CN201533227U

CN201533227U - Wound-rotor type motor with novel rotor outgoing line fixing structure

Info

Publication number: CN201533227U
Application number: CN2009202546185U
Authority: CN
Inventors: 李双; 周丽玲; 霍永强; 贾健
Original assignee: Yongji Xinshisu Electric Equipment Co Ltd
Current assignee: CRRC Yongji Electric Co Ltd
Priority date: 2009-11-18
Filing date: 2009-11-18
Publication date: 2010-07-21
Anticipated expiration: 2019-11-18

Abstract

The utility model relates to a wound-rotor type motor, in particular to a wound-rotor type motor with a novel rotor outgoing line fixing structure, which resolves problems that the existing wound-rotor type motors are low in stability of outgoing lines and easy to cause grounding of outgoing lines and shafts or turn-to-turn short circuit due to deformation of outgoing lines. The wound-rotor type motor comprises a rotating shaft, a rotor coil and a rotor outgoing line welded on the rotor coil, a fastening ring is arranged on the rotating shaft, the rotor outgoing line penetrates out of an rotating shaft hole after passing through the fastening ring and is fixed on the fastening ring by clips, and then the rotor outgoing line is fixed in the rotating shaft hole after the gel filled inside the rotating shaft hole is heated and solidified. The wound-rotor type motor can resolve the problem of failure of fixing of the rotor outgoing lines, overcomes the shortage that the outgoing line is grounded, and avoids insulation failure and grounding of the rotor outgoing line caused by local overheat formed by eddy-current loss.

Description

Winding motor with novel rotor leading-out wire fixing structure

Technical field

The utility model relates to winding motor, relates in particular to the winding motor rotor leading-out wire, is specially the winding motor with novel rotor leading-out wire fixing structure.

Background technology

In the prior art, for small-sized wire-wound asynchronous motor rotor leading-out wire fixing structure, the general employing goes out to draw wire casing in the rotating shaft Surface Machining, then the direct colligation of rotor leading-out wire is fixed on the method in the rotating shaft.Little because of the less action of centrifugal force that is subjected in lead-out wire line footpath, can reach the effect of lead-out wire secure fixation by the method.And large power winding formula asynchronous machine is thicker because of lead-out wire line footpath, suffered centrifugal action is big, rotor leading-out wire adopts the line ball holder structure that lead-out wire is pressed in the rotating shaft usually, this structural manufacturing process is simple, easy to operate, but it is frequent for operating in speed change, especially operate in the motor between high velocity, utilize the mode of insulation pressing fixed rotor lead-out wire can't guarantee the reliability of lead-out wire, usually cause the lead-out wire and ground or the lead-out wire distortion that is coupling that turn-to-turn short circuit takes place.

Summary of the invention

The utility model for solve existing wire-wound asynchronous motor lead-out wire reliability low, easily cause the lead-out wire and ground or the lead-out wire distortion that is coupling that the problem of turn-to-turn short circuit takes place, a kind of winding motor with novel rotor leading-out wire fixing structure is provided.

The utility model is concrete to adopt following technical scheme to realize:

Winding motor with novel rotor leading-out wire fixing structure, comprise rotating shaft, the rotor coil that has shaft hole and be welded on rotor leading-out wire on the rotor coil, rotating shaft is provided with dead ring, process the waist shape wire casing at oblique angle on the dead ring, rotor leading-out wire penetrates shaft hole after fitting by dead ring and kidney slot, and with clamp lead-out wire is fixed on the dead ring, gel filled in the shaft hole, through being heating and curing rotor leading-out wire is fixed in the shaft hole.

Described dead ring is to be made by non-magnet_conductible material, by being connected with the rotating shaft interference fit, processes the waist shape wire casing at oblique angle on the dead ring, and rotor leading-out wire can automatic and kidney slot applying after passing axis hole.

After rotor leading-out wire penetrates dead ring, utilize clamp and bolt, use the locked spacer fastening at last, form rotor leading-out wire and on rotor, axially and radially retrain entirely firm being fixed on the dead ring of lead-out wire, fixing reliably to guarantee rotor leading-out wire.After inserting gel in the shaft hole, being fixed in the axis hole that rotor leading-out wire will be firm no longer moved, and so just well protected insulating barrier.Gel is selected a kind of pair of component gel for use, because two component gel solidification speed is very fast, helps the large batch of large-scale production of winding motor.

Compared with prior art, the beneficial effect that the winding motor tool with novel rotor leading-out wire fixing structure that the utility model provides is following, that is:

(1) because adopted the dead ring structure, the centrifugal force that bolt is born is broken down into perpendicular to dead ring and two power that are parallel to dead ring, reduced the influence that centrifugal force causes well, prevent the problem of the bolt looseness that causes because of the motor long-time running, reduced the solid failure problem of rotor leading-out wire.

(2) adopt traditional line ball seat fixed form, motor after operation a period of time rotor leading-out wire and the rotating shaft insulation damages that rubs cause ground connection.Dead ring because of be designed to rotating shaft have certain inclination angle and with firm the cooperating of rotating shaft, rotor leading-out wire can all be compressed, and has well overcome the defective of rotor leading-out wire ground connection.

(3) dead ring is made by non-magnet_conductible material simultaneously, has avoided forming the rotor leading-out wire failure of insulation ground connection that local overheating causes because of eddy current loss.

Description of drawings

Fig. 1 is the fixing structural representation of rotor leading-out wire with winding motor of novel rotor leading-out wire fixing structure described in the utility model;

Fig. 2 is the structural representation of dead ring described in the utility model;

Fig. 3 is the end view of Fig. 2;

Fig. 4 is the structural representation of clamp;

Fig. 5 is the end view of Fig. 4.

Among the figure: 1-rotor coil, 2-dead ring, 3-clamp, 4-rotor leading-out wire, 5-rotating shaft, 6-gel.

Embodiment

Winding motor with novel rotor leading-out wire fixing structure, comprise rotating shaft 5, the rotor coil 1 that has shaft hole and be welded on rotor leading-out wire 4 on the rotor coil 1, rotating shaft 5 is provided with dead ring 2, process the waist shape wire casing at oblique angle on the dead ring 2, rotor leading-out wire 4 penetrates shaft hole after fitting by dead ring 2 and kidney slot, and with clamp 3 lead-out wire is fixed on the dead ring 2, gel filled 6 in the shaft hole, through being heating and curing rotor leading-out wire 4 is fixed in the shaft hole.

Described dead ring 2 is to be made by non-magnet_conductible material, by being connected with rotating shaft 5 interference fit, processes the waist shape wire casing at oblique angle on the dead ring 2, and rotor leading-out wire 4 can automatic and kidney slot applying after passing axis hole.

After rotor leading-out wire 4 penetrates dead ring 2, utilize clamp 3 and bolt, use the locked spacer fastening at last, form rotor leading-out wire 4 and on rotor, axially and radially retrain entirely firm being fixed on the dead ring 2 of lead-out wire, fixing reliably to guarantee rotor leading-out wire 4.After inserting gel 6 in the shaft hole, being fixed in the axis hole that rotor leading-out wire 4 will be firm no longer moved, and so just well protected insulating barrier.Gel 6 is selected a kind of pair of component gel 6 for use, because two component gel solidification speed is very fast, helps the large batch of large-scale production of winding motor.

During the motor operation, the centrifugal force that rotor leading-out wire 4 is born can be delivered on the clamp 3, and clamp 3 is delivered on the dead ring 2 by bolt again.Be compared to traditional line ball seat rotor structure, because dead ring 2 has the oblique angle, the centrifugal force that bolt bore will be broken down into perpendicular to dead ring 2 and be parallel to 2 two power of dead ring, be tension stress and the shearing force that bolt is subjected to, this structure has well reduced the influence that bolt centrifugal force is caused, this greatly reduces rotor leading-out wire 4 solid failures for causing bolt looseness to play good effect because of the motor long-time running.

Dead ring 2 structures also have an advantage compared to the line ball holder structure, rotor leading-out wire 4 enters one section of axis hole, the line ball seat can not all compress rotor leading-out wire 4, can only compress a part (as will all compressing, itself will produce bigger centrifugal force the line ball seat), motor is after operation a period of time, and rotor leading-out wire 4 will partly throw away from the malcompression between line ball seat and axis hole, rotor leading-out wire 4 and rotating shaft 5 friction insulation damages cause ground connection.Dead ring 2 because of be designed to rotating shaft 5 have certain inclination angle and with rotating shaft 5 firm cooperating, rotor leading-out wire 4 can all be compressed, and has well prevented above defective.

Gel 6 is inserted in described rotating shaft 5, is because rotor leading-out wire 4 is longer in the shaft hole inside dimension, and convenient for making threading, it is bigger that shaft hole diameter can design, and during the motor operation, rotor leading-out wire 4 will rock in rotating shaft 5, rubs mutually with rotating shaft 5, causes damage in insulation.After inserting gel 6, what rotor leading-out wire 4 will be firm is fixed in the axis hole, and no longer insulating barrier is well protected in motion.

Claims

1. the winding motor that has novel rotor leading-out wire fixing structure, comprise the rotating shaft (5) that has shaft hole, rotor coil (1) and be welded on rotor leading-out wire (4) on the rotor coil (1), it is characterized in that: rotating shaft (5) is provided with dead ring (2), process the waist shape wire casing at oblique angle on the dead ring (2), rotor leading-out wire (4) passes shaft hole after fitting by dead ring (2) and kidney slot, and lead-out wire is fixed on the dead ring (2) with clamp (3), in the shaft hole gel filled (6), rotor leading-out wire (4) is fixed in the shaft hole through being heating and curing.

2. the winding motor with novel rotor leading-out wire fixing structure as claimed in claim 1 is characterized in that: described dead ring (2) is made by non-magnet_conductible material, by being connected with rotating shaft (5) interference fit.

3. the winding motor with novel rotor leading-out wire fixing structure as claimed in claim 1 or 2 is characterized in that: described gel (6) can be selected two component gels for use.