Rotor core cooling device

Abstract

The utility model provides a rotor iron core cooling device, and belongs to the technical field of iron core cooling. The device comprises a clutch assembly, the clutch assembly comprises a first split body, a second split body and an elastic connecting piece, the first split body and the second split body extend in the axial direction of a center hole of a rotor iron core, part of the peripheral faces of the first split body and the second split body are configured to be matched with the inner wall of the center hole, and the first split body and the second split body are each provided with a cooling pipeline; two ends of the elastic connecting piece are respectively connected with the first split body and the second split body; the movable inserting piece comprises a main body part and a first reducing part, the maximum radial size of the first reducing part is larger than that of the main body part, and the movable inserting piece extends between the first split body and the second split body; and the driving part is used for driving the movable plug-in to move along the axial direction of the rotor iron core so as to enlarge the distance between the first split body and the second split body after the first reducing part extends into the space between the first split body and the second split body. The rotor core cooling device provided by the utility model can improve the cooling efficiency.

Description

Technical Field

[0001] This application relates to the field of iron core cooling technology, and in particular to a rotor iron core cooling device. Background Technology

[0002] The rotor core is an iron component with a central hole in the middle. Due to the material, the rotor core is not suitable for direct contact with cooling water, and air cooling has a slower cooling rate.

[0003] Therefore, in existing technologies, the rotor core is typically cooled by a cooling component with internal cooling pipes. To improve cooling uniformity, an insertable cooling component needs to be installed inside the center hole of the rotor core. The center hole of the rotor core is a circular hole with a large length-to-diameter ratio. To ensure that the cooling component can smoothly extend into the center hole of the rotor core, the size of the cooling component needs to be set slightly smaller than the size of the center hole. However, this approach results in a gap between the cooling component and the center hole, which affects cooling efficiency. Utility Model Content

[0004] One objective of this invention is to provide a rotor core cooling device that can improve cooling efficiency.

[0005] Another objective of this invention is to further ensure the cooling effect.

[0006] An embodiment of this utility model provides a rotor core cooling device, comprising:

[0007] The clutch assembly includes a first part, a second part, and an elastic connector. The first part and the second part both extend axially along the central hole of the rotor core. A portion of the outer peripheral surface of the first part and the second part is configured to match the inner wall of the central hole. The first part and the second part are both provided with cooling pipes, which are connected to a chiller. The two ends of the elastic connector are respectively connected to the first part and the second part.

[0008] A movable insert includes a main body and a first variable diameter part, wherein the maximum radial dimension of the first variable diameter part is greater than the maximum radial dimension of the main body, and the movable insert extends between the first split and the second split.

[0009] A driving component is used to drive the movable insert to move axially along the rotor core, so as to increase the distance between the first and second parts after the first variable diameter part extends between the first and second parts, so that the outer peripheral surfaces of the first and second parts fit against the inner wall surface of the central hole.

[0010] Optionally, when the first and second parts are attached together, they together form a through hole. The through hole includes a first circular hole portion, a second circular hole portion, and a third circular hole portion arranged sequentially. The radial dimension of the second circular hole portion is larger than the radial dimension of the third circular hole portion.

[0011] The main body is provided with a second variable diameter portion at one end away from the first variable diameter portion. The maximum radial dimension of the second variable diameter portion is greater than the radial dimension of the third circular hole portion. The first variable diameter portion, the second variable diameter portion and the third circular hole portion correspond to the first circular hole portion, the second circular hole portion and the third circular hole portion, respectively.

[0012] Optionally, the through hole is further provided with a limiting circular hole portion, and the outer peripheral surface of the movable plug is further provided with a limiting protrusion portion. The limiting protrusion portion cooperates with the limiting circular hole portion to limit the stroke of the movable plug.

[0013] Optionally, the first variable diameter portion and the limiting protrusion are assembled to the main body portion, and the second variable diameter portion is integrally manufactured with the main body portion.

[0014] Optionally, the through hole may further include a fourth circular hole portion connected to the third circular hole portion.

[0015] Optionally, both the first segment and the second segment include a first segment, a second segment and a third segment connected in sequence. The first segment is provided with a first circular hole and a limiting circular hole, the second segment is provided with a second circular hole, and the third segment is provided with a third circular hole and a fourth circular hole.

[0016] Optionally, the rotor core cooling device further includes a guide structure, which includes a guide groove and a guide block that can move radially relative to the guide groove along the rotor core. One of the first and second parts is fixedly connected to the guide block, and the other part has the guide groove.

[0017] Optionally, the guide structure is provided on both sides of the first and second parts in the radial direction.

[0018] Optionally, the first split and the second split are provided with a plurality of elastic connecting members arranged sequentially along the axial direction of the rotor core on both sides of the radial direction, and each elastic connecting member is parallel to the other.

[0019] Optionally, the rotor core cooling device further includes a mounting structure, which includes a fixed base and a mounting bracket that can float relative to the fixed base. The fixed base is used to mount the drive component, and the mounting bracket is used to connect the movable plug.

[0020] According to a first aspect of the present invention, the clutch assembly includes a first part and a second part connected by an elastic connector, and a movable plug is inserted between the first part and the second part. The movable plug includes a main body and a first variable diameter part. Therefore, when the driving component drives the movable plug to move along the axial direction of the rotor core, the first variable diameter part moves downward to open up the first part and the second part, so that the outer peripheral surfaces of the first part and the second part are tightly fitted with the inner wall of the central hole of the rotor core, thereby increasing the cooling area and effectively improving the cooling efficiency.

[0021] According to a second aspect of this utility model, by providing a first variable diameter section and a second variable diameter section at both ends of the main body, when the driving component drives the moving insert to move, both the first variable diameter section and the second variable diameter section can play a supporting role. The synchronous supporting of the upper and lower ends can ensure that the first split and the second split are stably and effectively moved away from each other, so that the first split and the second split are vertically close to the side wall of the center hole of the iron core rotor without tilting, thereby ensuring the cooling contact area and ensuring the cooling effect.

[0022] According to a third aspect of this utility model, a limiting protrusion is provided at the movable plug-in and a limiting circular hole is provided in the through hole. Therefore, the travel of the movable plug-in moving up and down can be effectively limited. This travel can be set according to the moving distance of the first split and the second split and the angle of the first variable diameter part, so as to ensure that when the limiting protrusion moves down to the bottom of the limiting circular hole, the first split and the second split move to the position that fits with the central hole.

[0023] Furthermore, a fourth circular hole is provided at the bottom of the through hole, which can accommodate a large movement stroke of the moving plug. When the moving plug moves down to the target position, it will not protrude from the first part, thereby protecting the moving plug and ensuring that the lower surface of the first part is a flat surface, so there is no need to provide a clearance hole for the moving plug to protrude. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a rotor core cooling device according to an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the assembly structure of the clutch assembly and the moving plug according to an embodiment of the present invention;

[0026] Figure 3 This is an exploded structural diagram of a clutch assembly and a moving plug according to an embodiment of the present invention.

[0027] Figure 4 This is a schematic diagram of the structure of the first component according to an embodiment of the present invention;

[0028] Figure 5This is a cross-sectional structural schematic diagram of a rotor core cooling device according to an embodiment of the present invention;

[0029] Figure label:

[0030] Rotor core cooling device 100, clutch assembly 10, first split 11, first segment 111, second segment 112, third segment 113, second split 12, guide groove 121, elastic connector 13, bolt 14, moving insert 20, main body 21, first variable diameter part 22, second variable diameter part 23, limiting protrusion 24, first round hole part 101, second round hole part 102, third round hole part 103, limiting round hole part 104, fourth round hole part 105, guide block 30, fixed seat 41, mounting bracket 42, spring 43. Detailed Implementation

[0031] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not the entire structure. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0032] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0033] Furthermore, to better illustrate this utility model, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this utility model can be implemented without certain specific details. In some instances, methods, means, components, and circuits well known to those skilled in the art have not been described in detail in order to highlight the spirit of this disclosure.

[0034] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article indicates that the preceding and following related objects have an "or" relationship.

[0035] In this embodiment of the invention, "multiple" refers to two or more. The descriptions of "first," "second," etc., appearing in this embodiment of the invention are for illustrative purposes and to distinguish the objects being described; they do not indicate any order and do not represent a specific limitation on the number of items in this embodiment of the invention, nor do they constitute any limitation on this embodiment of the invention.

[0036] Figure 1 This is a schematic diagram of the structure of a rotor core cooling device 100 according to an embodiment of the present invention. Figure 2 for Figure 1 An exploded view of the rotor core cooling device 100. (See diagram below.) Figure 1 As shown, in one embodiment, the rotor core cooling device 100 includes a clutch assembly 10, a moving insert 20, and a drive component. The clutch assembly 10 includes a first split 11, a second split 12, and an elastic connector 13. Both the first split 11 and the second split 12 extend axially along the central hole of the rotor core. A portion of the outer peripheral surface of the first split 11 and the second split 12 is configured to match the inner wall of the central hole. Both the first split 11 and the second split 12 are provided with cooling pipes, which are connected to a chiller. The two ends of the elastic connector 13 are respectively connected to the first split 11 and the second split 12. The elastic connector 13 can be a tension spring, a rubber component, or other elastic component, and is not limited herein. Figure 2 As shown, the movable insert 20 includes a main body 21 and a first variable diameter part 22. The maximum radial dimension of the first variable diameter part 22 is greater than the maximum radial dimension of the main body 21. The movable insert 20 extends between the first split body 11 and the second split body 12. A driving component is used to drive the movable insert 20 to move axially along the rotor core, thereby widening the distance between the first split body 11 and the second split body 12 after the first variable diameter part 22 extends between them, so that the outer peripheral surfaces of the first split body 11 and the second split body 12 fit against the inner wall surface of the central hole. The driving component can be a power component capable of outputting linear displacement, such as a cylinder or hydraulic cylinder, or a combination of a rotary motor and a transmission mechanism, as long as it can drive the movable insert 20 to move linearly; no limitation is imposed here.

[0037] In this embodiment, the clutch assembly 10 includes a first split 11 and a second split 12 connected by an elastic connector 13. A movable plug 20 is inserted between the first split 11 and the second split 12. The movable plug 20 includes a main body 21 and a first variable diameter part 22. Therefore, when the driving component drives the movable plug 20 to move along the axial direction of the rotor core, the first variable diameter part 22 moves downward and can open up the first split 11 and the second split 12, so that the outer peripheral surfaces of the first split 11 and the second split 12 are tightly fitted with the inner wall of the central hole of the rotor core, thereby increasing the cooling area and effectively improving the cooling efficiency.

[0038] Figure 4This is a schematic diagram of the structure of the first component 11 according to an embodiment of the present invention. In one embodiment, the first component 11 and the second component 12 together form a through hole when they are attached, such as... Figure 4 As shown, the through hole includes a first circular hole portion 101, a second circular hole portion 102, and a third circular hole portion 103 arranged sequentially. The radial dimension of the second circular hole portion 102 is larger than the radial dimension of the third circular hole portion 103. A second variable diameter portion 23 is provided at the end of the main body portion 21 away from the first variable diameter portion 22. The maximum radial dimension of the second variable diameter portion 23 is larger than the radial dimension of the third circular hole portion 103. The first variable diameter portion 22, the second variable diameter portion 23, and the second variable diameter portion 23 correspond to the first circular hole portion 101, the second circular hole portion 102, and the third circular hole portion 103, respectively. In this embodiment, the main body portion 21 is cylindrical, and both the first variable diameter portion 22 and the second variable diameter portion 23 are conical.

[0039] In this embodiment, by providing a first variable diameter section 22 and a second variable diameter section 23 at both ends of the main body 21, the first variable diameter section 22 and the second variable diameter section 23 can both play a supporting role when the driving component drives the moving plug 20 to move. The synchronous supporting of the upper and lower ends can ensure that the first split 11 and the second split 12 move away from each other smoothly and effectively, so that the first split 11 and the second split 12 approach the side wall of the center hole of the iron core rotor in a vertical state without tilting, thereby ensuring the cooling contact area and ensuring the cooling effect.

[0040] Figure 5 This is a cross-sectional view of a rotor core cooling device 100 according to an embodiment of the present invention. In a further embodiment, such as... Figure 4 As shown, the through hole also has a limiting circular hole portion 104, and the outer peripheral surface of the movable plug-in 20 is also provided with a limiting protrusion portion 24, such as... Figure 5 As shown, the limiting protrusion 24 mates with the limiting circular hole 104 to limit the travel of the moving insert 20. The through hole also includes a fourth circular hole 105 connected to the third circular hole 103. The first variable diameter portion 22 and the limiting protrusion 24 are assembled to the main body portion 21, and the second variable diameter portion 23 is integrally manufactured with the main body portion 21. Figure 3 As shown, the first segment 11 and the second segment 12 each include a first segment 111, a second segment 112 and a third segment 113 connected in sequence. The first segment 111 is provided with a first circular hole 101 and a limiting circular hole 104, the second segment 112 is provided with a second circular hole 102, and the third segment 113 is provided with a third circular hole 103 and a fourth circular hole 105.

[0041] In this embodiment, a limiting protrusion 24 is provided at the movable plug 20, and a limiting circular hole 104 is provided in the through hole. Therefore, the travel of the movable plug 20 moving up and down can be effectively limited. This travel can be set according to the moving distance of the first split 11 and the second split 12 and the angle of the first variable diameter part 22, so as to ensure that when the limiting protrusion 24 moves down to the bottom of the limiting circular hole 104, the first split 11 and the second split 12 move to the position that fits with the center hole.

[0042] Furthermore, a fourth circular hole 105 is provided at the bottom of the through hole, which can accommodate a large movement stroke of the movable plug 20. When the movable plug 20 moves down to the target position, it will not protrude outside the first split body 11, thereby protecting the movable plug 20 and ensuring that the lower surface of the first split body 11 is a flat surface, so there is no need to provide a clearance hole for the movable plug 20 to protrude.

[0043] In a further embodiment, such as Figure 2 As shown, the rotor core cooling device 100 also includes a guide structure, which includes a guide groove 121 and a guide block 30 that can move radially along the rotor core relative to the guide groove 121. One of the first part 11 and the second part 12 is fixedly connected to the guide block 30, and the other part has the guide groove 121. Here, the guide block 30 can be fixed at the first part 11 or the second part 12 by fasteners.

[0044] Furthermore, the first segment 11 and the second segment 12 are symmetrically arranged along a vertical plane, and guide structures are provided on both sides of the first segment 11 and the second segment 12 in the radial direction. Multiple elastic connecting members 13 are provided on both sides of the first segment 11 and the second segment 12 in the radial direction, arranged sequentially along the axial direction of the rotor core, and the elastic connecting members 13 are parallel to each other. In this embodiment, the elastic connecting member 13 is a tension spring, and bolts 14 are respectively provided at the first segment 11 and the second segment 12, with the hooks at both ends of the tension spring fitted onto the bolts 14.

[0045] In this embodiment, the straightness of the first part 11 and the second part 12 during movement can be ensured by setting a guide structure.

[0046] Furthermore, by symmetrically arranging the first part 11 and the second part 12, and symmetrically arranging the guide structure and the elastic connector 13, the straightness of the first part 11 during movement can be further guaranteed.

[0047] like Figure 5As shown, in one embodiment, the rotor core cooling device 100 further includes a mounting structure, which includes a fixed base 41 and a mounting bracket 42 that can float relative to the fixed base 41. For example, a spring 43 is provided between the mounting bracket 42 and the fixed base 41. The fixed base 41 is used to mount the drive component, and the mounting bracket 42 is used to connect the movable plug 20. When the drive component moves the mounting bracket 42 and the movable plug 20, the spring 43 can provide a buffering effect.

[0048] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A rotor core cooling device, characterized in that, include: The clutch assembly includes a first part, a second part, and an elastic connector. The first part and the second part both extend axially along the central hole of the rotor core. A portion of the outer peripheral surface of the first part and the second part is configured to match the inner wall of the central hole. The first part and the second part are both provided with cooling pipes, which are connected to a chiller. The two ends of the elastic connector are respectively connected to the first part and the second part. A movable insert includes a main body and a first variable diameter part, wherein the maximum radial dimension of the first variable diameter part is greater than the maximum radial dimension of the main body, and the movable insert extends between the first split and the second split. A driving component is used to drive the movable insert to move axially along the rotor core, so as to increase the distance between the first and second parts after the first variable diameter part extends between the first and second parts, so that the outer peripheral surfaces of the first and second parts fit against the inner wall surface of the central hole.

2. The rotor core cooling device according to claim 1, characterized in that, When the first and second parts are attached together, they together form a through hole. The through hole includes a first circular hole portion, a second circular hole portion, and a third circular hole portion arranged sequentially. The radial dimension of the second circular hole portion is larger than the radial dimension of the third circular hole portion. The main body is provided with a second variable diameter portion at one end away from the first variable diameter portion. The maximum radial dimension of the second variable diameter portion is greater than the radial dimension of the third circular hole portion. The first variable diameter portion, the second variable diameter portion and the third circular hole portion correspond to the first circular hole portion, the second circular hole portion and the third circular hole portion, respectively.

3. The rotor core cooling device according to claim 2, characterized in that, The through hole is also provided with a limiting circular hole, and the outer peripheral surface of the movable plug is also provided with a limiting protrusion. The limiting protrusion cooperates with the limiting circular hole to limit the stroke of the movable plug.

4. The rotor core cooling device according to claim 3, characterized in that, The first variable diameter portion and the limiting protrusion are assembled to the main body portion, and the second variable diameter portion is integrally manufactured with the main body portion.

5. The rotor core cooling device according to claim 3, characterized in that, The through hole also includes a fourth circular hole portion connected to the third circular hole portion.

6. The rotor core cooling device according to claim 5, characterized in that, Both the first segment and the second segment include a first segment, a second segment and a third segment connected in sequence. The first segment is provided with a first circular hole and a limiting circular hole, the second segment is provided with a second circular hole, and the third segment is provided with a third circular hole and a fourth circular hole.

7. The rotor core cooling device according to any one of claims 1-6, characterized in that, It also includes a guide structure, which includes a guide groove and a guide block that can move radially relative to the guide groove along the rotor core. One of the first split body and the second split body is fixedly connected to the guide block, and the other split body has the guide groove.

8. The rotor core cooling device according to claim 7, characterized in that, The guide structure is provided on both sides of the first and second parts in the radial direction.

9. The rotor core cooling device according to claim 7, characterized in that, The first and second parts are respectively provided with multiple elastic connecting members arranged sequentially along the axial direction of the rotor core on both sides of the radial direction, and each elastic connecting member is parallel to the other.

10. The rotor core cooling device according to claim 1, characterized in that, It also includes an installation structure, which includes a fixed base and a mounting bracket that can float relative to the fixed base. The fixed base is used to install the drive component, and the mounting bracket is used to connect the movable plug.

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