CN107636939B - Propeller - Google Patents
Propeller Download PDFInfo
- Publication number
- CN107636939B CN107636939B CN201680013494.4A CN201680013494A CN107636939B CN 107636939 B CN107636939 B CN 107636939B CN 201680013494 A CN201680013494 A CN 201680013494A CN 107636939 B CN107636939 B CN 107636939B
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- propeller
- end cover
- motor
- sealing
- output shaft
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/12—Use of propulsion power plant or units on vessels the vessels being motor-driven
- B63H21/17—Use of propulsion power plant or units on vessels the vessels being motor-driven by electric motor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/38—Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Motor Or Generator Frames (AREA)
Abstract
A propeller comprises an outer rotor motor, a motor fixing frame (10), a front end cover (40) with a hole at the center, an output shaft (30) and a propeller (50), wherein the motor fixing frame is of a cavity structure with an opening at one end, the outer rotor motor is fixedly installed in a cavity, the front end cover is connected with the opening end of the motor fixing frame to form a sealed cavity, one end of the output shaft is coaxially connected with an outer rotor (21), the other end of the output shaft penetrates through a center hole of the front end cover to be connected with the propeller, the joint of the output shaft and the center hole of the front end cover. Through set up the space in the middle of outer rotor motor and the motor mount, combine preceding, the connection of rear end cap (80), form inclosed sealed cabin, pour into liquid medium (60) into in sealed cabin, realize the sealed of outer rotor motor, avoid water erosion equipment, play lubricated, the effect of cooling to the motor simultaneously, guarantee propeller steady operation.
Description
Technical Field
The invention belongs to the field of underwater propelling devices, and particularly relates to a propeller.
Background
Thrust systems are power units widely used in surface or underwater vehicles, primarily to propel the vehicle through the sea or to provide controlled forces and moments to adjust the equipment to a desired position and attitude.
Currently, a thrust system used as an underwater vehicle is generally combined by a single motor, a propeller and a guide pipe through a shafting connection. The electric propulsion device and the high-pressure seawater pump are important components in the deep-sea submersible, the underwater motor is the key of the underwater electromechanical devices, the underwater motor based on the direct-current brushless motor has the advantages of large power-volume ratio, large torque, high efficiency and the like, and the outer rotor motor is widely applied.
The sealing of the outer rotor is always a key technology of the submersible motor, and the motor rotates under water pressure, so that the shaft and the shell are easy to leak when the water pressure is higher and the rotating speed is higher, the failure rate caused by the sealing of the motor of the underwater propeller is always higher, and the sealing requirement of the external water pressure on the motor is higher and higher.
The present invention has been made in view of this situation.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art, and provide a propeller, wherein a gap is arranged between an outer rotor motor and a motor fixing frame, a closed sealed cabin is formed by combining the connection of a front end cover and a rear end cover, a liquid medium is injected into the sealed cabin to realize the sealing of the outer rotor motor, the condition that the motor is damaged due to water seepage and water permeation in use is avoided, the safe operation of the motor is effectively ensured, meanwhile, the liquid medium can also lubricate the motor, the effect of cooling the motor is achieved, and the stable and reliable operation of the propeller is ensured.
In order to solve the technical problems, the invention adopts the technical scheme that:
The utility model provides a propeller, includes front end housing, output shaft, the screw of external rotor electric machine, motor mount, central trompil, the motor mount be one end open-ended cavity structure, external rotor electric machine fixed mounting in the cavity, the front end housing is connected with motor mount open end and is formed a sealed chamber, output shaft one end and external rotor coaxial coupling, the other end passes the front end housing centre bore and is connected with the screw, the sealed setting of output shaft and front end housing centre bore junction, external rotor and motor mount inner wall between have the space.
Furthermore, a shaft seal device is arranged between the motor fixing frame and the center hole of the front end cover, a seal groove is coaxially arranged on the inner side of the center hole of the front end cover, the shaft seal device is sleeved on the output shaft and at least partially arranged in the seal groove of the front end cover in a sealing mode, and the section diameter of the seal groove is larger than that of the center hole.
Further, the shaft sealing device is a mechanical sealing component, the mechanical sealing component comprises a movable ring and a static ring which are sequentially sleeved on the output shaft, the static ring is hermetically arranged in the sealing groove, the movable ring is arranged between the outer rotor and the static ring and is contacted with the outer rotor, and the sum of the axial lengths of the movable ring and the static ring is slightly larger than the axial distance between the front end cover and the outer rotor.
Furthermore, the inner wall of the central hole is provided with a baffle plate which axially divides the central hole into a plurality of independent cavities, the baffle plate is provided with an opening for penetrating the output shaft, and the baffle plate is rotationally connected with the output shaft.
Furthermore, the front end cover is coaxially provided with a groove outside the central hole, the section diameter of the groove is larger than that of the central hole, an oil seal is arranged in the groove, and a sealing cover fixedly connected with the front end cover is arranged on one side, close to the propeller, of the front end cover.
Further, the sealed cabin is sealed and filled with liquid media.
Furthermore, the movable ring and the static ring are arranged in the sealed cabin, and the liquid medium circumferentially envelops the movable ring and the static ring.
Further, the independent cavities are internally sealed with liquid media.
Further, the liquid medium is cooling liquid, and the cooling liquid comprises oil liquid and pure water.
Preferably, the liquid medium is cooling oil.
Further, the independent cavity is sealed and filled with lubricating grease.
Furthermore, the motor fixing frame further comprises a rear end cover, and the rear end cover is arranged at one end, far away from the front end cover, of the motor fixing frame.
Furthermore, the motor fixing frame and/or the rear end cover are/is at least provided with one liquid-electric connector, the motor fixing frame is provided with a liquid medium supplementing port for supplementing liquid medium in the sealed cabin, and the liquid medium supplementing port is in sealing connection with the liquid supplementing device.
The propeller wind guide cover further comprises a wind guide cover used for protecting the propeller, and the wind guide cover is arranged on the front end cover through a wind guide cover bracket.
Furthermore, the air guide sleeve is a round table provided with a hollow through cavity along the axis, a large opening of the round table is close to the front end cover, the air guide sleeve support is installed close to the large opening of the round table, and the propeller and the air guide sleeve are coaxial and are arranged between the large opening and the small opening of the round table.
Further, the outer rotor motor is connected with the inner wall of the cavity through a fixing seat, preferably, the fixing seat is in a boss shape, the protruding end is connected with the bottom surface of the cavity, the other end opposite to the protruding end is connected with the outer rotor motor, and a concave cavity or a hole matched with the protrusion is formed in the cavity wall of the bottom of the cavity.
Furthermore, the joints of the rear end cover and the motor fixing frame and the joints of the motor fixing frame and the front end cover are respectively provided with a sealing ring, and the motor fixing frame is provided with a groove for mounting the sealing ring.
Furthermore, the groove for installing the sealing ring is arranged on the end face of the motor fixing frame.
furthermore, a sealing ring is arranged at the joint of the front end cover and the sealing cover, and a groove for mounting the sealing ring is formed in the front end cover.
Furthermore, the sealing ring is an O-shaped sealing ring.
Further, the motor mount be equipped with the mount pad that is used for fixed motor mount, the mount pad be equipped with the through-hole that is used for walking line, pipe, the mount pad is equipped with the screw of cooperation bolt.
After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects.
The invention forms a sealed cabin by arranging a gap between the outer rotor motor and the motor fixing frame and combining the connection of the front end cover and the rear end cover, and injects a liquid medium into the sealed cabin to realize the sealing of the outer rotor motor.
The external rotor motor has the advantages of small volume, short length, large torque, simple and reasonable structure, improved integral integration level, convenient installation and maintenance, good sealing effect of the propeller, stable and reliable operation and stable and reliable operation of the propeller.
The liquid medium can also lubricate the motor and other parts, is beneficial to the high-efficiency operation of the propeller, and can transmit the heat generated by the motor in time, quickly cool the motor and ensure the operation performance of the propeller.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention to its proper form. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic overall structure diagram of another embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view taken along line A-A of another embodiment of the present invention;
Fig. 4 is an exploded view of yet another embodiment of the present invention.
In the figure: 10-motor fixing frame; 21-an outer rotor; 22-an inner stator; 23-a fixed seat; 30-an output shaft; 40-a front end cover; 41-sealing cover; 42-a baffle plate; 50-a propeller; 60-a liquid medium; 61-grease; 71-a rotating ring; 72-stationary ring; 73-oil seal; 80-rear end cap; 90-a dome; 91-a pod support; a 100-O type seal ring; 110-mounting seat.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, 2, 3, and 4, the propeller of the present invention includes an outer rotor motor, a motor fixing frame 10, a front end cover 40 with a hole at the center, an output shaft 30, and a propeller 50, wherein the motor fixing frame 10 is a cavity structure with an opening at one end, the outer rotor motor is fixedly installed in the cavity, the front end cover 40 is connected with the opening end of the motor fixing frame 10 to form a sealed cabin, one end of the output shaft 30 is coaxially connected with the outer rotor, the other end of the output shaft passes through the center hole of the front end cover 40 to be connected with the propeller 50, the connection between the output shaft 30 and the center hole of the front end cover 40 is sealed, and a gap exists between the outer rotor.
Specifically, the external rotor motor comprises an external rotor 21, an internal stator 22 and a fixed seat 23, the internal stator 22 is fixed on the fixed seat 23, the motor fixed mount 10 is cylindrical, one end of the motor fixed mount is provided with an opening, a cavity is formed inside the cavity, the external rotor motor is placed in the cavity of the motor fixed mount 10, the internal stator 22 is connected with the inner wall of the motor fixed mount 10 through the fixed seat 23, the structure and the connection form of the fixed seat 23 are not limited, only the internal stator 22 can be fixed in the cavity and the external rotor motor can normally operate, for example, the internal stator can be a support rod, a connection pad or a limit bead, preferably, the fixed seat is boss-shaped, the protruding end is connected with the bottom surface of the cavity, the other end opposite to the protruding end is connected with the internal stator 22 of the external rotor motor, the cavity wall at the bottom of the external rotor cavity is provided with a, the fixing seat 23 can be fixed on the bottom end face of the cylinder of the motor fixing frame 10 through bolts. The front end cover 40 is in a cover shape and can be buckled with the motor fixing frame 10 and fixedly connected with the motor fixing frame to form a sealed cabin inside, the front end cover 40 is provided with an opening in the center, one end of the output shaft 30 is connected with the outer rotor 21 through a flange, the output shaft 30 and the outer rotor are coaxially arranged, the other end of the output shaft 30 penetrates through a center hole of the front end cover 40 to be connected with a propeller, wherein the center holes of the output shaft 30 and the front end cover 40 are rotatably connected and sealed, sealing arrangement can adopt a sealing ring, an oil seal, an oil injection seal, a mechanical seal and the like, and when the outer rotor 21 drives the output shaft 30 to rotate, external water cannot enter the sealed cabin from the connection position of the output.
A gap with a certain distance is reserved between the outer rotor 21 and the inner wall of the motor fixing frame 10, the outer rotor 21 does not contact the inner wall of the motor fixing frame 10 during operation, as a preferred mode, the sealed cabin is filled with the liquid medium 60, so that the outer part of the outer rotor 21 is kept in contact with the liquid medium 60, the outer rotor 21 rotates in the liquid medium 60 when working, the liquid medium 60 in the sealed cabin generates pressure on the connection part of the output shaft 30 and the central hole of the front end cover 40, and forms a balance or hydraulic pressure reaction force with external hydraulic pressure, so as to ensure that external water does not enter the sealed cabin, further enhance the sealing performance, meanwhile, the outer rotor 21 operates in the liquid medium 60 for a long time, further, the liquid medium 60 is cooling liquid, and the cooling liquid comprises oil liquid and pure water, and can perform the functions of cooling and heat dissipation on the outer rotor, the long-time efficient operation of the motor is protected, preferably, the liquid medium 60 is cooling oil, the sealing, cooling and lubricating effects can be realized, and the external rotor motor and mechanical parts are protected from water erosion.
In order to further improve the sealing performance of the joint of the output shaft 30 and the front end cover 40, a shaft sealing device is arranged between the motor fixing frame 10 and the front end cover 40, a sealing groove is coaxially arranged on the inner side of a central opening of the front end cover 40, the shaft sealing device is sleeved on the output shaft 30 and at least partially and hermetically arranged in the sealing groove of the front end cover 40, the section diameter of the sealing groove is larger than that of a central hole, the shaft sealing device is arranged at the joint of the output shaft 30 and the front end cover 40, the sealing performance of the central hole of the output shaft 30 and the front end cover 40 can be effectively improved, a sealing ring or other sealing devices can be selected for the shaft sealing device, the sealing ring or other sealing devices are arranged in the sealing groove, in order to ensure that the sealing performance is better, the diameter of the sealing groove is smaller than that of the sealing ring or other sealing devices, and after the output shaft 30 is arranged, the sealing performance of the connection between the output shaft 30 and the front end cover 40 is ensured, further, an elastic device or a locking device is arranged to stabilize the sealing ring or other sealing devices, a spring can be sleeved on the output shaft 30 between the outer rotor 21 and the sealing ring or other sealing devices, the spring is always in a compressed state to form thrust on the sealing ring or other sealing devices, or a pressing sheet or an elastic device is arranged on the front end cover 40 or the motor fixing frame 10 to apply force on the sealing ring or other sealing devices to push and press the sealing ring or other sealing devices into the sealing groove, so that the sealing performance of the sealing ring or other sealing devices is ensured.
the shaft seal device is used as a sealing component for enhancing the sealing performance, as a preferable scheme, the shaft seal device is a mechanical sealing component, the mechanical sealing component comprises a movable ring 71 and a fixed ring 72 which are sequentially sleeved on the output shaft 30, the fixed ring 72 is hermetically arranged in a sealing groove, the movable ring 71 is arranged between the outer rotor and the fixed ring 72 and is contacted with the outer rotor and the fixed ring 72, and the sum of the axial lengths of the movable ring 71 and the fixed ring 72 is slightly larger than the axial distance between the front end cover 40 and the outer rotor 21. The movable ring 71 and the fixed ring 72 are sleeved on the output shaft 30, the fixed ring 72 is extruded in the sealing groove, when the outer rotor 21 rotates, the fixed ring 72 and the output shaft 30 rotate relatively, the fixed ring 72 seals the central holes of the output shaft 30 and the front end cover 40, the movable ring 71 is arranged between the fixed ring 72 and the outer rotor 21, the movable ring 71 serves as a pushing device for the fixed ring 72, the fixed ring 72 is pushed in the sealing groove, the fixed ring 72 is ensured to be located in the sealing groove when the motor works or stops, the sealing performance of the fixed ring 72 on the connection position of the output shaft 30 and the front end cover 40 is ensured, and therefore it is ensured that external water cannot enter the sealing cabin. The movable ring 71 and the static ring 72 are arranged in the sealed cabin, the liquid medium 60 circumferentially envelops the movable ring 71 and the static ring 72, the movable ring 71 and the static ring 72 in the sealed cabin are surrounded by the liquid medium, the movable ring 71, the static ring 72 and the output shaft 30 are lubricated and isolated, even if external water enters the sealed cabin, the liquid medium adopting cooling oil is not compatible with water, and due to the difference of oil and water density, the cooling oil still attaches oil to the movable ring 71, the static ring 72, the outer rotor 21 and other parts, so that the water cannot erode mechanical parts, and the stability of internal components of the propeller is fully ensured.
The sealing performance of the front end cover 40 and the output shaft 30 is directly related to the safety of the motor and equipment in a sealed cabin, the inner wall of the central hole is provided with a baffle plate 42 which axially divides the central hole into a plurality of independent cavities, the baffle 42 is provided with an opening for penetrating the output shaft 30, the baffle 42 is tightly connected with the output shaft 30 in a rotating way, the central hole of the front end cover 40 is used for penetrating the output shaft 30 and sealing the output shaft 30, so that external water cannot enter the sealed cabin when the output shaft 30 rotates, the diameter of the central hole is larger than that of the output shaft 30, a gap with a certain distance is reserved between the output shaft 30 and the inner wall of the central hole, the baffle 42 is arranged on the axial inner wall of the central hole, the baffle 42 divides the central hole in the axial direction to form a plurality of independent cavities, the baffle 42 is provided with an opening hole coaxial with the central hole, the diameter of the opening hole is slightly larger than that of the output shaft 30, and the opening holes of the plurality of baffles are coaxial and have the same diameter. Wherein, the opening is connected with the output shaft 30 in a rotating and sealing way; or the baffle is movably arranged on the inner wall of the central hole, the output shaft 30 is tightly connected with the baffle, the output shaft 30 drives the baffle to rotate together when rotating, and the baffle is rotatably connected with the inner wall of the central hole. During installation, the output shaft 30 sequentially penetrates through the open holes of the baffle plates 41, the formed independent cavity can envelop the output shaft 30, the independent cavity can form a shaft seal structure, a plurality of layers of shaft seals are formed in the independent cavities, preferably, lubricating grease 61 is fully filled in the independent cavity in a sealing mode to form a plurality of layers of oil injection sealing structures, the lubricating grease 61 is not fused with water and oil, the sealing performance of liquid media in a sealed cabin can be effectively guaranteed, the liquid media is prevented from being communicated with the independent cavity, the shaft seal effect of the output shaft 30 is enhanced, and the lubricating effect is formed on the output shaft 30. It will be appreciated by those skilled in the art that the baffles described herein are merely members that separate the individual chambers, and that the same effect can be achieved by providing the output shaft with chambers that form a plurality of layers of shaft seal arrangements.
In order to stabilize the sealing performance of the connection part of the central hole of the front end cover 40 and the external water, a groove is coaxially arranged outside the central hole of the front end cover 40, the section diameter of the groove is larger than that of the central hole, an oil seal 73 is arranged in the groove, a sealing cover 41 fixedly connected with the front end cover is arranged on one side, close to the propeller, of the front end cover 40, the oil seal 73 is sealed in the groove through the fixation of the sealing cover 41 and the front end cover 40, the oil seal 73 can seal lubricating grease 61 in an independent cavity, the leakage of the lubricating grease 61 is prevented, and the sealing performance of the contact part of the output shaft and the central hole and the external water is further improved.
In order to enhance the sealing of the bottom of the motor fixing frame 10, the propeller further comprises a rear end cover 80, and the rear end cover 80 is installed at one end, far away from the front end cover 40, of the motor fixing frame 10. The rear end cover 80 is additionally arranged at the bottom of the motor fixing frame 10, after the motor is installed, the rear end cover 80 is installed at the outer bottom of the motor fixing frame 10 to enhance the waterproof sealing performance of the motor and the motor fixing frame 10, preferably, sealing rings are arranged at the joint of the rear end cover 80 and the motor fixing frame 10 and the joint of the motor fixing frame 10 and the front end cover 40, a groove for installing the sealing rings is formed in the motor fixing frame 10, the groove for installing the sealing rings is formed in the end face of the motor fixing frame 10, the sealing rings are O-shaped sealing rings 100, and the sealing performance of the joints of the motor fixing frame 10, the front end cover 40 and the rear end cover 80 can be sealed by arranging the O-shaped sealing rings, and similarly, other sealing devices or devices can be adopted to seal the joints.
The liquid medium 60 in the sealed cabin can be consumed more or less during the operation of the equipment, in order to ensure the state of the sealed cabin which is filled with or is close to the state of being filled with the liquid medium 60 for a long time, the motor fixing frame 10 and/or the rear end cover 80 are/is at least provided with one liquid-electric connector, the motor fixing frame 10 is provided with a liquid medium supplementing port for supplementing the liquid medium 60 in the sealed cabin, and the liquid medium supplementing port is in sealed connection with a liquid supplementing device. The liquid medium 60 in the sealed cabin is monitored through an external control device, after the liquid medium is consumed by a certain amount, the liquid medium supplementing device is operated through the control device, the liquid medium to be supplemented is supplemented into the sealed cabin through a liquid medium supplementing port, the operation of the motor needs to be connected with an electric wire, the motor is communicated with external power supply equipment through a liquid electric connector to supply electric energy for the motor, preferably, the motor fixing frame 10 is provided with a mounting seat 110 for fixing the motor fixing frame, the mounting seat 110 is provided with a through hole for wiring and a pipe, the mounting seat 110 is provided with a screw hole matched with a bolt, the mounting seat 110 is provided with a central through hole, the used electric wire or liquid electric connector, the liquid medium supplementing port and the pipe for supplementing the liquid medium can be arranged in a cavity of the through hole, and when the mounting seat 110 is connected with propelled equipment, a sealing device such as a sealing gasket can be used, the mounting seat 110 is mounted on the equipment to be pushed, so that the liquid electric connector and the liquid medium supplementing port are not contacted with external water, the external equipment is sealed, and the sealing performance of the propeller is further enhanced.
At the end of the propeller 50, in order to protect the propeller 50, the propeller further comprises a dome 90 for protecting the propeller 50, the dome 90 is mounted on the front end cover 40 through a dome support 91, so that the propeller 50 can be prevented from being affected by impurities in water, the propeller 50 is prevented from being damaged or interfering with the working operation of the propeller, the dome 90 is a round table provided with a hollow through cavity along the axis, a large opening of the round table is arranged close to the front end cover, the dome support 91 is mounted close to a large opening of the round table, the propeller 50 and the dome 90 are coaxial and are arranged between the large opening and a small opening of the round table, preferably, the propeller 50 is mounted in the middle position between the large opening and the small opening, the dome 90 is a round table cover with openings at two ends, the projection of the top surface of the round table cover is smaller than that of the bottom surface, the top surface of the round table is a small opening, the bottom surface of the dome 90 is a large opening, namely, the large opening is, the air guide sleeve support is arranged near the port of the bottom surface, the propeller 50 and the air guide sleeve 90 are coaxially arranged and are positioned in the middle of the top surface and the bottom surface, the air guide sleeve is designed into a horn-like structure, but the water drinking amount of the propeller 50 is larger and the water outlet amount is smaller when the propeller works, so that the water flow enters slowly and goes out quickly, and the water pushing effect of the propeller is enhanced.
The invention forms a sealed cabin by arranging a gap between the outer rotor motor and the motor fixing frame and combining the connection of the front end cover and the rear end cover, and injects a liquid medium into the sealed cabin to realize the sealing of the outer rotor motor.
The external rotor motor has the advantages of small volume, short length, large torque, simple and reasonable structure, improved integral integration level, convenient installation and maintenance, good sealing effect of the propeller, stable and reliable operation and stable and reliable operation of the propeller.
The liquid medium can also lubricate the motor and other parts, is beneficial to the high-efficiency operation of the propeller, and can transmit the heat generated by the motor in time, quickly cool the motor and ensure the operation performance of the propeller.
Example one
As shown in fig. 1, the propeller according to this embodiment includes an outer rotor motor, a motor fixing frame 10, a front end cover 40 with a hole at the center, an output shaft 30, a propeller 50, and a rear end cover 80, where the outer rotor motor includes an outer rotor 21, an inner stator 22, and a fixing seat 23, the outer rotor motor is installed on the inner bottom surface of the motor fixing frame 10 through the fixing seat 23, one end of the output shaft 30 is coaxially connected with the outer rotor 21, the other end passes through the center hole of the front end cover 40 to be connected with the propeller 50, a gap exists between the outer rotor and the inner wall of the motor fixing frame 10, and a sealed cabin formed by connecting the.
Specifically, the external rotor motor comprises an external rotor 21, an internal stator 22 and a fixed seat 23, wherein the internal stator 22 is fixed on the fixed seat 23, the motor fixed mount 10 is in a cylindrical shape, one end of the motor fixed mount is provided with an opening, a cavity is formed inside the motor fixed mount 10, the external rotor motor is placed in the cavity of the motor fixed mount 10, the internal stator 22 is connected with the inner wall of the motor fixed mount 10 through the fixed seat 23, the fixed seat 23 is provided with a plurality of support rods, the internal stator 22 is fixed in the cavity through the support rods, and meanwhile, the external rotor motor. The front end cover 40 is in a cover shape and can be buckled with the motor fixing frame 10 and fixedly connected with the motor fixing frame through threads to form a sealed cabin inside, internal threads are arranged at a connecting port of the motor fixing frame 10, an opening is formed in the center of the front end cover 40, one end of the output shaft 30 is connected with the outer rotor 21 through a flange, the output shaft 30 and the outer rotor are coaxially arranged, the other end of the output shaft 30 penetrates through a center hole of the front end cover 40 to be connected with the propeller 50, the output shaft 30 and the center hole of the front end cover 40 are in rotatable sealing connection, and when the outer rotor 21 drives the output shaft 30 to rotate, external water cannot enter the sealed cabin from the connecting position of the output.
A gap with a certain distance is arranged between the outer rotor 21 and the inner wall of the motor fixing frame 10, the outer rotor 21 does not contact the inner wall of the motor fixing frame 10 during operation, cooling oil is filled in the sealed cabin, so that the outer part of the outer rotor 21 is kept in contact with the cooling oil, the outer rotor 21 rotates in the cooling oil during operation, the cooling oil in the sealed cabin generates pressure on the connection part of the output shaft 30 and the central hole of the front end cover 40, and forms balance or water pressure reaction force with external water pressure to ensure that external water does not enter the sealed cabin, the outer rotor 21 runs in the cooling oil for a long time, and can form lubricating, cooling and radiating effects on the outer rotor, protect an outer rotor motor and mechanical parts, and avoid water erosion.
The inner wall of the central hole of the front end cover 40 is provided with a baffle plate 42 which axially divides the central hole into a plurality of independent cavities, the baffle plate 42 is provided with an opening which is used for penetrating the output shaft 30, the baffle plate 42 is closely and rotatably connected with the output shaft 30, the central hole of the front end cover 40 is used for penetrating the output shaft 30 and sealing the output shaft 30, so that external water cannot enter a sealed cabin when the output shaft 30 rotates, the diameter of the central hole is larger than that of the output shaft 30, a gap with a certain distance is reserved between the output shaft 30 and the inner wall of the central hole, the baffle plate 42 is arranged on the axial inner wall of the central hole and axially divides the central hole to form a plurality of independent cavities, the baffle plate 42 is provided with an opening which is coaxial with the central hole, the diameter of the opening is slightly larger than that of the. Pass the trompil of a plurality of baffles 41 with output shaft 30 in proper order during the installation, the independent chamber of formation can envelop output shaft 30, and independent chamber can form the bearing seal structure, and sealed filling lubricating grease 61 in the independent chamber forms a plurality of layers of oiling seal structure, and lubricating grease 61 is all unfused with water, oil, can effectively ensure the liquid medium leakproofness in the sealed cabin, prevents liquid medium and independent cavity intercommunication, and the reinforcing is to the bearing seal effect of output shaft 30, and forms the lubrication action to output shaft 30.
The front end cover 40 is coaxially provided with a groove outside the central hole, the section diameter of the groove is larger than that of the central hole, an oil seal 73 is arranged in the groove, a sealing cover 41 fixedly connected with the front end cover is arranged on one side, close to the propeller, of the front end cover 40, the oil seal 73 is sealed in the groove through the fixation of the sealing cover 41 and the front end cover 40, the oil seal 73 can seal lubricating grease 61 in an independent cavity, the leakage of the lubricating grease 61 is prevented, and the sealing performance of the contact position of the output shaft and the central hole with outside water is further improved.
The invention arranges a gap between the outer rotor motor and the motor fixing frame, combines the connection of the front end cover and the rear end cover to form a closed sealed cabin, injects a liquid medium into the sealed cabin to realize the sealing of the outer rotor motor, and simultaneously arranges a static seal between the output shaft and the front end cover to form a multi-layer sealing protection for the outer rotor motor, thereby avoiding the occurrence of the condition of damaging the motor caused by water seepage and water permeation in use, and effectively ensuring the safe operation of the motor.
Example two
As shown in fig. 2, 3, and 4, the propeller according to this embodiment includes an outer rotor motor, a motor fixing frame 10, a front end cover 40 with a hole at the center, an output shaft 30, a propeller 50, a rear end cover 80, a mechanical sealing member, and a nacelle 90, where the outer rotor motor includes an outer rotor 21, an inner stator 22, and a fixing base 23, the mechanical sealing member includes a moving ring 71 and a stationary ring 72, the outer rotor motor is installed on the inner bottom surface of the motor fixing frame 10 through the fixing base 23, one end of the output shaft 30 is coaxially connected with the outer rotor 21, the other end passes through the center hole of the front end cover 40 and is connected with the propeller 50, a gap exists between the outer rotor and the inner wall of the motor fixing frame 10, and a.
specifically, the external rotor motor comprises an external rotor 21, an internal stator 22 and a fixed seat 23, wherein the internal stator 22 is fixed on the fixed seat 23, the motor fixed frame 10 is in a cylindrical shape, one end of the motor fixed frame is provided with an opening, a cavity is formed inside the motor fixed frame 10, the external rotor motor is placed in the cavity of the motor fixed frame 10, the internal stator 22 is connected with the inner wall of the motor fixed frame 10 through the fixed seat 23, the fixed seat is in a boss shape, a protruding end is connected with the bottom surface of the cavity, the other end opposite to the protruding end is connected with the internal stator 22 of the external rotor motor, the bottom cavity wall of the cavity is provided with a concave cavity or a hole matched with the protrusion, the protrusion is arranged in the concave cavity or the hole, the fixed seat 23 is fixed on the bottom. The front end cover 40 is in a cover shape and can be buckled with the motor fixing frame 10 and fixedly connected with the motor fixing frame through threads to form a sealed cabin inside, internal threads are arranged at a connecting port of the motor fixing frame 10, an opening is formed in the center of the front end cover 40, one end of the output shaft 30 is connected with the outer rotor 21 through a flange, the output shaft 30 and the outer rotor are coaxially arranged, the other end of the output shaft 30 penetrates through a center hole of the front end cover 40 to be connected with a propeller, the output shaft 30 and the center hole of the front end cover 40 are in rotatable sealing connection, and when the outer rotor 21 drives the output shaft 30 to rotate, external water cannot enter the sealed cabin from the connecting position of the output.
A gap with a certain distance is arranged between the outer rotor 21 and the inner wall of the motor fixing frame 10, the outer rotor 21 does not contact the inner wall of the motor fixing frame 10 during operation, cooling oil is filled in the sealed cabin, so that the outer part of the outer rotor 21 is kept in contact with the cooling oil, the outer rotor 21 rotates in the cooling oil during operation, the cooling oil in the sealed cabin generates pressure on the connection part of the output shaft 30 and the central hole of the front end cover 40, and forms balance or water pressure reaction force with external water pressure to ensure that external water does not enter the sealed cabin, the outer rotor 21 runs in the cooling oil for a long time, and can form lubricating, cooling and radiating effects on the outer rotor, protect an outer rotor motor and mechanical parts, and avoid water erosion.
The movable ring 71 and the static ring 72 are sleeved on the output shaft 30, the static ring 72 is extruded in a sealing groove which is coaxially arranged between the front end cover 40 and the central hole, when the outer rotor 21 rotates, the static ring 72 and the output shaft 30 rotate relatively, the static ring 72 seals the central hole of the output shaft 30 and the front end cover 40, the movable ring 71 is arranged between the static ring 72 and the outer rotor 21, the movable ring 71 is used as a pushing device for pushing the static ring 72 into the sealing groove, the static ring 72 is ensured to be positioned in the sealing groove when the motor works or stops, the sealing performance of the static ring 72 on the connection part of the output shaft 30 and the front end cover 40 is ensured, and therefore the fact that external water cannot enter the sealed cabin is ensured.
The movable ring 71 and the static ring 72 in the sealed cabin are surrounded by cooling oil to lubricate and isolate the movable ring 71, the static ring 72 and the output shaft 30, even if external water enters the sealed cabin, the cooling oil is not compatible with the water, and because of the difference of the oil density and the water density, the cooling oil can still attach oil to the movable ring 71, the static ring 72, the outer rotor 21 and other parts, the water can not erode mechanical parts, and the stability of internal components of the propeller is fully ensured.
The rear end cover 80 is arranged at the outer bottom of the motor fixing frame 10, the waterproof sealing performance of the motor and the motor fixing frame 10 is enhanced, sealing rings are arranged at the joints of the rear end cover 80 and the motor fixing frame 10 and the joints of the motor fixing frame 10 and the front end cover 40, the motor fixing frame 10 is provided with a groove for installing the sealing rings, the groove for installing the sealing rings is arranged on the end face of the motor fixing frame 10, the sealing rings are O-shaped sealing rings 100, and the sealing performance of the joints of the motor fixing frame 10, the front end cover 40 and the rear end cover 80 is achieved by arranging the O-shaped.
The motor fixing frame 10 and/or the rear end cover 80 are/is provided with at least one hydraulic-electric connector, the motor fixing frame 10 is provided with a supplement port for cooling oil, and the supplement port is connected with the cooling oil supplement device in a sealing mode. The liquid medium 60 in the sealed cabin is monitored through an external control device, after the liquid medium is consumed by a certain amount, the liquid medium supplementing device is operated through the control device, the liquid medium to be supplemented is supplemented into the sealed cabin through a liquid medium supplementing port, the operation of the motor needs to be connected with an electric wire, the motor is communicated with external power supply equipment through a liquid electric connector to supply electric energy for the motor, preferably, the motor fixing frame 10 is provided with a mounting seat 110 for fixing the motor fixing frame, the mounting seat 110 is provided with a through hole for wiring and a pipe, the mounting seat 110 is provided with a screw hole matched with a bolt, the mounting seat 110 is provided with a central through hole, the electric wire or liquid electric connector used by the motor, the liquid medium supplementing port and the pipe supplementing the liquid medium can be arranged in the cavity of the through hole, and when the mounting seat 110 is connected and installed with pushed equipment, sealing devices such as a sealing, the mounting seat 110 is mounted on the equipment to be pushed, so that the liquid electric connector and the liquid medium supplementing port are not contacted with external water, the external equipment is sealed, and the sealing performance of the propeller is further enhanced.
The air guide sleeve 90 is arranged on the front end cover 40 through the air guide sleeve support 91, the influence of sundries in water on the propeller 50 can be avoided, the propeller 50 is prevented from being damaged or the working operation of the propeller is prevented from being interfered, the air guide sleeve 90 is a round table provided with a hollow through cavity along the axis, a large opening of the round table is arranged close to the front end cover, the air guide sleeve support 91 is arranged close to the large opening of the round table, the propeller 50 and the air guide sleeve 90 are coaxial and are arranged in the middle position between the large opening and the small opening, the air guide sleeve 90 is a round table-shaped sleeve with two open ends, the projection of the top surface of the round table-shaped sleeve is smaller than that of the bottom surface, the top surface of the round table is a small opening, the bottom surface is a large opening, the bottom surface, namely the large opening of the air guide sleeve 90 is arranged close to the front end cover 40, the air guide sleeve support is arranged close to, however, when the propeller 50 works, the water intake is large, the water output is small, the water flow is formed to be slow in and fast out, and the water pushing function of the propeller is enhanced.
The propeller of the embodiment adopts the outer rotor motor, the cooling oil is sealed outside the outer rotor motor, the sealing of the outer rotor motor can be realized, the motor and the lubricating motor can be cooled, the efficient operation of the motor is effectively guaranteed, the service life of the motor is prolonged, the structure is simple, the torque is large, and the stable and reliable operation of the propeller is guaranteed.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A propeller is characterized by comprising an outer rotor motor, a motor fixing frame (10), a front end cover (40) provided with a central hole, an output shaft (30) and a propeller (50), wherein the motor fixing frame (10) is of a cavity structure with an opening at one end, the outer rotor motor is fixedly arranged in a cavity, the front end cover (40) is connected with the opening end of the motor fixing frame (10) to form a sealed cabin, one end of the output shaft (30) is coaxially connected with the outer rotor, the other end of the output shaft penetrates through the central hole of the front end cover (40) to be connected with the propeller (50), the joint of the output shaft (30) and the central hole of the front end cover (40) is sealed, a gap exists between the inner wall of the outer rotor and the motor fixing frame (10), the outer rotor motor comprises an inner stator (22) and a fixing seat (23), the inner, the fixed seat (23) is fixed on the inner side surface of the bottom end surface of the motor fixing frame cylinder through a fastener, the propeller further comprises a rear end cover (80), the rear end cover (80) is installed on the outer side surface of the bottom end surface of the motor fixing frame cylinder in a sealing and covering mode, and the sealing cabin is filled with liquid media (60) used for cooling in a sealing mode.
2. A propeller according to claim 1, wherein a shaft seal device is arranged between the motor fixing frame (10) and the central hole of the front end cover (40), the front end cover (40) is coaxially provided with a sealing groove inside the central hole, the shaft seal device is sleeved on the output shaft (30) and at least partially and hermetically mounted in the sealing groove of the front end cover (40), and the cross-sectional diameter of the sealing groove is larger than that of the central hole.
3. a propeller according to claim 2, wherein the shaft sealing device is a mechanical sealing member, the mechanical sealing member comprises a moving ring (71) and a stationary ring (72) which are sequentially sleeved on the output shaft (30), the stationary ring (72) is sealingly installed in a sealing groove, the moving ring (71) is installed between the outer rotor and the stationary ring (72) and is contacted with each other, and the sum of the axial lengths of the moving ring (71) and the stationary ring (72) is slightly larger than the axial distance between the front end cover (40) and the outer rotor (21).
4. A propeller as claimed in claim 1, wherein the inner wall of the central bore is provided with a baffle (42) dividing the central bore axially into a plurality of separate chambers, the baffle (42) being provided with an opening for passage of the output shaft, the baffle (42) being rotatably connected to the output shaft (30).
5. A propeller as claimed in claim 4, wherein the front end cap (40) is provided with a groove coaxially outside the central hole, the cross-sectional diameter of the groove is larger than that of the central hole, an oil seal (73) is arranged in the groove, and the front end cap (40) is provided with a sealing cover (41) fixedly connected with the front end cap (40) at a side close to the propeller.
6. A propeller according to claim 1, wherein the liquid medium (60) is a coolant comprising oil and/or purified water.
7. A propeller according to claim 1, further comprising a nacelle (90) for protecting the propeller (50), wherein the nacelle (90) is mounted on the front cover (40) by a nacelle bracket (91).
8. The propeller as claimed in claim 7, wherein the air guide sleeve (90) is a circular truncated cone having a hollow through cavity along an axis, a large opening of the circular truncated cone is disposed near the front end cover (40), the air guide sleeve support (91) is mounted near the large opening of the circular truncated cone, and the propeller (50) is coaxial with the air guide sleeve (90) and disposed between the large opening and the small opening of the circular truncated cone.
9. The propeller as claimed in claim 1, wherein sealing rings are disposed at the joints of the rear end cover (80) and the motor fixing frame (10) and at the joints of the motor fixing frame (10) and the front end cover (40), and the motor fixing frame (10) is provided with a groove for mounting the sealing rings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2016/097396 WO2018039937A1 (en) | 2016-08-30 | 2016-08-30 | Propulsive device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107636939A CN107636939A (en) | 2018-01-26 |
| CN107636939B true CN107636939B (en) | 2019-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201680013494.4A Active CN107636939B (en) | 2016-08-30 | 2016-08-30 | Propeller |
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| CN (1) | CN107636939B (en) |
| WO (1) | WO2018039937A1 (en) |
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| CN108494142B (en) * | 2018-05-04 | 2020-09-18 | 天津华顺机电设备维修有限公司 | Waterproof device for output shaft end of direct current motor |
| CN108566018B (en) * | 2018-07-09 | 2023-11-10 | 深圳市八达威科技有限公司 | Rotary sealed brushless DC motor |
| CN108880066B (en) * | 2018-08-21 | 2023-12-22 | 天津长瑞大通流体控制系统有限公司 | Sealing structure and method for motor with rotating shaft in forward and reverse rotation mode in deep sea |
| CN109795656B (en) * | 2019-02-20 | 2024-03-01 | 博雅工道（北京）机器人科技有限公司 | Tail waterproof mechanism of bionic robot fish |
| CN110104155A (en) * | 2019-04-25 | 2019-08-09 | 中国地质大学（武汉） | A kind of underwater robot propeller |
| CN111946560B (en) * | 2020-08-24 | 2023-09-05 | 江苏常友环保科技股份有限公司 | Butt-joint assembly for guide cover of wind motor |
| CN112937817A (en) * | 2021-02-02 | 2021-06-11 | 华中科技大学鄂州工业技术研究院 | Underwater robot driving device and underwater robot |
| JP7296142B2 (en) * | 2021-03-01 | 2023-06-22 | コアレスモータ株式会社 | motor |
| CN113859493B (en) * | 2021-11-12 | 2022-08-12 | 中国船舶科学研究中心 | High-power low-vibration motor direct-drive propulsion device for deep sea |
| CN114275136B (en) * | 2021-12-30 | 2023-03-21 | 深圳市好盈科技股份有限公司 | Underwater propeller |
| CN117751511A (en) * | 2022-03-25 | 2024-03-22 | 广东逸动科技有限公司 | Motor, marine propeller and ship |
| CN116066664A (en) * | 2023-04-07 | 2023-05-05 | 中国空气动力研究与发展中心空天技术研究所 | Combined waterproof cabin for engine |
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Also Published As
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| WO2018039937A1 (en) | 2018-03-08 |
| CN107636939A (en) | 2018-01-26 |
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Address after: 264404 Zone E, blue venture Valley, No. 40, Yangguang Road, Nanhai new area, Weihai City, Shandong Province Patentee after: Zhendi Technology Co., Ltd Address before: 100107 unit 301, unit a, No. 9, Fulin Road, Chaoyang District, Beijing Patentee before: POWERVISION TECH Inc. |