supporting section 3 are bonded by high-strength glue, the bonding strength must be greater than 180Mpa. The requirement of the normal working of the motor shaft is met, and the motor shaft is prevented from being broken.

The one end of main part interlude 2 still is equipped with and is used for carrying on spacing protruding edge 21 to rotor core, bulge loop 11 on the front end support section 1 offsets with protruding edge 21.

The front end supporting section 1 and the rear end supporting section 3 are respectively provided with insulation resistance of more than 500M omega, hardness of more than HRC60, tensile strength of more than 400MPa and fracture elongation of more than 1.5%. Therefore, the front end supporting section 1 and the rear end supporting section 3 can be made of ceramic, asbestos, glass fiber or hard plastic.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments without departing from the spirit and scope of the present invention, and that any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention still fall within the technical scope of the present invention.

Claims (9)

1. The utility model provides a syllogic insulating motor shaft which characterized in that: support section (1), main part interlude (2) and rear end including the front end and support section (3), all be equipped with bulge loop (11) on the lateral wall of front end support section (1) and rear end support section (3), one side of bulge loop (11) on front end support section (1) and rear end support section (3) is fixed with the both ends of main part interlude (2) respectively, and two bulge loops (11) offset with the both ends terminal surface of main part interlude (2) respectively, front end support section (1) and rear end support section (3) are insulating material.

2. The insulated motor shaft of claim 1, wherein: the front end supporting section (1), the main body middle section (2) and the rear end supporting section (3) are bonded by high-strength glue, and the bonding strength is greater than 180Mpa.

3. The machine shaft of claim 1, wherein: the both ends of main part interlude (2) all are equipped with the blind hole, the front end supports the tip that section (1) and rear end supported section (3) and inserts respectively in the corresponding blind hole, and makes the front end support section (1), main part interlude (2) and rear end support section (3) interference connection.

4. The machine shaft of claim 3, wherein: the interference between the front end supporting section (1) and the middle section (2) of the main body, and the interference between the middle section (2) of the main body and the rear end supporting section (3) are respectively 0.03mm to 0.18mm.

5. The machine shaft of claim 1, wherein: one end of the middle section (2) of the main body is also provided with a convex edge (21) used for limiting the rotor core, and a convex ring (11) on the front end supporting section (1) is abutted against the convex edge (21).

6. The insulated motor shaft of claim 1, wherein: the front end supporting section (1) and the rear end supporting section (3) are respectively provided with an insulation resistance of more than 500M omega, a hardness of more than HRC60, a tensile strength of more than 400MPa and a fracture elongation of more than 1.5%.

7. The machine shaft of claim 1, wherein: the front end supporting section (1) and the rear end supporting section (3) are made of ceramics, asbestos, glass fibers or hard plastics.

8. The utility model provides a motor, includes stator, rotor and casing (4), the stator sets up at casing (4) inner wall, the both ends of casing (4) are fixed with front shroud (5) and back shroud (6) respectively, the both ends of rotor are connected its characterized in that through bearing A (7), bearing B (8) and front shroud (5), back shroud (6) rotation respectively: the rotor includes a rotor core and a three-segment insulated motor shaft according to any one of claims 1 to 7.

9. An electric machine as claimed in claim 8, characterized in that: front shroud (5) and back shroud (6) all are equipped with bulge loop board (61) near the inside one side of casing (4), inlay respectively in bulge loop board (61) bearing A (7), bearing B (8).

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