CN101752937B - Compensated underwater brushless DC motor structure and assembly method thereof - Google Patents
Compensated underwater brushless DC motor structure and assembly method thereof Download PDFInfo
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- CN101752937B CN101752937B CN200810229336XA CN200810229336A CN101752937B CN 101752937 B CN101752937 B CN 101752937B CN 200810229336X A CN200810229336X A CN 200810229336XA CN 200810229336 A CN200810229336 A CN 200810229336A CN 101752937 B CN101752937 B CN 101752937B
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Abstract
The invention relates to a compensated underwater brushless DC motor structure and an assembly method thereof. The motor structure comprises a motor end cover subassembly (1), a motor main body (2) and a compensator device (3), wherein the motor end cover subassembly (1) is positioned at the front end of the motor main body (2) and is fixedly connected with the motor main body (2) via bolts, the compensator device (3) is positioned at the tail of the motor main body (2) and connected with the motor main body (2) via bolts, and the compensator device (3) comprises a compensator skin (16), a compensator gland bush (17), a motor tail hood (19), a compensator spring (20) and a compensator screw cap (18). The motor structure has modularized design characteristic, the compensator device and the motor main body can be separated, and different compensator devices can be correspondingly adjusted or replaced for meeting different work environmental requirements so that the motor structure has the advantages of simple and compact structure, convenient assembly and debugging, and safe and reliable working and easy maintenance.
Description
Technical field
The present invention relates to a kind of underwater brushless DC motor structure, is a kind of compensated underwater brushless DC motor structure and assemble method thereof specifically.
Background technology
Motor-driven is one of underwater operation tool and equipment type of drive commonly used.Under the condition of work of deep-sea because the influence of extraneous seawater pressure, the electric machine casing of cavity form is bigger in order to satisfy the common wall thickness of intensity and stability requirement, cause motor comparatively heavy on volume and weight, and motor shaft movable sealing and electric efficiency are a greater impact.Pressure compensator is a kind of oil-filled and regulate the motor external and internal pressure and make its pressure reduction be tending towards a servicing unit that satisfies conditional requests such as movable sealing, casing rigidity by motor cavity.Inner chamber was oil-filled or have form and motor body and a compensator separated structures that pressure compensated motor adopts DC brush usually in the past, the brush direct current motor of oil-filled compensation, the friction of carbon brush for electric machine produces a large amount of heats on the one hand, the oil gasification that causes insulating is expanded, motor cavity pressure is increased rapidly, also bring potential safety hazard when influencing motor working efficiency; On the other hand, the carbon brush frictional dissipation that is immersed in the oil is quickened, and directly influences the ability of the continuous operation of motor.Motor body and compensator separated structures system complex, volume is bigger, and control and maintenance are inconvenient, and the application on middle-size and small-size underwater installation is restricted.In recent years, the brshless DC motor of oil-filled compensation occurs, but its compensating form is comparatively complicated, and structure is comparatively loaded down with trivial details, and the deficiency that the motor internal design technology exists causes motor debugging, assembling difficulty, safeguards inconvenience.
Summary of the invention
The purpose of this invention is to provide a kind of compensated underwater brushless DC motor structure, it has the modularized design characteristics, compensator device and motor main body are separable, require to regulate or to change different compensator device accordingly for adapting to different operational environments, make electric machine structure simply compact, assembling and debugging are convenient, and be simultaneously safe and reliable, easy care; It is main body integrated to have overcome in the prior art compensator device and motor, and its compensating form is comparatively complicated, and structure is comparatively loaded down with trivial details, and the deficiency that the motor internal design technology exists causes motor debugging, assembling difficulty, safeguards inconvenience.
In order to address the above problem, technical scheme provided by the invention is as follows:
This electric machine structure comprises motor end cover component, motor main body and compensator device, and motor end cover component is positioned at the motor body front end, is connected by screw and motor main body; Motor end cover component comprises electric motor end cap gland, rotary seal body and electric motor end cap, and the rotary seal body is fixed on by the electric motor end cap gland in the seal groove of electric motor end cap, and electric motor end cap is connected with motor housing in the motor main body; Described motor main body comprises motor housing, motor stator, rotor, magnet ring, Hall testing circuit plate and cable seal, motor stator and motor housing are connected, rotor is installed in motor stator inside, magnet ring is installed on the rotor, Hall testing circuit plate all is connected with motor housing with cable seal, and insulation hydraulic pressure oil content is distributed in the motor main body; Motor main body and compensator device are for dividing body structure, compensator device comprises compensator leather bag, compensator gland, motor tail-hood, compensator spring and compensator nut, the compensator leather bag is embedded in the seal groove of motor housing, be fixed on the motor housing by the extruding of motor tail-hood, the outside end face of compensator gland contacts with the compensator leather bag, compensator spring one end supports the compensator gland, and the other end supports the compensator nut, and the compensator nut is threaded with the motor tail-hood.
The rotary seal body is the general plug envelope of rotation;
Be provided with oil-filled mouthful on motor housing, oil-filled mouthful by the stifled sealing of oil-filled sealing;
The motor tail-hood is the cavity structure with axis of guide, has the hole that communicates with external environment on its outer wall; The motor tail-hood is round table-like revolving body;
The outside of the axis of guide of motor tail-hood contacts with the inner surface of the radial wall on compensator gland top;
The bottom of compensator gland is an arc, closely contacts with the compensator leather bag.
The assemble method of this compensated underwater brushless DC motor structure comprises the steps:
The first step is at first packed rotor in the motor stator inner chamber, then magnet ring is fixed on the rotor; Before rotor and rotor, under the guiding of end bearing, motor end cover component is installed, itself and motor main body are connected as a single entity;
Second step tentatively was installed in Hall testing circuit plate on the motor housing earlier, and then debugging and definite Hall testing circuit plate are fixed on the position of motor housing; Hall testing circuit plate has with cable and is electrically connected, and cable seal is connected on the motor housing, and cable passes cable seal and is connected with external power;
In the 3rd step, the compensator leather bag embeds in the seal groove of motor housing, is fixedly connected on the motor housing after motor tail-hood and the assembling of compensator gland, and compensator device is connected with the motor main body by screw;
The 4th step after the motor main body is oil-filled, was placed on the compensator spring in the axis of guide through hole of motor tail-hood again, at last the compensator nut was installed on the motor tail-hood.
Compared with prior art, the present invention has the following advantages:
1. the present invention has adopted modularized design on the motor general structure.Electric machine structure can be changed the compensator device module of motor afterbody flexibly according to the different work requirement; According to motor depth of implements, temperature and task different under water, the design form of motor compensator can change thereupon, and the replacement of the realization motor compensator module that this designed motor structure can fast and flexible improves the restructural performance of motor; In addition, modular design has made things convenient for the maintenance and the maintenance of motor.
2. motor pressure compensator device of the present invention adopts spring-bladder structure, guarantees that electric machine structure has a good adaptive capacity to sea water advanced, has simplified electric machine structure simultaneously, has alleviated motor weight.By Pascal's theorem and Newtonian mechanics equilibrium principle as can be known spring-bladder pressure compensation structure play the effect of balance motor external and internal pressure, and under the pretightning force effect of external spring, can satisfy in the motor and press, and its inside and outside differential pressure value can be controlled by the rigidity and the decrement that change the compensator spring all the time greater than external pressure.
3, the compensator nut of motor pressure compensator device of the present invention can separate with the motor tail-hood, when adapting to that the job task needs of different depth are changed the compensator spring of different decrements or different-stiffness under water, only need open the replacing of compensator nut and get final product, simple and convenient.
4. the science that the invention solves motor internal position transducer-Hall testing circuit plate is installed and fixation problem.The relative position information of rotor is to obtain by the Hall element check-out console of motor internal and the relative position measurement of magnet ring.The present invention is connected by first fixed electrical machinery rotor and magnet ring, debug then, the fixing position of Hall testing circuit plate, thereby overcome in the past electric machine structure design because of the scientific design of having ignored the Hall element check-out console with rationally lay, and cause the motor debug difficulties, even the Hall element damage appears.The structure of designed motor shell of the present invention and Hall testing circuit plate has made things convenient for the installation and the adjustment of motor hall sensing device, the reliability and the fail safe that have improved motor.
5. electric machine structure of the present invention has oil-filled mode characteristics simply and easily.This motor housing has structurally designed special oil-filled mouthful, and can the stifled sealing of filling oil port of oil-filled sealing.Under different temperatures, degree of depth service condition, the compressive state of motor cavity hydraulic oil also is not quite similar, and the oil-filled mouth of this special use has made things convenient for motor to replenish hydraulic oil at any time according to inner chamber oil pressure state, and it is simple, convenient, quick.
6. the present invention ensures that also motor has reliable rotary seal performance.The rotary seal body at electric motor end cap and rotor output shaft place is selected the general plug envelope of rotation for use, compare with normally used rotary oil seal, rotate general plug envelope and have the maximum rotative speed advantages of higher that physical dimension is little, the anti-friction performance is good, operating temperature range big, allow.The hydraulic oil of the certain proportioning of motor cavity plays the effect of balance external pressure on the one hand, hydraulic oil forms the very thin oil film of one deck between general plug envelope of rotation and electric machine rotational axis on the other hand, this oil film had both played good movable sealing effect, reduced simultaneously to rotate the friction between general plug envelope and the electric machine rotational axis again, improved efficiency of motor, prolong the working life of general plug, thereby improved the motor ability of running continuously.
Description of drawings
Fig. 1 is an electric machine structure outline drawing of the present invention;
Fig. 2 is an electric machine structure cutaway view of the present invention.
Embodiment
Embodiment 1: electric machine structure
Adopt modularized design on this electric machine structure, main modular comprises motor end cover component 1, motor main body 2 and compensator device 3.Wherein: motor end cover component 1 is positioned at the motor front end, and is connected by motor screw and motor main body 2 radially, and its interface position adopts 0 shape sealing ring to carry out radially static seal; Compensator device 3 is positioned at the motor afterbody, and by motor shaft to screw and motor main body 2 be connected, its interface position is realized the end face static seal by axial compression compensator leather bag sealing ring.
Described motor end cover component 1 comprises electric motor end cap gland 4, rotary seal body 5, the preceding end bearing 7 of rotor and electric motor end cap 6, wherein the preceding end bearing 7 of rotor is positioned in the bearing groove of electric motor end cap 6 by the shaft shoulder of rotor 8, rotary seal body 5 is fixed on by electric motor end cap gland 4 in the seal groove of electric motor end cap 6, and electric motor end cap gland 4 utilizes axial attachment screw to be connected on the electric motor end cap 6; The positioning spigot of the motor housing 10 in the positioning spigot of electric motor end cap 6 and the motor main body 2 is with certain tolerance fit assembling, and realize and being connected of motor main body 2 by motor screw radially, the interface position of its stop portion adopts 0 shape sealing ring to carry out radially static seal, and rotary seal body 5 is selected the general plug envelope of rotation for use;
Described motor main body 2 comprises motor housing 10, motor stator 9, rotor 8, rotor rear end bearing 11, magnet ring 12, quilting rivet 13, Hall testing circuit plate 14, cable seal 21 and oil-filled sealing stifled 15, wherein motor stator 9 is connected by interference fit with the inner chamber of motor housing 10, rotor 8 is suspended in motor stator 9 inner chambers, two ends are respectively by 11 supportings of end bearing before the rotor 7 and rotor rear end bearing and utilize the shaft shoulder of rotor 8 itself spacing, rotor rear end bearing 11 is embedded in the bearing groove in motor housing 10 chambeies, magnet ring 12 is connected on the rotor 8 by quilting rivet 13 radially, Hall testing circuit plate 14 is installed on the motor housing 10, remain in certain distance range with magnet ring 12, cable seal 21 is connected on the motor housing 10 by screw thread, and utilize the 0 shape sealing ring that screws on the extruding end face to realize static seal, simultaneously, cable 22 passes cable seal 21, screw thread by self screws the static seal of realizing between cable 22 and the cable seal 21, cable 22 is connected with external power, and oil-filled sealing stifled 15 utilizes screw thread to screw 0 shape sealing ring on the extruding end face and realizes static seal and be connected with motor housing 10;
Described compensator device 3 comprises compensator leather bag 16, compensator gland 17, motor tail-hood 19, compensator spring 20 and compensator nut 18, wherein the sealing ring of compensator leather bag 16 embeds in the 0 shape circle seal groove of motor housing 10, extruding by motor tail-hood 19 realizes fixing and end face seal, motor tail-hood 19 is the cavity structures with axis of guide, have the hole that communicates with external environment on its outer wall, it is round table-like revolving body, the curved end of compensator gland 17 contacts with compensator leather bag 16, to pass to compensator leather bag 16 from the power of extraneous and compensator spring 20 and then be delivered to insulation hydraulic oil 23 in the motor cavity, the pilot hole of compensator gland 17 with certain cooperation ring set on the axis of guide of motor tail-hood 19, the outside of the axis of guide of motor tail-hood 19 contacts with the inner surface of the radial wall on compensator gland 17 tops, compensator spring 20 is positioned at the through hole of the axis of guide of motor tail-hood 19, one end is supported on compensator gland 17 internal chamber walls, the screw thread of the other end by compensator nut 18 screws and compresses, and is fixed in the cavity that compensator gland 17 and motor tail-hood 19 form with certain pretightning force.
Embodiment 2: assemble method
As shown in Figure 2, motor stator 9 and motor housing 10 are assembled into one under the hot melt state; Rotor rear end bearing 11 is embedded in the bearing groove in motor housing 10 chambeies; Rotor 8 is packed in motor stator 9 inner chambers, and wherein the bottom embeds in the rotor rear end bearing 11; Magnet ring 12 is connected on the rotor 8 by quilting rivet 13 radially; End bearing 7 is positioned the bearing groove of electric motor end cap 6 before the rotor; Be fixed on the mode of lip limit opening towards the motor inboard of rotary seal body 5 in the seal groove of electric motor end cap 6 by electric motor end cap gland 4; Electric motor end cap gland 4 utilizes axial attachment screw to be connected on the electric motor end cap 6; Before rotor 8 and rotor under the guiding of end bearing 7, the positioning spigot of the motor housing 10 in the positioning spigot of electric motor end cap 6 and the motor main body 2 is with certain tolerance fit assembling, and realize and being connected of motor main body 2 that by motor screw radially the interface position of its stop portion adopts 0 shape sealing ring to carry out radially static seal; Tentatively Hall testing circuit plate 14 is installed on the motor housing 10 by screw earlier, this moment the electrical power preliminary operation, adjust Hall testing circuit plate 14 to best output waveform state according to waveform around the rotational of rotor 8, tighten the position of the good Hall testing circuit of screw plate 14 at motor housing 10; Cable seal 21 is connected on the motor housing 10 by screw thread, and utilize the 0 shape sealing ring that screws on the extruding end face to realize static seal, simultaneously, cable 22 passes cable seal 21, screws the static seal of realizing between cable 22 and the cable seal 21 by self screw thread; The motor power-supply wire of welding cable 22 correspondences, Hall detection line; The sealing ring of compensator leather bag 16 is embedded in the 0 shape circle seal groove of motor housing 10, and the extruding of the motor tail-hood 19 of compensator gland 17 by sling realizes fixing and end face seal;
Utilize in the motor main body 2 the oil-filled sealing on the motor housing 10 stifled 15, under certain negative pressure, motor cavity is being vacuumized, guarantee that the motor cavity that is surrounded by motor end cover component 1, motor main body 2 and compensator leather bag 16 is vacuum or near vacuum state; Insulation hydraulic oil 23 with certain proportioning injects motor cavity then, makes it oil-filled abundant, and this moment, compensator leather bag 16 was protruding to the motor outside, simultaneously oil-filled sealing stifled 15 and motor housing 10 was screwed and sealed; To pack in the pilot hole of compensator spring 20 by motor tail-hood 19, and realize pretension by compensator nut 18, the size of its pretightning force can be controlled by rigidity of regulating compensator spring 20 or the screw-in depth that changes compensator nut 18.So far, the brshless DC motor assembling that carries the bladder pressure compensator of spring is finished.
Claims (8)
1. compensated underwater brushless DC motor structure, comprise motor end cover component (1), motor main body (2) and compensator device (3), described motor end cover component (1) comprises electric motor end cap gland (4), rotary seal body (5) and electric motor end cap (6), described motor main body (2) comprises motor housing (10), motor stator (9), rotor (8), magnet ring (12), Hall testing circuit plate (14) and cable seal (21), electric motor end cap (6) is connected with motor housing (10), and insulation hydraulic oil (23) is distributed in the motor main body (2); It is characterized in that: motor main body (2) and compensator device (3) are for dividing body structure, compensator device (3) comprises compensator leather bag (16), compensator gland (17), motor tail-hood (19), compensator spring (20) and compensator nut (18), motor tail-hood (19) is the cavity structure with axis of guide, have the hole that communicates with external environment on its outer wall, compensator leather bag (16) is embedded in the seal groove of motor housing (10), be fixed on the motor housing (10) by motor tail-hood (19) extruding, the outside end face of compensator gland (17) contacts with compensator leather bag (16), compensator spring (20) one ends support compensator gland (17), the other end supports compensator nut (18), and compensator nut (18) is threaded with motor tail-hood (19).
2. compensated underwater brushless DC motor structure according to claim 1 is characterized in that: rotary seal body (5) is the general plug envelope of rotation.
3. compensated underwater brushless DC motor structure according to claim 1 is characterized in that: be provided with oil-filled mouthful on motor housing (10).
4. compensated underwater brushless DC motor structure according to claim 3 is characterized in that: oil-filled mouthful by oil-filled sealing stifled (15) sealing.
5. compensated underwater brushless DC motor structure according to claim 1 is characterized in that: motor tail-hood (19) is round table-like revolving body.
6. compensated underwater brushless DC motor structure according to claim 1 is characterized in that: the outside of the axis of guide of motor tail-hood (19) contacts with the inner surface of the radial wall on compensator gland (17) top.
7. compensated underwater brushless DC motor structure according to claim 1 is characterized in that: the bottom of compensator gland (17) is an arc, closely contacts with compensator leather bag (16).
8. the assemble method of compensated underwater brushless DC motor structure as claimed in claim 1 comprises the steps:
The first step is at first packed rotor (8) in motor stator (9) inner chamber, then magnet ring (12) is fixed on the rotor (8); Before rotor (8) and rotor, under the guiding of end bearing (7), motor end cover component (1) is installed, itself and motor main body (2) are connected as a single entity;
Second step tentatively was installed in Hall testing circuit plate (14) on the motor housing (10) earlier, and then debugging and definite Hall testing circuit plate (14) are fixed on the position of motor housing (10); Hall testing circuit plate (14) has with cable (22) and is electrically connected, and cable seal (21) is connected on the motor housing (10), and cable (22) passes cable seal (21) and is connected with external power;
The 3rd step, compensator leather bag (16) embeds in the seal groove of motor housing (10), motor tail-hood (19) is fixedly connected on the motor housing (10) with compensator gland (17) assembling back extruding, and compensator device (3) is connected with motor main body (2) by screw;
The 4th step after motor main body (2) is oil-filled, was placed on compensator spring (20) in the axis of guide through hole of motor tail-hood (19) again, at last compensator nut (18) was installed on the motor tail-hood (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810229336XA CN101752937B (en) | 2008-12-05 | 2008-12-05 | Compensated underwater brushless DC motor structure and assembly method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810229336XA CN101752937B (en) | 2008-12-05 | 2008-12-05 | Compensated underwater brushless DC motor structure and assembly method thereof |
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| CN101752937A CN101752937A (en) | 2010-06-23 |
| CN101752937B true CN101752937B (en) | 2011-06-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US11837935B2 (en) | 2021-02-02 | 2023-12-05 | Black & Decker, Inc. | Canned brushless motor |
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| CN102862665A (en) * | 2011-07-05 | 2013-01-09 | 苏州桑泰海洋仪器研发有限责任公司 | Pressure balance retainer for underwater oil charge system |
| WO2016119476A1 (en) * | 2015-01-29 | 2016-08-04 | 中山大洋电机股份有限公司 | Mounting structure of hall circuit board, and brushless direct current motor applying same |
| CN104935104B (en) * | 2015-06-30 | 2018-03-13 | 大族激光科技产业集团股份有限公司 | A kind of pressure-compensated oil submersible motor system |
| CN106208488A (en) * | 2016-07-13 | 2016-12-07 | 西安微电机研究所 | A kind of submarine navigation device propelling brushless direct current motor |
| CN106340991A (en) * | 2016-09-27 | 2017-01-18 | 青岛哈工海洋工程技术有限公司 | Underwater brushless motor |
| CN113659757A (en) * | 2016-12-06 | 2021-11-16 | 中国计量大学 | Deep diving infinitely can be through being full of the totally enclosed type that oil has come to implement the waterproof seal of top support nature for a long time and drag the electrical machinery |
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| CN106787382A (en) * | 2017-01-21 | 2017-05-31 | 胜利油田胜利泵业有限责任公司 | Motor pressure compensator under a kind of high power oil-filled deep diving |
| CN110535277A (en) * | 2019-08-19 | 2019-12-03 | 浙江大学 | A kind of compensation oil charging motor of deep sea pressure based on leather bag structure |
| CN112087089B (en) * | 2020-09-09 | 2023-06-06 | 哈尔滨工业大学 | High-torque deep sea motor |
| CN114499078B (en) * | 2020-10-28 | 2024-01-30 | 中国科学院沈阳自动化研究所 | Underwater robot motor assembly device with error compensation function |
| CN112531956B (en) * | 2020-10-30 | 2021-10-01 | 北京精密机电控制设备研究所 | Outboard deep water pressure self-balancing propulsion motor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11837935B2 (en) | 2021-02-02 | 2023-12-05 | Black & Decker, Inc. | Canned brushless motor |
| US11855521B2 (en) | 2021-02-02 | 2023-12-26 | Black & Decker, Inc. | Brushless DC motor for a body-grip power tool |
| US11870316B2 (en) | 2021-02-02 | 2024-01-09 | Black & Decker, Inc. | Brushless motor including a nested bearing bridge |
| US11876424B2 (en) | 2021-02-02 | 2024-01-16 | Black & Decker Inc. | Compact brushless motor including in-line terminals |
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| CN101752937A (en) | 2010-06-23 |
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