An easy-to-assemble permanent magnet motor

Abstract

The present invention relates to an easy-to-assemble permanent magnet motor, belonging to the technical field of permanent magnet motors. It comprises a casing, the two ends of which are detachably connected with a front cover and a rear cover by screws, the bottom outer wall of the casing is fixedly connected with a bottom plate for supporting and installing the entire motor, and a stator housing is provided inside the casing, the stator housing is annularly installed on the inner wall of the casing, and the inner wall of the stator housing is annularly evenly distributed with a plurality of stator windings. The present invention can achieve the effect of simultaneously fixing and connecting a plurality of permanent magnets by setting the rotor structure into a main roller shaft, an output shaft, a secondary roller shaft, a connecting shaft and an adjusting shaft, and the operation is simple and convenient, and the connection stability is strong, and there is no need to use a traditional gluing process to fix the permanent magnets; the rotor structure set by the present invention can be quickly assembled and disassembled, which brings great convenience to the subsequent maintenance work, and can also reduce the cost of subsequent maintenance and replacement, and effectively improve the practicality of the entire motor.

Description

Technical Field

[0001] The invention belongs to the technical field of permanent magnet motors and relates to an easy-to-assemble permanent magnet motor. Background Art

[0002] Permanent magnet synchronous motors use permanent magnets to provide excitation, making the motor structure simpler, reducing processing and assembly costs, and eliminating collector rings and brushes that are prone to problems, improving the reliability of motor operation; and because no excitation current is required, there is no excitation loss, which improves the efficiency and power density of the motor. Permanent magnet synchronous motors are composed of stators, rotors, and end covers. The stator is basically the same as an ordinary induction motor, and a laminated structure is used to reduce the iron loss during motor operation. The rotor can be made solid or laminated. The armature winding can be a concentrated full-pitch winding, or a distributed short-pitch winding and an unconventional winding.

[0003] The rotor structure of permanent magnet motors is mainly divided into two categories: built-in type and surface type. The built-in rotor embeds the permanent magnet into the rotor core. It has a simple processing technology and a regular shape, which is suitable for wide speed regulation occasions. The surface rotor has the characteristics of no magnetic resistance torque, large equivalent air gap, small armature reaction, and good dynamic performance. It is often used in servo motors and traction motors. The surface rotor permanent magnet is usually in the shape of a tile. It is generally bonded to the rotor core with a suitable adhesive, and it is ensured that there is no gap or displacement between the permanent magnet and the rotor core. However, the traditional gluing method is not only cumbersome and troublesome to process, but also brings unnecessary trouble to the subsequent maintenance work. Therefore, we propose an easy-to-assemble permanent magnet motor to solve the above-mentioned problems. Summary of the invention

[0004] In view of this, the present invention provides an easy-to-assemble permanent magnet motor in order to solve the problem that the traditional gluing method between the permanent magnet and the rotor core is not only cumbersome and troublesome to process, but also brings unnecessary trouble to the subsequent maintenance work.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: comprising a casing, wherein the two ends of the casing are detachably connected with a front cover and a rear cover by screws, respectively, a bottom plate for supporting and installing the entire motor is fixedly connected to the bottom outer wall of the casing, a stator housing is arranged inside the casing, the stator housing is annularly installed on the inner wall of the casing, a plurality of stator windings are evenly distributed in an annular manner on the inner wall of the stator housing, a junction box used in conjunction with the stator winding is arranged on the top outer wall of the casing, a rotor structure used in conjunction with the stator winding is arranged inside the casing, the rotor structure comprises a mounting member and a plurality of permanent magnets, the plurality of permanent magnets are arranged in an annular manner and are detachably connected to the mounting member, and the rotor structure further comprises:

[0006] The output shaft is fixedly connected to the mounting member, and the output shaft is driven to rotate through the mounting member by the cooperation between the permanent magnet and the stator winding. A bearing seat is provided on one side of the housing near the front end cover, and the output shaft is rotatably connected to the bearing seat through the bearing, and one end of the output shaft passes through the front end cover and extends outward;

[0007] The connecting shaft is detachably connected to the mounting member, is positioned and docked with the output shaft, and cooperates with the mounting member to complete the installation of multiple permanent magnets. At the same time, when the mounting member and the output shaft rotate, the connecting shaft can be driven to rotate synchronously. A bearing seat is provided on one side of the inner part of the housing close to the rear end cover. The connecting shaft is rotatably connected to the bearing seat through the bearing, and one end of the connecting shaft passes through the rear end cover and extends outward;

[0008] The end of the connecting shaft away from the output shaft is detachably connected to the fan structure, the outer side of the rear end cover is detachably connected to the wind shield through screws, and the wind shield covers the fan structure inside, and a plurality of ventilation holes are opened on the side of the wind shield away from the rear end cover.

[0009] Furthermore, the mounting member includes a main roller shaft fixedly mounted on the outer wall of one end of the output shaft, and the main roller shaft is located on the inner side of the stator shell. The outer wall of the main roller shaft is annularly provided with multiple main clamping grooves, and multiple permanent magnets are respectively adapted to be clamped in the main clamping grooves.

[0010] Furthermore, a mounting groove is provided on the side of the main roller shaft away from the output shaft, one end of the output shaft is located in the mounting groove and positioned and docked with one end of the connecting shaft, a positioning component for simultaneously positioning and installing multiple permanent magnets is provided in the mounting groove, and the positioning component is adjusted and controlled by the connecting shaft.

[0011] Furthermore, the inner side surfaces of the plurality of permanent magnets are fixedly connected with positioning blocks, and the bottom walls of the plurality of main clamping slots are provided with positioning holes communicated with the mounting slots.

[0012] Furthermore, the positioning assembly includes a nut plate slidably connected to the inside of the mounting groove, and a plurality of retaining blocks are fixedly connected in an annular shape and equidistantly to one side of the nut plate away from the opening of the mounting groove. The plurality of positioning blocks are located on one side of the inside of the mounting groove and are provided with positioning grooves for use with the retaining blocks.

[0013] Furthermore, an adjusting shaft is slidably embedded in one end of the connecting shaft, one end of the adjusting shaft extends outward and is rotatably connected to one end of the output shaft located inside the mounting groove, and the nut plate is threadedly sleeved on the adjusting shaft.

[0014] Furthermore, the adjusting shaft includes a threaded shaft section and a spline shaft section that are integrally connected, one end of the output shaft is rotatably connected to one end of the threaded shaft section, the nut plate is threadedly sleeved on the outer wall of the threaded shaft section, and one end of the connecting shaft is provided with a spline groove that is slidably connected to the spline shaft section.

[0015] Furthermore, a first inclined surface is provided on one side of the stop block close to the adjustment shaft, and a second inclined surface is provided on an inner wall of one side of the positioning groove to cooperate with the first inclined surface.

[0016] Furthermore, a secondary roller shaft is rotatably sleeved on the outer wall of one end of the connecting shaft close to the output shaft, and the cross-section of the secondary roller shaft is consistent with that of the main roller shaft. The outer wall of the secondary roller shaft is annularly provided with a plurality of secondary clamping grooves corresponding to the main clamping grooves at equal intervals, and one side of the permanent magnet is adapted to be clamped in the secondary clamping grooves, and a plurality of connecting holes are annularly provided on one side of the secondary roller shaft, and connecting screws are passed through the plurality of connecting holes, and a plurality of first threaded holes corresponding to the connecting holes are provided on one side of the main roller shaft, and the connecting screws are threadedly connected in the first threaded holes for detachable connection between the main roller shaft and the secondary roller shaft.

[0017] Furthermore, a side of the secondary roller shaft close to the main roller shaft is fixedly connected with a plurality of guide rods in an annular shape and equidistantly, and the plurality of guide rods all slide through a side of the nut plate.

[0018] Furthermore, the fan structure includes a connecting rod, the outer wall of the connecting rod is annularly provided with multiple fan blades, one end of the connecting rod is integrally formed with a mounting screw, a second threaded hole is opened at the end of the connecting shaft away from the output shaft, and the mounting screw is threadedly connected in the second threaded hole.

[0019] The beneficial effects of the present invention are:

[0020] The present invention arranges the rotor structure into a main roller shaft, an output shaft, a secondary roller shaft, a connecting shaft and an adjusting shaft, utilizes the main roller shaft to position and connect the permanent magnet, and the main roller shaft drives the output shaft to rotate, and then utilizes the secondary roller shaft to connect with the main roller shaft, so that the connecting shaft and the adjusting shaft are docked, and the adjusting shaft is driven to rotate by rotating the connecting shaft, thereby achieving the effect of simultaneously fixing and connecting multiple permanent magnets, and the operation is simple and convenient, and the connection stability is strong, and there is no need to use the traditional gluing process to fix the permanent magnet; the rotor structure arranged by the present invention can be quickly assembled and disassembled, which brings great convenience to the subsequent maintenance work, and can also reduce the cost of subsequent maintenance and replacement, and effectively improves the practicality of the entire motor.

[0021] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0023] Figure 1 It is a left-side stereoscopic view of the overall structure of an easy-to-assemble permanent magnet motor of the present invention;

[0024] Figure 2 It is a left-side stereoscopic cross-sectional view of the overall structure of an easy-to-assemble permanent magnet motor of the present invention;

[0025] Figure 3 A right-side stereoscopic view of the overall structure of an easily assembled permanent magnet motor of the present invention;

[0026] Figure 4 It is a left-side stereoscopic exploded view of the overall structure of an easy-to-assemble permanent magnet motor of the present invention;

[0027] Figure 5 A three-dimensional diagram of a rotor component connection structure of an easily assembled permanent magnet motor of the present invention;

[0028] Figure 6 It is a three-dimensional cross-sectional view of an integral connection structure of a rotor component of a permanent magnet motor that is easy to assemble according to the present invention;

[0029] Figure 7 It is a left-side stereoscopic exploded view of a rotor component and a fan blade connection structure of an easily assembled permanent magnet motor of the present invention;

[0030] Figure 8 It is a right-side stereoscopic exploded view of a rotor component and a fan blade connection structure of an easily assembled permanent magnet motor of the present invention;

[0031] Fig. 9 It is a right-side stereoscopic exploded view of a rotor component and a permanent magnet connection structure of an easily assembled permanent magnet motor of the present invention;

[0032] Fig.10 This is a three-dimensional diagram of the connection structure between the permanent magnet and the positioning block of an easy-to-assemble permanent magnet motor of the present invention;

[0033] Fig.11 The present invention is a stereoscopic diagram of the connection structure between the adjusting shaft and the nut plate of an easily assembled permanent magnet motor.

[0034] Reference numerals: 1, housing; 2, front cover; 3, stator housing; 4, bearing seat; 5, bottom plate; 6, terminal box; 7, stator winding; 8, rotor structure; 9, bearing; 10, rear cover; 11, permanent magnet; 12, wind cover; 121, vent hole; 13, main roller shaft; 131, mounting groove; 132, main clamping groove; 133, positioning hole; 134, first threaded hole; 14, output shaft; 15, connecting shaft; 151 , second threaded hole; 152, spline groove; 16, adjusting shaft; 161, threaded shaft section; 162, spline shaft section; 17, nut plate; 18, guide rod; 19, stop block; 191, first inclined surface; 20, positioning block; 201, positioning groove; 2011, second inclined surface; 21, auxiliary roller shaft; 211, auxiliary clamping groove; 212, connecting hole; 22, connecting screw; 23, connecting rod; 24, mounting screw; 25, fan blade. DETAILED DESCRIPTION

[0035] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0036] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0037] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0038] Example 1

[0039] like Figure 1- Figure 6 As shown, an easy-to-assemble permanent magnet motor comprises a casing 1, a front end cover 2, a stator housing 3, a bottom plate 5, a terminal box 6, a stator winding 7, a rotor structure 8, a rear end cover 10 and a wind shield 12. The two ends of the casing 1 are detachably connected with the front end cover 2 and the rear end cover 10 by screws respectively. The bottom outer wall of the casing 1 is fixedly connected with the bottom plate 5 for supporting and installing the entire motor. The casing 1 is provided with a stator housing 3 inside. The stator housing 3 is annularly installed on the inner wall of the casing 1. The inner wall of the stator housing 3 is evenly distributed with a plurality of stator windings 7 in an annular shape. The top outer wall of the casing 1 is provided with a terminal box 6 used in conjunction with the stator winding 7. The casing 1 is provided with a rotor structure 8 used in conjunction with the stator winding 7. The rotor structure 8 comprises a plurality of permanent magnets 11, an output shaft 14, a connecting shaft 15 and a mounting member. The plurality of permanent magnets 11 are arranged in an annular shape and are detachably connected to the mounting member. The output shaft 14 is fixedly connected to the mounting member. The matching between the permanent magnets 11 and the stator winding 7 is utilized. The output shaft 14 is driven to rotate through the mounting part. A bearing seat 4 is provided on the side of the casing 1 near the front end cover 2. The output shaft 14 is rotatably connected to the bearing seat 4 through a bearing 9, and one end of the output shaft 14 passes through the front end cover 2 and extends outward. The connecting shaft 15 is detachably connected to the mounting part, positioned and docked with the output shaft 14, and cooperates with the mounting part to complete the installation of multiple permanent magnets 11. At the same time, when the mounting part and the output shaft 14 rotate, the connecting shaft 15 can be driven to rotate synchronously. A bearing seat 4 is provided on the side of the casing 1 near the rear end cover 10. The connecting shaft 15 is rotatably connected to the bearing seat 4 through a bearing 9, and one end of the connecting shaft 15 passes through the rear end cover 10 and extends outward. The end of the connecting shaft 15 away from the output shaft 14 is detachably connected with a fan structure. The outer side of the rear end cover 10 is detachably connected with a fan cover 12 through screws, and the fan cover 12 covers the fan structure inside. A plurality of ventilation holes 121 are provided on the side of the fan cover 12 away from the rear end cover 10.

[0040] In one aspect of the present embodiment, the mounting member includes a main roller shaft 13 fixedly mounted on the outer wall of one end of the output shaft 14, and the main roller shaft 13 is located on the inner side of the stator housing 3. The outer wall of the main roller shaft 13 is provided with a plurality of main clamping grooves 132 in a ring shape, and a plurality of permanent magnets 11 are respectively adapted to be clamped in the main clamping grooves 132. A mounting groove 131 is provided on the side of the main roller shaft 13 away from the output shaft 14. One end of the output shaft 14 is located in the mounting groove 131 and is positioned and docked with one end of the connecting shaft 15. A positioning component for simultaneously positioning and installing a plurality of permanent magnets 11 is provided in the mounting groove 131, and the positioning component is adjusted and controlled by the connecting shaft 15. After the multiple permanent magnets 11 are positioned and clamped in the main clamping grooves 132 respectively, the multiple permanent magnets 11 are positioned and installed on the outer surface of the main roller shaft 13 by operating the connecting shaft 15, which can achieve the effect of quick installation and disassembly; the detachable installation method can facilitate the maintenance and replacement of the permanent magnets 11, avoiding the replacement of the entire rotor structure 8, and effectively reducing the subsequent maintenance and replacement costs.

[0041] In one aspect of the present embodiment, the fan structure includes a connecting rod 23, the outer wall of the connecting rod 23 is annularly provided with a plurality of fan blades 25, one end of the connecting rod 23 is integrally formed with a mounting screw 24, a second threaded hole 151 is formed at one end of the connecting shaft 15 away from the output shaft 14, and the mounting screw 24 is threadedly connected in the second threaded hole 151. Through the threaded connection between the mounting screw 24 and the second threaded hole 151, the connecting rod 23 and the connecting shaft 15 can be detachably connected, thereby facilitating the dismantling of the entire fan structure, and facilitating maintenance, cleaning and replacement.

[0042] The present application can be used in the field of permanent magnet motor assembly, and can also be applied to other fields of the present application.

[0043] Example 2

[0044] This embodiment is a further improvement of the previous embodiment: Figure 1 - Fig.11 As shown, the inner side surfaces of the plurality of permanent magnets 11 are fixedly connected with positioning blocks 20, and the bottom walls of the plurality of main clamping slots 132 are provided with positioning holes 133 connected to the mounting slots 131. By correspondingly plugging the positioning blocks 20 into the positioning holes 133 (such as Fig. 9 As shown), the permanent magnet 11 can be positioned and clamped in the main clamping slot 132; in order to prevent the permanent magnet 11 from falling out by itself when clamped in the main clamping slot 132, the friction between the positioning block 20 and the positioning hole 133 can be increased to improve the stability of the pre-clamping of the permanent magnet 11, thereby facilitating subsequent fixed installation.

[0045] In one aspect of this embodiment, the positioning assembly includes a nut plate 17 slidably connected to the interior of the mounting groove 131, and a plurality of stoppers 19 (such as Figure 6 As shown in the figure, a plurality of positioning blocks 20 are provided with positioning grooves 201 for use with the stopper 19 on one side of the installation groove 131. After the permanent magnet 11 is clamped in the main clamping groove 132, the positioning block 20 is inserted into the positioning hole 133 and extends into the installation groove 131, and then the nut plate 17 is moved to drive the plurality of stoppers 19 to move simultaneously, and the plurality of stoppers 19 are respectively inserted into the positioning grooves 201 on the plurality of positioning blocks 20, thereby achieving the effect of simultaneously positioning and installing the plurality of permanent magnets 11; conversely, the fixed installation of the permanent magnet 11 can be released by moving the nut plate 17 in the opposite direction, and the operation is simple and convenient.

[0046] In one aspect of this embodiment, a first inclined surface 191 is provided on one side of the stopper 19 close to the adjustment shaft 16, and a second inclined surface 2011 is provided on one inner wall of the positioning groove 201 to cooperate with the first inclined surface 191. When the stopper 19 extends into the positioning groove 201, the first inclined surface 191 on the stopper 19 can fit and contact with the second inclined surface 2011 in the positioning groove 201, which can effectively increase the contact tightness between the stopper 19 and the positioning block 20, thereby improving the positioning and installation strength of the permanent magnet 11.

[0047] Example 3

[0048] This embodiment is a further improvement of the previous embodiment: Figure 1 - Fig.11 As shown, an adjusting shaft 16 is slidably embedded at one end of the connecting shaft 15, and one end of the adjusting shaft 16 extends outward and is rotatably connected to one end of the output shaft 14 located inside the mounting groove 131, and the nut plate 17 is threadedly sleeved on the adjusting shaft 16. Rotating the connecting shaft 15 can drive the adjusting shaft 16 to rotate, and then drive the nut plate 17 to slide back and forth inside the mounting groove 131, thereby completing the positioning and installation of the permanent magnet 11.

[0049] In one aspect of the present embodiment, the adjusting shaft 16 includes a threaded shaft section 161 and a spline shaft section 162 which are integrally connected, one end of the output shaft 14 is rotatably connected to one end of the threaded shaft section 161, a nut plate 17 is threadedly sleeved on the outer wall of the threaded shaft section 161, and one end of the connecting shaft 15 is provided with a spline groove 152 which is slidably connected to the spline shaft section 162. Through the spline connection between the connecting shaft 15 and the spline shaft section 162, not only can the spline shaft section 162 be rotated by rotating the connecting shaft 15, thereby driving the threaded shaft section 161 to rotate and realizing the movement of the nut plate 17, but also the connecting shaft 15 can be easily removed from the spline shaft section 162 for easy disassembly.

[0050] Example 4

[0051] This embodiment is a further improvement of the previous embodiment: Figure 1 - Fig.11 As shown, an auxiliary roller shaft 21 is rotatably sleeved on the outer wall of one end of the connecting shaft 15 close to the output shaft 14, and the cross section of the auxiliary roller shaft 21 is consistent with that of the main roller shaft 13. The outer wall of the auxiliary roller shaft 21 is annularly and equidistantly provided with a plurality of auxiliary clamping grooves 211 corresponding to the main clamping grooves 132, and one side of the permanent magnet 11 is adapted to be clamped in the auxiliary clamping groove 211, and a plurality of connecting holes 212 are annularly provided on one side of the auxiliary roller shaft 21, and connecting screws 22 are penetrated in the plurality of connecting holes 212, and a plurality of first threaded holes 134 corresponding to the connecting holes 212 are provided on one side of the main roller shaft 13, and the connecting screws 22 are threadedly connected in the first threaded holes 134, for detachable connection between the main roller shaft 13 and the auxiliary roller shaft 21. By connecting the main roller shaft 13 with the auxiliary roller shaft 21, the installation groove 131 can be closed, and when the main roller shaft 13 and the auxiliary roller shaft 21 are fitted and docked, the connecting shaft 15 can be slidably sleeved on the spline shaft section 162 through the spline groove 152; when docking, the connecting shaft 15 and the spline shaft section 162 can be docked first, and after sliding and docking them, the auxiliary roller shaft 21 can be rotated to make the connecting hole 212 correspond to the first threaded hole 134, and fixed by the connecting screw 22. By closing the installation groove 131, the positioning assembly for positioning and installing the permanent magnet 11 can be in a closed state, and the clamping can be completed inside the main roller shaft 13, and the operating part is located on the outside, which is convenient for operation and subsequent disassembly and maintenance, and improves the flexibility of the overall assembly.

[0052] Example 5

[0053] This embodiment is a further improvement of the previous embodiment: Figure 1 - Fig.11 As shown, a plurality of guide rods 18 are fixedly connected to one side of the secondary roller shaft 21 close to the main roller shaft 13 in an annular shape and at equal intervals, and the plurality of guide rods 18 all slide through one side of the nut plate 17. When the main roller shaft 13 and the secondary roller shaft 21 are docked and installed, the plurality of guide rods 18 can extend into the interior of the installation groove 131 and pass through the nut plate 17, and can play a role of sliding guide during the movement of the nut plate 17, thereby improving the stability of the movement of the nut plate 17, thereby improving the accuracy of the positioning and installation of the permanent magnet 11.

[0054] Working principle: first, the main roller shaft 13 and the auxiliary roller shaft 21 are connected by the connecting screws 22, and the connecting shaft 15 is slidably mounted on the spline shaft section 162 through the spline groove 152, and multiple guide rods 18 pass through the nut plate 17 at the same time; then, through the positioning block 20 and the positioning hole 133, the permanent magnet 11 is simultaneously clamped in the main clamping groove 132 and the auxiliary clamping groove 211 to complete the pre-installation; then manually rotate the connecting shaft 15 to drive the spline shaft section 162 to rotate, and at the same time drive the threaded shaft section 161 to rotate, and drive the nut plate 17 to move, and then drive the block 19 to move into the positioning groove 201, so that the first inclined surface 191 is tightly in contact with the second inclined surface 2011, thereby completing the positioning and installation of the permanent magnet 11. After the tight contact between the stop block 19 and the positioning block 20, the nut plate 17 cannot move further, that is, the threaded shaft section 161 cannot rotate further, that is, the staff cannot rotate the connecting shaft 15 (rotating the connecting shaft 15 in the reverse direction is to release the installation of the permanent magnet 11, which can be rotated in the reverse direction, but cannot be rotated in the forward direction); after completing the installation of the permanent magnet 11, the entire permanent magnet motor is assembled (the assembly of its housing, stator, rotor, end cover and other components belongs to conventional assembly technology, which will not be described here), after assembly, it is connected to the external power supply through the junction box 6, and the stator winding 7 is energized, and through the The magnetic cooperation between the permanent magnets 11 drives the main roller 13 and the auxiliary roller 21 to rotate at the same time, and the rotation direction of the main roller 13 and the auxiliary roller 21 is opposite to the rotation direction of the connecting shaft 15 to fix the permanent magnet 11. That is to say, when the main roller 13 and the auxiliary roller 21 are powered on and rotated, it can not only drive the output shaft 14 to rotate stably, but also drive the connecting shaft 15 to rotate stably. The connecting shaft 15 is connected to the fan structure. Therefore, the connecting shaft 15 can drive the fan blades 25 to rotate stably, and will not cause the permanent magnet 11 to loosen during rotation. The entire connection has good stability. When the permanent magnet 11 needs to be removed, repaired or replaced, it is only necessary to remove the wind cover 12 first, and then rotate the connecting shaft 15 to complete the removal of the permanent magnet 11; if the components inside the mounting groove 131 need to be repaired or replaced, remove the connecting screws 22 and take out the secondary roller shaft 21; if the fan blades 25 need to be cleaned or replaced, first remove the wind cover 12, and then rotate the connecting rod 23 to disengage the mounting screw 24 from the threaded connection with the second threaded hole 151, and the entire fan structure can be removed.

[0055] However, as is well known to those skilled in the art, the working principle and wiring method of the stator winding 7 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art may make any selections according to their needs or convenience.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. An easily assembled permanent magnet motor, comprising a casing (1), wherein two ends of the casing (1) are detachably connected to a front cover (2) and a rear cover (10) by screws, respectively; a bottom outer wall of the casing (1) is fixedly connected to a bottom plate (5) for supporting and mounting the entire motor; a stator housing (3) is arranged inside the casing (1); the stator housing (3) is annularly mounted on the inner wall of the casing (1); a plurality of stator windings (7) are evenly distributed on the inner wall of the stator housing (3) in an annular shape; a terminal box (6) for use with the stator winding (7) is arranged on the top outer wall of the casing (1); a rotor structure (8) for use with the stator winding (7) is arranged inside the casing (1), and the characteristics are as follows: The rotor structure (8) comprises a mounting member and a plurality of permanent magnets (11), wherein the plurality of permanent magnets (11) are arranged in a ring shape and are detachably connected to the mounting member. The rotor structure (8) further comprises: An output shaft (14) is fixedly connected to the mounting member, and the output shaft (14) is driven to rotate through the mounting member by the cooperation between the permanent magnet (11) and the stator winding (7); a bearing seat (4) is provided on a side of the housing (1) close to the front end cover (2); the output shaft (14) is rotatably connected to the bearing seat (4) through a bearing (9), and one end of the output shaft (14) passes through the front end cover (2) and extends outward; The connecting shaft (15) is detachably connected to the mounting member, is positioned and docked with the output shaft (14), and cooperates with the mounting member to complete the installation of the plurality of permanent magnets (11). When the mounting member and the output shaft (14) rotate, the connecting shaft (15) can be driven to rotate synchronously. A bearing seat (4) is provided on one side of the housing (1) near the rear end cover (10). The connecting shaft (15) is rotatably connected to the bearing seat (4) via a bearing (9), and one end of the connecting shaft (15) passes through the rear end cover (10) and extends outward. The end of the connecting shaft (15) away from the output shaft (14) is detachably connected to a fan structure, the outer side surface of the rear end cover (10) is detachably connected to a wind shield (12) via screws, and the wind shield (12) covers the fan structure inside, and a plurality of ventilation holes (121) are provided on a side of the wind shield (12) away from the rear end cover (10); The mounting member comprises a main roller shaft (13) fixedly sleeved on the outer wall of one end of the output shaft (14), the main roller shaft (13) being located on the inner side of the stator housing (3), the outer wall of the main roller shaft (13) being provided with a plurality of main clamping notches (132) in an annular shape, and the plurality of permanent magnets (11) being respectively adapted to be clamped in the main clamping notches (132); A mounting groove (131) is provided on a side of the main roller shaft (13) away from the output shaft (14); one end of the output shaft (14) is located in the mounting groove (131) and is positioned and docked with one end of the connecting shaft (15); a positioning assembly for simultaneously positioning and mounting a plurality of permanent magnets (11) is provided in the mounting groove (131), and the positioning assembly is adjusted and controlled by the connecting shaft (15); The inner side surfaces of the plurality of permanent magnets (11) are all fixedly connected with positioning blocks (20), and the bottom walls of the plurality of main clamping slots (132) are all provided with positioning holes (133) that are in communication with the mounting slots (131); The positioning assembly comprises a nut plate (17) slidably connected to the inside of the installation groove (131); a plurality of stoppers (19) are fixedly connected in an annular shape and equidistantly to one side of the nut plate (17) away from the opening of the installation groove (131); and a plurality of positioning blocks (20) are each provided with a positioning groove (201) for use with the stoppers (19) on one side of the plurality of positioning blocks (20) located inside the installation groove (131); An adjusting shaft (16) is slidably embedded in one end of the connecting shaft (15), one end of the adjusting shaft (16) extends outward and is rotatably connected to one end of the output shaft (14) located inside the mounting groove (131), and a nut plate (17) is threadedly sleeved on the adjusting shaft (16).

2. An easily assembled permanent magnet motor as claimed in claim 1, characterized in that: The adjusting shaft (16) comprises a threaded shaft section (161) and a spline shaft section (162) which are integrally connected, one end of the output shaft (14) is rotatably connected to one end of the threaded shaft section (161), a nut plate (17) is threadably sleeved on an outer wall of the threaded shaft section (161), and one end of the connecting shaft (15) is provided with a spline groove (152) which is slidably connected to the spline shaft section (162).

3. An easily assembled permanent magnet motor as claimed in claim 2, characterized in that: A first inclined surface (191) is provided on one side of the stop block (19) close to the adjustment shaft (16), and a second inclined surface (2011) used in conjunction with the first inclined surface (191) is provided on an inner wall of one side of the positioning groove (201).

4. An easily assembled permanent magnet motor as claimed in claim 3, characterized in that: An auxiliary roller shaft (21) is rotatably sleeved on the outer wall of one end of the connecting shaft (15) close to the output shaft (14); the auxiliary roller shaft (21) has the same cross section as the main roller shaft (13); the outer wall of the auxiliary roller shaft (21) is provided with a plurality of auxiliary clamping notches (211) in an annular shape and equidistantly corresponding to the main clamping notches (132); one side of the permanent magnet (11) is adapted to be clamped in the auxiliary clamping notches (211); one side of the auxiliary roller shaft (21) is provided with a plurality of connecting holes (212) in an annular shape; connecting screws (22) are inserted into the plurality of connecting holes (212); one side of the main roller shaft (13) is provided with a plurality of first threaded holes (134) corresponding to the connecting holes (212); and the connecting screws (22) are threadedly connected in the first threaded holes (134) for detachable connection between the main roller shaft (13) and the auxiliary roller shaft (21).

5. An easily assembled permanent magnet motor as claimed in claim 4, characterized in that: A plurality of guide rods (18) are fixedly connected in an annular shape and equidistantly to one side of the secondary roller shaft (21) close to the main roller shaft (13), and the plurality of guide rods (18) all slide through one side of the nut plate (17).

6. The easy-to-assemble permanent magnet motor according to claim 1, characterized in that: The fan structure comprises a connecting rod (23), the outer wall of the connecting rod (23) being provided with a plurality of fan blades (25) in an annular shape, one end of the connecting rod (23) being integrally formed with a mounting screw (24), one end of the connecting shaft (15) being away from the output shaft (14) being provided with a second threaded hole (151), and the mounting screw (24) being threadedly connected in the second threaded hole (151).

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