Motor set with hollow rotor

Abstract

A motor set having a hollow rotor. The utility model mainly solves the technical problems of complex structure, low strength, high material production cost, high failure rate, inconvenience in maintenance and the like in the prior art. According to the technical scheme, the motor is characterized in that the motor comprises a first motor, a second motor and a co-drive coupling device, the first motor is connected with the second motor through the co-drive coupling device, and a first hollow rotor in the first motor is fixedly connected with a second hollow rotor in the second motor through the co-drive coupling device to form a whole. The method is mainly applied to synchronous work of motor sets.

Description

Technical Field

[0001] The utility model relates to a motor, in particular to a motor group with a hollow rotor. Background Art

[0002] The existing dual motors are linked to drive two shafts together, usually using a sleeve connection method. Some sleeves have complex structures and many parts, which affect the strength of the sleeve. Some sleeves are made of special materials with high production costs, high failure rates, and inconvenient maintenance. When the motor is running at ultra-high power, the sleeve is easily damaged and slipped, affecting the long-term high-intensity operation of the motor. Summary of the invention

[0003] The purpose of the utility model is to provide a motor group with a hollow rotor to solve the problems raised in the above background technology.

[0004] The technical solution adopted by the utility model to solve its technical problems is as follows: the utility model includes a first motor, a second motor and a co-drive coupling device, wherein the first motor is connected to the second motor through the co-drive coupling device; the first motor includes: a first housing, a first stator and a first hollow rotor, wherein the first stator and the first hollow rotor are arranged in the first housing, wherein a cavity is hollowed out in the first hollow rotor, wherein the first hollow rotor includes a first rotor body and a first rotor assembly, wherein a first rotor body positioning groove is arranged on the first rotor body, wherein the first rotor assembly is provided with a first rotor assembly first positioning piece matched with the first rotor body positioning groove, wherein the first rotor body is provided with a first rotor body first positioning piece protruding outwardly, wherein the first rotor assembly is provided with a first rotor assembly second positioning piece protruding outwardly, wherein a first hollow rotor first positioning hole is arranged on the first hollow rotor, wherein the first hollow rotor first positioning hole is arranged in the first rotor body cavity, wherein the first hollow rotor first positioning hole is arranged outwardly through the first rotor body from the first rotor body cavity;

[0005] The second motor of the utility model comprises: a second housing, a second stator and a second hollow rotor, the second stator and the second hollow rotor are arranged in the second housing, the second hollow rotor is hollowed out to form a cavity, the second hollow rotor comprises a second rotor body and a second rotor assembly, the second rotor body is provided with a second rotor body positioning groove, the first rotor assembly is provided with a second rotor assembly first positioning piece matched with the second rotor body positioning groove, the second rotor body is provided with a second rotor body first positioning piece protruding outwardly, the second rotor assembly is provided with a second rotor assembly second positioning piece protruding outwardly, the second hollow rotor is provided with a second hollow rotor first positioning hole, the second hollow rotor first positioning hole is arranged in the second rotor body cavity, and the second hollow rotor first positioning hole is arranged outwardly through the second rotor body from the second rotor body cavity;

[0006] The co-drive coupling device of the utility model comprises: a first positioning hole of the co-drive coupling and a second positioning hole of the co-drive coupling, wherein two ends of the first positioning hole of the co-drive coupling are respectively connected to a first positioning piece of a first rotor body and a first positioning piece of a second rotor body, and two ends of the second positioning hole of the co-drive coupling are respectively connected to a first positioning hole of a first hollow rotor and a first positioning hole of a second hollow rotor.

[0007] The first motor or the second motor, the first motor and the second motor of the utility model include a rotating ring and a connecting plate. The rotating ring is fixed on the first hollow rotor and / or the second hollow rotor, the connecting plate is arranged on the circumferential side of the rotating ring, and the stator is fixedly arranged on the inner side of the first shell and / or the second shell. The first hollow rotor and / or the second hollow rotor are movably connected to the first shell and / or the second shell at both ends, so that the rotor rotates inside the shell.

[0008] The first rotor assembly of the utility model is provided with a first rotor assembly second positioning piece protruding outwardly, the first rotor assembly second positioning piece is matched with a first flywheel, and the first flywheel is provided with a groove or a through groove matched with the first rotor assembly second positioning piece for fixing and positioning.

[0009] The second rotor assembly of the utility model is provided with a second rotor assembly second positioning piece protruding outwardly, and the second flywheel is matched with the second rotor assembly second positioning piece. The second flywheel is provided with a groove or a through groove matched with the second rotor assembly second positioning piece for fixing and positioning.

[0010] The first hollow rotor first positioning hole or the second hollow rotor first positioning hole of the utility model is arranged in a ring shape on the first rotor body or the second rotor body, and the first flywheel or the second flywheel is provided with the same number of connecting holes corresponding to the first hollow rotor first positioning hole or the second hollow rotor first positioning hole for connection and fastening.

[0011] The utility model also includes a connecting sleeve, which connects the first shell and the second shell, and assists the co-drive coupling device to fix the two motors, so as to prevent the two motors from shifting and causing the centers of gravity to be not on the same axis, thereby causing the motors to shake.

[0012] The beneficial effect of the utility model is that the hollow rotors of the two motors are connected with the same-drive coupling device, which not only reduces the weight but also ensures that the hollow rotors of the two motors form a whole, so that the two motors can work together for a long time with high intensity, improve efficiency and reduce material loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 It is a schematic diagram of the first hollow rotor structure of the utility model;

[0015] Figure 3 It is a schematic diagram of the structure of the second hollow rotor of the utility model;

[0016] Figure 4 This is a structural schematic diagram of the co-drive coupling device of the utility model;

[0017] Figure 5 It is a schematic cross-sectional view of the structure of the co-drive coupling device of the utility model;

[0018] Figure 6 It is a schematic diagram of the connecting sleeve structure of the utility model;

[0019] Figure 7 It is a schematic cross-sectional view of the connecting sleeve structure of the utility model;

[0020] Figure 8 It is a schematic diagram of the connected flywheel structure of the utility model.

[0021] In the figure: 1-first motor, 2-second motor, 3-co-drive coupling device, 11-first housing, 12-first stator, 13-first hollow rotor, 131-first rotor body, 132-first rotor assembly, 133-first positioning hole of first hollow rotor, 134-cavity, 1311-first rotor body positioning groove, 1321-first rotor assembly first positioning piece, 1312-first rotor body first positioning piece, 1322-first rotor assembly second positioning piece, 21-second housing, 22-second stator Sub, 23-second hollow rotor, 231-second rotor body, 232-second rotor assembly, 233-second hollow rotor first positioning hole, 234-cavity, 2311-second rotor body positioning groove, 2321-second rotor assembly first positioning piece, 2312-second rotor body first positioning piece, 2322-second rotor assembly second positioning piece, 31-same-drive coupling first positioning hole, 32-same-drive coupling second positioning hole, 4-first flywheel, 42-first flywheel positioning hole, 41-first flywheel fixing hole. DETAILED DESCRIPTION

[0022] The utility model is further described in detail below with reference to the accompanying drawings and embodiments.

[0023] Example 1, see Figures 1 to 8The utility model discloses a motor group with a hollow rotor, which includes a first motor 1, a second motor 2 and a co-drive coupling device 3, wherein the first motor 1 is connected to the second motor 2 through the co-drive coupling device 3; the first motor 1 includes: a first housing 11, a first stator 12 and a first hollow rotor 13, wherein the first stator 12 and the first hollow rotor 13 are arranged in the first housing 11, wherein a cavity 134 is hollowed out in the first hollow rotor 13, wherein the first hollow rotor 13 includes a first rotor body 131 and a first rotor assembly 132, wherein the first rotor body 131 is provided with a 1311, wherein the first rotor The assembly 132 is provided with a first rotor assembly first positioning piece 1321 matched with the first rotor body positioning groove 1311, the first rotor body 131 is provided with a first rotor body first positioning piece 1312 protruding outwardly, the first rotor assembly 132 is provided with a first rotor assembly second positioning piece 1322 protruding outwardly, the first hollow rotor 13 is provided with a first hollow rotor first positioning hole 133, the first hollow rotor first positioning hole 133 is arranged in the cavity of the first rotor body 131, and the first hollow rotor first positioning hole 133 is arranged outwardly from the cavity of the first rotor body 131 through the first rotor body 131;

[0024] The second motor 2 includes: a second housing 21, a second stator 22 and a second hollow rotor 23, the second stator 22 and the second hollow rotor 23 are arranged in the second housing 21, a cavity 234 is hollowed out in the second hollow rotor 23, the second hollow rotor 23 includes a second rotor body 231 and a second rotor assembly 232, the second rotor body 231 is provided with a second rotor body positioning groove 2311, the first rotor assembly 232 is provided with a second rotor assembly first positioning piece 2321 matched with the second rotor body positioning groove 2311, the second rotor body 231 is provided with a second rotor body first positioning piece 2312 protruding outwardly, the second rotor assembly 232 is provided with a second rotor assembly second positioning piece 2322 protruding outwardly, the second hollow rotor 23 is provided with a second hollow rotor first positioning hole 233, the second hollow rotor first positioning hole 233 is arranged in the cavity of the second rotor body 231, and the second hollow rotor first positioning hole 233 is arranged outwardly from the cavity of the second rotor body 231 through the second rotor body 231;

[0025] The co-drive coupling device 3 includes: a first co-drive coupling positioning hole 31 and a second co-drive coupling positioning hole 32, wherein the two ends of the first co-drive coupling positioning hole 31 are respectively connected to the first rotor body first positioning piece 1312 and the second rotor body first positioning piece 2312, and the two ends of the second co-drive coupling positioning hole 32 are respectively connected to the first hollow rotor first positioning hole 133 and the second hollow rotor first positioning hole 233.

[0026] Example 2, see Figures 1 to 8 The utility model discloses a motor group with a hollow rotor, wherein the first motor 1 is provided with 8 first hollow rotor first positioning holes 133 arranged in a ring along the axis of the first hollow rotor, the second motor 2 is provided with 8 second hollow rotor first positioning holes 233 arranged in a ring along the axis of the second hollow rotor, the same-drive coupling device 3 is provided with 8 same-drive coupling second positioning holes 32 arranged in a ring along the axis of the same-drive coupling device 3, the same-drive coupling second positioning holes 32 are through holes, connecting the two ends of the same-drive coupling device 3, the first hollow rotor first positioning hole 133 corresponds to the same-drive coupling second positioning hole 32, the second hollow rotor first positioning hole 233 corresponds to the same-drive coupling second positioning hole 32, and similarly, the first hollow rotor The first positioning hole 133 of the sub-hollow rotor corresponds to the first positioning hole 233 of the second hollow rotor; 8 bolts are passed through the cavity 134 of the first motor 1 to pass through the first positioning hole 133 of the first hollow rotor and fastened with the second positioning hole 32 of the same-drive coupling, and the first positioning hole 133 of the first hollow rotor and the second positioning hole 32 of the same-drive coupling are both provided with internal threads; 8 bolts are passed through the cavity 234 of the second motor 2 to pass through the first positioning hole 233 of the second hollow rotor and fastened with the second positioning hole 32 of the same-drive coupling, and the second positioning hole 233 of the second hollow rotor and the second positioning hole 32 of the same-drive coupling are both provided with internal threads, so that the first motor 1, the second motor 2 and the same-drive coupling device 3 are connected as a whole; the rest is the same as any other embodiment of the utility model or a combination of more than two embodiments.

[0027] Example 3, see Figures 1 to 8 The utility model discloses a motor group with a hollow rotor, wherein the first motor 1 is provided with a first rotor body first positioning member 1312 with a protruding disc shape along the axis, the co-drive coupling device 3 is provided with a through hole co-drive coupling first positioning hole 31 along the axis, and the second motor 2 is provided with a second rotor body first positioning member 2312 with a protruding disc shape along the axis, the first rotor body first positioning member 1312 is connected to the co-drive coupling first positioning hole 31 and extends into the co-drive coupling first positioning hole 31, and the second rotor body first positioning member 2312 is connected to the co-drive coupling first positioning hole 31 and extends into the co-drive coupling first positioning hole 31; the rest is the same as any other embodiment of the utility model or a combination of more than two embodiments.

[0028] Example 4, see Figures 1 to 8 The utility model discloses a motor unit with a hollow rotor, and a flat keyway is also provided on the rotor body to prevent the rotor body 11 from being eccentric due to unbalanced force; the rest is the same as any other embodiment of the utility model or a combination of more than two embodiments.

[0029] Example 5, see Figures 1 to 8 The utility model discloses a motor group with a hollow rotor, wherein the first rotor body 131 is provided with 8 first hollow rotor second positioning holes 1313 arranged in an annular manner along the axis of the first hollow rotor, and the distance between the first hollow rotor second positioning hole 1313 and the axis of the first hollow rotor is greater than the radius of the first rotor body positioning groove 1311; the dual motor with the same drive structure also includes a first flywheel 4, the first flywheel 4 is provided with a first flywheel positioning hole 42 and a first flywheel fixing hole 41, and the first flywheel 4 is connected to the first rotor assembly through the first flywheel positioning hole 42 The second positioning piece 1322 of the first rotor assembly on 132 is positioned and connected, the first flywheel fixing hole 41 corresponds to the first hollow rotor second positioning hole 1313, and 8 bolts are set to connect the first flywheel fixing hole 41 and the first hollow rotor second positioning hole 1313. The bolts are fixed to the first flywheel fixing hole 41 through the first hollow rotor second positioning hole 1313, and the first flywheel 4 and the first motor 1 are firmly fixed together to form a whole, so that the first flywheel 4 and the first hollow rotor 13 rotate together; the rest is the same as any other embodiment of the utility model or a combination of more than two embodiments.

[0030] Example 6, see Figures 1 to 8 The utility model discloses a motor group with a hollow rotor, wherein the second rotor body 231 is provided with 8 second hollow rotor second positioning holes 2313 arranged in an annular manner along the axis of the second hollow rotor, and the distance between the second hollow rotor second positioning holes 2313 and the axis of the second hollow rotor is greater than the radius of the second rotor body positioning groove 2311; the dual motor with the same drive structure also includes a second flywheel, the second flywheel is provided with a second flywheel positioning hole and a second flywheel fixing hole, and the second flywheel is connected to the second rotor assembly 2 through the second flywheel positioning hole The second rotor assembly second positioning piece 2322 on 32 is positioned and connected, the second flywheel fixing hole corresponds to the second hollow rotor second positioning hole 2313, 8 bolts are set to connect the second flywheel fixing hole and the second hollow rotor second positioning hole 2313, the bolts are fixed to the second flywheel fixing hole through the second hollow rotor second positioning hole 2313, the second flywheel and the second motor 2 are firmly fixed together to form a whole, so that the second flywheel and the second hollow rotor 23 rotate together; the rest are the same as any other embodiment of the utility model or a combination of more than two embodiments.

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and does not serve as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0032] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0033] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0034] Unless otherwise specified, the relative arrangement of the components and steps described in these embodiments, the numerical expressions and numerical values ​​do not limit the scope of the present application. At the same time, it should be understood that for ease of description, the structures, proportions, sizes, etc. shown in the drawings are only used to match the contents disclosed in the specification, so that people familiar with this technology can understand and read, and are not used to limit the limiting conditions that can be implemented in this application. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that can be produced by this application and the purpose that can be achieved, should still fall within the scope that the technical content disclosed in this application can cover. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, not as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in the subsequent drawings.

[0035] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0036] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0037] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

Claims

1. A motor unit with a hollow rotor, characterized in that: It comprises a first motor, a second motor and a co-drive coupling device, wherein the first motor is connected to the second motor through the co-drive coupling device; The first motor comprises: a first housing, a first stator and a first hollow rotor, wherein the first stator and the first hollow rotor are arranged in the first housing, a cavity is hollowed out in the first hollow rotor, the first hollow rotor comprises a first rotor body and a first rotor assembly, the first rotor body is provided with a first rotor body positioning groove, the first rotor assembly is provided with a first rotor assembly first positioning piece matched with the first rotor body positioning groove, the first rotor body is provided with a first rotor body first positioning piece protruding outwardly, the first hollow rotor is provided with a first hollow rotor first positioning hole, the first hollow rotor first positioning hole is arranged in the first rotor body cavity, and the first hollow rotor first positioning hole is arranged outwardly through the first rotor body from the first rotor body cavity; The second motor comprises: a second housing, a second stator and a second hollow rotor, the second stator and the second hollow rotor are arranged in the second housing, the second hollow rotor is hollowed out to form a cavity, the second hollow rotor comprises a second rotor body and a second rotor assembly, the second rotor body is provided with a second rotor body positioning groove, the first rotor assembly is provided with a second rotor assembly first positioning piece matched with the second rotor body positioning groove, the second rotor body is provided with a second rotor body first positioning piece protruding outwardly, the second hollow rotor is provided with a second hollow rotor first positioning hole, the second hollow rotor first positioning hole is arranged in the second rotor body cavity, and the second hollow rotor first positioning hole is arranged outwardly through the second rotor body from the second rotor body cavity; The co-drive coupling device comprises: a first co-drive coupling positioning hole and a second co-drive coupling positioning hole, wherein two ends of the first co-drive coupling positioning hole are respectively connected to a first positioning piece of a first rotor body and a first positioning piece of a second rotor body, and two ends of the second co-drive coupling positioning hole are respectively connected to a first positioning hole of a first hollow rotor and a first positioning hole of a second hollow rotor.

2. The motor unit with a hollow rotor according to claim 1, characterized in that: The first motor or the second motor comprises a rotating ring and a connecting plate. The rotating ring is fixed on the first hollow rotor or the second hollow rotor. The connecting plate is arranged on the circumference of the rotating ring. The stator is fixedly arranged on the inner side of the first shell or the second shell.

3. The motor unit with a hollow rotor according to claim 1 or 2, characterized in that: The first rotor assembly is provided with a first rotor assembly second positioning member protruding outwardly, and the first flywheel is matchedly arranged on the first rotor assembly second positioning member.

4. The motor unit with a hollow rotor according to claim 1 or 2, characterized in that: The second rotor assembly is provided with a second rotor assembly second positioning piece protruding outwardly, and the second flywheel is matched with the second rotor assembly second positioning piece.

5. The motor unit with a hollow rotor according to claim 1 or 2, characterized in that: The first hollow rotor first positioning hole or the second hollow rotor first positioning hole is arranged in a ring shape on the first rotor body or the second rotor body.

6. The motor unit with a hollow rotor according to claim 1 or 2, characterized in that: The dual motor with a hollow rotor further includes a connecting sleeve connecting the first housing and the second housing.

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