Totally-closed air-cooled motor and sleeve for assembling same

Abstract

The utility model discloses a totally-enclosed air-cooled motor and a sleeve for assembling the same. The totally-enclosed air-cooled motor comprises a fan and a rotor assembly. The rotor assembly comprises a rotor shaft, a cast-aluminum rotor, a front bearing and a rear bearing; the fan comprises a hub connected with the rotor shaft, the hub is provided with a threaded hole and a first tool auxiliary assembly hole, the threaded hole is communicated with the first tool auxiliary assembly hole, and the first tool auxiliary assembly hole is used for being matched with a sleeve tool and assembling the rotor shaft and the fan; the arc-shaped main blades are uniformly distributed on the hub; the other end of the rotor shaft is provided with an external thread section which is used for being in threaded connection with the threaded hole; the other end of the rotor shaft is further provided with a second tool auxiliary equipment hole, the second tool auxiliary equipment hole is used for being matched with a sleeve tool, and the sleeve tool is in linkage with the rotor shaft to rotate and lock the rotor shaft and the fan; therefore, the technical problems that the fan is inconvenient to assemble and disassemble, the air volume is small when the fan rotates, the heat dissipation effect is relatively poor, and the service life of the air cooling motor is shortened are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a fully enclosed air-cooled motor and a sleeve for assembling the motor. Background Art

[0002] The structure of the existing fully enclosed air-cooled motor generally includes: front cover, bearing pressure plate, wire-inserted stator, rotor assembly, rear cover, fan, rear cover and junction box, etc.

[0003] The cast aluminum rotor and bearings (front and rear bearings) are pressed onto the rotor shaft to form a rotor assembly. The rotor assembly secures the front bearing to the first bearing chamber on the front end cover via a bearing pressure plate. One end of the wire-embedded stator is placed on the front end cover, with its lead wire passing through the wire outlet on the front end cover. The rear end cover is assembled on the other end of the wire-embedded stator and connected to the front end cover via bolts. At the same time, the rear bearing on the rotor assembly is secured to the second bearing chamber on the rear end cover. The fan is connected to the end of the rotor shaft. Finally, the rear cover, junction box and other components are assembled. The rear cover covers a portion of the front end cover, the wire-embedded stator, the rear end cover and the fan, and is connected to the rear end cover via screws. One end of the junction box is connected to the front end cover, and the other end is supported on the rear cover.

[0004] Such a structure has some shortcomings in actual use:

[0005] 1. The fan and rotor shaft have an interference fit. During assembly on the production line, the rotor shaft needs to be placed on a fixture to apply force to the shaft end, and then a press is used to press the fan into the end of the rotor shaft. This assembly method is time-consuming and labor-intensive, and is very inconvenient to operate. In addition, the interference fit is difficult to control. If it is too small, the fan will become loose when pressed together, posing a safety hazard of the fan flying out at high motor speeds. If it is too large, the fan will be difficult to press in, and the rotor shaft end will easily deform under pressure, resulting in dimensional deviations and affecting the overall quality of the air-cooled motor.

[0006] 2. For fully enclosed air-cooled motors, the front end needs to be fixed with a bearing pressure plate to prevent the rotor assembly from loosening. Therefore, after the fan is cold-pressed into the rotor shaft, the front and rear are locked. When repairing the embedded stator, the bearing pressure plate needs to be destroyed, the rotor assembly pressed onto the fan needs to be removed, and then the embedded stator needs to be maintained. When reassembling after maintenance is completed, the fan and rotor shaft need to be disassembled because the bearing pressure plate needs to cooperate with the front bearing on the rotor assembly. Therefore, the embedded stator needs to be successfully installed after the fan is disassembled and assembled repeatedly, which is very inconvenient.

[0007] 3. The fan blades are straight blades, the air volume is small when the fan rotates, the heat dissipation effect is relatively poor, and the service life of the air-cooled motor is reduced. Utility Model Content

[0008] In view of the above-mentioned deficiencies in the related art, the purpose is to provide a fully enclosed air-cooled motor and an assembly sleeve thereof to solve the technical problems in the related art that the fan is inconvenient to install and unload, the air volume when the fan rotates is small, the heat dissipation effect is relatively poor, and the service life of the air-cooled motor is reduced.

[0009] The technical solution to achieve the purpose is: a fully enclosed air-cooled motor, comprising: a fan and a rotor assembly;

[0010] The rotor assembly includes: a rotor shaft; a cast aluminum rotor connected to a middle position of the rotor shaft; a front bearing connected to one end of the rotor shaft and spaced apart from the cast aluminum rotor; and a rear bearing connected to the other end of the rotor shaft and spaced apart from the cast aluminum rotor.

[0011] The fan comprises: a hub connected to the rotor shaft, a threaded hole and a first tool-assisted assembly hole being provided at a middle position of the hub, the threaded hole being in communication with the first tool-assisted assembly hole, the centerline of the threaded hole being collinear with the centerline of the first tool-assisted assembly hole, the first tool-assisted assembly hole being used to be matched with a sleeve tool to assemble the rotor shaft and the fan;

[0012] and a plurality of arc-shaped main blades, evenly distributed on the hub;

[0013] The other end of the rotor shaft is provided with an external thread section, the external thread section is spaced apart from the rear bearing, and the external thread section is used for threaded connection with the threaded hole;

[0014] The other end of the rotor shaft also has a second tool auxiliary equipment hole, which is surrounded by the external thread segment and is spaced apart from the external thread segment. The center line of the second tool auxiliary equipment hole is on the same straight line as the center line of the external thread segment. The second tool auxiliary equipment hole is used to be matched with the sleeve tool, and the sleeve tool links the rotor shaft to rotate and locks the rotor shaft and the fan.

[0015] Furthermore: the hub has a circular shape;

[0016] The outer diameter of the arc-shaped main blade is larger than the outer diameter of the hub.

[0017] Furthermore: it also includes: a plurality of arc-shaped small blades, which are connected one-to-one to the arc-shaped main blade near the outer edge and are spaced apart from the hub.

[0018] Furthermore: the threaded hole is a right-hand thread.

[0019] Furthermore: the first tool-assisted assembly hole is a first hexagonal hole, and the minimum inner diameter of the first tool-assisted assembly hole is larger than the maximum inner diameter of the threaded hole.

[0020] Furthermore: the external thread section is a right-hand thread.

[0021] Further: the second tool auxiliary equipment hole is a second hexagonal hole.

[0022] Further: it also includes: a front end cover, a bearing pressure plate, a wire-inserted stator, a rear end cover, a rear cover and a junction box;

[0023] The front end cover is penetrated by one end of the rotor shaft;

[0024] The bearing pressure plate is arranged in the front end cover and fixes the front bearing in the front end cover;

[0025] One end of the wire-embedded stator is connected to the front end cover, and the other end is connected to the rear end cover;

[0026] The rear end cover is connected to the rear bearing, is penetrated by the other end of the rotor shaft, and is connected to the front end cover by bolts;

[0027] The rear cover covers a portion of the front cover, the wire-embedded stator, the rear cover and the fan, and the rear cover is connected to the rear cover by screws;

[0028] One end of the junction box is connected to the front end cover, and the other end is supported on the rear cover.

[0029] A sleeve for assembling a fully enclosed air-cooled motor, comprising: a sleeve tool for assembling the fan and the rotor assembly on the fully enclosed air-cooled motor;

[0030] The sleeve tool comprises: a rotation-stop outer sleeve, one end of which is plugged into the first tool auxiliary assembly hole and the other end is away from the first tool auxiliary assembly hole, the rotation-stop outer sleeve having a stepped inner space, the stepped inner space being connected to the second tool auxiliary equipment hole;

[0031] a wrench transmission rod, one end of which is disposed in the stepped inner space, and the other end of which passes through the stepped inner space and is plugged into the second tool auxiliary equipment hole;

[0032] a bearing connected to the wrench transmission rod, in the stepped inner space, and connected to the anti-rotation sleeve;

[0033] Two retaining springs are connected to the wrench transmission rod at intervals and are used to limit the position of the bearing;

[0034] And an electric ratchet wrench, one end of which is clamped on the anti-rotation sleeve, is arranged in the stepped inner space, and is connected to one end of the wrench transmission rod for linking the wrench transmission rod to rotate.

[0035] Furthermore, the anti-rotation sleeve includes: a first part, the first part has a square space therein, and an opening on the side wall, the opening is connected to the square space, and the opening is used to clamp one end of the wrench transmission rod;

[0036] a second portion connected to the bottom outer wall of the first portion;

[0037] And a third part is connected to the second part, the third part is used to be plugged into the first tool auxiliary assembly hole, and there is a stepped through hole between the third part and the second part, the stepped through hole is connected to the square space, and the stepped through hole and the square space together form the stepped inner space.

[0038] Furthermore: the first part has a rectangular parallelepiped shape; the second part has a cylindrical shape; and the third part has a hexagonal shape.

[0039] Moreover, after plane projection from top to bottom, the area size of the first part is larger than the area size of the second part and larger than the area size of the third part.

[0040] Furthermore: the wrench transmission rod comprises: a rod, the rod having at least a hexagonal segment and a round shaft segment, the hexagonal segment being plugged into the second tool auxiliary equipment hole, and the round shaft segment being connected to the bearing and the retaining spring;

[0041] and a wrench connector connected to the end of the rod and used for connecting with the electric ratchet wrench.

[0042] The above technical solution has the following beneficial effects: a fully enclosed air-cooled motor and a sleeve for assembling the same. Compared with the related art, the fan includes a hub and arc-shaped main blades; the fan is threadedly connected to the external threaded section on the rotor shaft through a threaded hole on the hub. The fan is connected to the rotor shaft. The sleeve tool is engaged with the first tool auxiliary assembly hole and the second tool auxiliary equipment hole. The sleeve tool rotates, which in turn rotates the rotor shaft, locking the rotor shaft and the fan, making assembly relatively convenient.

[0043] Moreover, compared with straight blades, the arc-shaped main blades have a relatively larger contact area with the air, which can make the air flow more smoothly, increase the air volume, have a relatively better heat dissipation effect, and increase the service life of the air-cooled motor;

[0044] This overcomes the technical problems of inconvenient fan assembly and disassembly, small air volume when the fan rotates, relatively poor heat dissipation effect, and reduced service life of the air-cooled motor. It achieves the technical effect of relatively convenient fan assembly and disassembly, relatively large air volume when the fan rotates, relatively good heat dissipation effect, and increased service life of the air-cooled motor, and is practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 This is the exploded view of the final assembly of the fully enclosed air-cooled motor;

[0046] Figure 2 Schematic diagram of the structure of the rotor shaft and fan;

[0047] Figure 3 It is a partial cross-sectional view of the fan;

[0048] Figure 4 A schematic diagram showing the structure of a socket tool with an electric ratchet wrench removed;

[0049] Figure 5 for Figure 4 Exploded diagram;

[0050] Figure 6 A schematic diagram of the structure for locking the rotor shaft and fan using a sleeve tool;

[0051] Figure 7 for Figure 6 A partial cross-sectional view of

[0052] In the figure: 10. Fan, 11. Hub, 11-1. Threaded hole, 11-2. First tool auxiliary assembly hole, 12. Curved main blade, 13. Curved small blade, 20. Rotor assembly, 21. Rotor shaft, 21-1. External thread segment, 21-2. Second tool auxiliary assembly hole, 22. Cast aluminum rotor, 23. Front bearing, 24. Rear bearing, 30. Front cover, 40. Bearing pressure plate, 50. Embedded stator, 60. Rear cover, 70. Rear cover, 8 0. Junction box, 100. Anti-rotation sleeve, 100-1. Stepped inner space, 101. First part, 101-1. Square space, 101-2. Opening, 102. Second part, 103. Third part, 103-1. Stepped through hole, 200. Wrench transmission rod, 201. Rod, 201-1. Hexagonal segment, 201-2. Round shaft segment, 202. Wrench joint, 300. Bearing, 400. Circlip, 500. Electric ratchet wrench. DETAILED DESCRIPTION

[0053] In order to make the content easier to understand, the following is a further detailed description based on specific embodiments and in conjunction with the accompanying drawings;

[0054] A fully enclosed air-cooled motor and its assembly sleeve solve the technical problems in the related art such as inconvenient fan assembly and disassembly, small air volume when the fan rotates, relatively poor heat dissipation effect, and reduced service life of the air-cooled motor. The motor can be manufactured and used, and achieves the positive effects of relatively convenient fan assembly and disassembly, relatively large air volume when the fan rotates, relatively good heat dissipation effect, and increased service life of the air-cooled motor. The overall concept is as follows:

[0055] One implementation method:

[0056] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 6 、 Figure 7 As shown; A fully enclosed air-cooled motor and a sleeve for assembling the same, the fully enclosed air-cooled motor comprising: a fan 10 and a rotor assembly 20;

[0057] The rotor assembly 20 includes: a rotor shaft 21; a cast aluminum rotor 22 connected to a middle position of the rotor shaft 21; a front bearing 23 connected to one end of the rotor shaft 21 and spaced apart from the cast aluminum rotor 22; and a rear bearing 24 connected to the other end of the rotor shaft 21 and spaced apart from the cast aluminum rotor 22.

[0058] The fan 10 includes: a hub 11 connected to the rotor shaft 21, a threaded hole 11-1 and a first tool-assisted assembly hole 11-2 at a central position of the hub 11, the threaded hole 11-1 being in communication with the first tool-assisted assembly hole 11-2, the centerline of the threaded hole 11-1 being collinear with the centerline of the first tool-assisted assembly hole 11-2, the first tool-assisted assembly hole 11-2 being configured to be used with a sleeve tool to assemble the rotor shaft 21 and the fan 10;

[0059] and a plurality of arc-shaped main blades 12, evenly distributed on the hub 11;

[0060] The other end of the rotor shaft 21 has an external thread section 21 - 1 , which is spaced apart from the rear bearing 24 and is used for threaded connection with the threaded hole 11 - 1 ;

[0061] The other end of the rotor shaft 21 further has a second tool-assisted equipment hole 21-2. The second tool-assisted equipment hole 21-2 is surrounded by the external thread segment 21-1 and is spaced apart from the external thread segment 21-1. The center line of the second tool-assisted equipment hole 21-2 is collinear with the center line of the external thread segment 21-1. The second tool-assisted equipment hole 21-2 is used to be matched with the sleeve tool. The sleeve tool is linked to the rotation of the rotor shaft 21 to lock the rotor shaft 21 and the fan 10.

[0062] Specifically, during implementation, the fan 10 includes a hub 11 and arc-shaped main blades 12; the fan 10 is threadedly connected to the external thread section 21-1 on the rotor shaft 21 through the threaded hole 11-1 on the hub 11. The fan 10 is pre-installed on the rotor shaft 21. A sleeve tool is used to engage with the first tool auxiliary assembly hole 11-2 and the second tool auxiliary equipment hole 21-2. The sleeve tool rotates, which in turn rotates the rotor shaft 21, locking the rotor shaft 21 and the fan 10. Assembly is relatively convenient;

[0063] Moreover, the arc-shaped main blades 12 have a relatively larger contact area with the air than straight blades, which can make the air flow more smoothly, increase the air volume, have a relatively better heat dissipation effect, and extend the service life of the air-cooled motor;

[0064] Another embodiment:

[0065] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 6 、 Figure 7 As shown; in implementation, the hub 11 has a circular shape; the number of the arc-shaped main blades 12 is eleven, and the outer diameter of the arc-shaped main blades 12 is larger than the outer diameter of the hub 11; the appearance is relatively beautiful, and the arc bending direction of the arc-shaped main blades 12 is consistent with the rotation direction of the fully enclosed air-cooled motor. For example: if the fully enclosed air-cooled motor rotates counterclockwise, the arc bending direction of the arc-shaped main blades 12 is as follows: Figure 2 As shown, the arc-shaped main blade 12 has a relatively larger contact area with the air than the straight blade, which can make the air flow more smoothly, increase the air volume, have a relatively good heat dissipation effect, and increase the service life of the air-cooled motor;

[0066] The device further comprises: a plurality of arc-shaped small blades 13, which are connected one-to-one to the outer edge of the arc-shaped main blade 12 and are spaced apart from the hub 11; the arc-shaped small blades 13 increase the contact area with the air, enable the air to circulate more smoothly, increase the air volume, and improve the heat dissipation effect;

[0067] The threaded hole 11-1 is a right-hand thread (a right-hand thread is referred to as a normal thread in the prior art). Since the fully enclosed air-cooled motor rotates counterclockwise (as viewed from the fan 10), the right-hand thread ensures that the fan 10 and the rotor shaft 21 are always tightened, reducing the chance of the two falling off and being relatively safe.

[0068] The first tool auxiliary assembly hole 11-2 is a first hexagonal hole, and the minimum inner diameter of the first tool auxiliary assembly hole 11-2 is larger than the maximum inner diameter of the threaded hole 11-1, which is conducive to the plug-in connection between the first tool auxiliary assembly hole 11-2 and the sleeve tool, and the operation is relatively convenient;

[0069] The center line of the threaded hole 11-1 is in the same straight line as the center line of the first tool-assisted assembly hole 11-2, and the center line of the second tool-assisted assembly hole 21-2 is in the same straight line as the center line of the external thread segment 21-1, ensuring concentricity and relatively smooth assembly;

[0070] The rotor shaft 21 is a stepped shaft;

[0071] The external thread section 21-1 is a right-hand thread (a right-hand thread is referred to as a normal thread in the prior art). Since the fully enclosed air-cooled motor rotates counterclockwise (as viewed from the fan 10), the right-hand thread ensures that the fan 10 and the rotor shaft 21 are always tightly screwed together, reducing the chance of the two falling off.

[0072] The second tool auxiliary equipment hole 21-2 is a second hexagonal hole, which is convenient for plugging and matching with a sleeve tool, and the operation is relatively convenient;

[0073] Another embodiment:

[0074] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 6 、 Figure 7 When implemented, the fully enclosed air-cooled motor further includes: a front cover 30, a bearing pressure plate 40, a wire-inserted stator 50, a rear cover 60, a rear cover 70 and a terminal box 80;

[0075] The front end cover 30 is penetrated by one end of the rotor shaft 21;

[0076] The bearing pressure plate 40 is disposed in the front end cover 30 and fixes the front bearing 23 in the front end cover 30;

[0077] One end of the wire-embedded stator 50 is connected to the front end cover 30 , and the other end is connected to the rear end cover 60 ;

[0078] The rear end cover 60 is connected to the rear bearing 24, is penetrated by the other end of the rotor shaft 21, and is connected to the front end cover 30 by bolts;

[0079] The rear cover 70 covers a portion of the front cover 30, the wire-inserted stator 50, the rear cover 60 and the fan 10, and the rear cover 70 is connected to the rear cover 60 by screws;

[0080] One end of the junction box 80 is connected to the front cover 30, and the other end is supported on the rear cover 70;

[0081] The cast aluminum rotor 22, front bearing 23, rear bearing 24, front end cover 30, bearing pressure plate 40, wire-inserted stator 50, rear end cover 60, rear cover 70, and terminal box 80 are all common structures in the prior art and are not the inventive point of the present invention. They are only provided to better describe the present invention, facilitate understanding of the technical solution of the present invention, and make the technical solution of the present application clearer and more complete. After reading the disclosed content, a person of ordinary skill in the art can directly and unambiguously know how to configure them without any creative effort or excessive experimentation.

[0082] Another embodiment:

[0083] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 As shown; when implemented, the fully enclosed air-cooled motor assembly sleeve includes: the fully enclosed air-cooled motor, the fan 10 and the rotor assembly 20 for assembling the sleeve tool;

[0084] The sleeve tool includes: a rotation-stop outer sleeve 100, one end of which is plugged into the first tool auxiliary assembly hole 11-2, and the other end is away from the first tool auxiliary assembly hole 11-2, and the rotation-stop outer sleeve 100 has a stepped inner space 100-1, and the stepped inner space 100-1 is connected to the second tool auxiliary equipment hole 21-2;

[0085] A wrench transmission rod 200, one end of which is disposed in the stepped inner space 100-1, and the other end of which passes through the stepped inner space 100-1 and is plugged into the second tool auxiliary equipment hole 21-2;

[0086] The bearing 300 is connected to the wrench transmission rod 200 and is connected to the anti-rotation sleeve 100 in the stepped inner space 100-1;

[0087] Two retaining rings 400 are connected to the wrench transmission rod 200 at intervals to limit the position of the bearing 300;

[0088] and an electric ratchet wrench 500, one end of which is clamped on the anti-rotation sleeve 100, disposed in the stepped inner space 100-1, and connected to one end of the wrench transmission rod 200 for rotating in conjunction with the wrench transmission rod 200;

[0089] The anti-rotation sleeve 100 includes: a first portion 101, wherein the first portion 101 has a square space 101-1 therein and an opening 101-2 on a side wall, the opening 101-2 being in communication with the square space 101-1 and being used to clamp one end of the wrench transmission rod 200; a second portion 102 connected to the bottom outer wall of the first portion 101; and a third portion 103 connected to the second portion 102, the third portion 103 being used to be plugged into the first tool auxiliary assembly hole 11-2, and a stepped through hole 103-1 being formed between the third portion 103 and the second portion 102, the stepped through hole 103-1 being in communication with the square space 101-1, and the stepped through hole 103-1 and the square space 101-1 together forming the stepped inner space 100-1;

[0090] The first portion 101 has a rectangular parallelepiped shape; the second portion 102 has a cylindrical shape; and the third portion 103 has a hexagonal shape. Furthermore, when projected from top to bottom, the area of ​​the first portion 101 is larger than that of the second portion 102, and larger than that of the third portion 103. Control of the outer dimensions facilitates the manufacturing and forming of the anti-rotation sleeve 100, facilitates connection with other components, and facilitates mating with the first tool auxiliary assembly hole 11-2, making it relatively convenient to use.

[0091] The stepped through hole 103-1 and the square space 101-1 are provided. The stepped through hole 103-1 and the square space 101-1 together form a stepped inner space 100-1, which is convenient for assembling other components and has a more compact structure.

[0092] An opening 101 - 2 is provided, for example, a square opening, which is conducive to matching the shape of one end of the wrench transmission rod 200 , clamping the limit wrench transmission rod 200 to prevent the wrench transmission rod 200 from sliding, which is relatively safe;

[0093] The wrench transmission rod 200 includes: a rod 201 having at least a hexagonal segment 201-1 and a circular shaft segment 201-2, wherein the hexagonal segment 201-1 is plugged into the second tool auxiliary equipment hole 21-2, and the circular shaft segment 201-2 is connected to the bearing 300 and the retaining ring 400; and a wrench connector 202 connected to the end of the rod 201 for connecting to the electric ratchet wrench 500;

[0094] A hexagonal segment 201 - 1 (hexagonal segment here means that the rod 201 has a hexagonal shape) is provided to facilitate plugging and matching with the second tool auxiliary equipment hole 21 - 2. When the wrench transmission rod 200 rotates, the wrench transmission rod 200 can be linked to rotate the rotor shaft 21;

[0095] A round shaft segment 201-2 is provided. The outer diameter of the round shaft segment 201-2 is larger than the maximum outer diameter of the hexagonal segment 201-1, which facilitates the connection between the bearing 300 and the retaining spring 400. The assembly is relatively convenient, so that the wrench transmission rod 200 is connected and positioned by the bearing 300, and the wrench transmission rod 200 can rotate smoothly.

[0096] The outer diameter of the wrench connector 202 is larger than the outer diameter of the rod 201, and the wrench connector 202 has an inner hole, such as a third inner hexagonal hole, for connecting with the electric ratchet wrench 500, which facilitates the rotation of the electric ratchet wrench 500 in conjunction with the wrench transmission rod 200, and the assembly and disassembly of the electric ratchet wrench 500 is also relatively convenient.

[0097] The bearing 300 and the retaining spring 400 are commonly used structures in the prior art. The bearing 300 can be, for example, a sliding bearing or a deep groove ball bearing, and is used to connect the positioning wrench transmission rod 200, allowing the wrench transmission rod 200 to rotate smoothly. The retaining spring 400 is clamped at the circular shaft segment 201-2 to limit the position of the bearing 300 and prevent the bearing 300 from exceeding the circular shaft segment 201-2 when moving. The structural reliability is relatively good.

[0098] The electric ratchet wrench 500 is a common structure in the prior art, which is used to generate rotational power and rotate the wrench transmission rod 200;

[0099] The working principle is as follows: the fan 10 is threadedly connected to the external thread section 21-1 on the rotor shaft 21 through the threaded hole 11-1 on the hub 11. The fan 10 is pre-installed on the rotor shaft 21. The anti-rotation sleeve 100 is plugged into the first tool auxiliary assembly hole 11-2, and the wrench transmission rod 200 is plugged into the second tool auxiliary equipment hole 21-2. The electric ratchet wrench 500 rotates, which in turn rotates the wrench transmission rod 200, and the wrench transmission rod 200 also rotates the rotor shaft 21, thereby locking the rotor shaft 21 and the fan 10. Assembly is relatively convenient.

[0100] Moreover, the arc-shaped main blades 12 have a relatively larger contact area with the air than straight blades, which can make the air flow more smoothly, increase the air volume, have a relatively better heat dissipation effect, and extend the service life of the air-cooled motor;

[0101] In the description, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", etc. indicating directions or positional relationships are based on the positional relationships shown in the drawings and are only used to facilitate or simplify the description, and do not necessarily indicate specific directions. The operating procedures described in the embodiments are not absolute steps for use and may be adjusted accordingly in actual use.

[0102] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meanings understood by persons of ordinary skill in the relevant art. The terms "first," "second," and similar words used in the specification and claims do not denote any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "a" or "an" and similar words do not necessarily indicate a limit on quantity, but rather indicate the presence of at least one, which shall be determined based on the content of the embodiments.

[0103] The above is only a preferred specific implementation method, but the scope of protection is not limited to this. Any technician familiar with this technical field can make equivalent replacements or changes based on the technical solutions and inventive concepts within the disclosed technical scope, which should be covered by the scope of protection.

Claims

1. A fully enclosed air-cooled motor, comprising: A fan (10) and a rotor assembly (20); The rotor assembly (20) comprises: a rotor shaft (21); a cast aluminum rotor (22) connected to a middle position of the rotor shaft (21); a front bearing (23) connected to one end of the rotor shaft (21) and spaced apart from the cast aluminum rotor (22); and a rear bearing (24) connected to the other end of the rotor shaft (21) and spaced apart from the cast aluminum rotor (22); The fan (10) is characterized in that the fan (10) comprises: a hub (11) connected to the rotor shaft (21); a threaded hole (11-1) and a first tool-assisted assembly hole (11-2) are provided at a middle position of the hub (11); the threaded hole (11-1) is communicated with the first tool-assisted assembly hole (11-2); a center line of the threaded hole (11-1) and a center line of the first tool-assisted assembly hole (11-2) are on the same straight line; the first tool-assisted assembly hole (11-2) is used to be matched with a sleeve tool to assemble the rotor shaft (21) and the fan (10); and a plurality of arc-shaped main blades (12) uniformly distributed on the hub (11); The other end of the rotor shaft (21) is provided with an external thread section (21-1), the external thread section (21-1) is spaced apart from the rear bearing (24), and the external thread section (21-1) is used for threaded connection with the threaded hole (11-1); The other end of the rotor shaft (21) further comprises a second tool auxiliary equipment hole (21-2), the second tool auxiliary equipment hole (21-2) being surrounded by the external thread segment (21-1) and spaced apart from the external thread segment (21-1), the center line of the second tool auxiliary equipment hole (21-2) being on the same straight line as the center line of the external thread segment (21-1), the second tool auxiliary equipment hole (21-2) being used in conjunction with the sleeve tool, the sleeve tool being linked to the rotation of the rotor shaft (21) to lock the rotor shaft (21) and the fan (10).

2. A fully enclosed air-cooled motor according to claim 1, characterized in that: The hub (11) has a circular shape; The outer diameter of the arc-shaped main blade (12) is greater than the outer diameter of the hub (11).

3. A fully enclosed air-cooled motor according to claim 2, characterized in that: Also includes: A plurality of arcuate small blades (13) are connected one-to-one to the arcuate main blade (12) near the outer edge and are spaced apart from the hub (11).

4. A fully enclosed air-cooled motor according to any one of claims 2 or 3, characterized in that: The threaded hole (11-1) is a right-hand thread.

5. A fully enclosed air-cooled motor according to claim 4, characterized in that: The first tool-assisted assembly hole (11-2) is a first hexagonal hole, and the minimum inner diameter of the first tool-assisted assembly hole (11-2) is greater than the maximum inner diameter of the threaded hole (11-1).

6. A fully enclosed air-cooled motor according to claim 5, characterized in that: The external thread section (21-1) is a right-hand thread.

7. A fully enclosed air-cooled motor according to claim 6, characterized in that: The second tool auxiliary equipment hole (21-2) is a second hexagonal hole.

8. The fully enclosed air-cooled motor according to claim 7, characterized in that: Also includes: A front end cover (30), a bearing pressure plate (40), a wire-inserted stator (50), a rear end cover (60), a rear cover (70) and a junction box (80); The front end cover (30) is penetrated by one end of the rotor shaft (21); The bearing pressure plate (40) is disposed in the front end cover (30) and fixes the front bearing (23) in the front end cover (30); One end of the wire-embedded stator (50) is connected to the front end cover (30), and the other end is connected to the rear end cover (60); The rear end cover (60) is connected to the rear bearing (24), is penetrated by the other end of the rotor shaft (21), and is connected to the front end cover (30) by bolts; The rear cover (70) covers a portion of the front cover (30), the wire-embedded stator (50), the rear cover (60) and the fan (10), and the rear cover (70) is connected to the rear cover (60) by screws; One end of the junction box (80) is connected to the front end cover (30), and the other end is supported on the rear cover (70).

9. A sleeve for assembling a fully enclosed air-cooled motor, characterized in that: include: The sleeve tool for assembling the fan (10) and the rotor assembly (20) of the fully enclosed air-cooled motor according to any one of claims 1 to 8; The sleeve tool comprises: a rotation-stopping outer sleeve (100), one end of which is plugged into the first tool auxiliary assembly hole (11-2), and the other end of which is away from the first tool auxiliary assembly hole (11-2); the rotation-stopping outer sleeve (100) has a stepped inner space (100-1) in it, and the stepped inner space (100-1) is connected to the second tool auxiliary equipment hole (21-2); A wrench transmission rod (200), one end of which is disposed in the stepped inner space (100-1), and the other end of which passes through the stepped inner space (100-1) and is plugged into the second tool auxiliary equipment hole (21-2); A bearing (300) is connected to the wrench transmission rod (200), is in the stepped inner space (100-1), and is connected to the anti-rotation outer sleeve (100); Two retaining springs (400) are connected to the wrench transmission rod (200) at intervals and are used to limit the position of the bearing (300); And an electric ratchet wrench (500), one end of which is clamped on the anti-rotation outer sleeve (100), is arranged in the stepped inner space (100-1), and is connected to one end of the wrench transmission rod (200) for linking the wrench transmission rod (200) to rotate.

10. The fully enclosed air-cooled motor assembly sleeve according to claim 9, characterized in that: The anti-rotation sleeve (100) comprises: a first part (101), the first part (101) has a square space (101-1) in the inside, and an opening (101-2) on the side wall, the opening (101-2) is communicated with the square space (101-1), and the opening (101-2) is used to clamp one end of the wrench transmission rod (200); a second portion (102) connected to the bottom outer wall of the first portion (101); and a third part (103) connected to the second part (102), the third part (103) being used for plugging into the first tool auxiliary assembly hole (11-2), and a stepped through hole (103-1) being provided between the third part (103) and the second part (102), the stepped through hole (103-1) being in communication with the square space (101-1), and the stepped through hole (103-1) and the square space (101-1) together forming the stepped inner space (100-1).

11. The sleeve for assembling a fully enclosed air-cooled motor according to claim 10, characterized in that: The first part (101) has a rectangular parallelepiped structure; the second part (102) has a cylindrical structure; and the third part (103) has a hexagonal structure. Furthermore, after plane projection from top to bottom, the area size of the first part (101) is larger than the area size of the second part (102), and larger than the area size of the third part (103).

12. The sleeve for assembling a fully enclosed air-cooled motor according to claim 9, characterized in that: The wrench transmission rod (200) comprises: a rod (201), the rod (201) having at least a hexagonal section (201-1) and a circular shaft section (201-2), the hexagonal section (201-1) being plugged into the second tool auxiliary equipment hole (21-2), and the circular shaft section (201-2) being connected to the bearing (300) and the retaining spring (400); and a wrench connector (202) connected to the end of the rod (201) for connecting to the electric ratchet wrench (500).

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