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. The radial outer wall is provided with an access opening used for accessing the inner cavity. According to the utility model, a structural support with higher strength and better stability is provided for the stator assembly and even the whole annular motor, and meanwhile, the annular motor is equipment with larger volume and complicated installation, so that components in the shell can be more conveniently installed and operated by arranging the access port on the radial outer wall of the shell, and the installation efficiency is improved. Especially, the installation operation of the stator assembly is carried out. 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, poor stability, and inconvenient installation.

[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 the radial outer wall has an access port for accessing the inner cavity.

[0006] Preferably, the stator assembly of the ring motor is fixed to the radial inner wall on the side opposite to the inner cavity by a fixing device passing through the radial inner wall, and the position of the access port is set to be able to operate the fixing device through the access port.

[0007] Preferably, the housing includes a first circumferential reinforcement plate and a second circumferential reinforcement plate circumferentially arranged in the inner cavity and between the radial outer wall and the radial inner wall, and the plurality of access ports are axially arranged between the first circumferential reinforcement plate and the second circumferential reinforcement plate.

[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.

[0009] Preferably, the housing comprises a plurality of ribs arranged in the cooling channel for guiding the flow of the coolant, wherein the plurality of ribs divide the cooling channel into a plurality of sub-channels, and the coolant flows in adjacent sub-channels in opposite directions.

[0010] Preferably, the fixing device passes through the corresponding ribs, passes through the radial inner wall, and is fixedly connected to the mounting member.

[0011] Preferably, the sealing plate comprises:

[0012] a plurality of sub-sealing plates, with gaps extending circumferentially between adjacent sub-sealing plates, and a boss extending into the corresponding gap at the top of each of the plurality of ribs, so that the plurality of ribs and the plurality of sub-sealing plates are connected together by welding on both sides of the boss; or

[0013] A single sealing plate has a plurality of gaps extending in a circumferential direction, and a top of each of the plurality of ribs has a boss extending into the corresponding gap, so that the plurality of ribs and the single sealing plate are connected together by welding on both sides of the boss.

[0014] Preferably, the shell includes a plurality of intermediate reinforcing plates, which are axially connected between the first circumferential reinforcing plate and the second circumferential reinforcing plate and are located radially outside the sealing plate, and corresponding access ports are circumferentially arranged between adjacent intermediate reinforcing plates.

[0015] Preferably, the housing is formed as a single housing continuous in the circumferential direction or is formed to include at least two sub-housings spliced together in the circumferential direction.

[0016] Unlike the prior art which uses a simple frame or annular single plate to install the outer shell of the stator assembly, the present invention uses an annular outer shell with an inner cavity to install the stator assembly, thereby providing a structural support with higher strength and better stability for the stator assembly and even the entire annular motor. At the same time, since the annular motor is a device with a large volume and complex installation, by providing an access port on the radial outer wall of the outer shell, it is possible to more conveniently install the components inside the shell, especially the stator assembly.

[0017] 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.

[0018] 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

[0019] 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.

[0020] Figure 1 2 is a view of a ring motor according to a preferred embodiment of the present invention.

[0021] 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.

[0022] Figure 3 for Figure 2 A partial enlarged view of the sub-housing shown.

[0023] Figure 4 for Figure 2 A partial cross-sectional view of the subhousing is shown.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] Figure 8 Schematic diagram of a mill according to a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0028] 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.

[0029] 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.

[0030] The present invention will be described in detail below by describing exemplary embodiments.

[0031] The utility model provides a shell for a ring-shaped motor, a ring-shaped motor and a grinder.

[0032] 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.

[0033] 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.

[0034] As shown in the figure, a housing 1 for a ring motor according to a preferred embodiment of the present invention 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 thereto. 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 the radial outer wall 13 has an access opening 130 for accessing the inner cavity 14, see Figure 1 and Figure 3 .

[0035] Unlike the prior art which uses a simple frame or annular single plate to install the outer shell of the stator assembly, the present invention uses an annular outer shell with an inner cavity to install the stator assembly, thereby providing a structural support with higher strength and better stability for the stator assembly and even the entire annular motor. At the same time, since the annular motor is a device with a large volume and complex installation, by providing an access port on the radial outer wall of the outer shell, it is possible to more conveniently install the components inside the shell, especially the stator assembly.

[0036] 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.

[0037] Further preferably, the stator assembly 2 of the ring-shaped motor is secured to the radial inner wall 10 on a side opposite the inner cavity 14 by a securing member 23 that passes through the radial inner wall 10, and the access opening 130 is positioned so that the securing member 23 can be operated through the access opening 130. Furthermore, although the securing member 23 in the embodiment shown in the drawings also passes through the ribs 45 and the cover plate 40 associated with the cooling channel 4 described later, according to a simplified embodiment (not shown) that does not include a cooling channel, the securing member 23 can directly pass through the radial inner wall 10 to securely install the stator assembly 2.

[0038] Further preferably, see in particular Figure 4 and 6 The housing 1 includes a first circumferential reinforcing plate 51 and a second circumferential reinforcing plate 52 circumferentially disposed in the inner cavity 14 and between the radial outer wall 13 and the radial inner wall 10. The first and second circumferential reinforcing plates 51 and 52 can provide strong radial support for the housing 1. The plurality of access openings 130 can be axially disposed between the first circumferential reinforcing plate 51 and the second circumferential reinforcing plate 52. This is because the stator assembly 2 is typically mounted radially inward of the radial inner wall 10 of the housing 1 between the first circumferential reinforcing plate 51 and the second circumferential reinforcing plate 52, i.e., on the side opposite to the inner cavity 14. Therefore, disposing the access openings 130 between the first circumferential reinforcing plate 51 and the second circumferential reinforcing plate 52 can facilitate installation of the stator assembly 2.

[0039] Further preferably, continue to see Figure 3-4 The housing 1 includes 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 disposed radially opposite the stator assembly 2. Any suitable coolant, such as water or oil, can 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 housing 1 includes a plurality of ribs 45 disposed in the cooling channel 4 for guiding the flow of coolant. These ribs 45 divide the cooling channel 4 into multiple sub-channels, with the coolant flow in adjacent sub-channels in opposite directions, i.e., the fluid in the sub-channels flows along a serpentine path. This significantly improves cooling efficiency and enhances the cooling effect. The ribs 45 can be secured to 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 ribs 45 further increases the strength of the radial inner wall 10.

[0041] Further preferably, the fixing device 23 passes through the corresponding ribs 45, passes through the radial inner wall 10, and is fixedly connected to the mounting member 22. The fixing device 23 can be, for example, a bolt, and the mounting member 22 can be a mounting bar fixedly provided on the stator core of the stator assembly 2.

[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 is a single sealing plate, having a plurality of gaps extending circumferentially, and the top of each of the plurality of ribs has a boss extending into the corresponding gap, so that the plurality of ribs are connected to the single sealing plate by welding on both sides of the boss. With this structure, the connection between the sealing plate and the ribs can be more conveniently achieved, and the welding connection between the sealing plate and the ribs has higher sealing performance and higher strength.

[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 constructed in an annular shape and has 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 radial outer wall (13) has an intervention port (130) for intervening in the inner cavity (14).

2. The housing (1) for a ring motor according to claim 1, characterized in that The stator assembly (2) of the ring-shaped motor is fixed to the radial inner wall (10) on the side opposite to the inner cavity (14) by a fixing device (23) passing through the radial inner wall (10), and the position of the access port (130) is set to enable the fixing device (23) to be operated through the access port (130).

3. The housing (1) for a ring motor according to claim 2, characterized in that The housing (1) comprises a first circumferential reinforcement plate (51) and a second circumferential reinforcement plate (52) which are circumferentially arranged in the inner cavity (14) and between the radial outer wall (13) and the radial inner wall (10), and the plurality of access ports (130) are axially arranged between the first circumferential reinforcement plate (51) and the second circumferential reinforcement plate (52).

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 reinforcement plate (51) and a second circumferential reinforcement 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 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 in the circumferential direction and configured to be radially opposite to the stator assembly (2).

5. The housing (1) for a ring motor according to claim 4, characterized in that The housing (1) includes a plurality of ribs (45) arranged in the cooling channel (4) for guiding the flow of coolant. The plurality of ribs (45) divide the cooling channel (4) into a plurality of sub-channels, and the coolant flows in adjacent sub-channels in opposite directions.

6. The housing (1) for a ring motor according to claim 5, characterized in that The fixing device (23) passes through the corresponding ribs (45), passes through the radial inner wall (10), and is fixedly connected to the mounting member (22).

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, with gaps extending in the circumferential direction between adjacent sub-sealing plates, and a top portion of each of the plurality of ribs (45) having a boss (47) extending into the corresponding gap, so that the plurality of ribs (45) and the plurality of sub-sealing plates are connected together by welding on both sides of the boss (47); or A single sealing plate has a plurality of gaps extending in a circumferential direction, and a top of each of the plurality of ribs has a boss extending into the corresponding gap, so that the plurality of ribs and the single sealing plate are connected together by welding on both sides of the boss.

8. The housing (1) for a ring motor according to claim 4, characterized in that The housing (1) includes a plurality of intermediate reinforcement plates (63), the plurality of intermediate reinforcement plates (63) being axially connected between a first circumferential reinforcement plate (51) and a second circumferential reinforcement plate (52) and being located radially outside the sealing plate (40), and corresponding insertion openings (130) being provided between adjacent intermediate reinforcement plates (63) along the circumferential direction.

9. The housing (1) for a ring motor according to claim 1, characterized in that The housing (1) is formed as a single housing (1) that is continuous in the circumferential direction or is formed to include at least two sub-housings that are spliced together in 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 inside 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.

Images