CN114823043A - Non-contact shaftless roller and installation and control method thereof - Google Patents
Non-contact shaftless roller and installation and control method thereof Download PDFInfo
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- CN114823043A CN114823043A CN202210434920.9A CN202210434920A CN114823043A CN 114823043 A CN114823043 A CN 114823043A CN 202210434920 A CN202210434920 A CN 202210434920A CN 114823043 A CN114823043 A CN 114823043A
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000009434 installation Methods 0.000 title abstract description 6
- 230000005484 gravity Effects 0.000 claims description 11
- 230000009471 action Effects 0.000 claims description 9
- 230000033001 locomotion Effects 0.000 claims description 9
- 230000003068 static effect Effects 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 5
- 230000001133 acceleration Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
- G01M13/045—Acoustic or vibration analysis
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
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- Acoustics & Sound (AREA)
- General Physics & Mathematics (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
The invention relates to a non-contact shaftless roller and an installation and control method thereof, wherein the non-contact shaftless roller comprises an outer barrel and an inner barrel, wherein the outer barrel comprises an outer barrel body and outer barrel baffles positioned at two ends of the outer barrel body; an outer barrel magnet is arranged on the arc-shaped wall of the outer barrel, and an outer baffle magnet is arranged on the outer barrel baffle; the inner cylinder comprises an inner cylinder body and inner cylinder baffles positioned at two ends of the inner cylinder body; and the arc-shaped wall of the inner barrel body is provided with an inner barrel body magnet, and the inner barrel baffle is provided with an inner baffle magnet. The invention does not need to fix the rotor with other structures, and is convenient to install; the structure is not easy to wear, and the service life is prolonged.
Description
Technical Field
The invention relates to the technical field of rotors, in particular to a non-contact shaftless roller and an installation and control method thereof.
Background
Drum structures are widely used in various mechanical devices, such as washing machines, conveyors, hay cutters, mining machines, separation and extraction devices, and the like. The drum can be divided into two types, a shaft type and a shaftless type.
The spindle having the shaft drum is subjected to a load, may be subjected to various bending moments and torques, and pressure is inevitably generated between the shaft as a rotating member and a fixed member, thereby generating friction during rotation, thereby wearing the members and also generating noise. Although various lubrication measures are taken during actual operation of the device, losses and noise are still inevitably generated. Therefore, the material of the shaft is generally limited and requires a certain amount of processing. At present, rolled or forged carbon steel and alloy steel are generally adopted for the shaft of the transmission roller, and the requirement for some special shafts may be higher. The surface of the shaft also typically requires heat treatment or strengthening to improve its mechanical properties and wear resistance. And because of the shaft, the possibility of eccentricity is inevitable, and the eccentricity can increase the abrasion, thereby reducing the service life. The shaft roller mainly has the following defects: certain requirements are made on the material of the shaft; the rotating part and the fixed part can generate friction, and abrasion and noise are generated; the eccentricity problem cannot be avoided, the abrasion and noise problems can be more serious, and the service life is shortened.
The shaftless roller has no shaft, so that the problem of eccentricity does not exist, and the problem of shaft material is not considered. But shaftless cylinder still can be fixed in on the device, and drive arrangement drives the cylinder and rotates, and like wheel transmission drives the cylinder through the mode similar to gear drive, and chain drive drives the cylinder through the mode of chain or drive belt, produces the contact and still can lead to wearing and tearing and noise to reduce life.
Disclosure of Invention
The applicant aims at the defects in the prior art and provides a non-contact shaftless roller and a mounting and control method thereof. The transmitted data is collected through the target state of the roller and the force sensor, and the magnetic force of the electromagnet is adjusted by using a vector control system, so that the starting, accelerating, stabilizing, decelerating and stopping processes of the roller are realized, and the stator and the rotor are kept in a non-contact state in the process.
The technical scheme adopted by the invention is as follows:
a non-contact type shaftless roller comprises an outer barrel and an inner barrel, wherein the outer barrel comprises an outer barrel body and outer barrel baffles positioned at two ends of the outer barrel body; an outer barrel magnet is arranged on the arc-shaped wall of the outer barrel, and an outer baffle magnet is arranged on the outer barrel baffle;
the inner cylinder comprises an inner cylinder body and inner cylinder baffles positioned at two ends of the inner cylinder body; and the arc-shaped wall of the inner barrel body is provided with an inner barrel body magnet, and the inner barrel baffle is provided with an inner baffle magnet.
The outer cylinder magnet is arranged on the inner wall of the arc-shaped wall of the outer cylinder; the inner cylinder magnet is arranged on the outer surface of the arc-shaped wall of the inner cylinder.
The outer cylinder baffle is vertically folded from the outer cylinder body to the circle center; the inner cylinder baffle is vertically folded from the inner cylinder body to one side of the outer cylinder body; the outer baffle magnet and the inner baffle magnet are positioned on the same circumferential line.
In the outer cylinder and the inner cylinder,
a permanent magnet is adopted to correspond to the action of the rotor;
the permanent magnet and the electromagnet are arranged corresponding to the action of the stator, wherein the permanent magnet is arranged on the cylinder body, and the electromagnet is arranged on the baffle;
and a force sensor is also arranged on the cylinder body corresponding to the electronic action.
A side baffle of the outer barrel is detachably arranged.
A method for mounting a non-contact shaftless roller comprises the following steps:
the first step is as follows: magnets and force sensors are correspondingly arranged on the inner cylinder body and the outer cylinder body;
the second step is that: and (3) sleeving and installing the prefabricated inner cylinder body and the outer cylinder body obtained in the first step, and then sealing an outer cylinder baffle on one side of the outer cylinder body.
A control method of a non-contact shaftless roller comprises the following steps:
a static state: outputting corresponding current to the electromagnet according to the parameters obtained by the force sensor, and controlling the magnetic force of the electromagnet; at the moment, the magnetic force and the gravity of the rotor are in a force balance state;
and (3) starting: starting acceleration, adjusting the current of the electromagnet and controlling the magnetic force of the electromagnet; at the moment, the magnetic force and the gravity of the rotor form a tangential driving force of the rotor, and the rotor rotates;
steady state: when the rotating speed of the rotor reaches the expected rotating speed, controlling the flow of the electromagnet, and adjusting the magnetic force to enable the rotor to only bear radial force at the moment; at the moment, the rotor loses tangential driving force and keeps a static stable state;
a deceleration state: the current of the electromagnet is changed, so that the magnetic force of the electromagnet is changed, at the moment, the roller drum is subjected to a tangential force opposite to the rotation direction of the roller drum, and the rotor is gradually decelerated until the rotor stops rotating; at this time, the magnetic force and the gravity of the rotor keep a suspension balance state again.
When the permanent magnet of the rotor rotates to be closest to the permanent magnet of the stator, the rotating speed of the rotor is obtained according to the time interval of the force peak value collected by the sensor.
The magnets on the inner barrel body and the outer barrel body are used for controlling the circumferential state of the rotor, so that the rotation of the rotor and the motion state of the rotor in a vertical plane are realized;
and magnets on the outer barrel baffle and the inner barrel baffle are used for controlling the axial state of the rotor, so that the axial motion state of the rotor is realized.
The invention has the following beneficial effects:
the invention has compact and reasonable structure, convenient operation, convenient installation and no need of fixing the rotor with other structures;
because the rotor is not in contact with other parts, no friction exists, and the noise in the running process is greatly reduced; the structure is not easy to wear, and the service life is prolonged;
through vector control, not only can the circumferential rotation of the rotor be realized, but also the up-and-down motion of the rotor in the vertical direction and the horizontal motion in the same vertical plane can be realized; the start-stop of the rotor can also be controlled by controlling the direction of the tangential force.
The invention can also obtain the rotor speed parameter through the time interval of the force peak value acquired by the sensor. And judging the state of the roller according to the data of the force sensor, adjusting the magnetic force of the electromagnet, realizing real-time interactive control, and keeping the stator and the rotor in a non-contact state in the process.
Drawings
Fig. 1 is a schematic view of the overall structure of a non-contact roller according to the present invention.
Fig. 2 is a schematic structural diagram of the non-contact roller inner cylinder of the invention.
Fig. 3 is a schematic structural diagram of the cylinder body of the non-contact type roller outer cylinder.
Fig. 4 is a schematic structural diagram of an inner cylinder body of the non-contact roller with an inner cylinder baffle plate.
Fig. 5 is an overall sectional view of the non-contact roller of the present invention.
Fig. 6 is an overall longitudinal sectional view of the non-contact roller according to the present invention.
Fig. 7 is a flow chart of the working principle of the present invention.
Wherein: 1. an outer cylinder; 2. an inner barrel;
101. an outer cylinder body; 102. an outer cylinder baffle; 103. an outer cylinder magnet; 104. an outer baffle magnet;
201. an inner cylinder body; 202. an inner cylinder baffle; 203. an inner cylinder magnet; 204. an inner baffle magnet.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1-7, the non-contact shaftless roller of the present embodiment comprises an outer cylinder 1 and an inner cylinder 2, wherein the outer cylinder 1 comprises an outer cylinder body 101 and outer cylinder baffles 104 positioned at two ends of the outer cylinder body 101; an outer cylinder magnet 103 is arranged on the arc-shaped wall of the outer cylinder body 101, and an outer baffle magnet 104 is arranged on the outer cylinder baffle 104;
the inner cylinder 2 comprises an inner cylinder body 201 and inner cylinder baffles 202 positioned at two ends of the inner cylinder body 201; an inner cylinder magnet 203 is arranged on the arc-shaped wall of the inner cylinder 201, and an inner baffle magnet 204 is arranged on the inner cylinder baffle 202.
The outer cylinder magnet 103 is arranged on the inner wall of the arc wall of the outer cylinder 1; the inner cylinder magnet 203 is mounted on the outer surface of the arc-shaped wall of the inner cylinder 2.
The outer cylinder baffle 104 is vertically folded from the outer cylinder body 101 to the center of a circle; the inner cylinder baffle 202 is vertically folded from the inner cylinder 201 to one side of the outer cylinder 101; the outer barrier magnet 104 and the inner barrier magnet 204 are located on the same circumferential line.
In the outer cylinder 1 and the inner cylinder 2,
a permanent magnet is adopted to correspond to the action of the rotor;
the permanent magnet and the electromagnet are arranged corresponding to the action of the stator, wherein the permanent magnet is arranged on the cylinder body, and the electromagnet is arranged on the baffle;
and a force sensor is also arranged on the cylinder body corresponding to the electronic action.
A side baffle of the outer cylinder 1 is detachably arranged.
The installation method of the non-contact shaftless roller comprises the following steps:
the first step is as follows: magnets and force sensors are correspondingly arranged on the inner cylinder body 201 and the outer cylinder body 101;
the second step: sleeving and installing the prefabricated inner cylinder body 201 and the outer cylinder body 101 obtained in the first step, and then sealing the outer cylinder baffle 104 on one side of the outer cylinder body 101.
The control method of the non-contact type shaftless roller comprises the following steps:
a static state: outputting corresponding current to the electromagnet according to the parameters obtained by the force sensor, and controlling the magnetic force of the electromagnet; at the moment, the magnetic force and the gravity of the rotor are in a force balance state;
a starting state: starting acceleration, adjusting the current of the electromagnet and controlling the magnetic force of the electromagnet; at the moment, the magnetic force and the gravity of the rotor form a tangential driving force of the rotor, and the rotor rotates;
steady state: when the rotating speed of the rotor reaches the expected rotating speed, controlling the flow of the electromagnet, and adjusting the magnetic force to enable the rotor to only bear radial force at the moment; at the moment, the rotor loses tangential driving force and keeps a static stable state;
a deceleration state: the current of the electromagnet is changed, so that the magnetic force of the electromagnet is changed, at the moment, the roller drum is subjected to a tangential force opposite to the rotation direction of the roller drum, and the rotor is gradually decelerated until the rotor stops rotating; at this time, the magnetic force and the gravity of the rotor keep a suspension balance state again.
When the permanent magnet of the rotor rotates to be closest to the permanent magnet of the stator, the rotating speed of the rotor is obtained according to the time interval of the force peak value collected by the sensor.
Magnets on the inner cylinder 201 and the outer cylinder 101 are used for controlling the circumferential state of the rotor, so that the rotor rotates and moves in a vertical plane;
the magnets on the outer cylinder baffle 104 and the inner cylinder baffle 202 are used for controlling the axial state of the rotor, so that the axial motion state of the rotor is realized.
The specific structure and working process of the embodiment are as follows:
as shown in fig. 1 to 6, the outer cylinder baffle 102 and the inner cylinder baffle 202 are both hollow structures, and in practical application, the baffles may seal the cylinder body in which they are located to form a fully-enclosed structure. A side baffle of the outer cylinder body 101 is a detachable baffle, and when the outer cylinder body is installed, the inner cylinder 2 is firstly placed in the outer cylinder 1, and then the outer cylinder baffle 102 is installed.
The non-contact type shaftless roller consists of an inner roller 2 and an outer roller 1, one of the rollers is fixed as a stator and the other is fixed as a rotor according to functional requirements, permanent magnets are arranged on the roller body and a baffle plate of the rotor through design calculation according to parameters such as the structure, the weight and the like of the roller, permanent magnets and electromagnets are arranged on the roller body and the baffle plate of the stator, and a force sensor is arranged at the permanent magnets.
In the present embodiment, the outer cylinder 1 is exemplified as a rotor, and the inner cylinder 2 is exemplified as a stator.
Because the magnitude of the magnetic force is related to the distance between the magnets, the relative relationship between the stator and the rotor can be judged according to the data collected by the force sensor, and the state of the rotor can be determined.
As shown in fig. 7, the state of the rotor is controlled by changing the magnitude of the magnetic force by controlling the current of the electromagnet. The magnet interaction force between the outer cylinder body 101 and the inner cylinder body 201 is mainly used for controlling the circumferential state of the rotor and realizing the rotation of the rotor and the up-and-down and left-and-right movement of the rotor, and the magnet interaction force between the outer cylinder baffle plate 102 and the inner cylinder baffle plate 202 is mainly used for controlling the axial state of the rotor and realizing the front-and-back movement of the rotor.
The electromagnet and the force sensor arranged on the stator are connected with an external vector control system, and when the stator does not work, current is output to the electromagnet according to data of the force sensor, the magnetic force of the electromagnet is controlled, and the magnetic force and the gravity of the rotor are kept in a suspension balance state.
When the rotor needs to rotate, the rotor is started to accelerate, the rotating speed of the rotor is set, the current of the electromagnet is changed through the control system, the magnetic force of the electromagnet is changed, and the tangential driving force can be applied to the outer cylinder body 101 according to the vector composition of the force, so that the stress state of the outer cylinder body 101 is changed, and the outer cylinder body 101 is driven to rotate; at the rotation in-process, according to the data of force sensor collection, the magnetic force size of real-time adjustment electro-magnet, when the rotor is rotatory, the permanent magnet of rotor also can follow the rotation, and the distance with permanent magnet on the stator can change, and when the distance is nearest, the power that receives is the biggest, according to the time interval of the power peak value that the sensor was gathered, can know the rotational speed of rotor.
When the rotating speed reaches the set rotating speed, the quality control system changes the magnetic force by controlling the current of the electromagnet, so that the rotor only bears radial force, and the rotor keeps a relatively stable state.
When the speed needs to be reduced, the vector control system can change the current of the electromagnet and change the magnetic force of the electromagnet, and according to the vector composition of the force, the roller can be subjected to tangential resistance opposite to the rotating direction, so that the rotation of the rotor is prevented. When the rotor stops rotating, the magnetic force and the gravity of the rotor keep a suspension balance state at the moment.
The target state of the outer cylinder body 101 and the transmitted data are collected through the force sensor, the magnetic force of the electromagnet is adjusted by using an external vector control system, so that the state of the outer cylinder body 101 is controlled, meanwhile, the state of the outer cylinder body 101 is judged according to the data of the force sensor, the magnetic force of the electromagnet is adjusted, real-time interactive control is achieved, and the stator and the rotor are kept in a non-contact state in the process.
The above description is intended to be illustrative and not restrictive, and the scope of the invention is defined by the appended claims, which may be modified in any manner within the scope of the invention.
Claims (9)
1. The utility model provides a non-contact shaftless cylinder, includes urceolus (1), inner tube (2), its characterized in that: the outer cylinder (1) comprises an outer cylinder barrel (101) and outer cylinder baffles (104) positioned at two ends of the outer cylinder barrel (101); an outer cylinder magnet (103) is arranged on the arc-shaped wall of the outer cylinder (101), and an outer baffle magnet (104) is arranged on the outer cylinder baffle (104);
the inner cylinder (2) comprises an inner cylinder body (201) and inner cylinder baffles (202) positioned at two ends of the inner cylinder body (201); an inner cylinder magnet (203) is arranged on the arc-shaped wall of the inner cylinder body (201), and an inner baffle magnet (204) is arranged on the inner cylinder baffle (202).
2. A non-contacting shaftless roller according to claim 2, wherein: the outer cylinder magnet (103) is arranged on the inner wall of the arc wall of the outer cylinder (1); the inner cylinder magnet (203) is arranged on the outer surface of the arc-shaped wall of the inner cylinder (2).
3. A non-contacting shaftless roller according to claim 1, further comprising: the outer cylinder baffle (104) is vertically turned over from the outer cylinder body (101) to the circle center; the inner cylinder baffle (202) is vertically folded from the inner cylinder body (201) to one side of the outer cylinder body (101); the outer baffle magnet (104) and the inner baffle magnet (204) are positioned on the same circumferential line.
4. A non-contacting shaftless roller according to claim 1, wherein: in the outer cylinder (1) and the inner cylinder (2),
a permanent magnet is adopted to correspond to the action of the rotor;
the permanent magnet and the electromagnet are arranged corresponding to the action of the stator, wherein the permanent magnet is arranged on the cylinder body, and the electromagnet is arranged on the baffle;
and a force sensor is also arranged on the cylinder body corresponding to the electronic action.
5. A non-contacting shaftless roller according to claim 1, further comprising: a side baffle of the outer barrel (1) is detachably arranged.
6. A method for mounting a non-contact shaftless roller is characterized by comprising the following steps:
the first step is as follows: magnets and force sensors are correspondingly arranged on the inner cylinder body (201) and the outer cylinder body (101);
the second step is that: and (3) sleeving and installing the prefabricated inner cylinder body (201) and the outer cylinder body (101) obtained in the first step, and then sealing an outer cylinder baffle (104) on one side of the outer cylinder body (101).
7. A control method of a non-contact type shaftless roller is characterized by comprising the following steps:
a static state: outputting corresponding current to the electromagnet according to the parameters obtained by the force sensor, and controlling the magnetic force of the electromagnet; at the moment, the magnetic force and the gravity of the rotor are in a force balance state;
and (3) starting: starting acceleration, adjusting the current of the electromagnet and controlling the magnetic force of the electromagnet; at the moment, the magnetic force and the gravity of the rotor form a tangential driving force of the rotor, and the rotor rotates;
steady state: when the rotating speed of the rotor reaches the expected rotating speed, controlling the flow of the electromagnet, and adjusting the magnetic force to enable the rotor to only bear radial force at the moment; at the moment, the rotor loses tangential driving force and keeps a static stable state;
a deceleration state: the current of the electromagnet is changed, so that the magnetic force of the electromagnet is changed, at the moment, the roller drum is subjected to tangential force opposite to the rotation direction of the roller drum, and the rotor gradually decelerates until the rotor stops rotating; at this time, the magnetic force and the gravity of the rotor keep a suspension balance state again.
8. The method of claim 7, wherein the step of controlling the non-contact type shaftless roller comprises the steps of:
when the permanent magnet of the rotor rotates to be closest to the permanent magnet of the stator, the rotating speed of the rotor is obtained according to the time interval of the force peak value collected by the sensor.
9. The method of claim 7, wherein the step of controlling the non-contact type shaftless roller comprises the steps of:
magnets on the inner cylinder body (201) and the outer cylinder body (101) are used for controlling the circumferential state of the rotor, so that the rotation of the rotor and the motion state of the rotor in a vertical plane are realized;
and magnets on the outer cylinder baffle (104) and the inner cylinder baffle (202) are used for controlling the axial state of the rotor, so that the axial motion state of the rotor is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210434920.9A CN114823043A (en) | 2022-04-24 | 2022-04-24 | Non-contact shaftless roller and installation and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210434920.9A CN114823043A (en) | 2022-04-24 | 2022-04-24 | Non-contact shaftless roller and installation and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114823043A true CN114823043A (en) | 2022-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210434920.9A Pending CN114823043A (en) | 2022-04-24 | 2022-04-24 | Non-contact shaftless roller and installation and control method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN114823043A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115536149A (en) * | 2022-10-28 | 2022-12-30 | 上海净豚环保科技有限公司 | Efficient and compact three-phase anaerobic treatment reactor |
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| US20040174079A1 (en) * | 2003-02-28 | 2004-09-09 | Izraelev Valentin M. | System for passive and stable suspension of a rotor in rotor/stator assemblies |
| KR20060105966A (en) * | 2005-04-04 | 2006-10-12 | 정화진 | How to prevent vibration of rotating devices |
| CN203071793U (en) * | 2013-01-18 | 2013-07-17 | 南京润维科技中心 | Non-contact coupling |
| CN103911815A (en) * | 2012-12-29 | 2014-07-09 | 海尔集团技术研发中心 | Washing machine and washing machine driving method |
| CN103946437A (en) * | 2012-04-24 | 2014-07-23 | Lg电子株式会社 | Laundry treating apparatus |
| CN104682658A (en) * | 2015-03-16 | 2015-06-03 | 常州先进制造技术研究所 | Bearingless linear motor |
| CN208939697U (en) * | 2018-11-07 | 2019-06-04 | 樊洁刚 | Full suspension permanent magnet generator |
-
2022
- 2022-04-24 CN CN202210434920.9A patent/CN114823043A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040174079A1 (en) * | 2003-02-28 | 2004-09-09 | Izraelev Valentin M. | System for passive and stable suspension of a rotor in rotor/stator assemblies |
| KR20060105966A (en) * | 2005-04-04 | 2006-10-12 | 정화진 | How to prevent vibration of rotating devices |
| CN103946437A (en) * | 2012-04-24 | 2014-07-23 | Lg电子株式会社 | Laundry treating apparatus |
| CN103911815A (en) * | 2012-12-29 | 2014-07-09 | 海尔集团技术研发中心 | Washing machine and washing machine driving method |
| CN203071793U (en) * | 2013-01-18 | 2013-07-17 | 南京润维科技中心 | Non-contact coupling |
| CN104682658A (en) * | 2015-03-16 | 2015-06-03 | 常州先进制造技术研究所 | Bearingless linear motor |
| CN208939697U (en) * | 2018-11-07 | 2019-06-04 | 樊洁刚 | Full suspension permanent magnet generator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115536149A (en) * | 2022-10-28 | 2022-12-30 | 上海净豚环保科技有限公司 | Efficient and compact three-phase anaerobic treatment reactor |
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