Power-adjustable disc type permanent magnet motor structure

Abstract

The utility model relates to a power-adjustable disc type permanent magnet motor structure, and relates to the technical field of permanent magnet motors, the power-adjustable disc type permanent magnet motor structure comprises a motor shell, stators arranged in the shell and a rotor rotationally arranged on the shell, the number of the stators is multiple, the multiple stators are sequentially arranged in the length direction of the motor shell, and the adjacent stators are attached to each other; the stator, the rotor and the motor shell are coaxially arranged, a step-shaped positioning block is arranged in the motor shell, the stator located on the innermost side of the motor shell is attached to the positioning block, one side of the motor shell is open, and the open end of the motor shell is movably covered with an end cover. A fixing assembly used for enabling the multiple stators to be stably located in the motor shell is arranged in the motor shell, and an installation piece used for enabling the end cover and the motor shell to be stably connected is further arranged on the motor shell. According to the invention, the output power of the permanent magnet motor can be conveniently adjusted, and the adjustment limit of the frequency converter and the pwm can be solved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of permanent magnet motors, in particular to a power-adjustable disc type permanent magnet motor structure. BACKGROUND

[0002] At present, a permanent magnet motor provides excitation by using a permanent magnet, so that the motor structure is relatively simple, the machining and assembly costs are reduced, the collector ring and the brush prone to problems are omitted, and the reliability of the motor operation is improved. With the continuous improvement of the performance of permanent magnet materials and the development of motor technology, the permanent magnet motor has been widely applied in various fields of the national economy.

[0003] Since the components of the permanent magnet motor may be periodically maintained or replaced due to wear, aging or failure during operation, a permanent magnet motor convenient to maintain disclosed in a Chinese patent document with the publication number CN220325396U comprises a body, a rear end of the body is provided with a rear end cover, the upper end face front end and the lower section front end middle part of the rear end cover are fixedly connected with clamping blocks, the upper end and the lower end middle part of the inner wall of the rear end of the body are provided with sliding rails, and the clamping blocks are slidably connected in the sliding rails. The middle part of the body is provided with a rotating shaft, the front end of the rotating shaft penetrates the body to the outside, the outer part of the shaft body of the rotating shaft is sleeved with a rotor iron core, a plurality of installation grooves are formed in the rotor iron core close to the boundary, a magnetic steel is arranged in each installation groove, the middle part of the inner wall of the body is provided with a stator iron core, and a plurality of windings are arranged on the end of the stator iron core close to the rotor iron core.

[0004] In view of the related technology in the above, since the output power of the permanent magnet motor is not consistent under different use conditions, the output power adjustment is limited according to the different current intensities when the conventional frequency converter and pwm are used for adjustment, and it is not easy to adjust the output power of the disc type permanent magnet motor when the adjustment limit of the frequency converter and pwm is exceeded. Since the disc type permanent magnet motor is connected in series by a plurality of stator windings in the axial direction, the number of stator windings affects the strength of the axial magnetic field and the size of the load power, thereby affecting the output power of the disc type permanent magnet motor. Therefore, the application provides a power-adjustable disc type permanent magnet motor structure. CONTENT OF THE UTILITY MODEL

[0005] In order to facilitate the adjustment of the output power of the permanent magnet motor and solve the problem of the adjustment limit of the frequency converter and pwm, the application provides a power-adjustable disc type permanent magnet motor structure.

[0006] The power-adjustable disc type permanent magnet motor structure provided by the application adopts the following technical scheme:

[0007] The application discloses a power-adjustable disc type permanent magnet motor structure, which comprises a motor shell, a stator arranged in the shell and a rotor rotatably arranged on the shell, a plurality of stators are arranged in sequence along the length direction of the shell, and adjacent stators are attached to each other, the stator, the rotor and the shell are coaxially arranged, a stepped positioning block is arranged in the motor shell, the stator located at the innermost side of the motor shell is attached to the positioning block, one side of the motor shell is in an open shape, an end cover is arranged on the open end of the motor shell, a fixing assembly for stably arranging the plurality of stators in the motor shell is arranged in the motor shell, and a mounting piece for stably connecting the end cover and the motor shell is further arranged on the motor shell; the fixing assembly comprises a limiting rod arranged on the end cover and a limiting piece for keeping the relative position of adjacent stators constant, limiting holes are arranged on the stators and are communicated with each other, the limiting rod is arranged in sequence and penetrates through the limiting holes, and a pressing piece for pressing the stator close to the opening of the motor shell is further arranged in the motor shell.

[0008] By adopting the technical scheme, the stator is sequentially arranged in the motor shell, the innermost stator is attached to the stepped positioning block, and the adjacent stators are sequentially attached and pressed until all the stators are arranged, then the end cover is arranged on the motor shell, the limiting rod on the end cover is sequentially inserted into the limiting hole on the stator, the limiting rod limits the stator, the outermost stator is pressed by the pressing piece, all the stators are limited and pressed by the pressing piece and the positioning block, thereby realizing stable arrangement of the stator, the end cover is stably arranged on the motor shell by the mounting piece, thereby preventing the limiting rod from rotating and realizing stable arrangement of the stator.

[0009] When the power of the permanent magnet motor needs to be adjusted, the number of the non-magnetic stator close to the end cover needs to be adjusted, thereby adjusting the power of the permanent magnet motor, and the normal operation of the permanent magnet motor and the adjustment of the power limit of the permanent magnet motor are realized, thereby solving the control limit problem of the frequency converter and the pwm controller.

[0010] When the stator needs to be replaced, the end cover is taken out of the motor shell by unlocking the mounting piece, the limiting rod is taken out of the motor shell along with the end cover, thereby realizing unlocking of the stator, the damaged stator is replaced by sequentially taking out the stator, thereby realizing replacement of the damaged stator without replacing all the stators, saving resources and facilitating replacement operation.

[0011] Optionally, the outer circumferential wall of the stator is provided with a locking block, the inner circumferential wall of the motor shell is provided with a locking groove, and the locking block and the locking groove are in sliding fit.

[0012] By adopting the above technical scheme, the locking block and the locking groove are provided, and when the technician needs to install the stator, the stator is stably installed through the limiting of the locking groove and the locking block, so that the stator is not easy to be deflected when being installed in the motor shell, and the stator is not easy to rotate in the motor shell after being installed, thereby improving the stability of the stator installation.

[0013] Optionally, the limiting piece includes a fixed block arranged in the stator in sliding manner, and the inner circumferential wall of the motor shell is provided with a fixed groove, and the fixed block is movably inserted into the fixed groove, and the stator is further provided with an adjusting piece for sliding adjustment of the fixed block.

[0014] By adopting the above technical scheme, when the stator slides into the motor shell under the limiting action of the locking block and the locking groove, the locking block and the locking groove are in sliding fit, that is, there is a certain accommodation capacity between the locking block and the locking groove, and the stability of the stator needs to be ensured after being installed in the motor shell, so that the fixed block is inserted into the fixed groove through the sliding adjustment of the adjusting piece, and the stator and the motor shell are not easy to slide along the axial direction of the motor shell, thereby ensuring the stable installation of the stator.

[0015] Optionally, the adjusting piece includes an adjusting block arranged on the stator, the adjusting block and the fixed block are located on opposite sides of the same stator, the side wall of the stator is provided with an adjusting hole at the corresponding position of the fixed block, the fixed block is elastically arranged in the stator, the end side of the fixed block is inclined, the adjusting block on one stator is movably inserted into the adjusting hole on the adjacent stator, and the end side of the adjusting block is movably abutted against the inclined side of the fixed block.

[0016] By adopting the above technical scheme, when the stator is installed in sequence, the adjusting block on the rear-installed stator is inserted into the adjusting hole when the rear-installed stator abuts against the stator in the motor shell, the adjusting block abuts against the inclined side of the fixed block, thereby driving the fixed block to slide, so that the fixed block is inserted into the fixed groove, thereby realizing the stable installation of the stator, and each installed stator sequentially locks the front-installed stator, thereby realizing the interlocking fixation during the installation of the stator.

[0017] Optionally, a plurality of groups of the adjusting block and the fixed block are uniformly arranged along the circumferential direction of the stator.

[0018] By adopting the technical scheme, the outer peripheral wall of the stator and the inner peripheral wall of the motor shell are locked by the multiple sets of fixing blocks, so that stable rotation limiting of the stator is realized, the adjacent stators are stably locked and stably fitted, the adjacent stators are not prone to deviation, and stable installation of the adjacent stators is realized.

[0019] Optionally, the abutting member comprises an abutting block slidingly arranged in the motor shell, and the abutting block is in movable abutment with the stator side wall near the opening end in the motor shell.

[0020] By adopting the technical scheme, after all the stators are installed in the motor shell, the outermost stator is abutted by the abutting block, so that the stator is not prone to moving towards the direction of the motor.

[0021] Optionally, the mounting member comprises a first ear plate arranged on the end cover, a second ear plate arranged on the motor shell, and a mounting bolt, mounting holes are arranged on the first ear plate and the second ear plate, the free end of the mounting bolt is threadedly assembled into the two mounting holes in sequence, and the large end of the mounting bolt is in abutment and abutment with the side wall of the first ear plate.

[0022] By adopting the technical scheme, when the end cover is installed, the technician threadedly assembles the mounting bolt into the mounting hole, so that the first ear plate and the second ear plate are in abutment and abutment, until the large end of the mounting bolt is in abutment and abutment with the side wall of the first ear plate, and stable installation of the end cover is realized.

[0023] Optionally, the thickness of the second ear plate is greater than the thickness of the first ear plate, one end of the abutting block away from the motor shell is movably arranged in the second ear plate, the one end of the abutting block movably arranged in the second ear plate is in an inclined shape, and the free end of the mounting bolt is in abutment and abutment with the inclined side of the abutting block.

[0024] By adopting the technical scheme, during installation of the end cover by the technician, the technician rotates the mounting bolt, and when the free end of the mounting bolt is threadedly screwed into the second ear plate, the free end is in abutment and abutment with the inclined side of the abutting block, so that the abutting block moves towards the direction of the motor shell, and the outer side wall of the stator is in abutment and abutment with the abutting block, limiting of all the stators is realized, and the stators are not prone to shaking and falling off during normal movement of the motor.

[0025] In summary, the present application has at least one of the following beneficial technical effects:

[0026] 1. Through the setting of a plurality of sequentially installed stators, the limiting rod arranged on the end cover and the abutting member arranged in the motor shell, the number of non-magnetic stators is adjusted by the technician, the magnetic field in the permanent magnet motor is adjusted, thereby realizing the power adjustment of the permanent magnet motor, when the stator in the motor needs to be replaced, the technician dismounts the end cover and makes the limiting rod disengage from the motor shell, at this time, the technician only needs to dismount the stator and replace the defective stator or non-magnetic stator, thereby saving resources and reducing the time cost of the technician;

[0027] 2. Through the setting of the locking block and the locking groove, the stator is not easy to deflect during installation, thereby realizing the stable installation of the stator;

[0028] 3. Through the setting of the adjusting block and the fixing block on the opposite sides of a stator, when two adjacent stators are installed, the adjusting block on the rear installed stator abuts against the fixing block on the front stator, thereby making the front stator and the motor shell keep stable positioning, thereby fixing the stators in sequence during the installation of the stators, realizing the interlocking fixation, the operation is simple and the operation of fixing each stator separately is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a whole structure schematic diagram of the embodiment of the application;

[0030] Figure 2 It is an explosion connection structure schematic diagram of the power adjustable disc type permanent magnet motor structure;

[0031] Figure 3 It is an internal connection structure schematic diagram in the embodiment of the application.

[0032] The reference signs are as follows: 1, motor shell; 11, stator; 12, rotor; 13, positioning block; 14, end cover; 2, fixing assembly; 21, limiting rod; 22, limiting hole; 23, locking block; 24, locking groove; 25, limiting member; 251, fixing block; 252, fixing groove; 253, fixing spring; 26, adjusting member; 261, adjusting block; 27, abutting member; 271, abutting block; 272, abutting spring; 3, mounting member; 31, first ear plate; 32, second ear plate; 33, mounting bolt. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings Figures 1-3 The application will be further described in detail.

[0034] The embodiment of the application discloses a power adjustable disc type permanent magnet motor structure. Refer to Figure 1The application discloses a power-adjustable disc type permanent magnet motor structure which comprises a horizontal motor shell 1, a stator 11 coaxially arranged in the motor shell 1, and a rotor 12 coaxially arranged in the stator 11, wherein the rotor 12 is rotationally arranged in the motor shell 1, and a plurality of stators 11 are arranged in sequence along the axial direction of the motor shell 1, and the stator 11 close to an end cover 14 on one side of the plurality of stators 11 is a non-magnetic stator, wherein the non-magnetic stator is one or more of a high-strength polyvinyl chloride stator, an aluminum alloy stator and a non-magnetic stator, the number of the non-magnetic stators is adjusted according to the power requirement of the actual permanent magnet motor, so that the power of the permanent magnet motor is adjusted, and the adjacent stators 11 are mutually attached to each other, one end of the motor shell 1 is in an open state, the motor shell 1 is provided with a stepped positioning block 13, the stator 11 arranged in the motor shell 1 is movably attached to the positioning block 13, the end cover 14 is movably arranged at the open end of the motor shell 1, and the motor shell 1 is further provided with a fixing assembly 2 for stably arranging the stator 11 in the motor shell 1 and a mounting piece 3 for stably connecting the end cover 14 and the motor shell 1.

[0035] With reference to Figure 1 And Figure 2 The fixing assembly 2 comprises a limiting rod 21 fixed to the end cover 14, the limiting rod 21 is consistent with the axial direction of the motor shell 1, a limiting hole 22 is arranged on each of the plurality of positioning blocks 13, the limiting rod 21 is arranged in sequence and penetrates through the plurality of limiting holes 22, and the motor shell 1 is further provided with a pressing piece 27 for limiting the outermost stator 11.

[0036] Further, in order to prevent the stator 11 from being deflected during installation, a locking block 23 is fixedly connected to the outer peripheral wall of each stator 11, a locking groove 24 is arranged on the inner peripheral wall of the motor shell 1, and the locking block 23 and the locking groove 24 are slidably matched. When the technician needs to install the stator 11, the stator 11 is stably installed through the limiting of the locking groove 24 and the locking block 23, so that the stator 11 is not easy to be deflected during installation in the motor shell 1, and the stator 11 is not easy to rotate in the motor shell 1 after installation, thereby improving the stability of the stator 11 installation.

[0037] Since the stator 11 is limited by the limiting rod 21, the locking block 23 and the locking groove 24, the stator 11 is not easy to rotate, but the adjacent stator 11 is not easy to move axially and is not locked, and when the stator 11 slides into the motor housing 1 under the limiting action of the locking block 23 and the locking groove 24, the sliding fit between the locking block 23 and the locking groove 24 is adapted, that is, there is a certain accommodation capacity between the locking block 23 and the locking groove 24, so as to further lock the stator 11, the motor housing 1 is also provided with a limiting piece 25, the limiting piece 25 includes a fixed block 251 slidingly arranged in the stator 11, the sliding direction of the fixed block 251 is consistent with the radial direction of the motor housing 1, and a fixed groove 252 is formed on the inner circumferential wall of the motor housing 1, the fixed block 251 is movably inserted into the fixed groove 252, and in order to facilitate the sliding adjustment of the fixed block 251, the stator 11 is also provided with an adjusting piece 26 for sliding adjustment of the fixed block 251.

[0038] Referring to Figure 2 and Figure 3 , the adjusting piece 26 includes an adjusting block 261 fixed on the stator 11, on the same stator 11, the adjusting block 261 and the fixed block 251 are located on opposite side walls of the stator 11, and the side wall of the stator 11 is provided with an adjusting hole communicating with the inner cavity sliding with the fixed block 251, and the fixed block 251 is fixedly connected with a fixed spring 253, and the fixed spring 253 is used to keep the fixed block 251 and the fixed groove 252 separated.

[0039] And the adjusting block 261 is movably inserted into the adjusting hole, the side of the fixed block 251 corresponding to the adjusting hole is inclined, and the adjusting block 261 and the inclined side of the fixed block 251 are movably attached and abutted, after the adjusting block 261 is inserted into the adjusting hole, the adjusting block 261 abuts against the fixed block 251 to insert the fixed block 251 into the fixed groove 252, thereby realizing stable installation of the stator 11.

[0040] In order to realize stable installation of the stator 11, the fixed block 251 on each stator 11 is provided with a plurality of groups, and the plurality of groups of fixed blocks 251 are uniformly arranged along the circumference direction of the stator 11, and in the application, the fixed block 251 is provided with four groups, and in other embodiments, the skilled in the art can adjust the fixed block 251 to two groups, three groups, five groups, etc. according to the actual size of the motor housing 1, the arrangement mode is consistent with the application, and the number of adjusting blocks 261 is consistent with and corresponds to the number of fixed blocks 251.

[0041] Meanwhile, in order to realize the installation of the end cover 14, the motor shell 1 is further provided with a mounting piece 3, the mounting piece 3 comprises a first lug plate 31 fixed on the end cover 14 and a second lug plate 32 fixed on the motor shell 1, the first lug plate 31 corresponds to the second lug plate 32, the first lug plate 31 and the second lug plate 32 are both provided with mounting holes, the mounting piece 3 is provided with a mounting bolt 33, the free end of the mounting bolt 33 is threaded through the mounting hole of the first lug plate 31 in sequence and is screwed into the mounting hole of the second lug plate 32, and the large end of the mounting bolt 33 abuts against the side wall of the first lug plate 31.

[0042] Meanwhile, in order to realize the limiting of the outermost stator 11, the abutting piece 27 comprises an abutting block 271 slidingly arranged on the motor shell 1, the abutting block 271 is fixedly connected with an abutting spring 272, the abutting spring 272 drives the abutting block 271 to keep relative separation from the stator 11, so as to facilitate the installation of the stator 11, the sliding direction of the abutting block 271 is consistent with the radial direction of the motor shell 1, and in order to realize the automatic limiting of the stator 11 when the end cover 14 is installed, the second lug plate 32 has a relatively large thickness, the end of the abutting block 271 away from the motor shell 1 is movably arranged in the second lug plate 32, and the end of the abutting block 271 in the second lug plate 32 is inclined, the end of the abutting block 271 in the motor shell 1 is movably abutted against the outermost stator 11, and the end of the mounting bolt 33 screwed into the mounting hole of the second lug plate 32 is movably abutted against the inclined side of the abutting block 271, when the technician screws the mounting bolt 33, the mounting bolt 33 abuts against the abutting block 271 to slide, so that the abutting block 271 slides towards the motor shell 1.

[0043] The implementation principle of the power-adjustable disc-type permanent magnet motor structure in the embodiment of the application is as follows: when the technician needs to replace the stator 11, the technician first rotates the mounting bolt 33 to separate the mounting bolt 33 from the first lug plate 31, so as to dismount the end cover 14, in the process of separating the mounting bolt 33 from the first lug plate 31, the abutting block 271 is separated from the outermost stator 11 under the elastic restoring force of the abutting spring 272, when the end cover 14 is dismounted, the limiting rod 21 is extracted, the technician takes out the stators 11 from the motor shell 1 one by one, and then unlocks the stators 11 in the motor shell 1, so as to dismount all the stators 11 in the motor, thereby facilitating the technician to replace or change the non-magnetic stator 11.

[0044] The above are the preferred embodiments of the application, which do not limit the protection scope of the application, therefore: any equivalent changes made on the structure, shape and principle of the application should be covered within the protection scope of the application.

Claims

1. A power adjustable disc type permanent magnet motor structure, characterized in that: The motor shell (1) is provided with a plurality of stators (11), the stator (11) close to the end cover (14) is a non-magnetic stator, the plurality of stators (11) are sequentially arranged along the length direction of the motor shell (1), and the adjacent stators (11) are mutually adhered, the stator (11), the rotor (12) and the motor shell (1) are coaxially arranged, the motor shell (1) is provided with a stepped positioning block (13), the stator (11) located at the innermost side of the motor shell (1) is adhered to the positioning block (13), one side of the motor shell (1) is open, and the opening end of the motor shell (1) is provided with an end cover (14), the motor shell (1) is provided with a fixing assembly (2) for stably arranging the plurality of stators (11) in the motor shell (1), and the motor shell (1) is also provided with a mounting piece (3) for stably connecting the end cover (14) and the motor shell (1). The fixing assembly (2) comprises a limiting rod (21) arranged on the end cover (14) and a limiting piece (25) for keeping the relative position of the adjacent stators (11) constant, the stator (11) is provided with a limiting hole (22), and the limiting holes (22) of the adjacent stators (11) are communicated, the limiting rod (21) is sequentially arranged and penetrates the limiting hole (22), and the motor shell (1) is also provided with a pressing piece (27) for pressing the stator (11) close to the opening of the motor shell (1).

2. A structure of a power adjustable disc type permanent magnet motor according to claim 1, characterized in that: The outer peripheral wall of the stator (11) is provided with a locking block (23), the inner peripheral wall of the motor shell (1) is provided with a locking groove (24), and the locking block (23) and the locking groove (24) are slidably matched.

3. A structure of a power adjustable disc type permanent magnet motor according to claim 2, characterized in that: The limiting piece (25) comprises a fixing block (251) slidably arranged in the stator (11), the inner peripheral wall of the motor shell (1) is provided with a fixing groove (252), the fixing block (251) is movably inserted into the fixing groove (252), and the stator (11) is also provided with an adjusting piece (26) for slidingly adjusting the fixing block (251).

4. A power adjustable disc-type permanent magnet motor structure according to claim 3, characterized in that: The adjusting piece (26) comprises an adjusting block (261) arranged on the stator (11), the adjusting block (261) and the fixing block (251) are located on opposite sides of the same stator (11), the side wall of the stator (11) is provided with an adjusting hole at the corresponding position of the fixing block (251), the fixing block (251) is elastically arranged in the stator (11), the end side of the fixing block (251) is inclined, the adjusting block (261) on one stator (11) is movably inserted into the adjusting hole on the adjacent stator (11), and the end side of the adjusting block (261) is movably adhered and pressed against the inclined side of the fixing block (251).

5. A power adjustable disc-type permanent magnet motor structure according to claim 4, characterized in that: The adjusting blocks (261) and the fixing blocks (251) are provided in multiple groups, and the multiple groups of adjusting blocks (261) and the multiple groups of fixing blocks (251) are uniformly arranged along the circumferential direction of the stator (11).

6. A power adjustable disc-type permanent magnet motor structure according to claim 5, characterized in that: The abutting member (27) comprises an abutting block (271) slidingly arranged on the motor shell (1), and the abutting block (271) is movably abutted against the side wall of the stator (11) close to the opening end in the motor shell (1).

7. A power adjustable disc-type permanent magnet motor structure according to claim 6, characterized in that: The mounting member (3) comprises a first lug plate (31) arranged on the end cover (14), a second lug plate (32) arranged on the motor shell (1), and a mounting bolt (33), the first lug plate (31) and the second lug plate (32) are both provided with mounting holes, the free end of the mounting bolt (33) is threadedly assembled into the two mounting holes in sequence, and the large end of the mounting bolt (33) is abutted against the side wall of the first lug plate (31).

8. A power adjustable disc-type permanent magnet motor structure according to claim 7, characterized in that: The thickness of the second lug plate (32) is greater than that of the first lug plate (31), one end of the abutting block (271) away from the motor shell (1) is movably arranged in the second lug plate (32), and the one end of the abutting block (271) movably arranged in the second lug plate (32) is in an inclined shape, and the free end of the mounting bolt (33) is movably abutted against the inclined side of the abutting block (271).

Images