Self-generating device for motor side and motor

Abstract

A self-generating device for a motor side and a motor, the motor comprises a motor body and the self-generating device, the motor body comprises a rotating shaft and a self-generating bearing outer cover, the self-generating device comprises a plurality of permanent magnets, a plurality of groups of coils and a permanent magnet fixing ring, the permanent magnet fixing ring comprises a permanent magnet fixing outer ring, a permanent magnet fixing inner ring and a permanent magnet pressing ring, the permanent magnets are distributed on the permanent magnet fixing outer ring, the permanent magnet pressing ring is fixedly connected with the first surface of the permanent magnet fixing outer ring, the permanent magnet fixing inner ring is located between the permanent magnet fixing outer ring and the permanent magnet pressing ring and fixedly connected with the permanent magnet fixing outer ring, and the permanent magnet fixing inner ring is connected with the rotating shaft in an interference fit mode. The coils are fixed to the inner surface of the self-generating bearing outer cover, and the inner surface of the self-generating bearing outer cover is opposite to the permanent magnet. Based on the electromagnetic conversion principle, the self-generating device is rigidly connected with the motor rotor and the self-generating bearing outer cover, and when the motor is started, the self-generating device works to provide power for external monitoring equipment of the motor.

Description

Technical Field

[0001] The utility model belongs to the field of motor self-generating machinery, and in particular relates to a self-generating device used on the motor side and a motor. Background Art

[0002] Nowadays, in the fields of chemical industry, pharmaceutical industry, mechanical processing, automobile manufacturing, etc., rotating equipment such as motors have become indispensable mechanical equipment. Some key equipment even determines the operation of the entire factory. It has become an indispensable requirement to increase the status monitoring of motor equipment. Existing motors need to install monitoring sensors on the outside of the motors. The monitoring sensors have their own batteries or connected circuits, which will bring about problems such as battery replacement, cable laying, and signal transmission, making the installation and use of monitoring equipment cumbersome and may cause safety hazards.

[0003] For the above problems, there are many patents on self-generating technology, which are conducive to electromagnetic conversion and electrostatic conversion to achieve power generation. The structure is relatively complex and the efficiency is low, which is not suitable for powering motor monitoring equipment. For example, in the patent with application number CN201821453957.1, each magnet in the magnet fixing plate is fixed by screws, which is troublesome and labor-intensive to install. The monitoring equipment needs to be powered separately. The existing monitoring equipment needs to be powered by a battery or an external power supply. The battery power supply has a short lifespan and the unstable voltage affects the use of the equipment. Most factories now have high-voltage equipment, and the laying of external power supply lines is relatively cumbersome.

[0004] Therefore, there is an urgent need for a self-generating device which has a simple structure, is easy to install, and is used to power monitoring equipment on a motor. Utility Model Content

[0005] In response to the above technical problems, the utility model provides a self-generating device and a motor for the motor side, which are rigidly connected to the motor rotor and the outer cover of the self-generating bearing based on the principle of electromagnetic conversion. When the motor is started, the self-generating device works to provide power for the external monitoring equipment of the motor.

[0006] To achieve the above purpose, the technical solution of the utility model is:

[0007] A self-generating device for a motor side, the motor body and the self-generating device, the motor body includes a rotating shaft, a self-generating bearing outer cover and a bearing inner ring, and the self-generating device includes:

[0008] a plurality of permanent magnets;

[0009] A permanent magnet fixing ring is arranged in the area between the outer cover of the self-generating bearing and the inner ring of the bearing, the permanent magnet fixing ring comprises a permanent magnet fixing outer ring, a permanent magnet fixing inner ring and a permanent magnet pressure ring, the permanent magnets are symmetrically distributed on the permanent magnet fixing outer ring with the rotating shaft as the center, the permanent magnet fixing outer ring has a first surface, the permanent magnet pressure ring is fixedly connected to the first surface of the permanent magnet fixing outer ring, the permanent magnet fixing inner ring is located between the permanent magnet fixing outer ring and the permanent magnet pressure ring, and is fixedly connected to the permanent magnet fixing outer ring, and the permanent magnet fixing inner ring is connected to the rotating shaft by interference fit;

[0010] A plurality of groups of coils are symmetrically distributed on the inner surface of the outer cover of the self-generating bearing with the rotating shaft as the center, and the inner surface of the outer cover of the self-generating bearing faces the permanent magnet;

[0011] Wherein, the first surface of the permanent magnet fixed outer ring is the surface which is away from the outer cover of the self-generating bearing.

[0012] In a preferred embodiment of the utility model, it also includes a power generation aluminum substrate, which is fixed on the inner surface of the self-generating bearing outer cover, and the coil is fixed on the power generation aluminum substrate.

[0013] In a preferred embodiment of the present invention, the permanent magnet fixed inner ring includes a first semicircle and a second semicircle which are detachably connected.

[0014] In a preferred embodiment of the utility model, a plurality of fixing holes are symmetrically and evenly distributed on the center of the permanent magnet fixing outer ring, and the permanent magnet comprises two cylinders with different diameters, and the cylinder with a larger diameter is embedded in the fixing hole.

[0015] In a preferred embodiment of the present invention, the permanent magnet includes an N-pole magnet and an S-pole magnet, and the N-pole magnet and the S-pole magnet are distributed at intervals on the permanent magnet fixed outer ring.

[0016] In a preferred embodiment of the utility model, a wire box is arranged on the motor body, a circuit module is arranged in the wire box, and the circuit module is connected to the coil guide.

[0017] In a preferred implementation manner of the utility model, the circuit module includes a rectifier circuit and a step-down circuit, the coil is connected to the rectifier circuit, and the rectifier circuit is connected to the step-down circuit.

[0018] In a preferred implementation manner of the utility model, the buck circuit includes a DCDC buck circuit and an LDO buck circuit.

[0019] Based on the same inventive concept, the present invention further provides a motor, comprising a motor body and the self-generating device for the motor side described in the above embodiment.

[0020] Due to the adoption of the above technical solution, the utility model has the following advantages and positive effects compared with the prior art:

[0021] (1) The utility model is used for a self-generating device on the motor side, including a permanent magnet fixing ring, the permanent magnet fixing ring including a permanent magnet pressing ring, a permanent magnet fixing outer ring and a permanent magnet fixing inner ring, the permanent magnet is arranged on the permanent magnet fixing outer ring, and then the permanent magnet fixing inner ring and the permanent magnet fixing outer ring are fixed at a position close to the inner circle, and the permanent magnet pressing ring and the permanent magnet fixing outer ring are fixed close to the outer edge, so as to achieve the fixation of the permanent magnet, and the permanent magnet is fixed by using the permanent magnet pressing ring, the permanent magnet fixing outer ring and the permanent magnet fixing inner ring, without the need to fix the permanent magnet by multiple screws, thereby reducing the cost of manual installation.

[0022] (2) The coil is fixed on the outer cover of the self-generating bearing in a static state, the permanent magnet fixed inner ring is connected with the motor shaft by interference fit, and the permanent magnet fixed ring is fixed in the area of ​​the self-generating bearing outer cover and the bearing inner ring, so that when the motor shaft rotates, the permanent magnet rotates with the permanent magnet fixed ring and the shaft, so that the coil forms a cutting magnetic flux line movement to generate current, thereby powering the monitoring equipment on the motor. Therefore, the self-generating device of the utility model is rigidly connected to the motor to form an integral body, and does not need to be installed separately outside the motor. It has a simple structure and is easy to install. The self-generating device generates electricity while the motor is working.

[0023] (3) At the same time, in the utility model, the permanent magnet fixed outer ring and the self-generating bearing outer cover are arranged opposite to each other, so that the permanent magnet fixed ring can prevent the lubricating oil in the motor from contaminating the coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a cross-sectional view of a self-generating device for a motor side according to Embodiment 1 of the utility model;

[0025] Figure 2 This is an exploded view of a self-generating device for a motor side according to Embodiment 1 of the utility model;

[0026] Figure 3 This is an assembly diagram of the permanent magnet fixing ring of Example 1 of the utility model;

[0027] Figure 4 This is a front view of the outer cover of the self-generating bearing of Example 1 of the utility model;

[0028] Figure 5 This is a schematic diagram of a rectifier circuit according to Embodiment 1 of the present utility model;

[0029] Figure 6 Schematic diagram of a DCDC step-down circuit according to Embodiment 1 of the present utility model;

[0030] Figure 7 This is a schematic diagram of an LDO step-down circuit according to Embodiment 1 of the present invention.

[0031] Explanation of the reference numerals in the accompanying drawings: 1. Self-generating bearing outer cover; 2. Rotating shaft; 3. Bearing inner ring; 4. Permanent magnet; 5. Permanent magnet fixing ring; 501. Permanent magnet fixing outer ring; 502. Permanent magnet fixing inner ring; 5021. First semicircle, 5022. Second semicircle; 503. Permanent magnet pressure ring; 6. Coil; 7. Power generation aluminum substrate; 8. Fixing hole; 9. Locking ring bolt. DETAILED DESCRIPTION

[0032] The following is a further detailed description of a self-generating device for a motor side and a motor proposed by the utility model in combination with the accompanying drawings and specific embodiments. The advantages and features of the utility model will become clearer according to the following description.

[0033] Example 1

[0034] See also Figure 1-4 A self-generating device for a motor side, the motor includes a motor body and a self-generating device, the motor body includes a rotating shaft 2, a self-generating bearing outer cover 1 and a bearing inner ring 3, the self-generating device includes: a plurality of permanent magnets 4, a plurality of coils 6 and a permanent magnet fixing ring 5.

[0035] The permanent magnet fixing ring 5 is arranged in the space between the self-generating bearing outer cover 1 and the bearing inner ring 3. The permanent magnet fixing ring 5 includes a permanent magnet fixing outer ring 501, a permanent magnet fixing inner ring 502 and a permanent magnet pressure ring 503. The permanent magnets 4 are symmetrically distributed on the permanent magnet fixing outer ring 501 with the rotating shaft 2 as the center. The permanent magnet fixing outer ring 501 has a first surface. The permanent magnet pressure ring 503 is fixedly connected to the first surface of the permanent magnet fixing outer ring 501. The permanent magnet fixing inner ring 502 is located between the permanent magnet fixing outer ring 501 and the permanent magnet pressure ring 503 and is fixedly connected to the permanent magnet fixing outer ring 501. The permanent magnet fixing inner ring 502 abuts against the bearing inner ring 33, and the permanent magnet fixing inner ring 502 is connected to the rotating shaft 2 by interference fit. The permanent magnet fixing ring 5 is arranged in the area between the self-generating bearing outer cover 1 and the bearing inner ring 3. In a specific implementation, the permanent magnet fixed inner ring 502, the permanent magnet fixed outer ring 501 and the permanent magnet pressing ring 503 are fixedly connected by screws.

[0036] The plurality of coils 6 are symmetrically distributed on the inner surface of the self-generating bearing outer cover 1 with the rotating shaft 2 as the center, and the inner surface of the self-generating bearing outer cover 1 faces the permanent magnet 4 .

[0037] The second surface of the permanent magnet fixed outer ring 501 is the surface away from the self-generating bearing outer cover 1 .

[0038] The self-generating device for the motor side of this embodiment is provided with a permanent magnet fixing ring 5, which includes a permanent magnet pressing ring 503, a permanent magnet fixing outer ring 501 and a permanent magnet fixing inner ring 502. The permanent magnet 4 is arranged on the permanent magnet fixing outer ring 501, and then the permanent magnet fixing inner ring 502 and the permanent magnet fixing outer ring 501 are fixed near the inner circle, and the permanent magnet pressing ring 503 and the permanent magnet fixing outer ring 501 are fixed near the outer edge, thereby achieving the fixation of the permanent magnet 4. The permanent magnet pressing ring 503, the permanent magnet fixing outer ring 501 and the permanent magnet fixing inner ring 502 are used to fix the permanent magnet 4, without the need to fix the permanent magnet 4 by multiple screws, thereby reducing the cost of manual installation.

[0039] Power generation principle: the coil 6 is fixed on the outer cover 1 of the self-generating bearing in a static state, the permanent magnet fixing ring 5 is connected with the motor shaft 2 by interference fit, specifically, the permanent magnet fixing inner ring 502 is connected with the motor shaft 2 by interference fit, so as to achieve radially firm fixation. At the same time, the permanent magnet fixing ring 5 is located in the area between the outer cover 1 of the self-generating bearing and the inner ring 33 of the bearing, so that the permanent magnet fixing inner ring 502 is pressed against the inner ring 33 of the bearing, and axial fixation is achieved. This interference connection structure ensures that the permanent magnet fixing ring 5 will rotate with the motor shaft 2. When the motor shaft 2 rotates, the permanent magnet 4 rotates with the permanent magnet fixing ring 5 and the shaft 2, so that the coil 6 forms a motion of cutting the magnetic flux lines to generate current, thereby powering the monitoring equipment on the motor (such as the monitoring sensor set on the outer cover 1 of the self-generating bearing, etc.).

[0040] At the same time, in the utility model, the permanent magnet fixed outer ring 501 is arranged opposite to the self-generating bearing outer cover 1, so that the permanent magnet fixed ring 5 as a whole is arranged opposite to the inner surface of the self-generating bearing outer cover 1, and the permanent magnet fixed ring 5 can prevent the lubricating oil in the motor body from contaminating the coil 6.

[0041] In order to facilitate the installation of the coil 6 and enable multiple groups of coils 6 to be more easily placed in the same plane, the self-generating device also includes a power-generating aluminum substrate 7, which is fixed on the inner surface of the self-generating bearing outer cover 1, and the coil 6 is fixed on the power-generating aluminum substrate 7. For example, in a specific implementation, the coil 6 is directly welded and fixed on the power-generating aluminum substrate 7, and then the power-generating aluminum substrate 7 is bolted to the self-generating bearing outer cover 1.

[0042] In order to make the permanent magnet fixing ring 5 suitable for the rotating shaft 2 with different diameters, the permanent magnet fixing inner ring 502 is designed as two semicircular structures, that is, the permanent magnet fixing inner ring 502 includes a first semicircle 5021 and a second semicircle 5022, and the first semicircle 5021 and the second semicircle 5022 are fastened by a locking ring bolt 9 to achieve the connection between the first semicircle 5021 and the second semicircle 5022. By properly adjusting the size of the locking ring bolt 9, the permanent magnet fixing ring 5 can be suitable for different rotating shafts 2, with a wide range of applications, and can also solve the problem that the permanent magnet fixing ring 5 cannot be installed on the motor rotating shaft 2 due to processing errors of different axes.

[0043] One embodiment of the permanent magnet 4 being arranged in the permanent magnet fixed outer ring 501: a plurality of fixing holes 8 are evenly and symmetrically distributed about the center of the permanent magnet fixed outer ring 501; the permanent magnet 4 comprises two cylinders with different diameters, and the cylinder with a larger diameter is embedded in the fixing hole 8.

[0044] The permanent magnet 4 includes an N-pole magnet and an S-pole magnet, and the N-pole magnet and the S-pole magnet are distributed on the permanent magnet fixed outer ring 501 at intervals.

[0045] In another preferred embodiment, a wire box is provided on the motor body, a circuit module is provided in the wire box, and the circuit module is guide-connected to the coil 6 .

[0046] Specifically, the circuit module includes a rectifier circuit and a step-down circuit. The coil is connected to the rectifier circuit, and the rectifier circuit is connected to the step-down circuit. The rectifier circuit and the step-down circuit can be selected from the prior art, for example Figure 5 The rectifier circuit shown in the figure outputs three-phase AC current through the inductor to the circuit composed of diodes, and finally outputs single-phase DC power, which is input into the step-down circuit after filtering.

[0047] The buck circuit further includes a DCDC buck circuit and an LDO buck circuit. The specific DCDC buck circuit and LDO buck circuit can also be selected from the prior art. Figure 6 A DCDC step-down circuit is shown. Figure 7 The LDO step-down circuit is illustrated. For example, the 12V voltage output by the input rectifier circuit is outputted as 5V voltage through the DCDC step-down circuit, which can provide 5V power supply to meet the use of small motors. At the same time, the 5V input LDO voltage outputs 3.3V power supply to meet the use of sensors and other control circuits.

[0048] In this embodiment, the self-generating device on the motor side is designed using the electromagnetic conversion principle. The motor works and the self-generating device works at the same time to power low-power equipment such as motor monitoring or motor oiling. This effectively solves the problem that micro devices such as motor monitoring sensors and lubrication devices require separate power supply. At the same time, the self-generating device is rigidly connected to the motor to form an integrated whole, and there is no need to install it separately outside the motor.

[0049] Example 2

[0050] A motor comprises a motor body and a self-generating device for a motor side of embodiment 1, wherein the motor body comprises a self-generating bearing outer cover 1, a rotating shaft 2 and a bearing inner ring 3, a permanent magnet fixing ring 5 of the self-generating device is located at the positions of the self-generating bearing outer cover 1 and the bearing inner ring 3, a permanent magnet fixing inner ring 502 is interference connected with the rotating shaft 2, and a power generation aluminum substrate 7 fixed with a coil 6 is fixedly connected to the inner surface of the self-generating bearing outer cover 1.

[0051] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and their equivalents, they still fall within the protection scope of the present invention.

Claims

1. A self-generating device for a motor side, the motor comprising a motor body and a self-generating device, the motor body comprising a rotating shaft, a self-generating bearing outer cover and a bearing inner ring, characterized in that: include: a plurality of permanent magnets; A permanent magnet fixing ring is arranged in the area between the outer cover of the self-generating bearing and the inner ring of the bearing, the permanent magnet fixing ring comprises a permanent magnet fixing outer ring, a permanent magnet fixing inner ring and a permanent magnet pressure ring, the permanent magnets are symmetrically distributed on the permanent magnet fixing outer ring with the rotating shaft as the center, the permanent magnet pressure ring is fixedly connected to the first surface of the permanent magnet fixing outer ring, the permanent magnet fixing inner ring is located between the permanent magnet fixing outer ring and the permanent magnet pressure ring, and is fixedly connected to the permanent magnet fixing outer ring, and the permanent magnet fixing inner ring is connected to the rotating shaft by interference fit; A plurality of groups of coils are symmetrically distributed on the inner surface of the outer cover of the self-generating bearing with the rotating shaft as the center, and the inner surface of the outer cover of the self-generating bearing faces the permanent magnet; Wherein, the first surface of the permanent magnet fixed outer ring is the surface which is away from the outer cover of the self-generating bearing.

2. The self-generating device for the motor side according to claim 1, characterized in that: It also includes a power generation aluminum substrate, which is fixed on the inner surface of the self-generating bearing outer cover, and the coil is fixed on the power generation aluminum substrate.

3. The self-generating device for the motor side according to claim 1, characterized in that: The permanent magnet fixed inner ring includes a first semicircle and a second semicircle which are detachably connected.

4. The self-generating device for the motor side according to claim 1, characterized in that: A plurality of fixing holes are evenly and symmetrically distributed on the center of the permanent magnet fixing outer ring. The permanent magnet comprises two cylinders with different diameters, and the cylinder with a larger diameter is embedded in the fixing hole.

5. The self-generating device for the motor side according to claim 1 or 4, characterized in that: The permanent magnet comprises an N-pole magnet and an S-pole magnet, and the N-pole magnet and the S-pole magnet are distributed at intervals on the permanent magnet fixed outer ring.

6. The self-generating device for the motor side according to claim 1, characterized in that: An electric wire box is arranged on the motor body, a circuit module is arranged in the electric wire box, and the circuit module is connected with the coil guide.

7. The self-generating device for the motor side according to claim 6, characterized in that: The circuit module includes a rectifier circuit and a step-down circuit. The coil is connected to the rectifier circuit, and the rectifier circuit is connected to the step-down circuit.

8. The self-generating device for the motor side according to claim 7, characterized in that: The step-down circuit includes a DCDC step-down circuit and an LDO step-down circuit.

9. A motor, characterized in that: It comprises a motor body and a self-generating device for the motor side as described in any one of claims 1-8.

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