CN214755756U - Rotating shaft voltage weakening mechanism for three-phase variable frequency synchronous motor - Google Patents
Rotating shaft voltage weakening mechanism for three-phase variable frequency synchronous motor Download PDFInfo
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- CN214755756U CN214755756U CN202120894460.9U CN202120894460U CN214755756U CN 214755756 U CN214755756 U CN 214755756U CN 202120894460 U CN202120894460 U CN 202120894460U CN 214755756 U CN214755756 U CN 214755756U
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Abstract
The utility model belongs to the technical field of the motor technique and specifically relates to a three-phase frequency conversion synchronous motor is with pivot axle voltage weakening mechanism is related to, including setting up in the epaxial insulation support of commentaries on classics, insulation support includes the sleeve pipe body, and the sleeve pipe body is inside to be offered and to be used for the cover to establish the interior sleeve barrel chamber of pivot, and the inner chamber wall department in interior sleeve barrel chamber is equipped with a plurality of card fillets, and a plurality of bonding grooves have been seted up to sleeve pipe body outer pipe wall. The utility model discloses a three-phase frequency conversion synchronous motor is with pivot axle voltage weakening mechanism, insulating sleeve is established to the cover in its pivot, the card fillet on its insulating sleeve is spacing rather than the epaxial draw-in groove inlay card of rotating, rotor core cover locates on the outer pipe wall of insulating sleeve simultaneously, the bonding groove of seting up on the outer pipe wall of insulating sleeve is convenient for on the better bonding of its rotor core is fixed in insulating sleeve, this insulating sleeve locates between pivot and the rotor core, greatly reduced the epaxial axle voltage of pivot in the motor use, make the unable bearing oil film that punctures of axle voltage, avoid the bearing to be electrocorrosion to damage.
Description
Technical Field
The utility model belongs to the technical field of the motor technique and specifically relates to a mechanism is weakened to pivot axle voltage for three-phase frequency conversion synchronous motor.
Background
At present, a three-phase variable frequency synchronous motor of an elasticizer supplies power by using a PWM (pulse width modulation) variable frequency power supply, and one frequency converter drags a plurality of motors to work simultaneously; this drive mode will cause a shaft voltage to be generated between the motor shaft and the end cap; once the shaft voltage exceeds a certain value, the bearing oil film is broken down, and then discharge is generated to form current; the energy released by the partial discharge can generate high temperature; forming electric erosion grooves on the surfaces of the inner ring raceway, the outer ring raceway and the balls of the bearing; thereby increasing friction to generate noise and accelerating bearing failure. Bringing adverse effects to consumers.
In view of the above-mentioned drawbacks, the present designer has made active research and innovation to create a rotating shaft voltage reducing mechanism for a three-phase variable frequency synchronous motor, so that the rotating shaft voltage reducing mechanism has industrial application value.
Disclosure of Invention
In order to solve the technical problem, the utility model aims at providing a three-phase frequency conversion synchronous machine is with pivot axle voltage weakening mechanism, the cover is established insulating tube in its pivot, and the card fillet on its insulating tube is spacing rather than the epaxial draw-in groove inlay card of pivot, and on the insulating tube outer pipe wall was located to the rotor core cover simultaneously, the bonding groove of seting up on the insulating tube outer pipe wall was convenient for the better bonding of its rotor core and is fixed in on the insulating tube.
The utility model discloses a three-phase frequency conversion synchronous motor is with pivot axle voltage weakening mechanism, including setting up in the epaxial insulation support of commentaries on classics, and be connected with insulation support's pivot and connect rotor core and constitute the rotor, insulation support includes the sleeve pipe body, the inside interior sleeve chamber that is used for the cover to establish the pivot of offering of sleeve pipe body, the inner chamber wall department in interior sleeve chamber is equipped with a plurality of fillets, a plurality of bonding grooves have been seted up to sleeve pipe body outer pipe wall.
Furthermore, the rotor is inserted into the stator, the stator with the rotor inserted therein is inserted into the housing, and the two ends of the stator are buckled by the end cover to form the motor body.
Furthermore, the clamping and embedding strip is arranged on the inner cavity wall of the inner sleeve cavity, and the clamping and embedding strip is parallel to the axis of the inner sleeve cavity.
Furthermore, the bonding grooves are uniformly arranged on the outer pipe wall of the sleeve body and are annular grooves, and the cross sections of the annular grooves are perpendicular to the axis of the sleeve body.
Further, the insulating sleeve is made of a resin glass fiber material.
Furthermore, a clamping groove used for clamping and embedding the insertion strip for limiting is formed in the rotating shaft.
By the scheme, the invention at least has the following advantages:
the utility model discloses a three-phase frequency conversion synchronous motor is with pivot axle voltage weakening mechanism, insulating sleeve is established to the cover in its pivot, the card fillet on its insulating sleeve is spacing rather than the epaxial draw-in groove inlay card of rotating, rotor core cover locates on the outer pipe wall of insulating sleeve simultaneously, the adhesive groove of seting up on the outer pipe wall of insulating sleeve is convenient for on the better bonding of its rotor core is fixed in insulating sleeve, this insulating sleeve locates between pivot and the rotor core, greatly reduced the epaxial axle voltage of pivot in the motor use, make the unable bearing oil film that punctures of axle voltage, avoid the bearing to be electrocorrosion to damage, the life of motor bearing has been improved.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood and to be implemented in accordance with the content of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate a certain embodiment of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic structural view of the bushing of FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
fig. 4 is a sectional view at B-B in fig. 2.
In the attached drawing, 1 is a rotating shaft, 2 is an insulating sleeve, 3 is a rotor iron core, 4 is a sleeve body, 5 is an inner sleeve cavity, 6 is a clamping insertion strip, 7 is an adhesive groove, 8 is a rotor, 9 is a stator, 10 is a shell, 11 is an end cover, 12 is a motor body, and 13 is a clamping groove.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
Referring to fig. 1 and 2, a mechanism is weakened to pivot axle voltage for three-phase variable frequency synchronous motor according to a preferred embodiment of the present invention, including setting up insulation support 2 in pivot 1, and being connected with insulation support 2's pivot 1 and connecting rotor core 3 and constitute rotor 8, insulation support 2 includes sleeve body 4, sleeve body 4 is inside to be offered and to be used for the cover to establish pivot 1's inner sleeve chamber 5, the inner chamber wall department of inner sleeve chamber 5 is equipped with a plurality of fillets 6, a plurality of bonding grooves 7 have been seted up to sleeve body 4 outer pipe wall.
Referring to fig. 1 and 2, the rotor 8 is inserted into the stator 9, the stator 9 with the rotor 8 inserted therein is inserted into the housing 10, and the two ends of the stator are covered and fastened by the end cover 11 to form the motor body 12.
As shown in fig. 2 and 3, the snap strip 6 is disposed on the inner cavity wall of the inner sleeve cavity 5, and the snap strip 6 is parallel to the axis of the inner sleeve cavity 5. The clamping insertion strip 6 on the insulating sleeve 2 is clamped and limited with the clamping groove 13 on the rotating shaft 1.
Referring to fig. 3 and 4, the bonding grooves 7 are uniformly formed on the outer wall of the sleeve body 4, and the bonding grooves 7 are annular grooves whose cross sections are perpendicular to the axis of the sleeve body 4. The adhesive groove 7 formed in the outer tube wall of the insulating sleeve 2 facilitates the rotor core 3 to be adhered and fixed on the insulating sleeve 2 better.
As shown in fig. 1 and 2, the insulating sleeve 2 is made of a resin glass fiber material. The insulating sleeve 2 made of the resin glass fiber material is sleeved between the rotating shaft 1 and the rotor core 3, so that the shaft voltage on the rotating shaft in the use process of the motor is greatly reduced, the bearing oil film cannot be punctured by the shaft voltage, the bearing is prevented from being damaged by electric erosion, and the service life of the motor bearing is prolonged.
As shown in fig. 2 to 4, a slot 13 for limiting the position of the insertion strip 6 is formed on the rotating shaft 1.
The working principle of the utility model is as follows: insulation support 2 is established to the cover in its pivot 1, card fillet 6 on its insulation support 2 rather than the draw-in groove 13 inlay card spacing in the pivot 1, 3 covers of rotor core locate on the outer pipe wall of insulation support 2 simultaneously, the bonding groove 7 of seting up on the outer pipe wall of insulation support 2 is convenient for the better bonding of its rotor core 3 to be fixed in on insulation support 2, this insulation support 2 cover is located between pivot 1 and the rotor core 3, greatly reduced the epaxial axle voltage of pivot in the motor use, make the unable bearing oil film that punctures of axle voltage, avoid the bearing to be corroded the damage by the electricity, the life of motor bearing has been improved.
The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;
secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;
and finally: the above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and it should be noted that, for those skilled in the art, many modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (6)
1. The utility model provides a three-phase frequency conversion is pivot axle voltage weakening mechanism for synchronous motor which characterized in that: including setting up insulation support (2) on pivot (1), and be connected with pivot (1) of insulation support (2) and connect rotor core (3) and constitute rotor (8), insulation support (2) are including sleeve pipe body (4), sleeve pipe body (4) are inside to be offered and to be used for the cover to establish interior sleeve chamber (5) of pivot (1), the inner chamber wall department of interior sleeve chamber (5) is equipped with a plurality of fillets (6), a plurality of bonding groove (7) have been seted up to sleeve pipe body (4) outer pipe wall.
2. The rotating shaft voltage reducing mechanism for the three-phase variable frequency synchronous motor according to claim 1, characterized in that: the rotor (8) is inserted into the stator (9), the stator (9) with the rotor (8) inserted into the stator is inserted into the shell (10), and the two ends of the stator are buckled through the end covers (11) to form the motor body (12).
3. The rotating shaft voltage reducing mechanism for the three-phase variable frequency synchronous motor according to claim 1, characterized in that: the clamping and embedding strip (6) is arranged on the inner cavity wall of the inner sleeve cavity (5), and the clamping and embedding strip (6) is parallel to the axis of the inner sleeve cavity (5).
4. The rotating shaft voltage reducing mechanism for the three-phase variable frequency synchronous motor according to claim 1, characterized in that: the bonding grooves (7) are uniformly arranged on the outer pipe wall of the sleeve body (4), the bonding grooves (7) are annular grooves, and the cross sections of the annular grooves are perpendicular to the axis of the sleeve body (4).
5. The rotating shaft voltage reducing mechanism for the three-phase variable frequency synchronous motor according to claim 1, characterized in that: the insulating sleeve (2) is made of resin glass fiber materials.
6. The rotating shaft voltage reducing mechanism for the three-phase variable frequency synchronous motor according to claim 1, characterized in that: the rotating shaft (1) is provided with a clamping groove (13) for clamping and limiting the clamping insertion strip (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120894460.9U CN214755756U (en) | 2021-04-27 | 2021-04-27 | Rotating shaft voltage weakening mechanism for three-phase variable frequency synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120894460.9U CN214755756U (en) | 2021-04-27 | 2021-04-27 | Rotating shaft voltage weakening mechanism for three-phase variable frequency synchronous motor |
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| Publication Number | Publication Date |
|---|---|
| CN214755756U true CN214755756U (en) | 2021-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120894460.9U Active CN214755756U (en) | 2021-04-27 | 2021-04-27 | Rotating shaft voltage weakening mechanism for three-phase variable frequency synchronous motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4201803A1 (en) * | 2021-12-22 | 2023-06-28 | Torqeedo GmbH | Boat drive |
-
2021
- 2021-04-27 CN CN202120894460.9U patent/CN214755756U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4201803A1 (en) * | 2021-12-22 | 2023-06-28 | Torqeedo GmbH | Boat drive |
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