CN114337070B - Three-phase AC asynchronous motor - Google Patents
Three-phase AC asynchronous motor Download PDFInfo
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- CN114337070B CN114337070B CN202111645153.8A CN202111645153A CN114337070B CN 114337070 B CN114337070 B CN 114337070B CN 202111645153 A CN202111645153 A CN 202111645153A CN 114337070 B CN114337070 B CN 114337070B
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Abstract
The invention provides a three-phase alternating current asynchronous motor, belonging to the field of motor manufacturing; the invention includes: three groups of rollers, a shell and a base; a motor shaft is arranged on the shell; the three groups of rollers are symmetrically distributed relative to the center of the motor shaft and are all fixed on the shell; three sets of rollers include: two lateral rollers and a top roller; the two sides of the base are symmetrically provided with contact arms, and the shell is connected with the two contact arms through two groups of lateral rollers; the contact surfaces of the two contact arms and the roller are inclined surfaces, and the clamp between the two inclined surfaces is 60 degrees; fastening bolts are arranged on two sides of the base, a steel wire rope is arranged between the two fastening bolts, and a lower pressing sleeve is arranged on the steel wire rope; the top roller is embedded in the lower pressing sleeve. The invention not only plays a role of fixing, but also can effectively release precession energy when the shell is fixed on the base through the contact of the roller with the angle of 120 degrees and the base.
Description
Technical Field
The invention relates to a motor manufacturing technology, in particular to a three-phase alternating current asynchronous motor, and belongs to the technical field of motor manufacturing.
Background
The asynchronous AC motor is an electric driving device for converting electric energy into mechanical energy, and is mainly composed of stator, rotor and air gap between them, after the stator winding is connected to three-phase AC power supply, it can produce rotating magnetic field and cut rotor to obtain torque.
The alternating current asynchronous motor is famous for high reliability, long service life and strong universality, can provide various cooling types, protection grades and various models, and can be suitable for corrosive environmental conditions and dangerous application occasions.
Among the prior art, alternating current asynchronous machine can produce violent vibration in the use, and the base of general alternating current asynchronous machine bottom is provided with damping mat mostly, but because alternating current asynchronous machine can take place the axial precession of cyclicity in the operation process, current damping mat can only absorb vertical and horizontally vibration, and the absorption vibration makes the antifatigue ability that relies on the fastener be the cost, can lead to the motor noise big after final long-term operation, the fastener is not hard up, influences holistic life-span.
Disclosure of Invention
The invention provides a novel three-phase alternating current asynchronous motor, which can immediately release the vibration of a shell by arranging a base which is not fixedly connected, and cannot generate adverse effect on the operation, so as to solve the technical problems that a fastener is easy to damage and the service life is low after the motor operates for a long time in the prior art.
The three-phase alternating current asynchronous motor of the embodiment of the invention comprises: three groups of rollers, a shell and a base; a motor shaft is arranged on the shell; the three groups of rollers are symmetrically distributed relative to the center of the motor shaft and are all fixed on the shell; three sets of the gyro wheel include: two lateral rollers and a top roller;
contact arms are symmetrically arranged on two sides of the base, and the shell is connected with the two contact arms through two groups of lateral rollers; the contact surfaces of the two contact arms and the lateral roller are inclined surfaces, and the clamp between the two inclined surfaces is 60 degrees;
fastening bolts are arranged on two sides of the base, a steel wire rope is arranged between the two fastening bolts, and a lower pressing sleeve is arranged on the steel wire rope; the top roller is embedded in the lower pressing sleeve.
The three-phase alternating current asynchronous motor is characterized in that a damping rod is fixed at the bottom of the shell and is vertical to the motor shaft; the base is provided with a positioning hole;
the bottom of the base is provided with a vibration reduction accommodating cavity, and a horizontally transverse vibration reduction plate is arranged in the vibration reduction accommodating cavity; the shell is inserted into the positioning hole through the damping rod, so that the free end of the damping rod penetrates through the positioning hole to be connected with the damping plate; the damping plate is an arc-shaped structural plate.
The three-phase alternating current asynchronous motor is characterized in that two sides of the vibration reduction plate are abutted against two sides of the vibration reduction cavity; the damping plate is characterized in that two compression springs are arranged on the upper surface of the damping plate, and the damping plate is connected with the base through the compression springs.
The three-phase alternating current asynchronous motor comprises a vibration damping rod, a vibration damping device and a control device, wherein the vibration damping rod comprises a fixed end and a free end, the fixed end is a hard alloy rod, and the free end is an elastic rod;
the free end is of a conical structure, and a conical hole is formed in the vibration reduction plate; the free end is connected with the damping plate through the tapered hole.
The three-phase alternating-current asynchronous motor is characterized in that the base is provided with an arc-shaped groove, and a damping rubber pad is arranged in the arc-shaped groove; the shell is in contact with the arc-shaped groove through the damping rubber pad;
the locating hole is arranged at the bottom of the arc-shaped groove.
The three-phase alternating current asynchronous motor is characterized in that the fastening bolts are horizontally arranged on two sides of the base, and the steel wire ropes are wound on the fastening bolts;
and a locking device is arranged between the fastening bolt and the base.
The three-phase alternating current asynchronous motor is characterized in that the lower pressing sleeve is a cavity with an opening at the bottom; the top roller is positioned in the cavity and is propped against the two side walls of the cavity.
The three-phase ac asynchronous motor as described above, wherein each set of said rollers comprises: the mounting block and the two parallel rollers are arranged on the mounting block; and the two rollers are fixed on the shell through the mounting blocks.
The three-phase alternating current asynchronous motor is characterized in that the damping rubber pad is a metal foam plate, and the damping plate is of a multilayer composite structure.
The three-phase alternating current asynchronous motor is characterized in that two fixed seats are arranged on two sides of the bottom of the base, and each fixed seat is provided with a screw hole;
the fixed seats are positioned on two sides of the vibration reduction accommodating cavity.
In the embodiment of the invention, the roller with the angle of 120 degrees is contacted with the base, and the whole shell is fixed on the base by using the steel wire rope, so that the fixing effect is achieved, and rigid shock absorption connection is avoided; the invention can also fix the shell on the base and simultaneously can make the precession of the shell displace around the direction of the motor shaft, thereby effectively releasing the energy of the precession; therefore, the invention not only can effectively absorb the vibration of the shell, but also can release the precession in time, thereby reducing the abrasion of the base to the fastening piece, greatly prolonging the service life of the fastening piece of the shell, and improving the heat dissipation effect in the long-term operation process.
Drawings
Fig. 1 is a side view structural diagram of a three-phase ac asynchronous motor according to an embodiment of the present invention.
Detailed Description
The three-phase alternating current asynchronous motor of the invention can be made of and is not limited to the following materials and components, for example: steel casing, wire rope, foamed metal, carbide cylinder, bolt, rubber pad etc..
Fig. 1 is a side view of a three-phase ac asynchronous motor according to an embodiment of the present invention; the three-phase alternating current asynchronous motor of the embodiment of the invention comprises: three groups of rollers, a shell 1 and a base 2; a motor shaft 10 is arranged on the shell 1; the three groups of rollers are symmetrically distributed relative to the center of the motor shaft 10 and are all fixed on the shell 1; three sets of the rollers include: two lateral rollers and a top roller; the two lateral rollers are positioned at two sides of the bottom of the shell 1, and the top roller is positioned right above the shell 1.
Specifically, in order to increase the area of contact of gyro wheel and base 2, be convenient for simultaneously installation and hoist and mount, every group the gyro wheel includes: a mounting block 11 and two mutually parallel rollers 12; both of the rollers 12 are fixed to the housing 1 by the mounting block 11. Two cylinders 12 are parallel to each other and are all installed on the installation block 11 through a rotating shaft, and the two cylinders can play a role of a large-diameter cylinder, so that whether the cylinder can better pass through precession energy or not when the casing is in precession can be realized. The roller is generally made of PU material.
Contact arms are symmetrically arranged on two sides of the base 2, and the shell 1 is connected with the two contact arms through two groups of lateral rollers; the contact surfaces of the two contact arms and the lateral roller are inclined surfaces, and the clamp between the two inclined surfaces is 60 degrees; thereby can be fine correspond two lateral roller that the contained angle is 120 degrees.
At this moment, because two contact surfaces are corresponding inclined planes, in the actual installation process, the casing 1 can be fine and corresponding to two inclined planes to because the gyro wheel that two cylinders are constituteed is adopted, the location installation is more convenient, only need let casing 1 place on base 2, and with two inclined planes contact can.
Fastening bolts 30 are mounted on two sides of the base 2, a steel wire rope 3 is arranged between the two fastening bolts 30, and a lower pressing sleeve 13 is arranged on the steel wire rope 3; the top roller is embedded in the lower pressing sleeve 13.
In the actual installation, after casing 1 placed on two inclined planes on base 2, compress tightly whole pushing sleeve 13 on base 2 through wire rope 3 this moment, pushing sleeve 13's both ends down all are wire rope 3, not only can guarantee that casing 1 does not break away from base 2, can also absorb the upper and lower vibration and the horizontal vibration of casing 1.
More importantly, in the embodiment of the invention, the roller with the angle of 120 degrees is in contact with the base, and the whole shell is fixed on the base by using the steel wire rope, so that the fixing effect is achieved, and rigid damping connection is avoided; the invention can also fix the shell on the base, and because the shell 1 can periodically reversely rotate relative to the motor shaft, the reverse rotation of the shell can generate slight reverse rotation displacement and periodic precession action around the direction of the motor shaft, thereby effectively releasing the precession energy; because three groups of rollers of the whole machine shell 1 are distributed in a central symmetry way, even if the machine shell rotates axially, the connection between the motor and external equipment and the coaxiality are not influenced, and the machine shell is reliable in the using process.
Therefore, the invention not only can effectively absorb the vibration of the shell, but also can release the precession in time, thereby reducing the abrasion of the base to the fastening piece, greatly prolonging the service life of the fastening piece of the shell, and improving the heat dissipation effect in the long-term operation process.
In the three-phase ac asynchronous motor of the present embodiment, a damping rod 14 is fixed at the bottom of the housing 1, the damping rod 14 is perpendicular to the motor shaft 10, and in general, the damping rod 14 is also perpendicular to the horizontal plane; the base 2 is provided with a positioning hole; when the positioning holes can guarantee hoisting, the damping rods 14 can be inserted, hoisting and positioning are facilitated, and the installation speed is increased.
The bottom of the base 2 is provided with a vibration reduction accommodating cavity, and a horizontally transverse vibration reduction plate 4 is arranged in the vibration reduction accommodating cavity; the shell 1 is inserted into the positioning hole through the damping rod 14, so that the free end of the damping rod 14 passes through the positioning hole to be connected with the damping plate 4; the damping plate 4 is an arc-shaped structural plate.
The damping plate 4 is generally a multi-layer composite spring steel plate, and the arc shape of the damping plate is concave and is contacted with the damping rod 14.
In actual use, high-frequency vibration can also occur in the casing 1 of the motor, the high-frequency vibration can generate great noise, and the high-frequency vibration also generates a great amount of friction heat, so that the temperature of the motor fastener is increased. In order to suppress and rationalise these noise and frictional heat, the present embodiment uses a damping rod 14, which transmits these vibrations into the damping chamber and absorbs them by means of the damping plate 4.
Because the vibration reduction plate 4 is positioned in the vibration reduction containing cavity at the bottom of the base 2 (the bottom of the base 2 is generally a concrete structure or a high-strength support frame), vibration noise is not easy to be transmitted to the outside, and vibration energy can be converted into noise and friction heat through the vibration reduction plate 4, and the noise and the friction heat are absorbed by the vibration plate 4, so that the high-frequency vibration noise of the casing 1 is reduced to the maximum extent, and the service life of the base fastener is further prolonged.
Preferably, two sides of the vibration damping plate 4 are abutted against two sides of the vibration damping cavity; two compression springs 5 are arranged on the upper surface of the vibration reduction plate 4, and the vibration reduction plate 4 is connected with the base 2 through the compression springs. The compression spring can absorb the vibration of the damping plate 4 in the vertical direction; after the two sides of the damping plate 4 are abutted against the two sides of the damping accommodating cavity, the damping plate 4 is an arc-shaped structural plate, and the horizontal vibration of the damping plate is mainly realized by the deformation of the damping plate in the vertical direction, so that the service life of the damping plate is prolonged.
Preferably, in order to enhance the transmission effect of the high-frequency vibration, the vibration damping rod 14 includes a fixed end and the free end, the fixed end is a hard alloy rod, and the free end is an elastic rod; this ensures that the free end of the damping rod 14 can undergo high frequency vibrations of a large amplitude, improving the efficiency of transmitting and eliminating high frequency vibrations.
The free end is of a conical structure, and a conical hole is formed in the vibration damping plate 4; the free end is connected to the damping plate 4 through the tapered hole.
The tapered holes are designed to allow various areas and layers of the damping plate 4 to contact the damping rods 14, thereby facilitating the release of high frequency vibrations.
In the three-phase alternating current asynchronous motor of the embodiment, the base 1 is provided with an arc-shaped groove, and a damping rubber pad 15 is arranged in the arc-shaped groove; the shell 1 is contacted with the arc-shaped groove through the damping rubber pad 15; the cushion 15 is generally made of metal foam, preferably copper metal foam, and has excellent anti-vibration effect and heat dissipation performance, and the metal is low in price, high in strength and large in friction coefficient.
The locating hole is arranged at the bottom of the arc-shaped groove, so that the locating is convenient.
In the three-phase alternating current asynchronous motor of the embodiment, the fastening bolts 30 are horizontally installed on two sides of the base 2, and the steel wire rope 3 is wound on the fastening bolts 30; the fastening bolt 30 is used to tension the wire rope 3.
A locking device, generally a positioning pin or a positioning screw, is disposed between the fastening bolt 30 and the base 2 to prevent the fastening bolt from loosening.
In the three-phase alternating current asynchronous motor of the embodiment, the lower pressing sleeve 13 is a cavity with an opening at the bottom; the top roller is located in the cavity and abuts against the two side walls of the cavity, so that the top roller can be well fixed on the steel wire rope 3.
In the three-phase alternating current asynchronous motor of the embodiment, two fixing seats 21 are arranged on two sides of the bottom of the base 2, and a screw hole 22 is arranged on each fixing seat 21; the bolt holes 22 are typically used to connect anchor screws.
The fixing seats 21 are positioned on two sides of the vibration reduction accommodating cavity, so that space is saved, and the vibration reduction plate 4 in the vibration reduction accommodating cavity can well vibrate and generate noise due to the fact that the fixing seats 21 have high structural strength, and cannot be transmitted to the fixing seats 21.
In addition, the three-phase alternating current asynchronous motor has the advantages of low manufacturing cost, delicate configuration, compact structural design, stable finished product quality, convenient maintenance and hoisting, and is suitable for various modified high-power three-phase asynchronous motors.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments. Through the above description of the embodiments, those skilled in the art will clearly understand that the above embodiment method can be implemented by some modifications plus the necessary general technical overlap; of course, the method can also be realized by simplifying some important technical features in the upper level. Based on such understanding, the technical solution of the present invention essentially or contributing to the prior art is: the whole structure and the connection mode are matched with the structure of each embodiment of the invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A three-phase alternating current asynchronous machine, comprising: three groups of rollers, a shell and a base; a motor shaft is arranged on the shell; the three groups of rollers are symmetrically distributed relative to the center of the motor shaft and are all fixed on the shell; three sets of the gyro wheel include: two lateral rollers and a top roller;
contact arms are symmetrically arranged on two sides of the base, and the shell is connected with the two contact arms through two groups of lateral rollers; the contact surfaces of the two contact arms and the lateral roller are inclined surfaces, and the clamp between the two inclined surfaces is 60 degrees;
fastening bolts are arranged on two sides of the base, a steel wire rope is arranged between the two fastening bolts, and a lower pressing sleeve is arranged on the steel wire rope; the top roller is embedded in the lower pressing sleeve;
a vibration damping rod is fixed at the bottom of the shell and is vertical to the motor shaft; the base is provided with a positioning hole;
the bottom of the base is provided with a vibration reduction accommodating cavity, and a horizontally transverse vibration reduction plate is arranged in the vibration reduction accommodating cavity; the shell is inserted into the positioning hole through the damping rod, so that the free end of the damping rod penetrates through the positioning hole to be connected with the damping plate; the vibration damping plate is an arc-shaped structural plate;
two sides of the vibration reduction plate are abutted against two sides of the vibration reduction accommodating cavity; the damping plate is characterized in that two compression springs are arranged on the upper surface of the damping plate, and the damping plate is connected with the base through the compression springs.
2. The asynchronous three-phase alternating current motor according to claim 1, wherein said damping rod comprises a fixed end and said free end, said fixed end being a hard metal rod and said free end being an elastic rod;
the free end is of a conical structure, and a conical hole is formed in the vibration reduction plate; the free end is connected with the damping plate through the tapered hole.
3. The three-phase alternating current asynchronous motor according to claim 1, wherein the base is provided with an arc-shaped groove, and a damping rubber pad is arranged in the arc-shaped groove; the shell is in contact with the arc-shaped groove through the damping rubber pad;
the locating hole is opened at the bottom of the arc-shaped groove.
4. A three-phase ac asynchronous machine as claimed in any of claims 1 to 3, wherein said fastening bolts are horizontally mounted on both sides of said base, said fastening bolts being wound with said wire rope;
and a locking device is arranged between the fastening bolt and the base.
5. A three-phase alternating current asynchronous machine according to any of the claims 1 to 3, characterized in that said lower pressure sleeve is a cavity with an open bottom; the top roller is positioned in the cavity and is propped against the two side walls of the cavity.
6. A three-phase alternating current asynchronous machine according to any of the claims 1 to 3, characterized in that each set of said rollers comprises: the mounting block and the two parallel rollers are arranged on the mounting block; and the two rollers are fixed on the shell through the mounting blocks.
7. A three-phase ac asynchronous machine according to claim 3, characterized in that said shock absorbing rubber mat is a metal foam plate, and said vibration absorbing plate is a multilayer composite structure.
8. The three-phase alternating current asynchronous motor according to claim 1, wherein two fixed seats are arranged on two sides of the bottom of the base, and each fixed seat is provided with a screw hole; the fixed seats are positioned on two sides of the vibration reduction accommodating cavity.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111645153.8A CN114337070B (en) | 2021-12-30 | 2021-12-30 | Three-phase AC asynchronous motor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111645153.8A CN114337070B (en) | 2021-12-30 | 2021-12-30 | Three-phase AC asynchronous motor |
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| CN114337070A CN114337070A (en) | 2022-04-12 |
| CN114337070B true CN114337070B (en) | 2022-11-04 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN213693276U (en) * | 2020-11-06 | 2021-07-13 | 苏州市三角精密机械有限公司 | Lathe bed motor fixing assembly |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US8827032B1 (en) * | 2012-06-07 | 2014-09-09 | Tod M. Kean | Apparatus and method for attenuating sound generated by machinery |
| FR3032746B1 (en) * | 2015-02-16 | 2018-08-03 | Valeo Equipements Electriques Moteur | ROTATING ELECTRIC MACHINE WITH BELT RECEIVING PULLEY AND BELT TENSION ADJUSTING DEVICE |
| CN205791987U (en) * | 2016-06-01 | 2016-12-07 | 江西双威电机有限公司 | A kind of motor of good damping effect |
| CN213521515U (en) * | 2020-08-25 | 2021-06-22 | 扬州洁晨机电科技有限公司 | Stable form motor that washing machine was used |
| CN213341878U (en) * | 2020-10-14 | 2021-06-01 | 阜宁广兴机械有限公司 | Motor with protection function |
| CN215071955U (en) * | 2021-01-11 | 2021-12-07 | 佛山市切尔西电器有限公司 | Motor with shock-absorbing function |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN213693276U (en) * | 2020-11-06 | 2021-07-13 | 苏州市三角精密机械有限公司 | Lathe bed motor fixing assembly |
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