Method for repairing insulating supporting block of collector rings of large direct-current motor
A technology of DC motor and bus ring, which is applied in the field of repairing the insulating support block of the bus ring of large DC motor, can solve the problems of offline repair of the motor, on-site maintenance, difficult repair, long construction period, etc., so as to facilitate on-site maintenance and replacement, and overcome the structural And the effect of repairing defects and reducing repair costs
Active Publication Date: 2020-07-24
SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
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Problems solved by technology
The advantage is good electrical and mechanical performance; the disadvantage is that the motor needs to be repaired offline, the construction period is long, and on-site maintenance and repair are difficult
Method used
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[0022] Example figure 1 and figure 2 As shown, the method for repairing the insulating support block of the large-scale DC motor bus ring of the present invention includes the following steps:
[0023] Step 1. Remove the binding tape and the old insulating support between the DC motor positive collector ring and the negative collector ring, and clean the collector ring to ensure that there is no charged dust on the surface;
[0024] Step 2: Make an insulating support block. The insulating support block includes a first stay 1 and a second stay 2. The first stay 1 and the second stay 2 are arranged in parallel and the middle part is penetrated by a bolt 3 for fastening. The second Vertical grooves 11 and 21 are respectively symmetrically arranged on the front ends of the adjacent surfaces of the first stay 1 and the second stay 2, the rear end of the first stay 1 is provided with an upwardly opening groove 12, and the rear end of the second stay 2 is provided with There is a...
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The invention discloses a method for repairing an insulating supporting block of collector rings of a large direct-current motor. The method comprises the steps that firstly, a binding tape and an oldinsulating supporting block of the collector rings of the direct-current motor are removed and cleaned; an insulating supporting block comprising a first supporting strip and a second supporting strip is manufactured, vertical grooves are formed in the front ends of the first supporting strip and the second supporting strip, a groove with an upward opening is formed in the rear end of the first supporting strip, and a groove with a downward opening is formed in the rear end of the second supporting strip; after the first supporting strip and the second supporting strip are manufactured and formed, the surfaces are cleaned and impregnated with insulating paint, the first supporting strip and the second supporting strip are arranged between the positive collector ring and the negative collector ring, a copper busbar connected with the positive collector ring is embedded into the front-end groove, and the negative collector ring is clamped by the rear-end groove from top to bottom; and bolts are used for fastening to complete the repair of the insulating support block. According to the method, the defects of a traditional insulating supporting block structure and repair are effectively overcome; off-line repair of the motor is avoided by manufacturing the insulating supporting block with a simple structure; on-site maintenance and replacement of the insulating supporting block are facilitated; the maintenance efficiency is improved; and the motor repair cost is reduced.
Description
technical field [0001] The invention relates to the technical field of motors, in particular to a method for repairing an insulating support block of a busbar of a large DC motor. Background technique [0002] DC motors have good speed regulation performance and overload capacity, and are widely used in various production lines, such as hot rolling R series, F series rolling mills, cold rolling stand motors, etc. Due to the long-term online operation of the motor, the insulation of various parts such as windings is seriously aged. [0003] The armature circuit current of large DC motors is very large. For example, the rated capacity of the 2050 hot-rolled R2 motor is 6200KW, and the armature current reaches 6325A; the rated capacity of the F series rolling mill motor is 5000KW, and the armature current reaches 5085A; The rated capacity is 1500KW, and the armature current is 1720A. Therefore, a multi-circuit parallel structure is mostly used, and a bus ring structure is ado...
Claims
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IPC IPC(8): H02K15/00H02K15/12
CPCH02K15/0006H02K15/12
Inventor 杨广杨志华高峰
Owner SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE