Double-winding variable frequency speed regulation three-phase asynchronous motor

Abstract

The utility model discloses a double-winding variable frequency speed regulation three-phase asynchronous motor, which relates to the technical field of three-phase asynchronous motors and comprises a three-phase asynchronous motor body, the three-phase asynchronous motor body comprises a casing, one end of the casing is fixedly provided with a mounting frame, and a heat dissipation fan is arranged in the mounting frame. Limiting assemblies are symmetrically mounted in the two sides of the mounting frame, when the cooling fan needs to be overhauled and cleaned, two positioning plug pins of each limiting assembly are pulled out of two fixing sleeves through push-pull buckles under the cooperation of sliding parts and reset springs in the two limiting assemblies, the two fixing sleeves are taken down from the surfaces of two clamping rings, and then the cooling fan is overhauled and cleaned. And the two clamping rings installed on one side of the protective cover are taken out from the two clamping grooves, so that the disassembly of the protective cover can be completed, and the problems that the protective cover is limited and fixed through a bolt fixing mode in an existing three-phase asynchronous motor, the protective cover is inconvenient to disassemble, and a cooling fan is inconvenient to overhaul and clean are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of three-phase asynchronous motors, in particular to a double-winding variable-frequency speed-regulating three-phase asynchronous motor. Background Art

[0002] Compared with single-phase asynchronous motors, three-phase asynchronous motors have good operating performance and can save various materials. The speed of the rotor of the three-phase asynchronous motor is lower than the speed of the rotating magnetic field. The rotor winding generates electromotive force and current due to the relative motion between the rotor winding and the magnetic field, and interacts with the magnetic field to generate electromagnetic torque to achieve energy conversion.

[0003] However, the protective cover used to protect the cooling fan on one side of the existing three-phase asynchronous motor is mostly fixed in a limited position by bolts. When the cooling fan needs to be inspected and cleaned, it is inconvenient to remove the protective cover, which affects the operation of the three-phase asynchronous motor. Secondly, when the protective cover is fixed only by bolts, the protective cover is easy to loosen over time, the protective effect is reduced, and safety hazards are easy to occur. In view of the above problems, the inventor proposes a dual-winding variable frequency speed regulation three-phase asynchronous motor to solve the above problems. Utility Model Content

[0004] In order to solve the problem that the protective cover used to protect the cooling fan on one side of the existing three-phase asynchronous motor is mostly fixed by bolts, and when the cooling fan needs to be inspected and cleaned, it is inconvenient to remove the protective cover, which affects the operation of the three-phase asynchronous motor; the purpose of the utility model is to provide a dual-winding variable frequency speed regulation three-phase asynchronous motor.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a dual-winding variable-frequency speed-regulating three-phase asynchronous motor, comprising a three-phase asynchronous motor body, the three-phase asynchronous motor body comprising a casing, a mounting frame fixedly mounted on one end of the casing, a heat dissipation fan mounted in the mounting frame, a protective cover detachably mounted on one side of the mounting frame, a clamping ring symmetrically mounted on one side of the protective cover, the number of the clamping rings being two, a clamping groove symmetrically opened on one side of the mounting frame, the number of the clamping grooves being two, two clamping rings are respectively slidably clamped in the two clamping grooves, the surfaces of the two clamping rings are detachably sleeved with fixed sleeves, the number of the fixed sleeves being two, limiting components are symmetrically mounted on both sides of the mounting frame, the number of the limiting components being two, the limiting components comprising a sliding member, a positioning pin symmetrically mounted on one side of the sliding member, the number of the positioning pins being two, a reset spring symmetrically mounted on one side of the sliding member away from the positioning pin, the two positioning pins are respectively slidably inserted in one side of the two fixed sleeves through the sliding member and the reset spring, a push-pull buckle is fixedly mounted on one side of the sliding member, and the fixed sleeve and the limiting component cooperate with each other;

[0006] The heat dissipation fan is installed through an installation frame installed at one end of the casing, and the protective cover is fixed on one side of the installation frame through two fixing sleeves cooperating with the two limiting assemblies installed on both sides of the installation frame. The heat dissipation fan is protected by the protective cover. When the heat dissipation fan needs to be inspected and cleaned, with the cooperation of the sliding parts and the reset springs in the two limiting assemblies, the two positioning pins of each limiting assembly are pulled out from the two fixing sleeves respectively through the push-pull buckle, the two fixing sleeves are removed from the surfaces of the two clamping rings, and the two clamping rings installed on one side of the protective cover are taken out from the two clamping grooves to complete the removal of the protective cover. Through the above operation, it is convenient to disassemble and assemble the protective cover used to protect the heat dissipation fan on one side of the three-phase asynchronous motor body, which solves the problem that the protective cover of the existing three-phase asynchronous motor body is fixed by bolts, which is not convenient to disassemble and inspect and clean the heat dissipation fan.

[0007] Preferably, a positioning ring is fixedly installed in one side of the two fixing sleeves, and a positioning groove is opened on one side of the two clamping rings. The positioning ring is slidably clamped in the positioning groove, and the positioning ring and the positioning groove cooperate with each other. When the protective cover with the limit is fixed by the two fixing sleeves, the positioning rings respectively installed on one side of the two fixing sleeves are clamped into the positioning grooves opened on one side of the two clamping rings to complete the limiting of the two fixing sleeves, which is convenient for fixing the two fixing sleeves of the two limiting assemblies. At the same time, with the cooperation of the two positioning rings and the two positioning grooves, the stability of the protective cover after installation is increased.

[0008] Preferably, buckles are fixedly installed at both ends of the two clamping rings, and slots are symmetrically opened on both sides of the installation frame on the two card slots. The buckles are slidably inserted in the slots, and the buckles and the slots cooperate with each other. When the protective cover is installed through the two clamping rings, the two clamping rings are clamped in the two card slots, and the two buckles installed at both ends of each clamping ring are respectively inserted into the corresponding slots. With the cooperation of the buckles and the slots, the two clamping rings are limited in the card slots, and the stability of the protective cover after installation is increased. Positioning holes are symmetrically opened on one side of the two fixing sleeves, and the positioning pins slide The movable plug is arranged in the positioning hole, and the positioning hole cooperates with the positioning pin. The positioning pin is inserted in the fixed sleeve through the positioning hole. One side of the protective cover is provided with evenly distributed heat dissipation holes, and the heat dissipation holes cooperate with the heat dissipation fan. The heat dissipation holes opened on one side of the protective cover cooperate with the heat dissipation fan to dissipate heat inside the three-phase asynchronous motor body. Push-pull grooves are symmetrically opened on both sides of the surface of the installation frame. There are two push-pull grooves. The push-pull buckle is slidably installed in the push-pull groove. The push-pull buckle is assisted by the push-pull groove to control the sliding part to slide, and the push-pull buckle is protected by the push-pull groove.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] 1. In the utility model, when the heat dissipation fan needs to be inspected and cleaned, the two positioning pins of each limit assembly are respectively pulled out from the two fixing sleeves through the push-pull buckle under the cooperation of the sliding parts and the reset springs in the two limit assemblies, and the two fixing sleeves are removed from the surfaces of the two clamping rings. After the two clamping rings installed on one side of the protective cover are taken out from the two clamping grooves, the protective cover can be disassembled, which solves the problem that the existing three-phase asynchronous motor uses bolts to fix the protective cover, which is not convenient to disassemble and inspect the heat dissipation fan;

[0011] 2. In the utility model, the heat dissipation fan is installed through the installation frame installed at one end of the casing, and the protective cover is fixed on one side of the installation frame through two fixing sleeves cooperating with the two limiting components installed on both sides of the installation frame. The heat dissipation fan is protected by the protective cover, and the positioning rings respectively installed on one side of the two fixing sleeves are clamped into the positioning grooves opened on one side of the two clamping rings to complete the limiting of the two fixing sleeves, thereby increasing the stability of the protective cover after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 This is a schematic diagram of the structure of the three-phase asynchronous motor body of the utility model.

[0014] Figure 2 This is a schematic diagram of the exploded structure of the three-phase asynchronous motor body of the utility model.

[0015] Figure 3 For this utility model Figure 2 A magnified view of the structure at center.

[0016] Figure 4 This is a schematic diagram of the structure of the installation frame and the fixing sleeve of the utility model.

[0017] Figure 5 For this utility model Figure 4 The enlarged view of the structure at B in the middle.

[0018] Figure 6 This is a schematic diagram of the protective cover structure of the utility model.

[0019] In the figure: 1. three-phase asynchronous motor body; 2. housing; 21. cooling fan; 3. mounting frame; 31. slot; 32. slot; 4. protective cover; 41. snap ring; 42. positioning slot; 43. buckle; 44. cooling hole; 5. fixing sleeve; 51. positioning ring; 52. positioning hole; 6. limit assembly; 61. sliding part; 62. positioning latch; 63. reset spring; 64. push-pull buckle; 641. push-pull slot. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example: Figure 1-6 As shown, the utility model provides a dual-winding variable frequency speed regulating three-phase asynchronous motor, including a three-phase asynchronous motor body 1, the three-phase asynchronous motor body 1 includes a casing 2, one end of the casing 2 is fixedly mounted with a mounting frame 3, a heat dissipation fan 21 is mounted in the mounting frame 3, a protective cover 4 is detachably mounted on one side of the mounting frame 3, a snap ring 41 is symmetrically mounted on one side of the protective cover 4, the number of the snap rings 41 is two, one side of the mounting frame 3 is symmetrically provided with a card slot 31, the number of the card slot 31 is two, the two snap rings 41 are respectively slidably mounted in the two card slots 31, and the surfaces of the two snap rings 41 are detachably sleeved with Fixed sleeve 5, the number of fixed sleeve 5 is two, the limiting components 6 are symmetrically installed in both sides of the installation frame 3, the number of limiting components 6 is two, the limiting component 6 includes a sliding member 61, one side of the sliding member 61 is symmetrically installed with a positioning latch 62, the number of the positioning latch 62 is two, the side of the sliding member 61 away from the positioning latch 62 is symmetrically installed with a return spring 63, the two positioning latches 62 are respectively slidably inserted in one side of the two fixed sleeves 5 through the sliding member 61 and the return spring 63, a push-pull buckle 64 is fixedly installed on one side of the sliding member 61, and the fixed sleeve 5 and the limiting component 6 cooperate with each other;

[0022] The heat dissipation fan 21 is installed through the installation frame 3 installed at one end of the casing 2, and the protective cover 4 is fixed on one side of the installation frame 3 through two fixing sleeves 5 and two limiting components 6 installed on both sides of the installation frame 3. The heat dissipation fan 21 is protected by the protective cover 4. When the heat dissipation fan 21 needs to be inspected and cleaned, with the cooperation of the sliding parts 61 and the reset spring 63 in the two limiting components 6, the two positioning pins 62 of each limiting component 6 are respectively pulled out from the two fixing sleeves 5 through the push-pull buckle 64, and the two fixing sleeves 5 are removed from the surfaces of the two snap rings 41. The two snap rings 41 installed on one side of the protective cover 4 are taken out from the two card grooves 31, and the removal of the protective cover 4 can be completed. Through the above operation, it is convenient to disassemble and assemble the protective cover 4 used to protect the heat dissipation fan 21 on one side of the three-phase asynchronous motor body 1, which solves the problem that the existing three-phase asynchronous motor body 1 fixes the protective cover 4 by bolts, which is not convenient to disassemble and inspect and clean the heat dissipation fan 21.

[0023] A positioning ring 51 is fixedly installed in one side of the two fixing sleeves 5, and a positioning groove 42 is opened on one side of the two clamping rings 41. The positioning ring 51 is slidably clamped in the positioning groove 42, and the positioning ring 51 and the positioning groove 42 cooperate with each other;

[0024] By adopting the above technical solution, when the protective cover 4 that has been limited is fixed by the two fixing sleeves 5, the positioning rings 51 installed on one side of the two fixing sleeves 5 are clamped into the positioning grooves 42 opened on one side of the two clamping rings 41 to complete the limitation of the two fixing sleeves 5, which is convenient for the two limiting components 6 to fix the two fixing sleeves 5. At the same time, with the cooperation of the two positioning rings 51 and the two positioning grooves 42, the stability of the protective cover 4 after installation is increased.

[0025] Buckles 43 are fixedly installed at both ends of the two clamping rings 41. Slots 32 are symmetrically opened on both sides of the two clamping slots 31 of the installation frame 3. The buckles 43 are slidably inserted in the slots 32. The buckles 43 and the slots 32 cooperate with each other.

[0026] By adopting the above technical solution, when the protective cover 4 is installed through the two snap rings 41, the two snap rings 41 are snapped into the two slots 31, and the two buckles 43 installed at both ends of each snap ring 41 are respectively inserted into the corresponding slots 32. With the cooperation of the buckles 43 and the slots 32, the two snap rings 41 are limited in the slots 31, and the stability of the protective cover 4 after installation is increased.

[0027] One side of the two fixing sleeves 5 is symmetrically provided with positioning holes 52, and the positioning pins 62 are slidably inserted in the positioning holes 52, and the positioning holes 52 and the positioning pins 62 cooperate with each other;

[0028] By adopting the above technical solution, the positioning pin 62 is inserted into the fixing sleeve 5 through the positioning hole 52 .

[0029] One side of the protective cover 4 is provided with evenly distributed heat dissipation holes 44, and the heat dissipation holes 44 cooperate with the heat dissipation fan 21;

[0030] By adopting the above technical solution, the heat dissipation hole 44 opened on one side of the protective cover 4 cooperates with the heat dissipation fan 21 to perform heat dissipation treatment on the inside of the three-phase asynchronous motor body 1 .

[0031] The surface of the installation frame 3 is symmetrically provided with push-pull grooves 641, and the number of the push-pull grooves 641 is two, and the push-pull buckle 64 is slidably installed in the push-pull grooves 641;

[0032] By adopting the above technical solution, the push-pull buckle 64 is assisted by the push-pull groove 641 to control the sliding of the sliding member 61 , and the push-pull buckle 64 is protected by the push-pull groove 641 at the same time.

[0033] Working principle: The heat dissipation fan 21 is installed through the installation frame 3 installed at one end of the casing 2, and the protective cover 4 is fixed on one side of the installation frame 3 through two fixing sleeves 5 cooperating with the two limiting components 6 installed on both sides of the installation frame 3. The heat dissipation fan 21 is protected by the protective cover 4. When the heat dissipation fan 21 needs to be inspected and cleaned, with the cooperation of the sliding parts 61 and the reset spring 63 in the two limiting components 6, the two positioning pins 62 of each limiting component 6 are pulled out from the two fixing sleeves 5 respectively through the push-pull buckle 64, the two fixing sleeves 5 are removed from the surfaces of the two snap rings 41, and the two snap rings 41 installed on one side of the protective cover 4 are taken out from the two card grooves 31, and the removal of the protective cover 4 can be completed.

[0034] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A dual-winding variable frequency speed regulating three-phase asynchronous motor, comprising a three-phase asynchronous motor body (1), characterized in that: The three-phase asynchronous motor body (1) comprises a casing (2), a mounting frame (3) is fixedly mounted on one end of the casing (2), a heat dissipation fan (21) is mounted in the mounting frame (3), a protective cover (4) is detachably mounted on one side of the mounting frame (3), a clamping ring (41) is symmetrically mounted on one side of the protective cover (4), the number of the clamping rings (41) is two, a clamping groove (31) is symmetrically opened on one side of the mounting frame (3), the number of the clamping grooves (31) is two, and the two clamping rings (41) are respectively slidably clamped in the two clamping grooves (31); The surfaces of the two clamping rings (41) are detachably sleeved with fixing sleeves (5), and the number of the fixing sleeves (5) is two. The limiting components (6) are symmetrically installed on both sides of the installation frame (3), and the number of the limiting components (6) is two. The limiting component (6) comprises a sliding member (61), and a positioning pin (62) is symmetrically installed on one side of the sliding member (61), and the number of the positioning pins (62) is two. A return spring (63) is symmetrically installed on the side of the sliding member (61) away from the positioning pin (62). The two positioning pins (62) are respectively slidably inserted into one side of the two fixing sleeves (5) through the sliding member (61) and the return spring (63), and a push-pull buckle (64) is fixedly installed on one side of the sliding member (61). The fixing sleeve (5) and the limiting component (6) cooperate with each other.

2. A dual-winding variable-frequency speed-regulating three-phase asynchronous motor as claimed in claim 1, characterized in that: A positioning ring (51) is fixedly installed in one side of the two fixing sleeves (5), and a positioning groove (42) is opened in one side of the two clamping rings (41). The positioning ring (51) is slidably clamped in the positioning groove (42), and the positioning ring (51) and the positioning groove (42) cooperate with each other.

3. A dual-winding variable-frequency speed-regulating three-phase asynchronous motor as claimed in claim 1, characterized in that: Buckles (43) are fixedly mounted at both ends of the two clamping rings (41); slots (32) are symmetrically provided on both sides of the two clamping grooves (31) of the installation frame (3); the buckles (43) are slidably inserted in the slots (32); and the buckles (43) and the slots (32) cooperate with each other.

4. A dual-winding variable-frequency speed-regulating three-phase asynchronous motor as claimed in claim 1, characterized in that: One side of the two fixing sleeves (5) is symmetrically provided with positioning holes (52), the positioning pins (62) are slidably inserted in the positioning holes (52), and the positioning holes (52) and the positioning pins (62) cooperate with each other.

5. A dual-winding variable-frequency speed-regulating three-phase asynchronous motor as claimed in claim 1, characterized in that: One side of the protective cover (4) is provided with evenly distributed heat dissipation holes (44), and the heat dissipation holes (44) cooperate with the heat dissipation fan (21).

6. A dual-winding variable-frequency speed-regulating three-phase asynchronous motor as claimed in claim 1, characterized in that: Push-pull grooves (641) are symmetrically provided on both sides of the surface of the installation frame (3), the number of the push-pull grooves (641) is two, and the push-pull buckle (64) is slidably installed in the push-pull grooves (641).

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