CN210724484U - Device for releasing rotor high-frequency voltage of low-voltage 400V and high-power variable-frequency motor - Google Patents
Device for releasing rotor high-frequency voltage of low-voltage 400V and high-power variable-frequency motor Download PDFInfo
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- CN210724484U CN210724484U CN201921892420.XU CN201921892420U CN210724484U CN 210724484 U CN210724484 U CN 210724484U CN 201921892420 U CN201921892420 U CN 201921892420U CN 210724484 U CN210724484 U CN 210724484U
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Abstract
The utility model relates to a inverter motor technical field, a low pressure 400V, high-power inverter motor releases rotor high-frequency voltage's device, which comprises a motor, power output shaft, the copper ring, conductive fiber brush and adjusting screw, power output shaft installs on the motor right side, the copper ring is fixed on the motor in the power output shaft outside, set up along the circumference on the copper ring and be no less than two radial mounting hole, all install conductive fiber brush in every radial mounting hole, conductive fiber brush's the inner offsets with power output shaft, install the adjusting screw that offsets with conductive fiber brush outer end through the screw thread in the radial mounting hole of keeping away from power output shaft one side. The utility model has the advantages of reasonable and compact structure, through the method of conducting ring with the leading-in ground of high-frequency voltage, avoided high-power frequency conversion power take off bearing electroerosion phenomenon, reduced inverter motor's fault rate, it is simple to have the installation simultaneously, whole volume quality is less, portable installation, ordinary electrician can install the characteristics of use.
Description
Technical Field
The utility model relates to a variable frequency motor technical field is a low pressure 400V, high-power variable frequency motor release rotor high-frequency voltage's device.
Background
In the power industry, when a plurality of high-power frequency converters are simultaneously installed on the same low-voltage power supply side, the bearings of the plurality of variable-frequency motors are subjected to different degrees of electrolytic corrosion before and after the motors are used for less than one year in the operation process, so that the equipment operation is greatly hidden danger, the service life of the motors is adversely affected, and the failure rate is increased.
Disclosure of Invention
The utility model provides a low pressure 400V, high-power inverter motor release rotor high frequency voltage's device has overcome above-mentioned prior art not enough, and it can effectively solve inverter motor and have different degree electrolytic corrosion around using less than a year motor bearing, causes great hidden danger to equipment operation, increases the problem of fault rate.
The technical scheme of the utility model is realized through following measure: the utility model provides a low pressure 400V, high-power inverter motor releases rotor high-frequency voltage's device, which comprises a motor, power output shaft, the copper ring, conductive fiber brush and adjusting screw, power output shaft installs on the motor right side, the copper ring is fixed on the motor in the power output shaft outside, set up the radial mounting hole of being no less than two along the circumference on the copper ring, all install conductive fiber brush in every radial mounting hole, conductive fiber brush's the inner offsets with power output shaft, install the adjusting screw that offsets with conductive fiber brush outer end through the screw thread in the radial mounting hole of keeping away from power output shaft one side.
The following are further optimization or/and improvement of the technical scheme of the utility model:
a compression spring can be arranged in a radial mounting hole between the conductive fiber brush and the adjusting screw.
The number of the radial mounting holes can be 6, and the radial mounting holes are uniformly distributed on the copper ring.
The radial mounting hole can be in a step shape with a wide outer part and a narrow inner part, and the section of the conductive fiber brush which can be clamped on the step is in a T shape.
The right side of the motor can be provided with a motor end cover, and the copper ring is fixedly arranged on the motor end cover through screws.
The utility model has the advantages of reasonable and compact structure, through the mode of conducting ring with the leading-in ground of high-frequency voltage, avoided high-power frequency conversion power take off bearing electroerosion phenomenon, reduced inverter motor's fault rate, it is simple to have the installation simultaneously, whole volume quality is less, portable installation, ordinary electrician can install the characteristics of use.
Drawings
Fig. 1 is a schematic sectional view of the preferred embodiment of the present invention.
Fig. 2 is a schematic structural view of the conductive fiber brush of the present invention when it is installed.
Fig. 3 is a schematic structural diagram of the conductive fiber brush of the present invention after operation.
The codes in the figures are respectively: 1 is the copper ring, 2 is the conductive fiber brush, 3 is power output shaft, 4 is adjusting screw, 5 is compression spring, 6 is the motor end cover, 7 is spacing platform.
Detailed Description
The utility model discloses do not receive the restriction of following embodiment, can be according to the utility model discloses a technical scheme and actual conditions determine concrete implementation.
In the present invention, for convenience of description, the description of the relative position relationship of the components is described according to the layout mode of the attached drawing 1 in the specification, such as: the positional relationship of up, down, left, right, etc. is determined in accordance with the layout direction of fig. 1 in the specification.
The invention will be further described with reference to the following examples and drawings:
as shown in the attached drawings 1-3, the device for releasing high-frequency voltage of a rotor by using a low-voltage 400V high-power variable frequency motor comprises a motor, a power output shaft 3, a copper ring 1, a conductive fiber brush 2 and an adjusting screw 4, wherein the power output shaft 3 is installed on the right side of the motor, the copper ring 1 is fixed on the motor outside the power output shaft 3, at least two radial mounting holes are formed in the copper ring 1 along the circumference, the conductive fiber brush 2 is installed in each radial mounting hole, the inner end of the conductive fiber brush 2 abuts against the power output shaft 3, and the adjusting screw 4 abutting against the outer end of the conductive fiber brush 2 is installed in the radial mounting hole far away from one side of the power output shaft 3 through threads.
The copper ring 1 is connected with the conductive fiber brush 2 together, the copper ring 1 plays a role of fixing the conductive fiber brush 2 and conducting electricity, after the conductive fiber brush 2 is used for too long time, the friction contact surface of the head of the conductive fiber brush 2 is easy to be too small or not contacted, so that the conductive effect can not be achieved, the contact surface is increased by adjusting the conductive fiber brush 2 by arranging the adjusting screw 4, the harmonic wave of the variable frequency motor is higher, so that the high-frequency voltage is generated on the motor rotor, the power output bearing is corroded electrically, the copper ring 1 is connected with the front end cover of the motor by the screw, the high-frequency voltage generated by the motor rotor when rotating passes through the power output shaft 3, the high-frequency voltage is led into the conductive fiber brush 2 by the rotary connection of the conductive fiber brush 2 and the power output shaft 3, the high-frequency voltage is led into the stator by the connection of the conductive fiber brush 2 and the copper ring 1, thus avoiding the electric corrosion of the high-frequency voltage to the power output bearing.
Wherein, the model of motor is: YBPT 355L2-4W (flame-proof variable-frequency speed-regulating three-phase asynchronous motor).
The device for releasing the high-frequency voltage of the rotor of the low-voltage 400V high-power variable frequency motor can be further optimized or/and improved according to the actual requirement:
as shown in fig. 1-3, a compression spring 5 is installed in the radial mounting hole between the conductive fiber brush 2 and the adjusting screw 4. Through adjusting screw 4, make adjusting screw 4 and compression spring 5 to the contact, adjusting screw 4 is when inside the regulation, compress compression spring 5, compression spring 5's the other end contacts with conductive fiber brush 2, thereby release conductive fiber brush 2 from the downthehole portion of copper ring 1, make conductive fiber brush 2 contact the lateral wall of power output shaft 3, reached and prevented conductive fiber brush 2 after the live time overlength, cause 2 first friction contact face undersize of conductive fiber brush or contactless easily, thereby the effect that does not conduct.
As shown in fig. 1-3, the number of radial mounting holes is 6 and evenly distributed on the copper ring 1. By forming 6 holes in the copper ring 1 and installing the conductive fiber brush 2 in the holes, the contact area between the conductive fiber brush 2 and the power output shaft 3 is increased, and the output of high-frequency voltage is increased.
As shown in fig. 1-3, the inside of the copper ring 1 is provided with a limit stop 7 for preventing the conductive fiber brush 2 from falling off from the inside of the hole. Through setting up spacing platform 7, play and prevent that conductive fiber brush 2 from droing from the inside in hole of copper ring.
As shown in fig. 1-3, the radial mounting hole is in a step shape with a wide outside and a narrow inside, and the section of the conductive fiber brush 2 which can be clamped on the step is in a T shape. Set up like this, at conductive fiber brush 2 when just beginning work, conductive fiber brush 2 does not have wearing and tearing, there is not the contact between conductive fiber brush 2 this moment and spacing platform 7, and after conductive fiber brush 2 works a period, conductive fiber brush 2 can produce wearing and tearing with power output shaft 3's contact surface, make conductive fiber brush 2's contact surface reduce or contactless, this moment, make conductive fiber brush 2 and power output shaft 3 contact through adjusting screw 4, after adjusting to conductive fiber brush 2 and spacing platform 7 contact, conductive fiber brush 2 just can not adjust again, just need more renew conductive fiber brush 2, thereby reach electrically conductive effect.
As shown in the attached drawings 1-3, a motor end cover 6 is arranged on the right side of the motor, and the copper ring 1 is fixedly arranged on the motor end cover 6 through screws. The motor is convenient to fix the copper ring 1 on the motor, and the copper ring 1 is prevented from loosening.
The utility model discloses best embodiment's use: firstly, a copper ring 1 is arranged on a motor end cover 6, a conductive fiber brush 2 is arranged in a hole formed in the copper ring 1, one end of the conductive fiber brush 2 is in contact with a power output shaft 3, then a compression spring 5 is arranged in the hole, the compression spring 5 is in contact with the conductive fiber brush 2, then an adjusting screw 4 is arranged, when the motor rotor works, high-frequency voltage generated by the rotation of the motor rotor is led into the conductive fiber brush 2 in contact with the power output shaft 3 through the power output shaft 3, and then is connected with the copper ring 1 through the conductive fiber brush 2 and led into a stator, and the stator is connected with the ground to lead the high-frequency voltage into the ground, so that the electric corrosion of the high-frequency voltage to a bearing is avoided.
Above technical feature constitutes the utility model discloses a best embodiment, it has stronger adaptability and best implementation effect, can increase and decrease unnecessary technical feature according to actual need, satisfies the demand of different situation.
Claims (8)
1. The utility model provides a low pressure 400V, high-power inverter motor releases rotor high frequency voltage's device, a serial communication port includes the motor, power output shaft, the copper ring, conductive fiber brush and adjusting screw, power output shaft installs on the motor right side, the copper ring is fixed on the motor in the power output shaft outside, set up the radial mounting hole of being no less than two along the circumference on the copper ring, all install conductive fiber brush in every radial mounting hole, conductive fiber brush's the inner offsets with power output shaft, install the adjusting screw that offsets with conductive fiber brush outer end through the screw thread in the radial mounting hole of keeping away from power output shaft one side.
2. The device for releasing the high-frequency voltage of the rotor of the low-voltage 400V high-power variable-frequency motor according to claim 1, wherein a compression spring is installed in a radial mounting hole between the conductive fiber brush and the adjusting screw.
3. The device for releasing the rotor high-frequency voltage of the low-voltage 400V high-power variable-frequency motor according to claim 1 or 2, wherein the number of the radial mounting holes is 6, and the radial mounting holes are uniformly distributed on the copper ring.
4. The device for releasing the high-frequency voltage of the rotor of the low-voltage 400V high-power variable-frequency motor according to claim 1 or 2, wherein the radial mounting hole is in a step shape with the wide outside and the narrow inside, and the section of the conductive fiber brush capable of being clamped on the step is in a T shape.
5. The device for releasing the high-frequency voltage of the rotor of the low-voltage 400V high-power variable-frequency motor according to claim 3, wherein the radial mounting hole is in a step shape with a wide outside and a narrow inside, and the section of the conductive fiber brush which can be clamped on the step is in a T shape.
6. The device for releasing the rotor high-frequency voltage of the low-voltage 400V high-power variable-frequency motor according to claim 1, 2 or 5, wherein a motor end cover is arranged at the right side of the motor, and the copper ring is fixedly arranged on the motor end cover through screws.
7. The device for releasing the rotor high-frequency voltage of the low-voltage 400V high-power variable-frequency motor according to claim 3, wherein a motor end cover is arranged on the right side of the motor, and the copper ring is fixedly arranged on the motor end cover through screws.
8. The device for releasing the rotor high-frequency voltage of the low-voltage 400V high-power variable-frequency motor according to claim 4, wherein a motor end cover is arranged on the right side of the motor, and the copper ring is fixedly arranged on the motor end cover through screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921892420.XU CN210724484U (en) | 2019-11-05 | 2019-11-05 | Device for releasing rotor high-frequency voltage of low-voltage 400V and high-power variable-frequency motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921892420.XU CN210724484U (en) | 2019-11-05 | 2019-11-05 | Device for releasing rotor high-frequency voltage of low-voltage 400V and high-power variable-frequency motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210724484U true CN210724484U (en) | 2020-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921892420.XU Active CN210724484U (en) | 2019-11-05 | 2019-11-05 | Device for releasing rotor high-frequency voltage of low-voltage 400V and high-power variable-frequency motor |
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| CN (1) | CN210724484U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113178980A (en) * | 2021-05-12 | 2021-07-27 | 伟晞新材料科技(上海)有限公司 | Shaft grounding bearing protection device and motor |
-
2019
- 2019-11-05 CN CN201921892420.XU patent/CN210724484U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113178980A (en) * | 2021-05-12 | 2021-07-27 | 伟晞新材料科技(上海)有限公司 | Shaft grounding bearing protection device and motor |
| CN113178980B (en) * | 2021-05-12 | 2023-08-08 | 伟晞新材料科技(上海)有限公司 | Shaft grounding bearing protection device and motor |
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