Lateral excitation motor driving structure

Abstract

The utility model provides a lateral excitation motor driving structure. The lateral excitation motor driving structure comprises a rotor; the stator comprises a stator winding and a stator iron core, a winding part for winding the stator winding is formed on the stator winding, conduction parts which extend towards one side and are arranged side by side are formed at the two ends of the winding part, and a first cavity for accommodating the rotor is defined between the two conduction parts; and the two end covers are oppositely arranged and are fixedly installed on the two sides of the stator iron core respectively to seal the two ends of the first cavity, and the two end covers are provided with hole sites respectively, and the rotating shaft extends out of the hole sites and is rotationally connected into the hole sites. Compared with a traditional cylindrical structure, the square structural steel is convenient to install and can be installed in a machine shell of a driven device, the motor of the square structure can make full use of the internal space of the machine shell of the driven device, the assembling performance is better, and the overall size of equipment can be compact and small.

Description

Technical Field

[0001] The utility model relates to the technical field of electric motors, in particular to a motor drive structure with lateral excitation. Background Art

[0002] An electric motor is a device that converts electrical energy into kinetic energy based on the law of electromagnetic induction. Its main function is to generate driving torque.

[0003] Commonly used electric motors usually include a casing, a stator, and a rotor. The stator is installed behind the casing and forms a space for installing the rotor along the axial direction. The two ends of the rotor are rotatably connected to the end covers at both ends of the casing through bearings. After voltage is applied to the stator and the rotor, the excitation winding of the stator generates a main magnetic field, and the rotor continuously converts the current direction through brushes and commutators, so that the rotor rotates continuously, thereby outputting torque.

[0004] In a conventional motor, the stator is formed by winding an excitation coil on two or more semicircular or arc-shaped armatures, and the stator is installed in a housing. Therefore, the motor is usually cylindrical in structure, and as the number of excitation coils increases, its diameter gradually increases. However, cylindrical motors are often inconvenient when used in some specific occasions. For example, after the motor is connected to the driven device, since the motor is a cylindrical structure, it is not convenient to set up a housing together with the driven device. It can only be achieved by covering the motor in the outer shell of the driven device, and the internal space of the driven device housing cannot be reasonably utilized, which invisibly increases the overall structure of the equipment and wastes space resources.

[0005] Therefore, there is an urgent need for a motor with optimized structure. Utility Model Content

[0006] The utility model aims to provide a motor drive structure with lateral excitation, which can optimize the overall structure of the motor, facilitate installation with other components or save space resources.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] A side-excitation motor drive structure includes:

[0009] A rotor, the rotor comprising a rotor core and a rotor winding wound around the rotor core, and a rotating shaft passing through the axis of the rotor core and extending from both ends thereof;

[0010] A stator, the stator comprising

[0011] a stator winding, the stator winding is used to generate an excitation magnetic field,

[0012] A stator core, wherein the stator core is formed with a winding portion for winding the stator winding, and both ends of the winding portion are formed with conducting portions extending toward one side and arranged side by side with each other, and a first chamber for accommodating the rotor is defined between the two conducting portions;

[0013] The end covers are two mutually opposed end covers, which are respectively fixedly mounted on both sides of the stator core to close the two ends of the first chamber, and the two end covers are respectively provided with holes for the rotating shaft to extend out and be rotatably connected therein.

[0014] Furthermore, a second chamber located between the first chamber and the winding portion is defined between the two conducting portions, and the second chamber is used to accommodate a portion of the stator winding.

[0015] Furthermore, one end of the two conducting parts away from the winding part is an open structure, so that the first chamber has a lateral opening.

[0016] Furthermore, the inner surface of the first chamber is configured as an arc surface adapted to the rotor, so that the opening is a retracted structure.

[0017] Furthermore, a partition part for separating the first chamber and the second chamber from each other is formed on the two conducting parts.

[0018] Furthermore, the spacing portion includes spacing protrusions respectively formed on the two conducting portions, and the two spacing protrusions are spaced from each other so that the first chamber and the second chamber are connected to each other.

[0019] Furthermore, the stator winding includes at least one group of coils.

[0020] The beneficial effects produced by the utility model are as follows:

[0021] The embodiment of the utility model provides a motor drive structure with side excitation, by arranging a first chamber, a second chamber and a winding portion which are arranged side by side on the stator core, so that after the rotor is installed on the stator through the end cover, the rotor and the stator winding are arranged side by side, that is, the excitation mode of the motor is optimized from surrounding the rotor to the side of the rotor. At this time, the overall structure of the motor is changed to a roughly square structure. Compared with the traditional cylindrical structure, the square structural steel is convenient for installation and can be installed in the casing of the driven device. The square-structured motor can make full use of the internal space of the casing of the driven device, has better assemblability, and can make the overall size of the device compact and small. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1This is a schematic diagram of the transmission connection between the motor drive structure provided by the utility model and the external stirring device.

[0023] Figure 2 It is a structural schematic diagram of the utility model.

[0024] Figure 3 It is a schematic diagram of the explosion structure of the utility model.

[0025] Figure 4 It is a structural schematic diagram of the stator core in the utility model.

[0026] In the figure: 100, rotor; 101, rotor core; 102, rotor winding; 103, rotating shaft; 104, commutator; 200, stator; 210, stator core; 211, first chamber; 212, winding part; 201, stator winding; 202, end cover; 203, hole; 213, second chamber; 214, conducting part; 215, spacing protrusion; 216, spacing space; 217, opening; 001, motor drive structure provided by the utility model; 002, stirring device. DETAILED DESCRIPTION

[0027] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with the embodiments and drawings, and the contents mentioned in the implementation modes are not intended to limit the present invention. The present invention is described in detail below in conjunction with the drawings.

[0028] like Figure 1-4 As shown, the embodiment of the utility model provides a side-excitation motor drive structure. In simple terms, the stator winding 201 is arranged on the side of the rotor 100. After the current is applied, the magnetic force generated by the stator winding 201 is transmitted to the rotor winding 102 under the conduction of the stator core 210. The power supply provides current to the rotor 100 through the commutator 104 and the brush, so that the rotor 100 rotates to output torque. In this embodiment, the traditional structure and shape of the motor are changed by designing the stator core 210 and the stator winding 201, thereby optimizing the structure and shape of the motor, and changing the motor from a transmission cylindrical shape to a square structure, so that when the motor is connected to the external device for transmission, it can adapt to the installation space of the external device and save space resources. In this embodiment, the motor drive structure 001 provided by the technical solution is connected to the stirring device 002, such as Figure 1As shown, the motor 001 provided by the present technical solution can be installed together with the stirring device 002 in the casing of the stirring device 002, and because the motor 001 of the present technical solution is a square structure, it is more convenient to install than the cylindrical structure, and can effectively utilize the internal space of the casing of the stirring device 002, so it is convenient to install it together with the stirring device 002 inside the casing of the stirring device 002.

[0029] In this embodiment, if Figure 2-4 As shown, a side-excitation motor drive structure 001 provided by the technical solution includes a rotor 100, a stator 200 and an end cover 202, wherein the rotor 100 includes a rotor core 101 and a rotor winding 102 wound on the rotor core 101, and the rotor core 101 is provided with a rotating shaft 103 along the axis, and the two ends of the rotating shaft 103 extend along the axis to the two ends of the rotor core 101, and the commutator 104 is arranged on the rotating shaft 103, and is used to cooperate with the brush to transmit current to the rotor winding 102; the stator 200 includes a stator core 210 and a stator winding 201 wound on the stator core 210, as shown Figure 2-4 As shown, the stator core 210 is formed with a winding portion 212 for winding the stator winding 201 thereon, and conductive portions 214 extending toward one side and arranged side by side are formed along the two ends of the winding portion 212. A first chamber 211 for accommodating the rotor 100 is defined between the two conductive portions 214. Two end covers 202 opposite to each other are respectively fixedly mounted on both sides of the stator core 210 to close the two ends of the first chamber 211. Holes 203 for the rotating shaft 103 of the rotor 100 to extend out and be rotatably connected therein are respectively opened on the two end covers 202. It can be imagined that the rotor 100 is rotatably connected in the hole 203 of the end cover 202 through a bearing.

[0030] Through the above structure, the rotor 100 is arranged in the first chamber 211, and the stator winding 201 is wound on the winding part 201 located on one side of the first chamber 211, so that the stator winding 201 and the rotor 100 of the motor are arranged side by side with each other, so that the excitation magnetic field of the motor is located on one side of the motor. By changing the position of the excitation magnetic field, the structure of the motor can be optimized to a square structure. Compared with the traditional cylindrical structure, the square structure can more effectively utilize space and is more convenient to install. After being connected to the external stirring device 002 by transmission, it can be installed in the casing of the stirring device 002 together with the stirring device 002. The square motor has more installation methods and can be used in a variety of installation occasions.

[0031] During the operation of the motor, the stator winding 201 and the rotor winding 102 are connected in series or in parallel through brushes and the commutator 104 to form a series-excited or shunt-excited motor. Similarly, it can also be set as a separately excited motor or a compound-excited motor. When the power supply is passed into the stator winding 201 for excitation, the excitation magnetic field generated by the stator 200 is located beside the rotor winding 102, and the excitation magnetic field is conducted through the conduction part, so that the conduction part also has a stable excitation magnetic field. After the power supply provides current to the rotor 100 through the commutator 104 and the brush, an armature magnetic field is also generated on the rotor winding 102. The current direction is continuously changed through the cooperation of the commutator 104 and the brush, so that the armature magnetic field on the rotor winding 102 continuously changes direction, and then under the interaction of the excitation magnetic field and the armature magnetic field with different directions, the rotor 100 is driven to rotate and output torque. A side-excitation motor drive structure provided in this embodiment can change the position of the motor's excitation by setting the position of the stator core 210 and the stator winding 201, that is, the excitation magnetic field is set on the side parallel to the rotor 100, thereby changing the overall shape of the motor from a traditional cylindrical shape to a square structure to meet the requirement of being installed in the casing at the same time as the stirring device 002. Since the structure of the motor is optimized to a square structure, the motor can utilize the internal space of the stirring device 002 or other device frames, with higher space utilization, making the product more compact.

[0032] In this embodiment, a second chamber 213 located between the first chamber 211 and the winding portion 212 is further defined between the two conducting portions 214. When the winding 202 is wound on the winding portion 201, a portion of one side of the stator winding 201 is located exactly within the second chamber 213, so that the stator winding 201 and the rotor 100 are located in two spaces respectively, thereby reducing mutual interference, improving the safety performance of the motor, and making the structure more reasonable.

[0033] like Figure 4The stator core 210 structure provided in the embodiment of the utility model is composed of two conducting parts 214 arranged side by side and a winding part 212 connecting the two conducting parts 214. The overall structure is a square structure. During the production process of the core 210, the two conducting parts 214 and the winding part 201 are an integrated structure, which can be formed by stacking multiple layers of "U"-shaped silicon steel sheets. By arranging the stator core 210 in this way, after the electronic winding is wound on the winding part 201, the magnetic force generated by the excitation magnetic field is conducted along the conducting part 214. At this time, there is also a stable magnetic field on the conducting part 214, which can make the rotor 100 rotate and transmit torque when current is passed through the rotor 100. It can be understood that although the magnetic force generated by the rotor winding 102 is attenuated after being conducted through the conducting part 214, at this time, it can be improved by changing the connection method between the rotor winding 102 and the stator winding 201, or by changing the number of turns of the stator winding 201. In the present embodiment, the stator winding 201 is provided with two groups of coils. Similarly, the stator winding 201 can also be provided with three, four or more groups of coils.

[0034] In this embodiment, the free ends of the two conducting parts 214, that is, the ends away from the winding part 212, are set to an open structure, so that the first chamber 211 has a lateral opening 217. During the operation of the motor, due to the open structure of the stator core 210, the heat dissipation performance of the rotor 100 during operation can be improved, and the temperature during the working process can be reduced. At the same time, the inner surfaces of the two conducting parts 214 are set to arc-shaped curved surfaces, that is, the upper and lower inner surfaces of the first chamber 211 are arc-shaped curved surfaces. By setting the inner surface of the first chamber 211 to an arc-shaped curved surface, it can adapt to the rotation of the rotor 100. More importantly, the rate of magnetic force conduction by the conducting part 214 is increased, and the attenuation of the excitation magnetic field of the stator winding 201 after conduction along the conducting part is reduced. At the same time, the opening of the first chamber is a retracted structure, so that the rotor has higher safety performance during rotation.

[0035] In a further technical solution, a partition is formed on the conducting portion 214 to isolate the first chamber 211 and the second chamber 213 from each other, so that after the rotor 100 and the stator winding 201 are assembled on the stator core 210, the rotor 100 and the stator winding 201 are in independent spaces, and can be independent of each other and do not interfere with each other during operation, thereby improving the safety performance of the motor operation. Figure 4As shown, the spacing portion includes spacing protrusions 215 respectively formed on the two conducting portions 214, and the two spacing protrusions 215 are spaced apart from each other so that a spacing space 216 is formed between the two spacing protrusions 215, which can connect the first chamber 211 with the second chamber 213, so that during the operation of the motor, the second chamber 213 is connected to the outside through the spacing space 216, the first chamber 211 and the opening 217 of the first chamber, thereby adding a ventilation air path and improving the heat dissipation performance of the motor.

[0036] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model is disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content disclosed above without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiments according to the technology of the utility model, which does not depart from the content of the technical solution of the utility model, belongs to the scope of the technical solution of the utility model.

Claims

1. A side-excitation motor drive structure, characterized in that: Included are: A rotor, the rotor comprising a rotor core and a rotor winding wound around the rotor core, and a rotating shaft passing through the axis of the rotor core and extending from both ends thereof; A stator, the stator comprising a stator winding, the stator winding is used to generate an excitation magnetic field, A stator core, wherein the stator core is formed with a winding portion for winding the stator winding, and both ends of the winding portion are formed with conducting portions extending toward one side and arranged side by side with each other, and a first chamber for accommodating the rotor is defined between the two conducting portions; The end covers are two mutually opposed end covers, which are respectively fixedly mounted on both sides of the stator core to close the two ends of the first chamber, and the two end covers are respectively provided with holes for the rotating shaft to extend out and be rotatably connected therein.

2. A side-excitation motor drive structure according to claim 1, characterized in that: A second chamber located between the first chamber and the winding portion is defined between the two conducting portions, and the second chamber is used for accommodating a portion of the stator winding.

3. The side-excitation motor drive structure according to claim 1, characterized in that: One end of the two conducting parts away from the winding part is an open structure, so that the first chamber has a lateral opening.

4. The side-excitation motor drive structure according to claim 3, characterized in that: The inner surface of the first chamber is configured as an arc surface adapted to the rotor, so that the opening is a retracted structure.

5. The side-excitation motor drive structure according to claim 2, characterized in that: A partition part for separating the first chamber and the second chamber from each other is formed on the two conducting parts.

6. The side-excitation motor drive structure according to claim 5, characterized in that: The spacing portion includes spacing protrusions respectively formed on the two conducting portions, and the two spacing protrusions are spaced apart from each other so that the first chamber and the second chamber are connected to each other.

7. The side-excitation motor drive structure according to claim 1, characterized in that: The stator winding includes at least one set of coils.

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