Motor with rotor cage structure

Abstract

The utility model provides a motor with a rotor cage structure, and belongs to the technical field of motors. The rotor cage solves the problem that a rotor cage in the prior art is not easy to disassemble or assemble. The motor comprises a motor shell, a motor stator, a stator winding, a rotor cage and a motor rotor, the motor stator is installed inside the motor shell, the stator winding is installed inside the motor stator, the rotor cage comprises two cage body covers and a plurality of conducting bars, and the cage body covers are of a horizontally symmetrical structure. A plurality of rectangular plates in a circumferential array are formed on the cage body cover, the thickness of the end part of the inner side of each rectangular plate is greater than that of the end part of the outer side of each rectangular plate, a plurality of connecting columns are mounted on the cage body cover, the connecting columns and the rectangular plates are distributed at intervals, and the connecting columns penetrate through the cage body cover and are fixedly connected with one ends of the guide bars; and the conducting bars are connected with the rotor slots. The utility model has the advantage that the rotor cage is convenient to disassemble or assemble.

Description

Technical Field

[0001] This utility model belongs to the field of motor technology and relates to a motor with a rotor cage structure. Background Technology

[0002] The main function of a three-phase AC motor is to convert electrical energy into mechanical energy to drive various equipment and machinery. A three-phase AC motor is powered by three-phase AC electricity, which generates a rotating magnetic field, thereby driving the rotor to rotate and achieving energy conversion.

[0003] Chinese Patent No. CN204906142U discloses a rotor squirrel cage, a rotor, and a motor, including a first end ring and a second end ring arranged opposite to each other, a plurality of axial guide bars disposed between the first end ring and the second end ring, a plurality of first radial guide bars, one end of which is connected to the first end ring and the other end extends radially outward along the first end ring and is connected to one end of the plurality of axial guide bars; and a plurality of second radial guide bars, one end of which is connected to the second end ring and the other end extends radially outward along the second end ring and is connected to the other end of the plurality of axial guide bars.

[0004] The patent provides a rotor squirrel cage, rotor, and motor in which the first and second end rings at the ends of the rotor squirrel cage are flat structures without any contact structures. This results in the operator having no leverage point during installation or disassembly, making it inconvenient to disassemble or install. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in the prior art by providing a motor with a rotor cage structure.

[0006] The objective of this utility model can be achieved through the following technical solution: A motor with a rotor cage structure includes a motor housing, a motor stator, a stator winding, a rotor cage, and a motor rotor. The motor stator is installed inside the motor housing, and the stator winding is installed inside the motor stator. The rotor cage includes a cage cover and several guide bars. There are two cage covers in a horizontally symmetrical structure. Several rectangular plates arranged in a circular array are formed on the cage cover. The thickness of the inner end of the rectangular plate is greater than the thickness of the outer end of the rectangular plate. Several connecting posts are installed on the cage cover. The connecting posts are spaced apart from the rectangular plates. The connecting posts pass through the cage cover and are fixedly connected to one end of the guide bars. Rotor slots are formed in the motor rotor, and the guide bars are connected to the rotor slots.

[0007] In the above-mentioned motor with a rotor cage structure, the inner end face of the cage cover is fitted and fixed to the outer end face of the motor rotor.

[0008] In the aforementioned motor with a rotor cage structure, the guide bars are arranged in an oblique structure, and the rotor slots are also arranged in the same oblique structure.

[0009] In the above-mentioned motor with a rotor cage structure, a motor end cover is fixedly installed on one side of the motor housing, and a motor shaft is connected inside the motor rotor, with the motor shaft passing through and extending out of the motor end cover.

[0010] Compared with the prior art, the motor with a rotor cage structure provided by this utility model has the following beneficial effects: by setting several rectangular plates on the cage cover of the rotor cage, the rectangular plates can: 1. be gripped when installing or disassembling the rotor cage and the motor rotor, which is convenient for installation or disassembly; 2. the structural setting that the thickness of the inner end of the rectangular plate is greater than the thickness of the outer end can help improve the magnetic field symmetry inside the motor and reduce magnetic field distortion. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0013] Figure 3 This is a schematic diagram of the rotor cage structure;

[0014] Figure 4 This is a schematic diagram of the motor rotor structure.

[0015] In the diagram: 1. Motor housing; 2. Motor stator; 3. Stator winding; 4. Rotor cage; 41. Cage cover; 42. Guide bar; 43. Rectangular plate; 44. Connecting column; 5. Motor rotor; 51. Rotor slot; 6. Motor end cover; 7. Motor shaft. Detailed Implementation

[0016] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0017] like Figures 1 to 4As shown, this embodiment includes a motor housing 1, a motor stator 2, a stator winding 3, a rotor cage 4, a motor rotor 5, a motor end cover 6, and a motor shaft. The motor stator 2 is installed inside the motor housing 1, the stator winding 3 is installed inside the motor stator 2, and the rotor cage 4 and motor rotor 5 are installed inside the motor stator 2. The rotor cage 4 includes two cage covers 41 and several guide bars 42. The two cage covers 41 are arranged in a horizontally symmetrical structure. Several rectangular plates 43 arranged in a circumferential array are welded and fixed to the cage covers 41. The rectangular plates 43 are fixed in a vertical direction, and the thickness of the inner end of the rectangular plate 43 is greater than that of the outer end of the rectangular plate 43. The thickness of the structure facilitates the gripping of the cage cover 41 by a person, and the structure can help improve the symmetry of the magnetic field inside the motor and reduce magnetic field distortion. Several connecting posts 44 are installed on the cage cover 41, and the connecting posts 44 are distributed at intervals with the rectangular plate 43. The connecting posts 44 pass through the cage cover 41 and are fixedly connected to one end of the guide bar 42. The connecting posts 44 connect the cage cover 41 and the guide bar 42. A rotor slot 51 is formed in the motor rotor 5, and the guide bar 42 is connected to the rotor slot 51. The motor end cover 6 is fixedly installed on one side of the motor housing 1. The motor shaft is connected to the inside of the motor rotor 5, and the motor shaft passes through and extends out of the motor end cover 6.

[0018] Specifically, the connecting column 44 is a rotatable structure, and the cage cover 41 and guide bar 42 can be disassembled and assembled by rotating the connecting column 44.

[0019] To elaborate further, such as Figures 1 to 4 As shown, the inner end face of the cage cover 41 is fitted and fixed to the outer end face of the motor rotor 5. The cage cover 41 provides effective axial support for the motor rotor 5, reducing the overall vibration and noise of this embodiment.

[0020] To elaborate further, such as Figures 1 to 4 As shown, the guide bar 42 is arranged in an oblique structure, and the rotor slot 51 is also arranged in the same oblique structure. This structure reduces the electromagnetic force fluctuation caused by sudden changes in local magnetic field.

[0021] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0022] Although this document uses a variety of terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. A motor with a rotor cage structure, comprising a motor housing (1), a motor stator (2), stator windings (3), a rotor cage (4), and a motor rotor (5), wherein the motor stator (2) is installed inside the motor housing (1), and the stator windings (3) are installed inside the motor stator (2), characterized in that: The rotor cage (4) includes a cage cover (41) and several guide bars (42). There are two cage covers (41) in a horizontally symmetrical structure. Several rectangular plates (43) in a circular array are formed on the cage cover (41). The thickness of the inner end of the rectangular plate (43) is greater than the thickness of the outer end of the rectangular plate (43). Several connecting posts (44) are installed on the cage cover (41). The connecting posts (44) are spaced apart from the rectangular plates (43). The connecting posts (44) pass through the cage cover (41) and are fixedly connected to one end of the guide bars (42). A rotor slot (51) is formed in the motor rotor (5). The guide bars (42) are connected to the rotor slot (51).

2. The motor with a rotor cage structure according to claim 1, characterized in that: The inner end face of the cage cover (41) is fixed to the outer end face of the motor rotor (5).

3. The motor with a rotor cage structure according to claim 1, characterized in that: The guide bar (42) is arranged in an oblique structure, and the rotor groove (51) is also arranged in the same oblique structure.

4. A motor with a rotor cage structure according to claim 1, characterized in that: A motor end cover (6) is fixedly installed on one side of the motor housing (1), and a motor shaft is connected inside the motor rotor (5). The motor shaft passes through and extends out of the motor end cover (6).

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