CN209896866U - Asynchronous variable pitch motor - Google Patents
Asynchronous variable pitch motor Download PDFInfo
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- CN209896866U CN209896866U CN201920971429.3U CN201920971429U CN209896866U CN 209896866 U CN209896866 U CN 209896866U CN 201920971429 U CN201920971429 U CN 201920971429U CN 209896866 U CN209896866 U CN 209896866U
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Abstract
The utility model relates to an asynchronous variable pitch motor, wherein a brake is arranged at one end of a motor shaft; one end of the brake is provided with a transition plate, and the transition sleeve is positioned at the other end of the transition plate; a split type rotary transformer stator and a split type rotary transformer rotor are arranged in the transition sleeve, and a fan is arranged at the tail end of the transition sleeve; the rotary transformer stator is arranged on the periphery of the rotary transformer rotor; one end of the rotary transformer rotor is matched with the motor shaft, the other end of the rotary transformer rotor is matched with a pressure plate spigot of the rotary transformer rotor, and the rotary transformer rotor is locked in a screw hole at the shaft end of the motor through a rotor bolt; the transition plate is provided with a mounting groove, one end of the rotary transformer stator is matched with a spigot of the rotary transformer stator pressing plate, the other end of the rotary transformer stator is arranged in the mounting groove, and the rotary transformer stator pressing plate are fixed on the transition plate through stator bolts; an assembly gap is reserved between the rotary stator pressing plate and the rotary transformer rotor pressing plate; the utility model discloses become stator and rotatory rotor through become rotor clamp plate soon, become stator clamp plate soon and change the regulation frock soon and go on the assembly location, guarantee to become stator and the axial and the radial cooperation precision of rotor soon.
Description
Technical Field
The utility model belongs to the technical field of the motor, especially, relate to an asynchronous variable pitch motor.
Background
With the development of the national wind power technology, the equivalence of wind and fire becomes a problem facing the urgent need of the wind power generation technology, which requires that each wind power supplier reduce the cost as much as possible and simultaneously must ensure the reliability. For an asynchronous variable pitch motor, the price of an original encoder is relatively high, and compared with the encoder, the rotary variable pitch motor (in a split structure), the price advantage is obvious, but some defects exist. The method overcomes the defect of the rotary change, and the reliable application of the rotary change in the asynchronous variable pitch motor becomes the key of success breaking; the variable pitch system is in a severe environment of vibration, impact and collision for a long time, and how to slow down instantaneous stress and improve the reliability of the motor is also a problem that wind power needs to be considered.
The structure of the current domestic and overseas mainstream asynchronous pitch-controlled motor is shown in the attached figure 4, the encoder 60 is adopted for controlling the rotating speed, the fan 12 is adopted for cooling, and the structural form is about as follows: the integrated encoder is directly or indirectly arranged on a transition plate 8 of the brake 7; the encoder shaft 60 is connected with the motor shaft through a coupling for transmission, and the fan 12 is installed on the transition plate 8 of the brake 7 through a plurality of support rods 61 and a mounting plate 62.
However, after long-term use, it has been found that there are problems with this structure:
1) the tolerance of the matching size of the brake is very large, and after multi-stage matching is added, multi-stage errors from the end cover, the brake flange, the brake and the transition plate are accumulated, and the accumulated errors are larger, so that the detection precision of the rotary transformer is influenced;
2) the integrated rotary transformer has no advantage in price, while the split rotary transformer has poor protection grade, mainly poor dust resistance and salt mist resistance, and cannot be directly used;
3) brake dust generated in the braking process damages the formation of the rotary transformer insulating part;
4) the structural strength of the fan supported by the support rods is weak, and when the weight of the fan is large, the fan is poor in vibration resistance and impact resistance.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming prior art not enough and providing one kind and can adopt split type to become the structure soon, the cooperation precision of the rotatory rotor that becomes in the structure soon and the rotatory stator that becomes is high, and the leakproofness that becomes soon simultaneously is high with life, the asynchronous variable pitch motor that the anti-vibration ability of fan is strong.
In order to achieve the above purpose, the utility model adopts the technical scheme that: an asynchronous variable pitch motor comprises a base, a front end cover and a rear end cover which are respectively arranged at two ends of the base, and a stator assembly and a rotor assembly which are arranged in a hollow cavity of the base, wherein the rotor assembly is sleeved on a motor shaft, and one end of the motor shaft is connected with a brake; the stator component is sleeved on the periphery of the rotor component; the device also comprises a transition plate, a transition sleeve, a rotary transformer pressing plate, a rotary transformer stator pressing plate, a rotor bolt, a stator bolt and a fan; one end of the brake is tightly attached with a transition plate, and the other end of the transition plate is fixedly provided with a transition sleeve; a rotary transformer stator and a rotary transformer rotor which are in a split structure are arranged in the transition sleeve, and a fan is arranged at the tail end of the transition sleeve; the rotary transformer stator is arranged on the periphery of the rotary transformer rotor, and a rotating shaft of the rotary transformer rotor is hollow; one end of the rotary transformer rotor is matched with the motor shaft, the other end of the rotary transformer rotor is matched with a spigot of a rotary transformer rotor pressing plate, and the rotary transformer rotor is locked in a screw hole at the shaft end of the motor through a rotor bolt; the transition plate is provided with an installation groove for adapting to the rotary transformer stator, one end of the rotary transformer stator is matched with a spigot of the rotary transformer stator pressing plate, the other end of the rotary transformer stator is arranged in the installation groove, and the rotary transformer stator pressing plate are fixed on the transition plate through stator bolts; and an assembly gap is reserved between the rotary stator pressing plate and the rotary transformer rotor pressing plate.
Furthermore, an O-shaped sealing ring is arranged between the rotary transformer stator and the rotary transformer stator pressing plate.
Furthermore, the fan is arranged at the tail end of the transition sleeve through an elastic mounting plate.
Furthermore, the fan cover is positioned at the tail end of the rear end cover and used for covering the fan and the transition sleeve.
Furthermore, double sealing is carried out between the transition sleeve and the motor shaft through labyrinth sealing and dynamic sealing.
Furthermore, clearance fit is adopted between the mounting grooves of the rotary transformer stator and the transition plate.
Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:
the utility model discloses an asynchronous variable pitch motor, its inside change stator soon and change the rotor soon through change stator clamp plate, change rotor clamp plate soon and change the regulation frock soon and assemble, the axial and the radial cooperation precision of changing stator soon and changing the rotor soon have been guaranteed, the transition cooperation number of times has been reduced, the cooperation precision has been improved, and will change the setting soon in the transition cover, stop the influence of dust to changing soon, the protection and the life-span of changing soon have been improved, elastic mounting panel installation fan has been adopted simultaneously, the ability that the fan blade shocks resistance has been improved, better demand that has satisfied the market.
Drawings
The technical scheme of the utility model is further explained by combining the attached drawings as follows:
FIG. 1 is a front view of the present invention;
FIG. 2 is an enlarged fragmentary view of FIG. 1;
FIG. 3 is a schematic structural view of a rotary transformer adjusting tool;
FIG. 4 is a schematic structural diagram of an asynchronous pitch motor in the prior art;
wherein: the device comprises a base 1, a front end cover 2, a rear end cover 3, a stator assembly 4, a rotor assembly 5, a motor shaft 6, a brake 7, a transition plate 8, a transition sleeve 9, a rotor bolt 10, a rotary stator pressing plate 11, a fan 12, a stator bolt 13, a rotary rotor pressing plate 14, a rotary rotor 20, a rotary stator 21, an elastic mounting plate 30, a fan cover 31, a special tool O-shaped sealing ring 50, a labyrinth seal 51, a dynamic seal 52, a rotary rotor pressing plate spigot 53, an assembly gap 54, an encoder 60, a support rod 61, a mounting plate 62 and a rotary variable adjusting tool 80.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1-3, the asynchronous pitch-controlled motor of the present invention comprises a base 1, a front end cap 2 and a rear end cap 3 respectively disposed at two ends of the base 1, and a stator assembly 4 and a rotor assembly 5 disposed in a hollow cavity of the base 1, wherein the rotor assembly 5 is sleeved on a motor shaft 6, and one end of the motor shaft 6 is connected to a brake 7; the stator assembly 4 is sleeved on the periphery of the rotor assembly 5; the device also comprises a transition plate 8, a transition sleeve 9, a rotary transformer rotor pressing plate 14, a rotary transformer stator pressing plate 11, a rotor bolt 10, a stator bolt 13 and a fan 12; one end of the brake 7 is tightly attached with a transition plate 8, and the other end of the transition plate 8 is fixedly provided with a transition sleeve 9; a rotary transformer stator 21 and a rotary transformer rotor 20 which are in a split structure are arranged in the transition sleeve 9, a fan 12 is arranged at the tail end of the transition sleeve 9, the rotary transformer stator 21 is arranged on the periphery of the rotary transformer rotor 20, and a rotating shaft of the rotary transformer rotor 20 is hollow; one end of the rotary transformer 20 is matched with the motor shaft 6, and the other end is matched with a rotary transformer pressing plate spigot 53 and locked in a screw hole at the end of the motor shaft 6 through a rotor bolt 10.
The transition plate 8 is provided with an installation groove for adapting the rotary transformer stator 21, one end of the rotary transformer stator 21 is matched with a spigot of the rotary transformer stator pressing plate 11, the other end of the rotary transformer stator is arranged in the installation groove of the transition plate 8, the radial direction of the rotary transformer stator and the installation groove of the transition plate adopts clearance fit, the assembly clearance 54, namely the outer diameter of the rotary transformer stator pressing plate, is used for positioning during installation, the radial position of the rotary transformer stator pressing plate 11 is determined, the concentricity of the rotary transformer stator 21 and the rotary transformer rotor 20 is ensured, and then the rotary transformer stator 21 and the rotary transformer stator pressing plate 11 are fixed on the transition plate 8 through the stator bolt 13.
As a further preferred embodiment, an O-ring is disposed between the rotating stator 21 and the rotating stator pressing plate 11, and the O-ring 50 is disposed on the rotating adjustment tool shown in fig. 3, so as to make the fitting between the rotating stator 21 and the rotating stator pressing plate 11 more accurate during the installation.
An O-shaped ring between the transition plate 8 and the transition sleeve 9 and an O-shaped sealing ring between the transition plate 8 and the brake 7 are used for improving the protection capability of the rotary transformer to the environment and improving the sealing performance.
As a further preferred embodiment, the fan 12 is disposed at the end of the transition sleeve 9 through an elastic mounting plate 30, so as to ensure the capability of the fan blades in the fan 12 to resist impact and vibration.
As a further preferred embodiment, the fan cover 31 is located at the end of the rear end cover 3 and is used for covering the fan 12 and the transition sleeve 9, and the fan cover 31 plays a role in preventing dust and water for the fan 12.
As a further preferred embodiment, the transition sleeve 9 and the motor shaft 6 are sealed through a labyrinth seal 51 and a dynamic seal 52, so that the influence of brake dust on the rotation life is avoided.
In the asynchronous variable pitch motor, the matching precision between the rotary variable rotor pressing plate 14 and the rotary variable rotor 20 and between the rotary variable stator pressing plate 11 and the rotary variable stator 21 is high, and the rotary variable stator 21 and the rotary variable stator pressing plate 11 can be regarded as a whole by matching with the automatic aligning function of an O-shaped ring (not shown in the figure) on the rotary variable stator pressing plate 11; at this time, the positioning accuracy of the rotary transformer 20 can be approximately equivalent to the positioning accuracy of the outer diameter of the rotary transformer pressing plate 14, that is, the positioning accuracy of the fitting gap 54; the positioning accuracy of the rotary transformer stator 21 is approximately equivalent to the positioning accuracy of the inner diameter of the rotary transformer stator pressing plate 11, the mounting accuracy of the rotary transformer rotor 20 is mainly determined by the matching of the rotary transformer rotor 20 and the motor shaft 6, the radial clearance fit is adopted between the outer diameter of the rotary transformer stator 21 and the mounting groove of the transition plate 8, fine adjustment can be realized, the radial positioning accuracy is mainly ensured by the outer diameter of the rotary transformer pressing plate and the accuracy of the rotary transformer adjusting tool 80, specifically, the inner diameter of the rotary transformer adjusting tool 80 is sleeved on the outer diameter of the rotary transformer pressing plate, namely, the mounting clearance 54, and the positioning of the inner diameter of the rotary transformer stator is directly determined by the outer diameter of the rotary transformer adjusting tool 80, so that the transition fit frequency is reduced, the matching accuracy is improved, and the detection accuracy of the rotary transformer is improved.
The utility model discloses an asynchronous variable pitch motor, become stator and rotatory change rotor through becoming stator clamp plate soon, the rotatory change of rotatory change rotor clamp plate and adaptation is adjusted the frock and is assembled, the axial and the radial cooperation precision of becoming stator and the rotatory change rotor have been guaranteed soon, the transition cooperation number of times has been reduced, the cooperation precision has been improved, and will change the setting soon in the transition cover, stop the influence of dust to the change soon, the protection and the life-span of having improved the change soon, elastic mounting board installation fan has been adopted simultaneously, the ability that the fan blade shocks resistance has been improved, better demand that has satisfied the market.
The above is only a specific application example of the present invention, and does not constitute any limitation to the protection scope of the present invention. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.
Claims (6)
1. An asynchronous variable pitch motor comprises a base (1), a front end cover (2) and a rear end cover (3) which are respectively arranged at two ends of the base (1), and a stator assembly (4) and a rotor assembly (5) which are arranged in a hollow cavity of the base (1), wherein the rotor assembly (5) is sleeved on a motor shaft (6), and one end of the motor shaft (6) is connected with a brake (7); the stator component (4) is sleeved on the periphery of the rotor component (5); the method is characterized in that: the device also comprises a transition plate (8), a transition sleeve (9), a rotary transformer rotor pressing plate (14), a rotary transformer stator pressing plate (11), a rotor bolt (10), a stator bolt (13) and a fan (12); one end of the brake (7) is tightly attached with a transition plate (8), and the other end of the transition plate (8) is fixedly provided with a transition sleeve (9); a rotary transformer stator (21) and a rotary transformer rotor (20) which are in a split structure are arranged in the transition sleeve (9), and a fan (12) is arranged at the tail end of the transition sleeve (9); the rotary transformer stator (21) is arranged on the periphery of the rotary transformer rotor (20), and a rotating shaft of the rotary transformer rotor (20) is hollow; one end of the rotary transformer rotor (20) is matched with the motor shaft (6), the other end of the rotary transformer rotor is matched with a spigot (53) of the rotary transformer rotor pressing plate (14), and the rotary transformer rotor (20) is locked in a screw hole at the end of the motor shaft (6) through a rotor bolt (10); the transition plate (8) is provided with an installation groove for adapting the rotary transformer stator (21), one end of the rotary transformer stator (21) is matched with a spigot of the rotary transformer stator pressing plate (11), the other end of the rotary transformer stator is arranged in the installation groove, and the rotary transformer stator (21) and the rotary transformer stator pressing plate (11) are fixed on the transition plate (8) through a stator bolt (13); and an assembly gap (54) is reserved between the rotary stator pressing plate (11) and the rotary transformer rotor pressing plate (14).
2. The asynchronous pitch motor of claim 1, wherein: an O-shaped sealing ring is arranged between the rotary transformer stator (21) and the rotary transformer stator pressing plate (11).
3. The asynchronous pitch motor of claim 1, wherein: the fan (12) is arranged at the tail end of the transition sleeve (9) through an elastic mounting plate (30).
4. The asynchronous pitch motor of claim 1, wherein: the fan cover is characterized by further comprising a fan cover (31) which is located at the tail end of the rear end cover (3) and used for covering the fan (12) and the transition sleeve (9).
5. The asynchronous pitch motor of claim 1, wherein: and double sealing is performed between the transition sleeve (9) and the motor shaft (6) through labyrinth sealing and dynamic sealing.
6. The asynchronous pitch motor of claim 1, wherein: and the mounting grooves of the rotary variable stator (21) and the transition plate (8) are in clearance fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920971429.3U CN209896866U (en) | 2019-06-26 | 2019-06-26 | Asynchronous variable pitch motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920971429.3U CN209896866U (en) | 2019-06-26 | 2019-06-26 | Asynchronous variable pitch motor |
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| Publication Number | Publication Date |
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| CN209896866U true CN209896866U (en) | 2020-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920971429.3U Active CN209896866U (en) | 2019-06-26 | 2019-06-26 | Asynchronous variable pitch motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110401302A (en) * | 2019-06-26 | 2019-11-01 | 苏州朗高电机有限公司 | A kind of asynchronous pitch motor |
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2019
- 2019-06-26 CN CN201920971429.3U patent/CN209896866U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110401302A (en) * | 2019-06-26 | 2019-11-01 | 苏州朗高电机有限公司 | A kind of asynchronous pitch motor |
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Address after: No.608, FanFeng Road, Xukou Town, Wuzhong District, Suzhou City, Jiangsu Province Patentee after: SUZHOU LEGO MOTORS Co.,Ltd. Address before: 215000 Hefeng Road, Hefeng Town, Wuzhong District Town, Suzhou, Jiangsu Patentee before: SUZHOU LEGO MOTORS Co.,Ltd. |