CN203206067U - Variable frequency motor non-transmission side bearing protective device - Google Patents

Variable frequency motor non-transmission side bearing protective device Download PDF

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Publication number
CN203206067U
CN203206067U CN2013201518593U CN201320151859U CN203206067U CN 203206067 U CN203206067 U CN 203206067U CN 2013201518593 U CN2013201518593 U CN 2013201518593U CN 201320151859 U CN201320151859 U CN 201320151859U CN 203206067 U CN203206067 U CN 203206067U
Authority
CN
China
Prior art keywords
transmission side
side bearing
brush
electric
frequency motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2013201518593U
Other languages
Chinese (zh)
Inventor
王瑞宏
汪昌平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Magang Group Holding Co Ltd
Maanshan Iron and Steel Co Ltd
Original Assignee
Magang Group Holding Co Ltd
Maanshan Iron and Steel Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Magang Group Holding Co Ltd, Maanshan Iron and Steel Co Ltd filed Critical Magang Group Holding Co Ltd
Priority to CN2013201518593U priority Critical patent/CN203206067U/en
Application granted granted Critical
Publication of CN203206067U publication Critical patent/CN203206067U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a variable frequency motor non-transmission side bearing protective device, comprising an electric brush assembly which comprises an electric brush and an electric brush mounting rack. The electric brush mounting rack is in connection with a motor end cover through motor end cover installing holes; the electric brush is installed on the electric mounting rack. The variable frequency motor non-transmission side bearing protective device avoids frequent damage of a non-transmission side bearing caused by shaft current, prolongs the service life of the bearing, raises equipment safety performance and reduces production accident generation frequency.

Description

The non-transmission side bearing protection device of a kind of variable-frequency motor
Technical field
The utility model belongs to the protection equipment of variable-frequency motor, and concrete is the non-transmission side bearing protection device of a kind of variable-frequency motor.
Background technology
Steel rolling production-line main transmission alternating-current variable frequency motor in use, the problem of non-transmission side damage of bearings often can occur, bearing short then 2-3 in useful life month, long also only has six months, when the main cause of the non-transmission side damage of bearings of motor was the three phase electric machine frequency control, the magnetic field in the current intelligence lower rotor part was uneven; There is harmonic wave in the converter plant power supply; The difference of rotor on making causes air gap irregular, so that the magnetic field in the rotor is uneven, above-mentioned factor all can cause motor when operation generation current in rotating shaft, this electric current forms the loop by bearing, and discharge ablation bearing enclose and rolling element cause damage of bearings.
Summary of the invention
Technical problem to be solved in the utility model provides the non-transmission side bearing protection device of a kind of variable-frequency motor; avoid non-transmission side bearing to damage frequently phenomenon because shaft current causes; improve the useful life of bearing and the security performance of equipment, reduce the production accident occurrence frequency.
The non-transmission side bearing protection device of a kind of variable-frequency motor of the utility model; it comprises brush assembly of electric, connecting axle; connecting axle is connected on the end face of rotor shaft; brush assembly of electric comprises brush and brush installing rack; the brush installing rack is enclosed within on the connecting axle; and be connected with electric motor end cap by the electric motor end cap installing hole, brush is installed on the brush installing rack.
The non-transmission side bearing protection device of this novel a kind of variable-frequency motor also comprises ground cable, and ground cable one end connects brush, an end ground connection.
Adopt the utility model that the electric current on the rotor shaft is drawn, make electric current not form discharge loop with bearing, thereby avoided non-transmission side bearing to damage frequently phenomenon because shaft current causes, improved the useful life of bearing and the security performance of equipment, reduced the production accident occurrence frequency.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Among the figure: 1, connecting axle 2, brush installing rack 3, brush 4, rotor shaft 5, bearing 6, ground cable 7, electric motor end cap.
Embodiment
Referring to accompanying drawing; the non-transmission side bearing protection device of this novel a kind of variable-frequency motor; it comprises brush assembly of electric, connecting axle 1; connecting axle 1 is connected on the end face of rotor shaft 4; brush assembly of electric comprises brush 3 and brush installing rack 2; brush installing rack 2 is enclosed within on the connecting axle 1, and is connected with electric motor end cap 7 by electric motor end cap 7 installing holes, and brush 3 is installed on the brush installing rack 2.
The non-transmission side bearing protection device of this novel a kind of variable-frequency motor also comprises ground cable 6, and ground cable 6 one ends connect brush 3, one end ground connection.
Adopt the utility model that the electric current on the rotor shaft 4 is drawn, make electric current not form discharge loop with bearing 5, thereby avoided non-transmission side bearing to damage frequently phenomenon because shaft current causes, improved the useful life of bearing and the security performance of equipment, reduced the production accident occurrence frequency.

Claims (2)

1. non-transmission side bearing protection device of variable-frequency motor; it is characterized in that: it comprises brush assembly of electric, connecting axle; connecting axle is connected on the end face of rotor shaft; brush assembly of electric comprises brush and brush installing rack; the brush installing rack is enclosed within on the connecting axle; and be connected with electric motor end cap by the electric motor end cap installing hole, brush is installed on the brush installing rack.
2. the non-transmission side bearing protection device of a kind of variable-frequency motor according to claim 1, it is characterized in that: it also comprises ground cable, ground cable one end connects brush, an end ground connection.
CN2013201518593U 2013-03-29 2013-03-29 Variable frequency motor non-transmission side bearing protective device Expired - Fee Related CN203206067U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013201518593U CN203206067U (en) 2013-03-29 2013-03-29 Variable frequency motor non-transmission side bearing protective device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013201518593U CN203206067U (en) 2013-03-29 2013-03-29 Variable frequency motor non-transmission side bearing protective device

Publications (1)

Publication Number Publication Date
CN203206067U true CN203206067U (en) 2013-09-18

Family

ID=49150128

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2013201518593U Expired - Fee Related CN203206067U (en) 2013-03-29 2013-03-29 Variable frequency motor non-transmission side bearing protective device

Country Status (1)

Country Link
CN (1) CN203206067U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108156830A (en) * 2015-10-08 2018-06-12 Abb瑞士股份有限公司 There is the motor of resonance circuit in axis ground connection

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108156830A (en) * 2015-10-08 2018-06-12 Abb瑞士股份有限公司 There is the motor of resonance circuit in axis ground connection

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130918

Termination date: 20210329