Rotor structure of air-cooled motor

Abstract

The utility model relates to the technical field of motors, in particular to a rotor structure of an air-cooled motor, which comprises a main shaft, a rotor body, a sealing plate, a permanent magnet and a fastening assembly, the permanent magnet consists of a plurality of permanent magnet blocks, a plurality of axially extending chutes are arranged on the rotor body at intervals, and a limiting block capable of sliding in the chute is arranged on each permanent magnet block; the rotor body is further provided with a fastening assembly, the fastening assembly is provided with a pressing part connected with the rotor body in a sliding mode, and the pressing part can be controlled by the driving structure to move in the axial direction and press the permanent magnet blocks. According to the utility model, the permanent magnet can be detachably mounted by using the fastening assembly, and is convenient to replace and maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a rotor structure of an air-cooled motor. Background Art

[0002] The motor is a common electromagnetic device, which is currently mainly used as a variety of drivers. Nowadays, there are many types of motors. Since motors generate heat when they work, they can be divided into water-cooled motors and air-cooled motors according to their heat dissipation methods.

[0003] At present, air-cooled motors can be divided into permanent magnet motors and electromagnetic motors, and permanent magnet motors refer to motors that fix permanent magnets on the rotor. This type of motor has the advantage of being more efficient in converting electrical energy into mechanical energy because the permanent magnets generate a strong magnetic field and are widely promoted. However, the permanent magnets on the rotor cannot be removed. When the permanent magnets are damaged or need to be replaced for other reasons, the entire motor rotor needs to be replaced, so the maintenance cost is high. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a rotor structure for an air-cooled motor, aiming to solve the problems arising from the above-mentioned background technology.

[0005] The technical solution of the utility model is implemented as follows: a rotor structure of an air-cooled motor, comprising:

[0006] Spindle;

[0007] The rotor body is connected to the main shaft through a key and is coaxially arranged;

[0008] The sealing plate is coaxially sleeved on the main shaft and connected to the main shaft by bolts;

[0009] The permanent magnet is composed of a plurality of permanent magnet blocks, characterized in that: a plurality of axially extending slide grooves are arranged at intervals on the rotor body, and a limit block capable of sliding in the slide groove is arranged on each permanent magnet block;

[0010] Wherein, a fastening assembly is also provided on the rotor body, and the fastening assembly has a clamping part which is slidably connected to the rotor body, and the clamping part can be controlled by the driving structure to move axially and clamp the permanent magnet block.

[0011] Preferably, the driving structure comprises:

[0012] The driving chamber is composed of a threaded chamber and a movable chamber, wherein the threaded chamber and the movable chamber are coaxially arranged and axially extended;

[0013] A fastening bolt is matched with the threaded cavity, and one end of the bolt extends into the movable cavity;

[0014] The movable block is slidably arranged in the movable cavity.

[0015] Preferably, the rotor body is provided with a first limiting groove communicating with the active cavity, and the pressing portion comprises:

[0016] A pressing block is slidably connected to the first limiting groove via a sliding shaft;

[0017] The limiting rib is formed on the side of the pressing block close to the permanent magnet block;

[0018] The sliding shaft is fixedly connected to the movable block, and a second limiting groove adapted to the limiting rib is provided on one side of the permanent magnet block.

[0019] Preferably, an integrally formed limiting piece is provided on an edge of one side of the pressing block away from the rotor body.

[0020] Preferably, one end of the movable block close to the fastening bolt is provided with a positioning groove adapted to one end of the fastening bolt.

[0021] The utility model has at least the following beneficial effects:

[0022] 1. The utility model is provided with a fastening assembly, and the permanent magnet can be detachably arranged on the rotor by means of fasteners. Therefore, it is more convenient to replace the permanent magnet, thereby reducing the maintenance cost.

[0023] 2. The fastening assembly of the utility model can fix a single permanent magnet block, that is, during disassembly and assembly, only one permanent magnet block can be disassembled without removing all permanent magnet blocks, thereby improving the convenience of disassembly and assembly.

[0024] In addition, other advantages of the present invention will be demonstrated in the embodiments of the present invention, thereby making the beneficial effects of the present invention more significant. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] 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 labor.

[0026] Figure 1 This is a schematic diagram of the structure of a specific embodiment 1 of the utility model;

[0027] Figure 2 for Figure 1 Schematic diagram from another angle;

[0028] Figure 3It is a cross-sectional view of a specific embodiment 1 of the utility model;

[0029] Figure 4 It is a schematic structural diagram of specific embodiment 2 of the utility model. DETAILED DESCRIPTION

[0030] 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 of 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.

[0031] Example 1

[0032] like Figure 1-3 As shown, the utility model discloses a rotor structure of an air-cooled motor, comprising:

[0033] Spindle 10;

[0034] The rotor body 11 is connected to the main shaft 10 through a key and is coaxially arranged;

[0035] The sealing plate 12 is coaxially sleeved on the main shaft 10 and connected to the main shaft 10 via bolts 14;

[0036] The permanent magnet is composed of a plurality of permanent magnet blocks 20. In this embodiment, the rotor body 11 is provided with a plurality of axially extending slide grooves 15 at intervals, and each permanent magnet block 20 is provided with a limit block 20a that can slide in the slide groove. The cooperation between the limit block and the slide groove can play a positioning role for the permanent magnet block 20.

[0037] The rotor body 11 is also provided with a fastening assembly, and the fastening assembly has a clamping portion 30 slidably connected to the rotor body 11 . The clamping portion 30 can be controlled by the driving structure to move axially and clamp the permanent magnet block 20 .

[0038] In this embodiment, the main shaft 10 can be connected to the actual driving member through the flange 10a. This is a prior art and will not be described in detail in this embodiment.

[0039] In this embodiment: the driving structure includes:

[0040] The driving chamber is composed of a threaded chamber 32 formed on the sealing plate 12 and a movable chamber 31 formed on the rotor body 11, wherein the threaded chamber 32 and the movable chamber 31 are coaxially arranged and axially extended;

[0041] The fastening bolt 33 cooperates with the threaded cavity, and one end of the fastening bolt extends into the movable cavity 31;

[0042] The movable block 34 is slidably disposed in the movable cavity 31 .

[0043] In this embodiment: the rotor body 11 is provided with a first limiting groove 4 communicating with the active cavity 31, and the pressing portion 30 includes:

[0044] The pressing block 41 is slidably connected to the first limiting groove 4 via a sliding shaft 42;

[0045] The limiting rib 43 is formed on one side of the pressing block 41 close to the permanent magnet block 20;

[0046] Among them, the sliding shaft 42 is fixedly connected to the movable block 34, and a second limiting groove adapted to the limiting rib 43 is provided on one side of the permanent magnet block 20. The cooperation between the limiting rib and the second limiting groove can improve the limiting effect of the clamping block on the permanent magnet block and ensure the fixation of the permanent magnet block.

[0047] refer to Figure 1-3 When this embodiment is in use, the main shaft is rotatably arranged in the housing of the motor. When the stator and the rotor cooperate, the main shaft can be controlled to rotate when the rotor body rotates, thereby achieving power output. The main shaft operation principle of this embodiment is a very mature existing technology, so it will not be described in detail in this embodiment.

[0048] The disassembly and assembly principle of the permanent magnet block in this embodiment is to control the tightness of the movable block by tightening bolts. That is to say, when disassembling, by loosening the tightening bolts, the movable block loses the support of the tightening bolts and slides in the movable cavity, and drives the clamping block to loosen the permanent magnet block through the sliding shaft, and removes the permanent magnet block to complete the disassembly. Similarly, the corresponding installation steps can be completed.

[0049] The permanent magnet block of this embodiment can be disassembled and assembled without removing the sealing plate, so it is more convenient to replace the permanent magnet block.

[0050] Embodiment 2 is different from Embodiment 1 in that:

[0051] like Figure 4 As shown, in this embodiment, an integrally formed limiting piece 60 is provided on an edge of the pressing block 41 away from the rotor body 11 .

[0052] In this embodiment, a positioning groove 62 adapted to one end of the fastening bolt 33 is provided at one end of the movable block 34 close to the fastening bolt 33 .

[0053] refer to Figure 4 The advantage of this embodiment is that the fixing effect of the permanent magnet block can be further improved by the limiting plate on the clamping block, and the positioning groove set on the movable block can improve the matching effect between the movable block and the fastening bolt, so that the fastening bolt can better match the movable block.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rotor structure of an air-cooled motor, comprising: Spindle (10); The rotor body (11) is connected to the main shaft (10) via a key and is coaxially arranged; A sealing plate (12) is coaxially sleeved on the main shaft (10) and connected to the main shaft (10) via bolts (14); The permanent magnet is composed of a plurality of permanent magnet blocks (20), characterized in that: a plurality of axially extending slide grooves (15) are arranged at intervals on the rotor body (11), and a limit block (20a) capable of sliding in the slide groove (15) is arranged on each permanent magnet block (20); The rotor body (11) is also provided with a fastening assembly, which has a clamping portion (30) slidably connected to the rotor body (11), and the clamping portion (30) can be controlled by the driving structure to move axially and clamp the permanent magnet block (20).

2. The rotor structure of an air-cooled motor according to claim 1, characterized in that: The driving structure comprises: The driving chamber is composed of a threaded chamber (32) and a movable chamber (31), wherein the threaded chamber (32) and the movable chamber (31) are coaxially arranged and axially extended; A fastening bolt (33) is matched with the threaded cavity (32) and one end of the fastening bolt extends into the movable cavity (31); The movable block (34) is slidably disposed in the movable cavity (31).

3. The rotor structure of an air-cooled motor according to claim 2, characterized in that: The rotor body (11) is provided with a first limiting groove (4) communicating with the active cavity (31), and the pressing portion (30) comprises: A pressing block (41) is slidably connected to the first limiting groove (4) via a sliding shaft (42); A limiting rib (43) is formed on a side of the pressing block (41) close to the permanent magnet block (20); The sliding shaft (42) is fixedly connected to the movable block (34), and a second limiting groove adapted to the limiting rib (43) is provided on one side of the permanent magnet block (20).

4. The rotor structure of an air-cooled motor according to claim 3, characterized in that: An integrally formed limiting piece (60) is provided on one side edge of the pressing block (41) away from the rotor body (11).

5. A rotor structure of an air-cooled motor according to any one of claims 2 to 4, characterized in that: One end of the movable block (34) close to the fastening bolt (33) is provided with a positioning groove (62) adapted to one end of the fastening bolt (33).

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