CN204205911U - A kind of permanent-magnet speed governor of fixing magnetic gap - Google Patents
A kind of permanent-magnet speed governor of fixing magnetic gap Download PDFInfo
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- CN204205911U CN204205911U CN201420755210.7U CN201420755210U CN204205911U CN 204205911 U CN204205911 U CN 204205911U CN 201420755210 U CN201420755210 U CN 201420755210U CN 204205911 U CN204205911 U CN 204205911U
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- permanent magnet
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Abstract
The utility model relates to a kind of permanent-magnet speed governor of fixing magnetic gap, comprise outer magnet rotor and Inner magnet rotor, described outer magnet rotor is evenly distributed with at least two outer permanent magnets along its inner peripheral surface circumference, the magnetic pole of described outer permanent magnet is disposed radially, and the magnetic that adjacent two outer permanent magnets expose magnetic pole strength is different; Described interior magnet rotor is distributed with at least one rotatable permanent magnet along its outer circumference surface circumference, and described rotatable permanent magnet is cylindrical and is diametrically N pole and S pole, and rotatable permanent magnet one end is provided with magnetic circuit adjuster.The utility model is owing to have employed fixing magnetic gap structure, substantially increase the area of contact of speed regulator and reduce assembly difficulty, reduce heat to produce, increase speed adjustable range, save rare earth material, substantially increased torque-transfer capability, achieve the speed-regulating function of input, output speed 0 ~ N%, not only reduce material consumption and save installing space, bringing conveniently to in-site installation construction especially.
Description
Technical field
The utility model relates to a kind of permanent-magnet speed governor, is specifically related to a kind of permanent-magnet speed governor of fixing magnetic gap.
Background technology
Permanent-magnet speed governor is the magnetic couple speed governing by permanent magnet, realize motor to be connected with soft (magnetic) of load, have no effect electrical network harmonic wave produce, reliability is high, and can work under high temperature, low temperature, humidity, dirt, inflammable and explosive, various adverse circumstances such as voltage instability and thunder and lightning, significantly alleviate mechanical oscillation, be widely used in electric power, iron and steel, metallurgy, petrochemical industry, the industries such as papermaking, municipal administration, naval vessel, irrigation and mining.And at present conventional permanent-magnet speed governor all realizes adjustment of rotational speed by adjustment air gap, the power consumption of magnetic circuit adjuster is large, and exist torque-transfer capability difference, assembly difficulty high, waste the shortcomings such as a large amount of rare earth resources.
Summary of the invention
For the problems referred to above, the utility model provides a kind of permanent-magnet speed governor reducing magnetic circuit adjuster power consumption, improve torque-transfer capability, reduce assembly difficulty, save the fixing magnetic gap of rare earth resources.
Current permanent-magnet speed governor be all air gap by changing between conductor rotor and p-m rotor thus control conductor rotor cutting magnetic line number, realize torque adjustment, because this mode exists a lot of drawback, the utility model is based on the attracting principle of magnet homopolar-repulsion, heteropole, start with from the active force changed between magnet rotor and interior magnet rotor and design new permanent-magnet speed governor, thus reach the object changing torque.The characteristic of reference permeability magnetic material and non-magnet material, utilizes the magnetic size that bi-material control permanent magnet externally represents, thus changes the active force between inside and outside magnet rotor, reach the object changing torque.
For solving the problem, the technical scheme that the utility model is taked is: a kind of permanent-magnet speed governor of fixing magnetic gap, comprise the outer magnet rotor be connected with driving shaft and the Inner magnet rotor be connected with driven shaft, described outer magnet rotor is evenly distributed with at least two outer permanent magnets along its inner peripheral surface circumference, the magnetic pole of described outer permanent magnet is disposed radially, and the magnetic that adjacent two outer permanent magnets expose magnetic pole strength is different; Described outer magnet rotor is evenly distributed with outer permanent magnet and described outer permanent magnet is N pole magnet or S pole magnet, between the two every setting along its inner peripheral surface circumference; Described interior magnet rotor is distributed with at least one rotatable permanent magnet along its outer circumference surface circumference, described rotatable permanent magnet is cylindrical and is diametrically N pole and S pole, rotatable permanent magnet both sides are enclosed with magnetic conductor, are separated between two magnetic conductors by non-magnetizer; Rotatable permanent magnet one end is provided with magnetic circuit adjuster, described magnetic circuit adjuster for rotating rotatable permanent magnet, regulate its pole orientation and then and then change the magnetic intensity of both sides magnetic conductors, change the active force between magnetic conductor and outer permanent magnet.In any case wherein arranging of non-magnetizer hinders the magnetic line of force form short circuit in magnetic conductor inside and cause rotating rotatable permanent magnet, magnetic conductor does not externally show magnetic.Come by the size variation of the Interaction Force of outer permanent magnet and rotatable permanent magnet and realize the change of transmitting strength, realizing speed-regulating function thus.Concrete adjustment process: rotate rotatable permanent magnet by magnetic circuit adjuster, when the N pole of rotatable permanent magnet is vertical with non-magnetizer contact-making surface with S pole joint face and magnetic conductor (90 degree of angles), the magnetic line of force is cut off by non-magnetizer, traverse in air, magnetic conductor is magnetized to the kicker magnet of corresponding polarity, the principle attracting according to homopolar-repulsion heteropole with outer permanent magnet produces attraction or repulsive force, and then in driving magnet rotor and outer magnet rotor be in the same way or rotate backward; On the contrary, when the N pole of rotatable permanent magnet parallel with non-magnetizer contact-making surface with magnetic conductor with S pole joint face (0 degree of angle), the magnetic line of force passes through smoothly through magnetic conductor, and magnetic conductor does not externally show magnetic, and outer permanent magnet does not produce active force to it; Different according to the anglec of rotation of rotatable permanent magnet, by the impact that magnetic circuit changes, the magnetic that magnetic conductor externally shows changes to the strongest (or changing to the most weak from the most by force) from the most weak, and namely outer permanent magnet changes to the strongest (or changing to the most weak from the most by force) from the most weak the active force that magnetic conductor produces.Generally driving shaft connects mair motor, and driven shaft connects load, but both can exchange, and namely driving shaft connects load, and driven shaft connects mair motor.
The number of magnets of outer permanent magnet identical or different and outer permanent magnet can increase and decrease according to magnet (exposing magnetic pole strength N pole, S pole) in pairs with the number of magnetic poles of rotatable permanent magnet.
When the number of magnets of outer permanent magnet is equal with rotatable permanent magnet magnetic number of poles, the speed-regulating function of input, output speed 0 ~ 100% can be realized; When the number of magnets of outer permanent magnet and rotatable permanent magnet magnetic number of poles unequal time, can realize inputting, the speed-regulating function of output speed 0 ~ N% (moment of torsion changes with N inverse proportion, maximum power constant).
This kind of mode, relative to the axial distance changing conductor rotor and p-m rotor, reduces the power consumption of magnetic circuit adjuster, reduces heat and produces, improve the transmission capacity of moment of torsion.
The installation direction of rotatable permanent magnet can have multiple, if ensure outer permanent magnet and the active force between it adjustable, described rotatable permanent magnet is vertical with driven shaft.Rotatable permanent magnet circumferentially distributes around driven shaft.
For improving magnetic that interior magnet rotor externally shows and increasing magnetic adjustable range, each rotatable permanent magnet is axially being provided with a fixed permanent magnet all side by side along driven shaft, fixed permanent magnet is cylindrical and is diametrically N pole and S pole, magnetic conductor around rotatable permanent magnet and non-magnetizer extend to around fixed permanent magnet, the N pole of fixed permanent magnet and S pole to lay respectively in two separated magnetic conductors and two magnetic pole joint faces perpendicular to the contact-making surface of magnetic conductor and non-magnetizer.Concrete adjustment process: rotate rotatable permanent magnet by magnetic circuit adjuster, when fixed permanent magnet is corresponding with the magnetic pole of the same name of rotatable permanent magnet, two ends magnetic conductor is magnetized to the kicker magnet of corresponding polarity, and magnetic is the strongest, be two whole magnetic of magnet and, magnetic conductor and the outer permanent magnet principle attracting according to homopolar-repulsion heteropole produce attraction or repulsive force, and then in driving magnet rotor and outer magnet rotor be in the same way or rotate backward; When the same magnetic pole of fixed permanent magnet and rotatable permanent magnet is reverse, the magnetic line of force passes through smoothly through corresponding magnetic conductor, and magnetic conductor does not externally show magnetic, and outer permanent magnet does not produce active force to magnetic conductor; When the magnetic pole of rotatable permanent magnet rotates to time parallel with non-magnetizer contact-making surface with magnetic conductor, the magnetic line of force of rotatable permanent magnet passes through through magnetic conductor, does not externally show magnetic, only has the magnetic of fixed permanent magnet; Different according to the anglec of rotation of rotatable permanent magnet, the magnetic that magnetic conductor externally shows changes to from the most by force the most weak (or from the most weak change to the strongest), and namely outer permanent magnet changes to the strongest (or changing to the most weak from the most by force) from the most weak the active force that magnetic conductor produces.
The another kind of preferably mounting means of rotatable permanent magnet is: described rotatable permanent magnet is parallel with driven shaft.Rotatably all circumferentially distribute around driven shaft.
Equally, for for the magnet rotor magnetic of externally showing in improving and increase magnetic adjustable range, each rotatable permanent magnet is being provided with a fixed permanent magnet all side by side along driven shaft radial direction, fixed permanent magnet is cylindrical and is diametrically N pole and S pole, magnetic conductor around rotatable permanent magnet and non-magnetizer extend to around fixed permanent magnet, the N pole of fixed permanent magnet and S pole to lay respectively in two separated magnetic conductors and two magnetic pole joint faces perpendicular to the contact-making surface of magnetic conductor and non-magnetizer.Concrete adjustment process is the same.
Described magnetic circuit adjuster comprises adjusting actuator for reception control signal and the mechanical transmission mechanism being connected adjusting actuator and rotatable permanent magnet.In use procedure, permanent-magnet speed governor is installed in certain control system, pressure, flow, liquid level or other control signals are controlled system acceptance and process, then adjusting actuator is provided to, rotatable permanent magnet is rotated by mechanical transmission mechanism by adjusting actuator, change magnetic field intensity regulating load rotating speed, meet control overflow.The control action that mechanical transmission mechanism is used for being sent by adjusting actuator passes to rotatable permanent magnet, control permanent magnet rotating, its implementation can have multiple, can be servomotor, lever transmission mechanism, gear drive, rack and pinion drive mechanism, seal wire transmission mechanism etc., choose the most feasible several transmission mechanism below and be described.
Described mechanical transmission mechanism is lever transmission mechanism, comprise and being sleeved on driven shaft and the dwang arranged with the drive sleeve that driven shaft key connects and corresponding each rotatable permanent magnet, drive sleeve one end is provided with stopper slot, dwang one end and rotatable permanent magnet end affixed, the other end is stuck in connection for transmission cover in stopper slot by limit shaft, and the drive sleeve other end connects adjusting actuator by the bearing be enclosed within driven shaft.
Described mechanical transmission mechanism is gear drive, comprise the barrel gear be enclosed within outside driven shaft and the transmitting gear be connected with a joggle with barrel gear periphery, transmitting gear and rotatable permanent magnet one_to_one corresponding, the axle of transmitting gear is connected with rotatable permanent magnet end, and barrel gear connects adjusting actuator.
Described mechanical transmission mechanism is rack and pinion drive mechanism, and comprise the tooth bar bucket, tooth bar in tooth bar bucket and the transmitting gear that engages with tooth bar that are connected with adjusting actuator, the axle of transmitting gear is connected with rotatable permanent magnet end.
The utility model, owing to have employed fixing magnetic gap structure, substantially increases the area of contact of speed regulator and reduces assembly difficulty, reduces heat and produces, increase speed adjustable range, saved rare earth material, substantially increased torque-transfer capability.Owing to have employed magnetic force transfer principle, so achieve the speed-regulating function of input, output speed 0 ~ N%, greatly extend the scope of application of the present utility model and field; Owing to have employed magnetic circuit adjustment structure, substantially reduce the power consumption the volume reducing adjustment actuating mechanism to greatest extent that perform governor motion, not only reduce material consumption and save installing space, bring conveniently to in-site installation construction especially.
Accompanying drawing explanation
Fig. 1 is the outer magnet rotor cutaway view of the utility model
Fig. 2 is the front sectional view of embodiment 1;
Fig. 3 is embodiment 1 magnetic pole strength schematic diagram;
Fig. 4 is the front sectional view of embodiment 2;
Fig. 5 is embodiment 2 magnetic pole strength schematic diagram;
Fig. 6 is the front sectional view of embodiment 3;
Fig. 7 is embodiment 3 magnetic pole strength schematic diagram;
Fig. 8 is the front sectional view of embodiment 4;
Fig. 9 is embodiment 4 magnetic pole strength schematic diagram;
Figure 10 is rack pinion structural representation;
Figure 11 is gear transmission structure schematic diagram;
Figure 12 is the main cutaway view of embodiment 7;
Figure 13 is the A-A cutaway view of embodiment 7;
Wherein, 1, outer magnet rotor, 2, magnetic conductor, 3, fixed permanent magnet, 4, rotatable permanent magnet, 5, dwang, 6, drive sleeve, 7, driven shaft, 8, adjusting actuator, 9, bearing, 10, non-magnetizer, 11, stopper slot, 12, limit shaft, 13, tooth bar bucket, 14, transmitting gear, 15 tooth bars, 16, barrel gear, 17, outer permanent magnet, 18, driving shaft.
Embodiment
embodiment one
A kind of permanent-magnet speed governor of fixing magnetic gap, as shown in Figure 1, 2, 3, comprise the outer magnet rotor 1 be connected with driving shaft 18 and the Inner magnet rotor be connected with driven shaft 7, described outer magnet rotor 1 is evenly distributed with at least two outer permanent magnets 17 along its inner peripheral surface circumference, the magnetic pole of described outer permanent magnet 17 is disposed radially, and the magnetic that adjacent two outer permanent magnets 17 expose magnetic pole strength is different; Described interior magnet rotor is distributed with at least one rotatable permanent magnet 4 along its outer circumference surface circumference, and described rotatable permanent magnet 4 is vertical with driven shaft 7.Described rotatable permanent magnet 4 is cylindrical and is diametrically N pole and S pole, and rotatable permanent magnet 4 both sides are enclosed with magnetic conductor 2, are separated between two magnetic conductors 2 by non-magnetizer 10; In the present embodiment, the number of magnets of outer permanent magnet 17 is equal with rotatable permanent magnet 4 number of magnetic poles.Rotatable permanent magnet 4 one end is provided with magnetic circuit adjuster, described magnetic circuit adjuster for rotating rotatable permanent magnet 4, regulate its pole orientation and then and then change the magnetic intensity of both sides magnetic conductor 2, change the active force between magnetic conductor 2 and outer permanent magnet 17.Described magnetic circuit adjuster comprise for reception control signal adjusting actuator 8 and be connected the mechanical transmission mechanism of adjusting actuator 8 and rotatable permanent magnet 5.Described mechanical transmission mechanism is lever transmission mechanism, comprise and being sleeved on driven shaft 7 and the dwang 5 arranged with drive sleeve 6 and corresponding each rotatable permanent magnet 4 of driven shaft 7 key connecting, drive sleeve 6 one end is provided with stopper slot 11, dwang 5 one end and rotatable permanent magnet 4 end affixed, the other end is stuck in connection for transmission cover 6 in stopper slot 11 by limit shaft 12, and drive sleeve 6 other end connects adjusting actuator 8 by the bearing 9 be enclosed within driven shaft 7.
Embodiment two
A permanent-magnet speed governor for fixing magnetic gap, as shown in Fig. 1,4,5, described rotatable permanent magnet 4 is parallel with driven shaft 7, and other structures are with embodiment one.
Embodiment three
A kind of permanent-magnet speed governor of fixing magnetic gap, as shown in Fig. 1,6,7, comprise the outer magnet rotor 1 be connected with driving shaft 18 and the Inner magnet rotor be connected with driven shaft 7, described outer magnet rotor 1 is evenly distributed with at least two outer permanent magnets 17 along its inner peripheral surface circumference, the magnetic pole of described outer permanent magnet 17 is disposed radially, and the magnetic that adjacent two outer permanent magnets 17 expose magnetic pole strength is different; Described interior magnet rotor is distributed with at least one rotatable permanent magnet 4 along its outer circumference surface circumference, and described rotatable permanent magnet 4 is vertical with driven shaft 7.Described rotatable permanent magnet 4 is cylindrical and is diametrically N pole and S pole, and rotatable permanent magnet 4 both sides are enclosed with magnetic conductor 2, are separated between two magnetic conductors 2 by non-magnetizer 10; Each rotatable permanent magnet 4 is axially being provided with a fixed permanent magnet 3 all side by side along driven shaft 7, fixed permanent magnet 3 is cylindrical and is diametrically N pole and S pole, magnetic conductor 2 around rotatable permanent magnet 4 and non-magnetizer 10 extend to around fixed permanent magnet 4, the N pole of fixed permanent magnet 4 and S pole to lay respectively in two separated magnetic conductors 2 and two magnetic pole joint faces perpendicular to the contact-making surface of magnetic conductor 2 and non-magnetizer 10.In the present embodiment, number of magnets and the rotatable permanent magnet 4 of outer permanent magnet 17, fixed permanent magnet 3 number of magnetic poles are all equal.Rotatable permanent magnet 4 one end is provided with magnetic circuit adjuster, described magnetic circuit adjuster for rotating rotatable permanent magnet 4, regulate its pole orientation and then and then change the magnetic intensity of both sides magnetic conductor 2, change the active force between magnetic conductor 2 and outer permanent magnet 1.Described magnetic circuit adjuster comprise for reception control signal adjusting actuator 8 and be connected the mechanical transmission mechanism of adjusting actuator 8 and rotatable permanent magnet 4.Described mechanical transmission mechanism is lever transmission mechanism, comprise and being sleeved on driven shaft 7 and the dwang 5 arranged with drive sleeve 6 and corresponding each rotatable permanent magnet 4 of driven shaft 7 key connecting, drive sleeve 6 one end is provided with stopper slot 11, dwang 5 one end and rotatable permanent magnet 4 end affixed, the other end is stuck in connection for transmission cover 6 in stopper slot 11 by limit shaft 12, and drive sleeve 6 other end connects adjusting actuator 8 by the bearing 9 be enclosed within driven shaft 7.
embodiment four
A permanent-magnet speed governor for fixing magnetic gap, as shown in Fig. 1,8,9, described rotatable permanent magnet 4 is parallel with driven shaft 7, and each rotatable permanent magnet 4 is being provided with a fixed permanent magnet 3 all side by side along driven shaft 7 radial direction, and other structures are with embodiment three.
embodiment five
A kind of permanent-magnet speed governor of fixing magnetic gap, as shown in Figure 10, described mechanical transmission mechanism is rack and pinion drive mechanism, comprise the tooth bar bucket 13, tooth bar 15 in tooth bar bucket 13 and the transmitting gear 14 that engages with tooth bar 15 that are connected with adjusting actuator 8, the axle of transmitting gear 14 is connected with rotatable permanent magnet 4 end.Other structures are with embodiment three.
embodiment six
A kind of permanent-magnet speed governor of fixing magnetic gap, as shown in figure 11, described mechanical transmission mechanism is gear drive, comprise the barrel gear 16 be enclosed within outside driven shaft 7 and the transmitting gear 14 be connected with a joggle with barrel gear 16 periphery, transmitting gear 14 and rotatable permanent magnet 4 one_to_one corresponding, the axle of transmitting gear 14 is connected with rotatable permanent magnet 4 end, and barrel gear 16 connects adjusting actuator.Other structures are with embodiment four.
embodiment seven
a permanent-magnet speed governor for fixing magnetic gap, as shown in Fig. 1,12,13, in the present embodiment, the number of magnets of outer permanent magnet and rotatable permanent magnet, fixed permanent magnet number of magnetic poles are unequal.Other structures are with embodiment three.
The utility model both can adopt the structure of paired fixed permanent magnet and rotatable permanent magnet, also can adopt the structure only having rotatable permanent magnet, was not limited to above citing.The invention of every employing same thought is all within protection range of the present utility model.
Claims (9)
1. the permanent-magnet speed governor of a fixing magnetic gap, it is characterized in that: comprise the outer magnet rotor (1) be connected with driving shaft (18) and the interior magnet rotor be connected with driven shaft (7), described outer magnet rotor (1) is evenly distributed with at least two outer permanent magnets (17) along its inner peripheral surface circumference, the magnetic pole of described outer permanent magnet (17) is disposed radially, and the magnetic that adjacent two outer permanent magnets (17) expose magnetic pole strength is different; Described interior magnet rotor is distributed with at least one rotatable permanent magnet (4) along its outer circumference surface circumference, described rotatable permanent magnet (4) is for cylindrical and be diametrically N pole and S pole, rotatable permanent magnet (4) both sides are enclosed with magnetic conductor (2), are separated between two magnetic conductors (2) by non-magnetizer (10); Rotatable permanent magnet (4) one end is provided with magnetic circuit adjuster, described magnetic circuit adjuster is for rotating rotatable permanent magnet (4), regulate its pole orientation and then and then change both sides magnetic conductor (2) magnetic intensity, change magnetic conductor (2) and outer permanent magnet (17) between active force.
2. the permanent-magnet speed governor of fixing magnetic gap according to claim 1, is characterized in that: described rotatable permanent magnet (4) is vertical with driven shaft (7).
3. the permanent-magnet speed governor of fixing magnetic gap according to claim 2, it is characterized in that: each rotatable permanent magnet (4) is axially being provided with a fixed permanent magnet (3) all side by side along driven shaft (7), fixed permanent magnet (3) is for cylindrical and be diametrically N pole and S pole, magnetic conductor (2) around rotatable permanent magnet (4) and non-magnetizer (10) extend to fixed permanent magnet (3) around, the N pole of fixed permanent magnet (3) and S pole to lay respectively in two separated magnetic conductors (2) and two magnetic pole joint faces perpendicular to the contact-making surface of magnetic conductor (2) and non-magnetizer (10).
4. the permanent-magnet speed governor of fixing magnetic gap according to claim 1, is characterized in that: described rotatable permanent magnet (4) is parallel with driven shaft (7).
5. the permanent-magnet speed governor of fixing magnetic gap according to claim 4, it is characterized in that: each rotatable permanent magnet (4) is being provided with a fixed permanent magnet (3) all side by side along driven shaft (7) radial direction, fixed permanent magnet (3) is for cylindrical and be diametrically N pole and S pole, magnetic conductor (2) around rotatable permanent magnet (4) and non-magnetizer (10) extend to fixed permanent magnet (3) around, the N pole of fixed permanent magnet (3) and S pole to lay respectively in two separated magnetic conductors (2) and two magnetic pole joint faces perpendicular to the contact-making surface of magnetic conductor (2) and non-magnetizer (10).
6. the permanent-magnet speed governor of the fixing magnetic gap according to any one of claim 1-5, is characterized in that: described magnetic circuit adjuster comprise for reception control signal adjusting actuator (8) and be connected the mechanical transmission mechanism of adjusting actuator (8) and rotatable permanent magnet (4).
7. the permanent-magnet speed governor of fixing magnetic gap according to claim 6, it is characterized in that: described mechanical transmission mechanism is lever transmission mechanism, comprise and be sleeved on the upper and dwang (5) arranged with drive sleeve (6) and corresponding each rotatable permanent magnet (4) of driven shaft (7) key connecting of driven shaft (7), drive sleeve (6) one end is provided with stopper slot (11), dwang (5) one end and rotatable permanent magnet (4) end affixed, the other end is stuck in the interior connection for transmission cover (6) of stopper slot (11) by limit shaft (12), drive sleeve (6) other end connects adjusting actuator by the bearing (9) be enclosed within driven shaft (7).
8. the permanent-magnet speed governor of fixing magnetic gap according to claim 6, it is characterized in that: described mechanical transmission mechanism is gear drive, comprise the transmitting gear (14) being enclosed within driven shaft (7) barrel gear outward (16) and being connected with a joggle with barrel gear (16) periphery, transmitting gear (14) and rotatable permanent magnet (4) one_to_one corresponding, the axle of transmitting gear (14) is connected with rotatable permanent magnet (4) end, and barrel gear (16) connects adjusting actuator (8).
9. the permanent-magnet speed governor of fixing magnetic gap according to claim 6, it is characterized in that: described mechanical transmission mechanism is rack and pinion drive mechanism, comprise the tooth bar bucket (13), tooth bar (15) in tooth bar bucket (13) and the transmitting gear (14) that engages with tooth bar (15) that are connected with adjusting actuator (8), the axle of transmitting gear (14) is connected with rotatable permanent magnet (4) end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420755210.7U CN204205911U (en) | 2014-12-05 | 2014-12-05 | A kind of permanent-magnet speed governor of fixing magnetic gap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420755210.7U CN204205911U (en) | 2014-12-05 | 2014-12-05 | A kind of permanent-magnet speed governor of fixing magnetic gap |
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| Publication Number | Publication Date |
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| CN204205911U true CN204205911U (en) | 2015-03-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201420755210.7U Withdrawn - After Issue CN204205911U (en) | 2014-12-05 | 2014-12-05 | A kind of permanent-magnet speed governor of fixing magnetic gap |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362829A (en) * | 2014-12-05 | 2015-02-18 | 刁俊起 | Permanent magnet speed controller with fixed magnetic gap |
| CN108418392A (en) * | 2018-04-08 | 2018-08-17 | 浙江长城搅拌设备股份有限公司 | A kind of permanent-magnet sealing transmission device |
-
2014
- 2014-12-05 CN CN201420755210.7U patent/CN204205911U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362829A (en) * | 2014-12-05 | 2015-02-18 | 刁俊起 | Permanent magnet speed controller with fixed magnetic gap |
| WO2016086514A1 (en) * | 2014-12-05 | 2016-06-09 | 刁俊起 | Permanent magnet speed governor having fixed magnetic gap |
| US10439543B2 (en) | 2014-12-05 | 2019-10-08 | Junqi DIAO | Permanent magnet speed governor having fixed magnetic gap |
| CN108418392A (en) * | 2018-04-08 | 2018-08-17 | 浙江长城搅拌设备股份有限公司 | A kind of permanent-magnet sealing transmission device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150311 Effective date of abandoning: 20160831 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |