Housing for annular motor, annular motor and mill

Abstract

The utility model provides a housing for an annular motor, which is configured to be annular and is provided with a radial outer wall, a radial inner wall, a first side wall and a second side wall, the radial outer wall and the radial inner wall extend along the circumferential direction, the first side wall and the second side wall are connected with the radial outer wall and the radial inner wall, and an inner cavity is defined by the radial outer wall, the radial inner wall, the first side wall and the second side wall; wherein at least one axial reinforcing plate extending in the axial direction is arranged in the inner cavity, and the edge, facing the radial inner wall, of the at least one axial reinforcing plate comprises a notch. According to the utility model, even if the stator assembly is subjected to paint dipping operation, as the notches are additionally arranged on the axial reinforcing plates, paint can be allowed to flow away from the notches, so that the residual paint in the shell after paint dipping is reduced, the usage amount of the paint is reduced, the production cost is reduced, and unexpected weight increase is also avoided. The utility model further provides an annular motor which comprises the shell for the annular motor. The utility model further provides a mill which comprises the annular motor.

Description

Technical Field

[0001] The utility model relates to a shell for a ring-shaped motor, a ring-shaped motor and a grinder. Background Art

[0002] When in use, a mill requires an electric motor to drive the mill barrel. A traditional mill drive system consists of a drive motor, a reduction gear, a pinion shaft, and a large gear. During operation, the drive motor drives the reduction gear, which in turn drives the pinion shaft, which in turn drives the large gear, which in turn drives the mill barrel to rotate and achieve grinding. This drive system involves numerous transmission links, each of which consumes energy, machinery, lubrication, and space. This results in low energy utilization and transmission efficiency for the entire drive system, significantly increasing energy, machinery, and lubrication consumption.

[0003] As an improvement, ring motors exist that can directly drive the mill drum. However, the mounting structure between the housing, stator assembly, rotor assembly, and the mill drum driven by the rotor assembly in existing ring motors is not ideal. Especially for large, high-load equipment like mills, the frame or annular plate used to mount the stator assembly in existing ring motors suffers from insufficient strength and poor stability. Furthermore, because the stator assembly typically requires a varnishing process, unwanted varnish often remains in the housing or frame where the stator assembly is mounted.

[0004] Therefore, an improved technical solution is desired in this field to solve the above problems. Utility Model Content

[0005] In response to the above problems, according to the first aspect of the present utility model, a casing for a ring-shaped motor is proposed, which is constructed in an annular shape and has a radial outer wall, a radial inner wall and a first side wall and a second side wall connected to the two along the circumferential direction, and the radial outer wall, the radial inner wall, the first side wall and the second side wall define an inner cavity; wherein, at least one axial reinforcing plate extending along the axial direction is arranged in the inner cavity, and the edge of the at least one axial reinforcing plate facing the radial inner wall includes a notch.

[0006] Preferably, the outer shell comprises at least one circumferential reinforcement plate circumferentially arranged in the inner cavity and located between the radial outer wall and the radial inner wall.

[0007] Preferably, the edge of the at least one circumferential reinforcing plate facing the radial inner wall has a notch.

[0008] Preferably, the at least one circumferential reinforcement plate comprises a first circumferential reinforcement plate and a second circumferential reinforcement plate that are axially spaced apart.

[0009] Preferably, the at least one axial reinforcement plate includes a first axial reinforcement plate located between the first side wall and the first circumferential reinforcement plate and at least one second axial reinforcement plate located between the second side wall and the second circumferential reinforcement plate.

[0010] Preferably, the outer shell includes a sealing plate arranged between the first circumferential reinforcement plate and the second circumferential reinforcement plate and separated from the radial inner wall, and the sealing plate has an arc shape extending circumferentially, so that the first circumferential reinforcement plate, the second circumferential reinforcement plate, the radial inner wall and the sealing plate form a cooling channel extending circumferentially and configured to be radially opposite to the stator assembly of the annular motor.

[0011] Preferably, the at least one axial reinforcement plate includes at least one intermediate reinforcement plate, which extends axially, is arranged between the first circumferential reinforcement plate and the second circumferential reinforcement plate, and is located radially outside the closing plate.

[0012] Preferably, the notch is configured to have: at least one notch; and / or a shape of a semicircle, a triangle, a trapezoid, or a rectangle.

[0013] Preferably, the housing comprises at least two sub-housings spliced together along the circumferential direction.

[0014] According to the utility model, even if the stator assembly is subjected to a paint dipping operation, the addition of recesses on the axial reinforcement plate allows the paint to flow away from the recesses, thereby reducing the amount of paint remaining in the outer shell after paint dipping, which not only reduces the amount of paint used, but also reduces production costs and avoids undesirable weight increase.

[0015] According to a second aspect of the present invention, a ring-shaped motor includes: a housing for a ring-shaped motor as described above; a stator assembly, mounted on the radial inner wall on the side opposite to the inner cavity; and a rotor assembly, mounted on the radial inner side of the stator assembly; wherein the rotor assembly has a mounting portion for fixing a driven part on the radial inner side of the rotor assembly.

[0016] According to a third aspect of the present invention, a grinding mill is proposed, comprising: the annular motor as described above; and a cylinder, which serves as the driven component and is fixedly connected to the rotor assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings of the embodiments of the present invention. The drawings are only used to illustrate some embodiments of the present invention, and are not intended to limit all embodiments of the present invention to these drawings.

[0018] Figure 1 2 is a view of a ring motor according to a preferred embodiment of the present invention.

[0019] Figure 2 FIG. 1 is a view of one of the sub-housings according to a preferred embodiment in which the housing is configured to be composed of four sub-housings.

[0020] Figure 3 for Figure 2 A partial enlarged view of the sub-housing shown.

[0021] Figure 4 for Figure 2 A partial cross-sectional view of the subhousing is shown.

[0022] Figure 5 Schematic diagram of the radial inner wall and the ribs thereon of the ring motor according to a preferred embodiment of the present utility model.

[0023] Figure 6 The figure is a schematic diagram showing that a circumferential reinforcement plate is added to the radial inner wall of the ring-shaped motor according to a preferred embodiment of the present utility model.

[0024] Figure 7 It is a partial cross-sectional view of the housing, stator assembly, and rotor assembly of a ring-shaped motor according to a preferred embodiment of the present utility model.

[0025] Figure 8 Schematic diagram of a mill according to a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the specific embodiments of the present invention. The same figure marks in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by persons of ordinary skill in the field to which the present invention belongs. The words "first", "second" and similar terms used in the specification and claims of the present utility model patent application do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0028] The present invention will be described in detail below by describing exemplary embodiments.

[0029] The utility model provides a shell for a ring-shaped motor, a ring-shaped motor and a grinder.

[0030] See attached Figure 1-3 , Figure 1 2 is a diagram of a ring motor according to a preferred embodiment of the present invention. Figure 2 FIG. 1 is a view of one of the sub-housings in a preferred embodiment in which the housing is configured to be composed of four sub-housings. Figure 3 for Figure 2 A partial enlarged view of the sub-housing shown.

[0031] Typically, the ring motor comprises: a housing 1, a stator assembly 2 mounted on the radial inner side of the housing 1, and a rotor assembly 3 mounted on the radial inner side of the stator assembly 2, wherein the rotor assembly 3 has a mounting portion 30 (e.g., Figure 7 As shown), the driven member is fixedly mounted on the radial inner side of the rotor assembly 3.

[0032] As shown in the figure, a housing 1 for a ring-shaped motor according to a preferred embodiment of the present invention is annular and has a circumferentially extending radial outer wall 13, a radial inner wall 10, and a first sidewall 11 and a second sidewall 12 connected thereto. The radial outer wall 13, the radial inner wall 10, the first sidewall 11, and the second sidewall 12 define an inner cavity 14. At least one axial reinforcement plate extending axially is disposed within the inner cavity 14, thereby providing support for the housing 1. It should also be understood that the at least one axial reinforcement plate can, for example, be supported between the first sidewall 11 and the second sidewall 112. The at least one axial reinforcement plate is also preferably welded to the four walls of the housing within the inner cavity.

[0033] Furthermore, the edge of the at least one axial reinforcement plate facing the radial inner wall 10 includes a notch 16. Since stator assemblies typically require a paint dip operation, adding the notch to the axial reinforcement plate allows paint to flow through the notch, thereby reducing paint residue in the housing after paint dip. This not only reduces paint usage, but also lowers production costs and avoids undesirable weight increases.

[0034] Preferably, the housing 1 may include at least two sub-housings spliced together along the circumferential direction. In the preferred embodiment shown in the drawings, the housing 1 is formed by four sub-housings, and each sub-housing has substantially the same structure.

[0035] In a preferred embodiment (not shown), housing 1 includes at least one circumferential reinforcement plate circumferentially disposed within inner cavity 14 and located between radially outer wall 13 and radially inner wall 10. The circumferential reinforcement plate provides strong radial support for housing 1 and is preferably welded to radially inner wall 10 and radially outer wall 13. Furthermore, the presence of both axial and circumferential reinforcement plates in housing 1 further increases the strength and stability of the housing.

[0036] Further preferably, an edge of the at least one circumferential reinforcing plate facing the radial inner wall 10 may also have a notch to facilitate the discharge of paint from the housing 1 .

[0037] More preferably, see the attached Figure 3-6 The at least one circumferential reinforcing plate includes a first circumferential reinforcing plate 51 and a second circumferential reinforcing plate 52, which are axially spaced apart. Furthermore, the at least one axial reinforcing plate includes a first axial reinforcing plate 61 located between the first sidewall 11 and the first circumferential reinforcing plate 51, and at least one second axial reinforcing plate 62 located between the second sidewall 12 and the second circumferential reinforcing plate 52. Since the sidewalls 11, 12 and the circumferential reinforcing plates 51, 52 are all components with a relatively long circumferential length, the provision of at least one axial reinforcing plate 61, 62 can provide favorable axial support for the sidewalls and circumferential reinforcing plates, thereby improving the strength and stability of the entire shell.

[0038] In order to provide heat dissipation function for the stator assembly 2, the housing 1 may include a sealing plate 40 arranged between the first circumferential reinforcement plate 51 and the second circumferential reinforcement plate 52 and spaced apart from the radial inner wall 10, and the sealing plate 40 has an arc shape extending along the circumferential direction, so that the first circumferential reinforcement plate 51, the second circumferential reinforcement plate 52, the radial inner wall 10 and the sealing plate 40 form a cooling channel 4 extending along the circumferential direction and configured to be radially opposite to the stator assembly 2 of the annular motor.

[0039] Any suitable coolant, such as water or oil, can flow through the cooling channel 4. Because the cooling channel 4 is located adjacent to and directly opposite the stator assembly 2, heat from the stator assembly 2 is directly transferred to the coolant within the cooling channel 4 via the radial inner wall 10, thereby achieving optimal cooling of the stator assembly 2. Furthermore, by forming the cooling channel 4 using a portion of the first circumferential reinforcement plate 51 and the second circumferential reinforcement plate 52, which are used to provide support for the housing 1, the cooling channel 4 is simplified in structure and facilitates installation.

[0040] Further preferably, the housing 1 may include at least one rib 45 disposed in the cooling channel 4 for guiding the flow of coolant. The at least one rib 45 divides the cooling channel 4 into multiple sub-channels. Preferably, the coolant flow directions in adjacent sub-channels can be opposite, that is, the fluid in the sub-channels flows along a winding path, which can greatly improve cooling efficiency and enhance the cooling effect. The rib 45 can be fixed in the cooling channel 4, for example, by welding. Because the stator assembly 2 mounted to the radial inner wall 10 is relatively heavy, the provision of the rib 45 can further increase the strength of the radial inner wall 10.

[0041] Further preferably, the at least one axial reinforcement plate includes at least one intermediate reinforcement plate 63, which extends axially, is disposed between the first circumferential reinforcement plate 51 and the second circumferential reinforcement plate 52, and is located radially outward of the sealing plate 40. Furthermore, the at least one intermediate reinforcement plate 63 can be welded to the sealing plate 40.

[0042] Therefore, as shown in the figure and as described above, the reinforcing plates 61, 62, and 63 each have a notch 16 to facilitate paint drainage. It should be understood that the notch 16 can be provided in any suitable number, such as at least one. The shape of the notch 16 can also be any suitable shape, such as a semicircular, triangular, trapezoidal, or rectangular.

[0043] The present invention also provides a ring-shaped motor, which includes the housing 1, the stator assembly 2 and the rotor assembly 3 as described above.

[0044] The utility model also provides a grinding machine, see Figure 8 The cylinder 8 is fixedly mounted on the radial inner side of the rotor assembly 3. For example, the cylinder 8 can be mounted on the mounting portion 30 by bolts. Although not shown, it should be understood that the cylinder 8 of the mill can be supported at its axial ends by structures consisting of necessary bearings, brackets, etc., so that the cylinder 8 and the rotor assembly 3 can rotate stably together.

[0045] The exemplary implementation of the ring motor proposed in the present invention is described in detail above with reference to the preferred embodiments. However, it can be understood by those skilled in the art that, without departing from the concept of the present invention, various variations and modifications can be made to the above-mentioned specific embodiments, and various technical features and structures proposed in the present invention can be combined in various ways without exceeding the scope of protection of the present invention.

Claims

1. A housing (1) for a ring motor, characterized in that: The housing (1) is configured in an annular shape and comprises a radial outer wall (13) extending in a circumferential direction, a radial inner wall (10), and a first side wall (11) and a second side wall (12) connected thereto, wherein the radial outer wall (13), the radial inner wall (10), the first side wall (11) and the second side wall (12) define an inner cavity (14); At least one axial reinforcement plate extending in the axial direction is arranged in the inner cavity (14), and an edge of the at least one axial reinforcement plate facing the radial inner wall (10) includes a notch (16).

2. The housing (1) for a ring motor according to claim 1, characterized in that The housing (1) comprises at least one circumferential reinforcement plate arranged circumferentially in the inner cavity (14) and located between the radial outer wall (13) and the radial inner wall (10).

3. The housing (1) for a ring motor according to claim 2, characterized in that The edge of the at least one circumferential reinforcement plate facing the radial inner wall (10) has a notch.

4. The housing (1) for a ring motor according to claim 2, characterized in that The at least one circumferential reinforcement plate includes a first circumferential reinforcement plate (51) and a second circumferential reinforcement plate (52) that are axially spaced apart.

5. The housing (1) for a ring motor according to claim 4, characterized in that The at least one axial reinforcement plate includes a first axial reinforcement plate (61) located between the first side wall (11) and the first circumferential reinforcement plate (51) and at least one second axial reinforcement plate (62) located between the second side wall (12) and the second circumferential reinforcement plate (52).

6. The housing (1) for a ring motor according to claim 5, characterized in that The housing (1) includes a sealing plate (40) arranged between a first circumferential reinforcing plate (51) and a second circumferential reinforcing plate (52) and spaced apart from the radial inner wall (10), wherein the sealing plate (40) has an arc shape extending in the circumferential direction, so that the first circumferential reinforcing plate (51), the second circumferential reinforcing plate (52), the radial inner wall (10) and the sealing plate (40) form a cooling channel (4) extending in the circumferential direction and configured to be radially opposite to the stator assembly (2) of the annular motor.

7. The housing (1) for a ring motor according to claim 6, characterized in that The at least one axial reinforcement plate includes at least one intermediate reinforcement plate (63), which extends axially, is arranged between the first circumferential reinforcement plate (51) and the second circumferential reinforcement plate (52), and is located radially outside the sealing plate (40).

8. A housing (1) for a ring motor according to any one of claims 1 to 7, characterized in that: The notch (16) is configured as follows: at least one; and / or The shape is semicircular, triangular, trapezoidal, or rectangular.

9. The housing (1) for a ring motor according to claim 1, characterized in that The housing (1) comprises at least two sub-housings spliced together along the circumferential direction.

10. A ring motor, characterized in that: include: A housing (1) for a ring motor according to any one of claims 1 to 9; a stator assembly (2) mounted on the radial inner wall (10) on a side opposite to the inner cavity (14); A rotor assembly (3) is mounted radially inward of the stator assembly (2); The rotor assembly (3) has a mounting portion for fixing a driven component on the radial inner side of the rotor assembly (3).

11. A grinding mill, characterized in that: include: The ring motor according to claim 10; A cylinder (8) is fixedly connected to the rotor assembly (3) as the driven component.

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