High-power three-phase asynchronous motor

Abstract

The utility model is suitable for the technical field of three-phase asynchronous motors, and provides a high-power three-phase asynchronous motor, which comprises a shell, a plurality of groups of switch pieces arranged on the inner wall of the shell, a rotating shaft, one end of the rotating shaft rotationally connected with the inner wall of the shell, a switch barrel fixedly connected with the peripheral side surface of the rotating shaft, and a gear fixedly connected with the other end of the rotating shaft, a cavity is formed in the switch barrel, a plurality of filtering holes are formed in the inner wall of the switch barrel, an opening is formed in the side face of the switch barrel, a driving piece is installed in the shell and comprises a connecting block, the connecting block is fixedly connected with the shell, and a lead screw is rotationally connected to the connecting block; when the three-phase asynchronous motor is used, the filtering holes in the outer side of the shell can be opened and closed through the cooperation between the straight plate and the gear, the outer side of the shell can be completely closed during the storage period of the three-phase asynchronous motor, and tiny dust is prevented from entering the interior of the shell through the filtering holes during the storage period.

Description

Technical Field

[0001] The utility model relates to the technical field of three-phase asynchronous motors, and more specifically, to a high-power three-phase asynchronous motor. Background Art

[0002] The three-phase asynchronous motor is a type of induction motor, which is powered by 380V three-phase AC current. Since the rotor and stator rotating magnetic field of the three-phase asynchronous motor rotate in the same direction and at different speeds, there is a slip rate, so it is called a three-phase asynchronous motor. 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] Three-phase asynchronous motors are often used in industrial manufacturing. Existing three-phase asynchronous motors are equipped with a cooling fan at the end when in use, and a filter is added behind the cooling fan to ensure that the cooling fan forms a negative pressure inside the device when the three-phase asynchronous motor is working. When the internal rotor and stator are cooled by the outside air, the outside dust will not enter the motor. When the high-power three-phase asynchronous motor is idle, it needs to be stored. When the dust in the storage place is large, fine dust smaller than the filter holes of the filter will enter the motor through the filter. Long-term accumulation will cause excessive dust in the motor and affect the normal operation of the motor. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a high-power three-phase asynchronous motor that can switch and close the filter holes on the outside of the shell through the cooperation between a straight plate and a gear, and can completely close the outside of the shell during storage of the three-phase asynchronous motor, thereby preventing fine dust from entering the interior of the click through the filter holes during storage.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A high-power three-phase asynchronous motor comprises a shell, wherein the inner wall of the shell is provided with several groups of switch parts, the switch part comprises a rotating shaft, one end of the rotating shaft is rotatably connected to the inner wall of the shell, the peripheral side of the rotating shaft is fixedly connected to a switch barrel, the other end of the rotating shaft is fixedly connected to a gear, the side surface of the gear is rotatably connected to the inner wall of the shell, a cavity is provided in the switch barrel, the inner wall of the switch barrel is provided with several filter holes, the side surface of the switch barrel is provided with an opening, a driving part is installed in the shell, the driving part comprises a connecting block, the connecting block is fixedly connected to the shell; a lead screw is rotatably connected to the connecting block, the other end of the lead screw is fixedly connected to a turntable, two sliding rods are symmetrically slidably connected to the surface of the shell, one end of the two sliding rods are fixedly connected to a rack, the two racks are respectively meshed with corresponding gears, a straight plate is fixedly connected between the two sliding rods, and the straight plate is threadedly connected to the lead screw.

[0007] The utility model is further configured as follows: a stator is fixedly connected to the inner wall of the shell, a transmission shaft is rotatably connected to the axial center of the shell, a rotor matched with the stator is fixedly connected to the circumferential side of the transmission shaft, and a limiting groove is provided at the end of the transmission shaft.

[0008] The utility model is further configured as follows: an insertion rod matched with the limiting groove is inserted at the end of the transmission shaft, a rotating block is fixedly connected to the end of the insertion rod, and a fan is fixedly connected to the rotating block.

[0009] The utility model is further configured as follows: an explosion-proof shell is fixedly connected to the inner wall of the shell, a filter plate is bolted to the inner wall of the explosion-proof shell, a plurality of groups of ash blocking holes are provided on the filter plate, and a vent is provided on the side of the explosion-proof shell.

[0010] The utility model is further configured as follows: a matching block is fixedly connected to the side surface of the filter plate, and the matching block is rotatably connected to the rotating block.

[0011] The utility model is further configured as follows: a plurality of support piles are fixedly connected to the bottom surface of the shell, a bottom plate is fixedly connected between the support piles, two sliding holes are opened on the top of the shell, and the two sliding rods are slidably connected to the corresponding two sliding holes respectively.

[0012] The advantages of the utility model are:

[0013] 1. When the utility model is in use, the screw rod is driven to rotate by rotating the turntable, and the straight plate on the screw rod drives the two racks to move upward, and the filter holes on the outside of the shell can be opened and closed in cooperation with the gears, thereby preventing fine dust from entering the shell through the filter holes during storage and causing damage to the motor.

[0014] 2. When the utility model is in use, the bolts between the filter plate and the explosion-proof shell can be removed during installation and disassembly through the cooperation between the insertion rod and the matching groove, and the fan can be pulled outward to quickly disassemble the fan part, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the utility model.

[0017] Figure 3 This is a schematic diagram of the switch structure of the utility model.

[0018] Figure 4 This is a schematic diagram of the structure of the driving member of the utility model.

[0019] Figure 5 This is an assembly diagram of the insertion rod and the limiting groove of the utility model.

[0020] Figure 6 It is a schematic diagram of the overall cross-sectional structure of the utility model.

[0021] Figure 7 This is a schematic diagram of the overall cross-sectional structure of the utility model.

[0022] Figure 8 It is a schematic diagram of the cross-sectional structure of the explosion-proof shell of the utility model.

[0023] In the figure: 1. shell; 2. switch element; 3. rotating shaft; 4. switch barrel; 5. gear; 6. cavity; 7. filter hole; 8. opening; 9. rack; 10. slide rod; 11. straight plate; 12. connecting block; 13. screw rod; 14. turntable; 15. transmission shaft; 16. limit groove; 17. plug rod; 18. rotating block; 19. fan; 20. explosion-proof shell; 21. filter plate; 22. dust blocking hole; 23. matching block; 24. support pile; 25. bottom plate; 26. slide hole; 27. stator; 28. rotor; 29. ​​air vent; 30. driving element. DETAILED DESCRIPTION

[0024] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0026] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0027] Embodiment 1

[0028] See also Figure 1-8 , the utility model provides the following technical solutions:

[0029] Specifically, it refers to a high-power three-phase asynchronous motor, including a shell 1, the inner wall of the shell 1 is provided with a plurality of switch components 2, the switch components 2 include a rotating shaft 3, one end of the rotating shaft 3 is rotatably connected to the inner wall of the shell 1, a switch barrel 4 is fixedly connected to the side of the rotating shaft 3, the other end of the rotating shaft 3 is fixedly connected to a gear 5, the side of the gear 5 is rotatably connected to the inner wall of the shell 1, a cavity 6 is provided in the switch barrel 4, a plurality of filter holes 7 are provided on the inner wall of the switch barrel 4, an opening 8 is provided on the side of the switch barrel 4, a driving component 30 is installed in the shell 1, the driving component 30 includes a connecting block 12, the connecting block 12 is fixedly connected to the shell 1, a threaded rod 13 is rotatably connected to the connecting block 12, and a rotating disk 14 is fixedly connected to the other end of the threaded rod 13, the shell Two slide bars 10 are symmetrically and slidably connected to the surface of the body 1, and one end of the two slide bars 10 is fixedly connected to a rack 9, each rack 9 is meshed with the corresponding gear 5, a straight plate 11 is fixedly connected between the two slide bars 10, and the straight plate 11 is threadedly connected to the threaded rod 13, a stator 27 is fixedly connected to the inner wall of the shell 1, a transmission shaft 15 is rotatably connected to the axial position of the shell 1, a rotor 28 matched with the stator 27 is fixedly connected to the side surface of the transmission shaft 15, a limiting groove 16 is provided at the end of the transmission shaft 15, a plurality of support piles 24 are fixedly connected to the bottom surface of the shell 1, a bottom plate 25 is fixedly connected between each support pile 24, two sliding holes 26 are provided on the top of the shell 1, and the two slide bars 10 are slidably connected to the corresponding two sliding holes 26.

[0030] The specific application of this embodiment is: in the process of storing the three-phase asynchronous motor, in order to prevent external dust from falling into the motor, by rotating the turntable 14, the turntable 14 is rotatably connected to the shell 1, the turntable 14 drives the threaded rod 13 to rotate, the threaded rod 13 is threadedly connected to the straight plate 11, and the rotation of the threaded rod 13 drives the straight plate 11 to move. In the initial state, the filter hole 7 is exposed to the outside of the shell 1. During heat dissipation, air enters the cavity 6 through the heat dissipation hole, and the rotor 28 and the stator 27 are cooled through the opening 8. The straight plate 11 pulls the rack 9 to move, and the rack 9 drives each gear 5 to rotate. The switch barrel 4 is affected by the gear 5 to rotate, and the side sealing part of the switch barrel 4 faces the outside of the shell 1. One side of the filter hole 7 is turned into the inside of the shell 1. The rotation of the switch barrel 4 can make the shell 1 in a completely closed state, and the external dust will not enter the interior through the filter hole 7 during storage.

[0031] Embodiment 2

[0032] See also Figure 1-5 The second embodiment makes the following improvements on the basis of the first embodiment. Specifically, a plug rod 17 matched with the limit groove 16 is inserted at the end of the transmission shaft 15, a rotating block 18 is fixedly connected to the end of the plug rod 17, a fan 19 is fixedly connected to the rotating block 18, an explosion-proof shell 20 is fixedly connected to the inner wall of the shell 1, a filter plate 21 is bolted to the inner wall of the explosion-proof shell 20, a plurality of groups of dust blocking holes 22 are provided on the filter plate 21, a vent 29 is provided on the side of the explosion-proof shell 20, a matching block 23 is fixedly connected to the side of the filter plate 21, and the matching block 23 is rotatably connected to the rotating block 18.

[0033] A specific application of this embodiment is: the transmission shaft 15 drives the rotating block 18 and the fan 19 to rotate. During the rotation of the fan 19, a negative pressure is formed in the explosion-proof shell 20, driving the outside air to enter the shell 1 through the filter hole 7. The air passes through the air vent 29 and is filtered again by the filter plate 21 to dissipate the heat of the rotor 28 and the stator 27. The shell 1 is a first shell and a second shell screwed together. When dissipating heat, in the process of installing and disassembling the fan 19, the bolts between the filter plate 21 and the explosion-proof shell 20 are unscrewed, and the fan 19 is pulled outward from the transmission shaft 15. The insertion rod 17 is disengaged from the limiting groove 16, and the installation and disassembly of the fan 19 can be completed. The cooperation between the insertion rod 17 and the limiting groove 16 can facilitate the disassembly and installation of the fan 19.

[0034] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0035] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0036] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0037] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

[0038] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A high-power three-phase asynchronous motor, comprising a housing (1), characterized in that: The inner wall of the housing (1) is provided with a plurality of switch components (2), the switch components (2) comprising a rotating shaft (3), one end of the rotating shaft (3) being rotatably connected to the inner wall of the housing (1), a switch barrel (4) being fixedly connected to the peripheral side of the rotating shaft (3), the other end of the rotating shaft (3) being fixedly connected to a gear (5), the side of the gear (5) being rotatably connected to the inner wall of the housing (1), a cavity (6) being provided in the switch barrel (4), a plurality of filter holes (7) being provided in the inner wall of the switch barrel (4), an opening (8) being provided on the side of the switch barrel (4), a driving component (30) being installed in the housing (1), the driving component (30) comprising a connecting block (12), the connecting block (12) being fixedly connected to the housing (1); A threaded rod (13) is rotatably connected to the connection block (12), and a rotating disk (14) is fixedly connected to the other end of the threaded rod (13). Two sliding rods (10) are symmetrically slidably connected to the surface of the housing (1), and one end of each of the two sliding rods (10) is fixedly connected to a rack (9), and the two racks (9) are respectively meshed with corresponding gears (5). A straight plate (11) is fixedly connected between the two sliding rods (10), and the straight plate (11) is threadedly connected to the threaded rod (13).

2. A high-power three-phase asynchronous motor according to claim 1, characterized in that: The inner wall of the housing (1) is fixedly connected to a stator (27), the housing (1) is rotatably connected to a transmission shaft (15) at an axial position, the peripheral side of the transmission shaft (15) is fixedly connected to a rotor (28) adapted to the stator (27), and a limiting groove (16) is provided at the end of the transmission shaft (15).

3. A high-power three-phase asynchronous motor according to claim 2, characterized in that: An insertion rod (17) matched with the limiting groove (16) is inserted at the end of the transmission shaft (15), a rotating block (18) is fixedly connected to the end of the insertion rod (17), and a fan (19) is fixedly connected to the rotating block (18).

4. A high-power three-phase asynchronous motor according to claim 1, characterized in that: The inner wall of the shell (1) is fixedly connected to an explosion-proof shell (20), the inner wall of the explosion-proof shell (20) is bolted to a filter plate (21), the filter plate (21) is provided with a plurality of groups of ash blocking holes (22), and the side of the explosion-proof shell (20) is provided with an air vent (29).

5. A high-power three-phase asynchronous motor according to claim 4, characterized in that: A matching block (23) is fixedly connected to the side of the filter plate (21), and the matching block (23) is rotatably connected to the rotating block (18).

6. A high-power three-phase asynchronous motor according to claim 1, characterized in that: The bottom surface of the shell (1) is fixedly connected to a plurality of support piles (24), a bottom plate (25) is fixedly connected between the support piles (24), and two sliding holes (26) are opened on the top of the shell (1), and the two sliding rods (10) are respectively slidably connected to the corresponding two sliding holes (26).

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