Housing for annular motor, annular motor and mill

Abstract

The utility model provides a housing used for an annular motor, the housing is in an annular shape and is provided with a radial outer wall and a radial inner wall which extend along the circumferential direction, and a first side wall and a second side wall which are connected with the radial outer wall and the radial inner wall, and the radial outer wall, the radial inner wall, the first side wall and the second side wall define an inner cavity. The reinforcing plate is arranged in the inner cavity so as to provide support for the shell. According to the utility model, the reinforcing plate is arranged in the inner cavity, so that a structural support with higher strength and better stability is provided for the stator assembly and even the whole annular motor. 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 plan, there is a ring motor that can directly drive the mill cylinder to rotate. However, the installation structure between the casing, stator assembly, rotor assembly and the mill cylinder driven by the rotor assembly of the existing ring motor is not ideal. Especially for large-volume and heavy-load equipment such as the mill, the frame or ring plate used to install the stator assembly of the existing ring motor faces problems such as insufficient strength and poor stability.

[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 extending in 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 a reinforcing plate is arranged in the inner cavity to provide support for the casing.

[0006] Preferably, the reinforcing plate includes a first circumferential reinforcing plate and a second circumferential reinforcing plate located between the radial outer wall and the radial inner wall and extending in the circumferential direction.

[0007] Preferably, the reinforcing plate includes at least one first axial reinforcing plate located between the first side wall and the first circumferential reinforcing plate and extending in the axial direction, and at least one second axial reinforcing plate located between the second side wall and the second circumferential reinforcing plate and extending in the axial direction.

[0008] 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.

[0009] Preferably, the reinforcing plate includes at least one intermediate reinforcing plate, which extends axially, is arranged between the first circumferential reinforcing plate and the second circumferential reinforcing plate and is located radially outside the sealing plate, and the at least one intermediate reinforcing plate is welded to the sealing plate.

[0010] Preferably, at least one rib is provided in the cooling channel for guiding the flow of coolant.

[0011] Preferably, the sealing plate includes: a plurality of sub-sealing plates, adjacent sub-sealing plates having gaps extending circumferentially therebetween, and the top of each of the at least one rib has a boss extending into the corresponding gap, thereby connecting the at least one rib to the plurality of sub-sealing plates by welding on both sides of the boss.

[0012] Preferably, the first circumferential reinforcement plate, the second circumferential reinforcement plate, the at least one first axial reinforcement plate and the at least one second axial reinforcement plate and / or the at least one intermediate reinforcement plate have weight-reducing holes.

[0013] Preferably, the radial outer wall has an access opening for accessing the inner cavity to allow access to the at least one rib. 10. The housing for a ring-shaped motor according to claim 1, wherein the reinforcing plate comprises at least one axial reinforcing plate extending in the axial direction, the at least one axial reinforcing plate having a weight-reducing hole, and / or the at least one axial reinforcing plate having an edge facing the radial inner wall having a notch.

[0014] Preferably, the housing comprises at least two sub-housings spliced ​​together along the circumferential direction.

[0015] Unlike existing techniques that use a simple frame or a single ring-shaped plate to mount the stator assembly, the present invention utilizes an annular housing with an inner cavity to mount the stator assembly. A reinforcing plate is provided within the inner cavity, providing a stronger and more stable structural support for the stator assembly and, ultimately, the entire ring-shaped motor. Therefore, the present ring-shaped motor is particularly suitable for machinery such as grinding mills that operate under heavy loads and harsh conditions.

[0016] 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.

[0017] 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

[0018] 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.

[0019] Figure 1 2 is a view of a ring motor according to a preferred embodiment of the present invention.

[0020] 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.

[0021] Figure 3 for Figure 2 A partial enlarged view of the sub-housing shown.

[0022] Figure 4 for Figure 2 A partial cross-sectional view of the subhousing is shown.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] Figure 8 Schematic diagram of a mill according to a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0027] 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.

[0028] 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.

[0029] The present invention will be described in detail below by describing exemplary embodiments.

[0030] The utility model provides a shell for a ring-shaped motor, a ring-shaped motor and a grinder.

[0031] 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.

[0032] 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.

[0033] As shown in the figure, according to a preferred embodiment of the present invention, a shell 1 for a ring motor is constructed in an annular shape and has a radial outer wall 13 extending in the circumferential direction, a radial inner wall 10, and a first side wall 11 and a second side wall 12 connected to the two, and 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; wherein, a reinforcement plate is arranged in the inner cavity 14 to provide support for the shell 1.

[0034] Unlike existing techniques that use a simple frame or a single ring-shaped plate to mount the stator assembly, the present invention utilizes an annular housing with an inner cavity to mount the stator assembly. A reinforcing plate is provided within the inner cavity, providing a stronger and more stable structural support for the stator assembly and, ultimately, the entire ring-shaped motor. Therefore, the present ring-shaped motor is particularly suitable for machinery such as grinding mills that operate under heavy loads and harsh conditions.

[0035] 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.

[0036] It should be understood that the reinforcement plate can have any suitable structure and form, as long as it provides structural support for the shell in a suitable orientation, and as needed, the reinforcement plate can be fixedly connected to each wall of the shell (for example, welded).

[0037] Preferably, see in particular Figure 4 and 6 The reinforcement plate may include a first circumferential reinforcement plate 51 and a second circumferential reinforcement plate 52 located between the radial outer wall 13 and the radial inner wall 10 and extending circumferentially, both of which can provide strong radial support for the shell 1.

[0038] Further preferably, the reinforcement plates may include at least one first axial reinforcement plate 61 located between the first sidewall 11 and the first circumferential reinforcement plate 51 and extending axially, and at least one second axial reinforcement plate 62 located between the second sidewall 12 and the second circumferential reinforcement plate 52 and extending axially. Since the sidewalls 11, 12 and the circumferential reinforcement plates 51, 52 are all components having a relatively long circumferential length, the provision of at least one axial reinforcement plate 61, 62 can provide favorable axial support for the sidewalls and circumferential reinforcement plates, thereby improving the strength and stability of the entire housing.

[0039] Further preferably, continue to see Figure 3-4The housing 1 may include a sealing plate 40 disposed between a first circumferential reinforcement plate 51 and a second circumferential reinforcement plate 52 and spaced apart from the radial inner wall 10. The sealing plate 40 has a circumferentially extending arcuate shape. Thus, 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 circumferentially and configured to radially oppose the stator assembly 2 of the annular motor. Any suitable coolant, such as water or oil, may flow through the cooling channel 4. Because the cooling channel 4 is 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 optimized cooling of the stator assembly 2.

[0040] Further preferably, the reinforcing plate may include at least one intermediate reinforcing plate 63, which extends axially, is arranged between the first circumferential reinforcing plate 51 and the second circumferential reinforcing plate 52 and is located radially outside the sealing plate 40, and the at least one intermediate reinforcing plate 63 is welded to the sealing plate 40.

[0041] 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.

[0042] Preferably, see Figure 4 and 7 The sealing plate 40 includes a plurality of sub-sealing plates, with gaps extending circumferentially between adjacent sub-sealing plates, and the top of each of the at least one rib 45 has a boss 47 extending into the corresponding gap, so that the at least one rib 45 is connected to the plurality of sub-sealing plates by welding on both sides of the boss 47. According to another embodiment not shown, the sealing plate can be a single sealing plate, that is, a whole annular plate with multiple gaps, and the ribs can have similar bosses and be installed in a manner similar to the above. Through this structure, the connection between the sealing plate and the ribs can be more conveniently achieved, and the sealing and strength of the welding connection between the sealing plate and the ribs are higher.

[0043] It is further preferred that the first circumferential reinforcement plate 51, the second circumferential reinforcement plate 52, the at least one first axial reinforcement plate 61 and the at least one second axial reinforcement plate 62 and / or the at least one intermediate reinforcement plate 63 have weight-reducing holes, thereby further reducing the overall weight of the housing 1 and thereby reducing the weight of the ring motor.

[0044] Preferably, the radial outer wall 13 has an access opening 130 for accessing the inner cavity 14 so as to be able to approach the at least one rib 45, see Figure 1 and Figure 3 Through the access opening 130 , operations such as installation and welding inside the housing can be easily performed.

[0045] According to a preferred embodiment not shown, in the absence of the circumferential reinforcement plates 51 and 52 as described above, the reinforcement plate may be at least one axial reinforcement plate extending in the axial direction, that is, such an axial reinforcement plate is directly supported between the first side wall 11 and the second side wall 12. Moreover, the at least one axial reinforcement plate may also have a weight-reducing hole.

[0046] It should be understood that the aforementioned axial reinforcement plates 61, 62 and the intermediate reinforcement plate 63 can all be regarded as axial reinforcement plates. Figure 7 The edge of the at least one axial reinforcement plate (including the axially extending plates 61, 62, and 63 as described above) facing the radial inner wall 10 has a notch 16. Since stator assemblies typically require a paint dip operation, adding a 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.

[0047] 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.

[0048] 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.

[0049] The exemplary implementation of the ring motor proposed in the present invention is described in detail above with reference to the preferred embodiments. However, those skilled in the art will understand that, without departing from the concept of the present invention, various modifications and variations 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); The reinforcing plate is arranged in the inner cavity (14) to provide support for the outer shell (1).

2. The housing (1) for a ring motor according to claim 1, characterized in that The reinforcing plate includes a first circumferential reinforcing plate (51) and a second circumferential reinforcing plate (52) which are located between the radial outer wall (13) and the radial inner wall (10) and extend in the circumferential direction.

3. The housing (1) for a ring motor according to claim 2, characterized in that The reinforcing plate includes at least one first axial reinforcing plate (61) located between the first side wall (11) and the first circumferential reinforcing plate (51) and extending in the axial direction, and at least one second axial reinforcing plate (62) located between the second side wall (12) and the second circumferential reinforcing plate (52) and extending in the axial direction.

4. The housing (1) for a ring motor according to claim 3, 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.

5. The housing (1) for a ring motor according to claim 4, characterized in that The reinforcing plate includes at least one intermediate reinforcing plate (63), which extends axially, is arranged between the first circumferential reinforcing plate (51) and the second circumferential reinforcing plate (52), and is located radially outside the sealing plate (40), and the at least one intermediate reinforcing plate (63) is welded to the sealing plate (40).

6. The housing (1) for a ring motor according to claim 4, characterized in that The invention comprises at least one rib (45) arranged in the cooling channel (4) for guiding the flow of coolant.

7. The housing (1) for a ring motor according to claim 6, characterized in that The sealing plate (40) comprises: A plurality of sub-sealing plates are provided, with gaps extending in the circumferential direction between adjacent sub-sealing plates, and the top of each of the at least one rib (45) has a boss (47) extending into the corresponding gap, so that the at least one rib (45) and the plurality of sub-sealing plates are connected together by welding on both sides of the boss (47).

8. The housing (1) for a ring motor according to claim 5, characterized in that The first circumferential reinforcement plate (51), the second circumferential reinforcement plate (52), the at least one first axial reinforcement plate (61), the at least one second axial reinforcement plate (62) and / or the at least one intermediate reinforcement plate (63) have weight-reducing holes.

9. The housing (1) for a ring motor according to claim 1, characterized in that The radial outer wall (13) has an access opening (130) for accessing the inner cavity (14) so ​​as to be able to approach the at least one rib (45).

10. The housing (1) for a ring motor according to claim 1, characterized in that The reinforcing plate comprises at least one axial reinforcing plate extending in the axial direction, the at least one axial reinforcing plate having a weight-reducing hole, and / or the edge of the at least one axial reinforcing plate facing the radial inner wall (10) having a notch (16).

11. 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.

12. A ring motor, characterized in that: include: A housing (1) for a ring motor according to any one of claims 1 to 11; 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 (30) for fixing and mounting a driven component on the radial inner side of the rotor assembly (3).

13. A grinding mill, characterized in that: include: The ring motor according to claim 12; A cylinder (8) is fixedly connected to the rotor assembly (3) as the driven component.

Images