CN112283325A - Magnetic liquid sealed lubricating transmission device - Google Patents
Magnetic liquid sealed lubricating transmission device Download PDFInfo
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- CN112283325A CN112283325A CN202011057001.1A CN202011057001A CN112283325A CN 112283325 A CN112283325 A CN 112283325A CN 202011057001 A CN202011057001 A CN 202011057001A CN 112283325 A CN112283325 A CN 112283325A
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- rotating shaft
- ring
- magnetic
- pole shoe
- pole
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
- F16H1/06—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with parallel axes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0467—Elements of gearings to be lubricated, cooled or heated
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0467—Elements of gearings to be lubricated, cooled or heated
- F16H57/0469—Bearings or seals
- F16H57/0472—Seals
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/048—Type of gearings to be lubricated, cooled or heated
- F16H57/0493—Gearings with spur or bevel gears
Abstract
The invention discloses a magnetic liquid sealing and lubricating transmission device which comprises a shell, a first rotating shaft, a second rotating shaft and a first pole shoe, the magnetic bearing comprises a second pole shoe, a first magnetic ring, a second magnetic ring and a pole shoe ring, wherein a cavity is formed in the shell, a first rotating shaft and a second rotating shaft are arranged in the shell in a penetrating mode at intervals, power is transmitted between the first rotating shaft and the second rotating shaft through a gear pair, the first pole shoe and the second pole shoe are arranged in the cavity, the first rotating shaft and the second rotating shaft are arranged on the first pole shoe and the second pole shoe in a penetrating mode, the first magnetic ring and the second magnetic ring are located between the first pole shoe and the second pole shoe on the left side and the right side, the first magnetic ring and the second magnetic ring are arranged around the first rotating shaft and the second rotating shaft and located between the first pole shoe and the second pole shoe, the pole shoe ring is located between the first magnetic ring and the second magnetic ring, and the pole shoe ring. The magnetic liquid sealing and lubricating device disclosed by the invention has the functions of sealing the magnetic liquid and lubricating.
Description
Technical Field
The invention relates to the technical field of transmission equipment, in particular to a magnetic liquid seal lubrication transmission device.
Background
The power lubricating transmission device has the characteristics of reliability, durability, strong bearing capacity, space saving, low energy consumption, low noise, small vibration and the like. In order to reduce the abrasion of transmission parts in a lubrication transmission device, improve the transmission stability, reduce the vibration in the working process of the device, reduce the noise, reduce the friction energy consumption, improve the torque transmission effect, prevent external impurities from entering and leaking a lubricant in the device and prolong the service life of the device, additional sealing and lubricating measures are needed in the device.
In the related art, in the field of aviation, because the working environment is in a weightless state, the lubricating and sealing modes in the related art have the problems of lubricant drift or sealing element failure and the like, the lubricating and sealing effects are greatly reduced, and the normal work of a transmission device is influenced.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, the embodiment of the invention provides a magnetic liquid sealing and lubricating transmission device, magnetic liquid cannot float around under the action of magnetic field force, sealing failure of the magnetic liquid is avoided, and abrasion between gear pairs can be reduced.
The magnetic liquid seal lubrication transmission device according to the embodiment of the invention comprises: a housing having a cavity therein; the first rotating shaft and the second rotating shaft are arranged in the shell in a penetrating mode and are arranged at intervals, and power is transmitted between the first rotating shaft and the second rotating shaft through a gear pair; the first pole shoe and the second pole shoe are arranged in the cavity, the first pole shoe and the second pole shoe are arranged at intervals in the axial direction of the first rotating shaft, the first rotating shaft penetrates through the first pole shoe and the second pole shoe, magnetic liquid is filled between the first pole shoe and the first rotating shaft and between the first pole shoe and the second rotating shaft, the second rotating shaft penetrates through the first pole shoe and the second pole shoe, and magnetic liquid is filled between the second pole shoe and the first rotating shaft and between the second pole shoe and the second rotating shaft; a first magnetic ring and a second magnetic ring, which are located between the first pole shoe and the second pole shoe in the axial direction of the first rotating shaft, the first magnetic ring is disposed around the first rotating shaft and the second rotating shaft, the second magnetic ring is disposed around the first rotating shaft and the second rotating shaft, the first magnetic ring and the second magnetic ring are arranged at intervals in the axial direction of the first rotating shaft and are located between the first pole shoe and the second pole shoe, the end surface of the first magnetic ring, which is far away from the second magnetic ring, is in contact with the end surface of the first pole shoe, which is close to the second pole shoe, and the end surface of the second magnetic ring, which is far away from the first magnetic ring, is in contact with the end surface of the second pole shoe, which is close to the first pole shoe; the pole shoe ring is located between the first magnetic ring and the second magnetic ring in the axial direction of the first rotating shaft, one end face of the pole shoe ring is in contact with the end face, adjacent to the second magnetic ring, of the first magnetic ring, the other end face of the pole shoe ring is in contact with the end face, adjacent to the first magnetic ring, of the second magnetic ring, the pole shoe ring is arranged around the gear pair, and magnetic liquid is filled between the gear pair and the inner circumferential surface of the pole shoe ring.
According to the magnetic liquid seal lubrication transmission device provided by the embodiment of the invention, the magnetic liquid between the pole shoe and the rotating shaft can prevent external impurities from entering, the running stability of the transmission device is improved, the magnetic liquid cannot float around under the action of magnetic field force in a weightless environment, the failure of magnetic liquid seal is avoided, in addition, the traditional lubricating oil lubrication is replaced by the magnetic liquid lubrication, the abrasion between gear pairs can be reduced, the transmission stability is improved, and the apparent viscosity of the magnetic liquid can be improved by an external magnetic field, so that the oil film bearing capacity is improved. In addition, the magnetic liquid sealing and lubricating device provided by the embodiment of the invention has the advantages that the pole shoe ring arranged between the first magnetic ring and the second magnetic ring enables the magnetic liquid to be in a designated area under the action of a magnetic field, the lubrication is reliable, the running stability of the device is improved, the consumption of the magnetic liquid is small, the magnetic liquid sealing and the lubrication share the same magnetic circuit, the sealing and the lubrication of the same magnetic circuit are realized, the volume is saved, and the weight is reduced.
In some embodiments, the first rotating shaft and the second rotating shaft are arranged in parallel.
In some embodiments, the first pole piece has a first through hole and a second through hole extending in an axial direction of the first rotating shaft, the second pole piece has a third through hole and a fourth through hole extending in an axial direction of the first rotating shaft, the first rotating shaft is inserted into the first pole piece and the second pole piece through the first through hole and the third through hole, the second rotating shaft is inserted into the first pole piece and the second pole piece through the second through hole and the fourth through hole, an inner circumferential surface of the first through hole is provided with a plurality of first pole teeth arranged at intervals in the axial direction of the first rotating shaft, a magnetic liquid is filled between an inner circumferential surface of the plurality of first pole teeth and an outer surface of the first rotating shaft, an inner circumferential surface of the second through hole is provided with a plurality of third pole teeth, the third pole teeth are arranged at intervals in the axial direction of the first rotating shaft, magnetic liquid is filled between the inner surface of the third pole teeth and the outer surface of the second rotating shaft, the inner peripheral surface of the third through hole is provided with second pole teeth, the second pole teeth are arranged at intervals in the axial direction of the first rotating shaft, magnetic liquid is filled between the inner surface of the second pole teeth and the outer surface of the first rotating shaft, the inner peripheral surface of the fourth through hole is provided with fourth pole teeth, the fourth pole teeth are arranged at intervals in the axial direction of the first rotating shaft, and magnetic liquid is filled between the inner surface of the fourth pole teeth and the outer surface of the second rotating shaft.
In some embodiments, the gear pair includes a first gear and a second gear, the first gear is sleeved on the first rotating shaft, the second gear is sleeved on the second rotating shaft, the first gear is engaged with the second gear, a magnetic liquid is filled between an outer circumference of the first gear and an inner circumferential surface of the pole shoe ring, and a magnetic liquid is filled between an outer circumference of the second gear and the inner circumferential surface of the pole shoe ring.
In some embodiments, the pole shoe ring includes a base ring and a protrusion, an outer peripheral surface of the base ring contacts an inner surface of the housing, the protrusion is disposed on an inner peripheral surface of the base ring, the protrusion protrudes in a direction away from the base ring, and magnetic liquid is filled between the protrusion and an outer periphery of the first gear and between the protrusion and an outer periphery of the second gear.
In some embodiments, an inner circumferential surface of the first magnetic ring, an inner circumferential surface of the second magnetic ring, and an inner circumferential surface of the base ring are aligned in an axial direction of the rotating shaft.
In some embodiments, the base ring and the boss are integrally formed.
In some embodiments, the magnetic fluid sealing and lubricating transmission device further includes a first magnetism isolating ring and a second magnetism isolating ring, the first rotating shaft is disposed through the first magnetism isolating ring and the second magnetism isolating ring, the second rotating shaft is disposed through the first magnetism isolating ring and the second magnetism isolating ring, an outer peripheral surface of the first magnetism isolating ring contacts with an inner peripheral surface of the first magnetic ring, an end surface of the first magnetism isolating ring, which is far away from the second magnetism isolating ring, contacts with an end surface of the first pole shoe, which is close to the second pole shoe, an outer peripheral surface of the second magnetism isolating ring contacts with an inner peripheral surface of the second magnetic ring, and an end surface of the second magnetism isolating ring, which is far away from the first magnetism isolating ring, contacts with an end surface of the second pole shoe, which is close to the first pole shoe.
In some embodiments, a preset gap is formed between the first magnetism isolating ring and the first rotating shaft in the radial direction of the first rotating shaft, a preset gap is formed between the first magnetism isolating ring and the second rotating shaft in the radial direction of the second rotating shaft, a preset gap is formed between the second magnetism isolating ring and the first rotating shaft in the radial direction of the first rotating shaft, and a preset gap is formed between the second magnetism isolating ring and the second rotating shaft in the radial direction of the second rotating shaft.
In some embodiments, a dimension of the first magnetism isolating ring in an axial direction of the first rotating shaft is equal to a dimension of the first magnetism isolating ring in the axial direction of the first rotating shaft, and a dimension of the second magnetism isolating ring in the axial direction of the first rotating shaft is equal to a dimension of the second magnetism isolating ring in the axial direction of the first rotating shaft.
Drawings
Fig. 1 is a schematic structural diagram of a magnetic fluid seal lubrication transmission device according to an embodiment of the invention.
Fig. 2 is a partially enlarged schematic view of a region B in fig. 2.
Reference numerals:
the number of the housings 1 is such that,
a first rotating shaft 2, a second rotating shaft 3,
a first pole piece 4, a first pole tooth 401, a third pole tooth 402, a first through hole 403, a second through hole 404,
a second pole piece 5, a second pole tooth 501, a fourth pole tooth 502, a third through hole 503, a fourth through hole 504,
a first magnetic ring 6, a second magnetic ring 7,
a first magnetism isolating ring 9, a second magnetism isolating ring 10, a first gear 11, a second gear 12 and a magnetic loop 13.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
As shown in fig. 1 and 2, the magnetic fluid seal lubrication transmission device according to the embodiment of the present invention includes a housing 1, a first rotating shaft 2, a second rotating shaft 3, a first pole shoe 4, a second pole shoe 5, a first magnetic ring 6, a second magnetic ring 7, a pole shoe ring 8, a first magnetism isolating ring 9, and a second magnetism isolating ring 10.
Casing 1 is inside to have the cavity, and first pivot 2 and second pivot 3 are all worn to establish in casing 1 and interval arrangement, pass through gear pair transmission power between first pivot 2 and the second pivot 3. As shown in fig. 1, the first rotating shaft 2 and the second rotating shaft 3 are horizontally arranged in the housing 1 along the left-right direction, the first rotating shaft 2 and the second rotating shaft 3 are arranged at intervals in the up-down direction, and the left end and the right end of the first rotating shaft 2 and the second rotating shaft 3 are located outside the housing 1. Preferably, the materials of the first rotating shaft 2 and the second rotating shaft 3 are both magnetic conductive materials.
The first pole shoe 4 and the second pole shoe 5 are both arranged in the cavity, the first pole shoe 4 and the second pole shoe 5 are arranged at intervals in the axial direction of the first rotating shaft 2, the first rotating shaft 2 penetrates through the first pole shoe 4 and the second pole shoe 5, magnetic liquid is filled between the first pole shoe 4 and the first rotating shaft 2 and between the first pole shoe 4 and the second rotating shaft 3, the second rotating shaft 3 penetrates through the first pole shoe 4 and the second pole shoe 5, and magnetic liquid is filled between the second pole shoe 5 and the first rotating shaft 2 and between the second pole shoe 5 and the second rotating shaft 3.
As shown in fig. 1, a first gap is formed between the first pole piece 4 and the first rotating shaft 2, a second gap is formed between the first pole piece 4 and the second rotating shaft 3, magnetic liquid is filled in the first gap and the second gap, a third gap is formed between the second pole piece 5 and the first rotating shaft 2, a fourth gap is formed between the second pole piece 5 and the second rotating shaft 3, and magnetic liquid is filled in the third gap and the fourth gap.
Preferably, the materials of the first pole shoe 4 and the second pole shoe 5 are magnetic materials, and particularly, the materials of the first pole shoe 4 and the second pole shoe 5 are electrician pure iron. It will be appreciated that the material of the first and second pole pieces 4, 5 is not limited to being electrician pure iron.
A first magnetic ring 6 and a second magnetic ring 7 are arranged between the first pole shoe 4 and the second pole shoe 5 in the axial direction of the first rotating shaft 2, the first magnetic ring 6 is arranged around the first rotating shaft 2 and the second rotating shaft 3, the second magnetic ring 7 is arranged around the first rotating shaft 2 and the second rotating shaft 3, and the first magnetic ring 6 and the second magnetic ring 7 are arranged at intervals in the axial direction of the first rotating shaft 2 and are located between the first pole shoe 4 and the second pole shoe 5, an end surface of the first magnetic ring 6, which is far away from the second magnetic ring 7 (for example, a left end surface of the first magnetic ring 6 shown in fig. 1), is in contact with an end surface of the first pole shoe 4, which is adjacent to the second pole shoe 5 (for example, a right end surface of the first pole shoe 4 shown in fig. 1), and an end surface of the second magnetic ring 7, which is far away from the first magnetic ring 6 (for example, a right end surface of the second magnetic ring 7 shown in fig. 1), is in contact with an end surface of the second pole shoe 5, which is adjacent to the first pole shoe 4 (.
Preferably, the first magnetic ring 6 and the second magnetic ring 7 are both permanent magnets, and the magnetic poles of the first magnetic ring 6 and the second magnetic ring 7 are arranged in the left-right direction, as shown in fig. 1, the N pole of the first magnetic ring 6 faces to the left, the S pole of the first magnetic ring 6 faces to the right, the S pole of the second magnetic ring 7 faces to the left, and the N pole of the second magnetic ring 7 faces to the right, it is understood that the orientation of the first magnetic ring 6 and the second magnetic ring 7 is not limited thereto, for example, the N pole of the first magnetic ring 6 may face to the right, the S pole of the first magnetic ring 6 faces to the left, the S pole of the second magnetic ring 7 faces to the right, and the N pole of the second magnetic ring 7 faces to the left.
The pole shoe ring 8 is located between the first magnetic ring 6 and the second magnetic ring 7 in the axial direction of the first rotating shaft 2. One end face of the pole shoe ring 8 is in contact with the end face, adjacent to the second magnetic ring 7, of the first magnetic ring 6, the other end face of the pole shoe ring 8 is in contact with the end face, adjacent to the first magnetic ring 6, of the second magnetic ring 7, the pole shoe ring 8 is arranged around the gear pair, and magnetic liquid is filled between the inner circumferential faces of the gear pair and the pole shoe ring 8. As shown in fig. 1, the left end surface of the pole shoe ring 8 is in contact with the right end surface of the first magnetic ring 6, and the right end surface of the pole shoe ring 8 is in contact with the left end surface of the second magnetic ring 7.
According to the magnetic liquid seal lubrication transmission device provided by the embodiment of the invention, the magnetic liquid between the pole shoe and the rotating shaft can prevent external impurities from entering, the running stability of the transmission device is improved, the magnetic liquid cannot float around under the action of magnetic field force in a weightless environment, the failure of magnetic liquid seal is avoided, in addition, the traditional lubricating oil lubrication is replaced by the magnetic liquid lubrication, the abrasion between gear pairs can be reduced, the transmission stability is improved, and the apparent viscosity of the magnetic liquid can be improved by an external magnetic field, so that the oil film bearing capacity is improved. In addition, the magnetic liquid sealing and lubricating device provided by the embodiment of the invention has the advantages that the pole shoe ring arranged between the first magnetic ring and the second magnetic ring enables the magnetic liquid to be in a designated area under the action of a magnetic field, the lubrication is reliable, the running stability of the device is improved, the consumption of the magnetic liquid is small, the magnetic liquid sealing and the lubrication share the same magnetic circuit, the sealing and the lubrication of the same magnetic circuit are realized, the volume is saved, and the weight is reduced.
In some embodiments, the first axis of rotation and the second axis of rotation are arranged in parallel. As shown in fig. 1, the first rotating shaft 2 and the second rotating shaft 3 are horizontally inserted into the housing 1 along the left-right direction, and the first rotating shaft 2 and the second rotating shaft 3 are arranged at intervals in the up-down direction.
In some embodiments, the first pole piece 4 has a first through hole 403 and a second through hole 404, and the first through hole 403 and the second through hole 404 extend in the axial direction of the first rotating shaft 2. The second pole piece 5 has a third through hole 503 and a fourth through hole 504, and the third through hole 503 and the fourth through hole 504 extend in the axial direction of the first rotating shaft 2. The first rotating shaft 2 is arranged on the first pole piece 4 and the second pole piece 5 through the first through hole 403 and the third through hole 503, and the second rotating shaft 3 is arranged on the first pole piece 4 and the second pole piece 5 through the second through hole 404 and the fourth through hole 504.
As shown in fig. 1, the first through hole 403 and the second through hole 404 are arranged on the first pole piece 4 at an interval in the vertical direction, the third through hole 503 and the fourth through hole 504 are arranged on the second pole piece 5 at an interval in the vertical direction, the axes of the first through hole 403 and the third through hole 503 are overlapped, the axes of the second through hole 404 and the fourth through hole 504 are overlapped, the first rotating shaft 2 horizontally penetrates through the first through hole 403 and the third through hole 503 in the left-right direction, and the second rotating shaft 3 horizontally penetrates through the second through hole 404 and the fourth through hole 504 in the left-right direction.
The inner peripheral surface of the first through hole 403 is provided with a plurality of first pole teeth 401, the plurality of first pole teeth 401 are arranged at intervals in the axial direction of the first rotating shaft 2, magnetic liquid is filled between the inner surface of the plurality of first pole teeth 401 and the outer surface of the first rotating shaft 2, the inner peripheral surface of the second through hole 404 is provided with a plurality of third pole teeth 402, the plurality of third pole teeth 402 are arranged at intervals in the axial direction of the first rotating shaft 2, and magnetic liquid is filled between the inner surface of the plurality of third pole teeth 402 and the outer surface of the second rotating shaft 3.
The inner peripheral surface of the third through hole 503 is provided with a plurality of second pole teeth 501, the plurality of second pole teeth 501 are arranged at intervals in the axial direction of the first rotating shaft 2, and magnetic liquid is filled between the inner surface of the plurality of second pole teeth 501 and the outer surface of the first rotating shaft 2. An inner peripheral surface of the fourth through hole 504 is provided with a plurality of fourth pole teeth 502, the plurality of fourth pole teeth 502 are arranged at intervals in the axial direction of the first rotating shaft 2, and a magnetic liquid is filled between an inner surface of the plurality of fourth pole teeth 502 and an outer surface of the second rotating shaft 3.
By respectively arranging the plurality of first pole teeth 401, the plurality of second pole teeth 501, the plurality of third pole teeth 402 and the plurality of fourth pole teeth 502 on the inner circumferential surfaces of the first through hole 403, the second through hole 404, the third through hole 503 and the fourth through hole 504, magnetic liquid seals are formed between the first pole shoe 4 and the first rotating shaft 2, between the first pole shoe 4 and the second rotating shaft 3, between the second pole shoe 5 and the first rotating shaft 2 and between the second pole shoe 5 and the second rotating shaft 3, and leakage of magnetic liquid is avoided.
In some embodiments, the gear pair includes a first gear 11 and a second gear 12, the first gear 11 is sleeved on the first rotating shaft 2, the second gear 12 is sleeved on the second rotating shaft 3, the first gear 11 is engaged with the second gear 12, a magnetic liquid is filled between an outer circumference of the first gear 11 and an inner circumferential surface of the pole shoe ring 8, and a magnetic liquid is filled between an outer circumference of the second gear 12 and the inner circumferential surface of the pole shoe ring 8. Both sealing and lubrication of the first gear 11 and the second gear 12 by the magnetic fluid are achieved.
In some embodiments, the pole piece ring 8 includes a base ring 801 and a protrusion 802, an outer circumferential surface of the base ring 801 is in contact with an inner surface of the housing 1, the protrusion 802 is provided on an inner circumferential surface of the base ring 801, the protrusion 802 protrudes in a direction away from the base ring 801, and magnetic liquid is filled between the protrusion 802 and an outer circumference of the first gear 11 and between the protrusion 802 and an outer circumference of the second gear 12. As shown in fig. 1, the outer periphery of the first gear 11 faces the boss 802, the outer periphery of the second gear 12 faces the boss 802, and the magnetic liquid can be adsorbed to the boss 802 with the strongest magnetic field, so as to ensure continuous lubrication of the first gear 11 and the second gear 12 by the magnetic liquid.
In some embodiments, the inner circumferential surface of the first magnetic ring 6, the inner circumferential surface of the second magnetic ring 7, and the inner circumferential surface of the base ring 801 are aligned in the axial direction of the rotating shaft.
In some embodiments, base ring 801 and boss 802 are integrally formed. Therefore, the magnetic liquid seal lubrication transmission device according to the embodiment of the invention can prevent the magnetic liquid from flowing out due to the magnetic liquid entering the gap between the base ring 801 and the boss 802, and therefore, the base ring 801 and the boss 802 are integrally formed.
The first rotating shaft 2 is arranged on a first magnetism isolating ring 9 and a second magnetism isolating ring 10 in a penetrating mode, the second rotating shaft 3 is arranged on the first magnetism isolating ring 9 and the second magnetism isolating ring 10 in a penetrating mode, the outer peripheral face of the first magnetism isolating ring 9 is in contact with the inner peripheral face of the first magnetic ring 6, and the end face (the left end face of the first magnetism isolating ring 9 shown in the figure 1) of the first magnetism isolating ring 9 far away from the second magnetism isolating ring 10 is in contact with the end face (the right end face of the first pole shoe 4 shown in the figure 1) of the first pole shoe 4 close to the second pole shoe 5. The outer peripheral surface of the second magnetism isolating ring 10 is in contact with the inner peripheral surface of the second magnetism isolating ring 7, and the end surface (the right end surface of the second magnetism isolating ring 10 shown in fig. 1) of the second magnetism isolating ring 10 far away from the first magnetism isolating ring 9 is in contact with the end surface (the left end surface of the second pole shoe 5 shown in fig. 1) of the second pole shoe 5 close to the first pole shoe 4.
In the magnetic liquid seal lubrication transmission device of the embodiment of the invention, the inner peripheral surface of the first magnetic ring 6, the inner peripheral surface of the second magnetic ring 7 and the inner peripheral surface of the base ring 801 are aligned in the axial direction of the rotating shaft, and the first magnetism isolating ring 9 and the second magnetism isolating ring 10 are arranged, the first magnetic ring 6 is sleeved on the first magnetism isolating ring 9, the second magnetic ring 7 is sleeved on the second magnetism isolating ring 10, so that the magnetic liquid can be prevented from being adsorbed on the first magnetic ring 6 and the second magnetic ring 7.
As shown in a magnetic loop 13 in fig. 1, magnetic lines of force generated by the first magnetic ring 6 sequentially pass through the first pole shoe 4, the magnetic liquid, the first rotating shaft 2, the first gear 11 and the pole shoe ring 8 and then return to the first magnetic ring 6, or magnetic lines of force generated by the first magnetic ring 6 sequentially pass through the first pole shoe 4, the magnetic liquid, the second rotating shaft 3, the second gear 12 and the pole shoe ring 8 and then return to the first magnetic ring 6. Magnetic lines of force generated by the second magnetic ring 7 sequentially pass through the second pole shoe 5, the magnetic liquid, the first rotating shaft 2, the first gear 11 and the pole shoe ring 8 and then return to the second magnetic ring 7, or magnetic lines of force generated by the second magnetic ring 7 sequentially pass through the second pole shoe 5, the magnetic liquid, the second rotating shaft 3, the second gear 12 and the pole shoe ring 8 and then return to the second magnetic ring 7.
The first magnetism isolating ring 9 and the second magnetism isolating ring 10 ensure that the magnetic liquid is adsorbed in the designated area under the action of the magnetic field. The first magnetism isolating ring 9 and the second magnetism isolating ring 10 can also prevent magnetic liquid for sealing and lubricating from being adsorbed by the magnetism isolating rings, thereby improving the reliability of the device and prolonging the service life, wherein the designated areas are the area between the first pole shoe 4 and the first rotating shaft 2, the area between the first pole shoe 4 and the second rotating shaft 3, the area between the second pole shoe 5 and the first rotating shaft 2, the area between the second pole shoe 5 and the second rotating shaft 3, the area between the first gear 11 and the boss 802 and the area between the second gear 12 and the boss 802.
In some embodiments, the first magnetism isolating ring 9 has a predetermined gap with the first rotating shaft 2 in a radial direction (up and down direction as shown in fig. 1) of the first rotating shaft 2, the first magnetism isolating ring 9 has a predetermined gap with the second rotating shaft 3 in the radial direction of the second rotating shaft 3, the second magnetism isolating ring 10 has a predetermined gap with the first rotating shaft 2 in the radial direction of the first rotating shaft 2, and the second magnetism isolating ring 10 has a predetermined gap with the second rotating shaft 3 in the radial direction of the second rotating shaft 3.
According to the magnetic liquid sealing lubrication transmission device provided by the embodiment of the invention, the preset gaps are arranged between the first magnetism isolating ring 9 and the first rotating shaft 2, between the first magnetism isolating ring 9 and the second rotating shaft 3, between the second magnetism isolating ring 10 and the first rotating shaft 2 and between the second magnetism isolating ring 10 and the second rotating shaft 3, so that the friction between the rotating shaft and the magnetism isolating rings is reduced, the service life of the magnetic liquid sealing lubrication transmission device is prolonged, and the running stability of the device is improved.
In some embodiments, the size of the first magnetism isolating ring 9 in the axial direction of the first rotating shaft 2 is equal to the size of the first magnetism isolating ring 6 in the axial direction of the first rotating shaft 2, and the size of the second magnetism isolating ring 10 in the axial direction of the first rotating shaft 2 is equal to the size of the second magnetism isolating ring 7 in the axial direction of the first rotating shaft 2. As shown in fig. 1, the first magnetic ring 6 is wrapped inside the first pole shoe 4, the pole shoe ring 8 and the first magnetism isolating ring 9, so as to avoid magnetic lines of force of the permanent magnet from diverging, enable the magnetic liquid to stay in a designated area under the action of a magnetic field, reduce the loss of the magnetic liquid and improve the stability of the device in operation.
The magnetic fluid seal lubrication transmission according to some specific examples of the present invention will be described with reference to fig. 1 and 2.
The magnetic liquid sealing and lubricating transmission device comprises a shell 1, a first rotating shaft 2, a second rotating shaft 3, a first pole shoe 4, a second pole shoe 5, a first magnetic ring 6, a second magnetic ring 7, a pole shoe ring 8, a first magnetism isolating ring 9 and a second magnetism isolating ring 10.
Casing 1 is inside to have the cavity, and first pivot 2 and second pivot 3 are all worn to establish in casing 1 and interval arrangement, and first pivot 2 and second pivot 3 are all worn to establish in casing 1 along the left right direction level, and first pivot 2 and second pivot 3 interval arrangement in the upper and lower direction, and both ends all are located casing 1's outside about first pivot 2 and second pivot 3, transmit power through the gear pair between first pivot 2 and the second pivot 3.
The gear pair comprises a first gear 11 and a second gear 12, the first gear 11 is sleeved on the first rotating shaft 2, the second gear 12 is sleeved on the second rotating shaft 3, and the first gear 11 is meshed with the second gear 12.
The first pole shoe 4 and the second pole shoe 5 are both arranged in the cavity, the first pole shoe 4 and the second pole shoe 5 are arranged at intervals in the left-right direction, the first rotating shaft 2 penetrates through the first pole shoe 4 and the second pole shoe 5, magnetic liquid is filled between the first pole shoe 4 and the first rotating shaft 2 and between the first pole shoe 4 and the second rotating shaft 3, the second rotating shaft 3 penetrates through the first pole shoe 4 and the second pole shoe 5, and magnetic liquid is filled between the second pole shoe 5 and the first rotating shaft 2 and between the second pole shoe 5 and the second rotating shaft 3.
The first pole piece 4 has a first through hole 403 and a second through hole 404, and the first through hole 403 and the second through hole 404 extend in the left-right direction. The second pole piece 5 has a third through hole 503 and a fourth through hole 504, and the third through hole 503 and the fourth through hole 504 extend in the left-right direction. The first rotating shaft 2 is arranged on the first pole piece 4 and the second pole piece 5 through the first through hole 403 and the third through hole 503, and the second rotating shaft 3 is arranged on the first pole piece 4 and the second pole piece 5 through the second through hole 404 and the fourth through hole 504.
The inner circumferential surface of the first through hole 403 is provided with a plurality of first pole teeth 401, the plurality of first pole teeth 401 are arranged at intervals in the left-right direction, and magnetic liquid is filled between the inner surfaces of the plurality of first pole teeth 401 and the outer surface of the first rotating shaft 2, the inner circumferential surface of the second through hole 404 is provided with a plurality of third pole teeth 402, the plurality of third pole teeth 402 are arranged at intervals in the left-right direction, and magnetic liquid is filled between the inner surfaces of the plurality of third pole teeth 402 and the outer surface of the second rotating shaft 3.
The inner peripheral surface of the third through hole 503 is provided with a plurality of second pole teeth 501, the plurality of second pole teeth 501 are arranged at intervals in the left-right direction, magnetic liquid is filled between the inner surface of the plurality of second pole teeth 501 and the outer surface of the first rotating shaft 2, the inner peripheral surface of the fourth through hole 504 is provided with a plurality of fourth pole teeth 502, the plurality of fourth pole teeth 502 are arranged at intervals in the left-right direction, and magnetic liquid is filled between the inner surface of the plurality of fourth pole teeth 502 and the outer surface of the second rotating shaft 3.
The first magnetic ring 6 and the second magnetic ring 7 are positioned between the first pole shoe 4 and the second pole shoe 5 in the left-right direction, the first magnetic ring 6 is arranged around the first rotating shaft 2 and the second rotating shaft 3, the second magnetic ring 7 is arranged around the first rotating shaft 2 and the second rotating shaft 3, the first magnetic ring 6 and the second magnetic ring 7 are arranged at intervals in the left-right direction and are positioned between the first pole shoe 4 and the second pole shoe 5, the left end face of the first magnetic ring 6 is in contact with the right end face of the first pole shoe 4, and the right end face of the second magnetic ring 7 is in contact with the left end face of the second pole shoe 5.
The pole shoe ring 8 is located between the first magnetic ring 6 and the second magnetic ring 7 in the left-right direction. The left end face of the pole shoe ring 8 is in contact with the right end face of the first magnetic ring 6, the right end face of the pole shoe ring 8 is in contact with the left end face of the second magnetic ring 7, the pole shoe ring 8 is arranged around the gear pair, magnetic liquid is filled between the outer periphery of the first gear 11 and the inner circumferential surface of the pole shoe ring 8, and magnetic liquid is filled between the outer periphery of the second gear 12 and the inner circumferential surface of the pole shoe ring 8.
The pole shoe ring 8 includes a base ring 801 and a boss portion 802, the base ring 801 and the boss portion 802 are integrally formed, an outer peripheral surface of the base ring 801 is in contact with an inner surface of the housing 1, the boss portion 802 is provided on an inner peripheral surface of the base ring 801, the boss portion 802 is protruded in a direction away from the base ring 801, and magnetic liquid is filled between the boss portion 802 and an outer periphery of the first gear 11 and between the boss portion 802 and an outer periphery of the second gear 12.
The first rotating shaft 2 is arranged on a first magnetism isolating ring 9 and a second magnetism isolating ring 10 in a penetrating mode, the second rotating shaft 3 is arranged on the first magnetism isolating ring 9 and the second magnetism isolating ring 10 in a penetrating mode, the outer peripheral face of the first magnetism isolating ring 9 is in contact with the inner peripheral face of the first magnetic ring 6, the left end face of the first magnetism isolating ring 9 is in contact with the right end face of the first pole shoe 4, the outer peripheral face of the second magnetism isolating ring 10 is in contact with the inner peripheral face of the second magnetic ring 7, the right end face of the second magnetism isolating ring 10 is in contact with the left end face of the second pole shoe 5, the size of the first magnetism isolating ring 9 in the left-right direction is equal to the size of the first magnetic ring 6 in the left-right direction, and the size of the second magnetism isolating ring 10 in.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A magnetic fluid sealed lubricated transmission, comprising:
a housing having a cavity therein;
the first rotating shaft and the second rotating shaft are arranged in the shell in a penetrating mode and are arranged at intervals, and power is transmitted between the first rotating shaft and the second rotating shaft through a gear pair;
the first pole shoe and the second pole shoe are arranged in the cavity, the first pole shoe and the second pole shoe are arranged at intervals in the axial direction of the first rotating shaft, the first rotating shaft penetrates through the first pole shoe and the second pole shoe, magnetic liquid is filled between the first pole shoe and the first rotating shaft and between the first pole shoe and the second rotating shaft, the second rotating shaft penetrates through the first pole shoe and the second pole shoe, and magnetic liquid is filled between the second pole shoe and the first rotating shaft and between the second pole shoe and the second rotating shaft;
a first magnetic ring and a second magnetic ring, which are located between the first pole shoe and the second pole shoe in the axial direction of the first rotating shaft, the first magnetic ring is disposed around the first rotating shaft and the second rotating shaft, the second magnetic ring is disposed around the first rotating shaft and the second rotating shaft, the first magnetic ring and the second magnetic ring are arranged at intervals in the axial direction of the first rotating shaft and are located between the first pole shoe and the second pole shoe, the end surface of the first magnetic ring, which is far away from the second magnetic ring, is in contact with the end surface of the first pole shoe, which is close to the second pole shoe, and the end surface of the second magnetic ring, which is far away from the first magnetic ring, is in contact with the end surface of the second pole shoe, which is close to the first pole shoe;
the pole shoe ring is located between the first magnetic ring and the second magnetic ring in the axial direction of the first rotating shaft, one end face of the pole shoe ring is in contact with the end face, adjacent to the second magnetic ring, of the first magnetic ring, the other end face of the pole shoe ring is in contact with the end face, adjacent to the first magnetic ring, of the second magnetic ring, the pole shoe ring is arranged around the gear pair, and magnetic liquid is filled between the gear pair and the inner circumferential surface of the pole shoe ring.
2. The magnetic fluid seal lubricated transmission according to claim 1, wherein said first rotating shaft and said second rotating shaft are disposed in parallel.
3. The magnetic fluid sealing and lubricating transmission device according to claim 1, wherein the first pole piece has a first through hole and a second through hole extending in an axial direction of the first rotating shaft, the second pole piece has a third through hole and a fourth through hole extending in the axial direction of the first rotating shaft, the first rotating shaft is inserted into the first pole piece and the second pole piece through the first through hole and the third through hole, the second rotating shaft is inserted into the first pole piece and the second pole piece through the second through hole and the fourth through hole,
the inner peripheral surface of the first through hole is provided with a plurality of first pole teeth which are arranged at intervals in the axial direction of the first rotating shaft, magnetic liquid is filled between the inner surface of the first pole teeth and the outer surface of the first rotating shaft, the inner peripheral surface of the second through hole is provided with a plurality of third pole teeth which are arranged at intervals in the axial direction of the first rotating shaft, and magnetic liquid is filled between the inner surface of the third pole teeth and the outer surface of the second rotating shaft,
the inner peripheral surface of the third through hole is provided with a plurality of second pole teeth, the second pole teeth are arranged in the axial direction of the first rotating shaft at intervals, magnetic liquid is filled between the inner surfaces of the second pole teeth and the outer surface of the first rotating shaft, the inner peripheral surface of the fourth through hole is provided with a plurality of fourth pole teeth, the fourth pole teeth are arranged in the axial direction of the first rotating shaft at intervals, and magnetic liquid is filled between the inner surfaces of the fourth pole teeth and the outer surface of the second rotating shaft.
4. The magnetic fluid seal lubrication transmission device according to claim 1, wherein the gear pair comprises a first gear and a second gear, the first gear is sleeved on the first rotating shaft, the second gear is sleeved on the second rotating shaft, the first gear is meshed with the second gear, a magnetic fluid is filled between the outer periphery of the first gear and the inner circumferential surface of the pole shoe ring, and a magnetic fluid is filled between the outer periphery of the second gear and the inner circumferential surface of the pole shoe ring.
5. The magnetic fluid sealed lubricated transmission according to claim 4, wherein said pole piece ring comprises a base ring and a protrusion, an outer peripheral surface of said base ring is in contact with an inner surface of said housing, said protrusion is provided on an inner peripheral surface of said base ring, said protrusion protrudes in a direction away from said base ring, and magnetic fluid is filled between said protrusion and an outer periphery of said first gear and between said protrusion and an outer periphery of said second gear.
6. The magnetic fluid seal lubrication drive of claim 5, wherein an inner peripheral surface of said first magnetic ring, an inner peripheral surface of said second magnetic ring and an inner peripheral surface of said base ring are aligned in an axial direction of said shaft.
7. The magnetic fluid seal lubricated transmission according to claim 5, wherein said base ring and said boss are integrally formed.
8. The magnetic fluid sealing and lubricating transmission device as claimed in any one of claims 1 to 7, further comprising a first magnetism isolating ring and a second magnetism isolating ring, wherein the first rotating shaft is disposed through the first magnetism isolating ring and the second magnetism isolating ring, the second rotating shaft is disposed through the first magnetism isolating ring and the second magnetism isolating ring, an outer peripheral surface of the first magnetism isolating ring is in contact with an inner peripheral surface of the first magnetism isolating ring, an end surface of the first magnetism isolating ring, which is far away from the second magnetism isolating ring, is in contact with an end surface of the first pole shoe, which is near to the second pole shoe, an outer peripheral surface of the second magnetism isolating ring is in contact with an inner peripheral surface of the second magnetism isolating ring, and an end surface of the second magnetism isolating ring, which is far away from the first magnetism isolating ring, is in contact with an end surface of the second pole shoe, which is near to the first pole shoe.
9. The magnetic fluid seal lubrication transmission device as claimed in any one of claim 8, wherein a predetermined gap is provided between said first magnetism isolating ring and said first rotating shaft in a radial direction of said first rotating shaft, a predetermined gap is provided between said first magnetism isolating ring and said second rotating shaft in a radial direction of said second rotating shaft, a predetermined gap is provided between said second magnetism isolating ring and said first rotating shaft in a radial direction of said first rotating shaft, and a predetermined gap is provided between said second magnetism isolating ring and said second rotating shaft in a radial direction of said second rotating shaft.
10. The magnetic fluid seal lubrication transmission device as recited in claim 8, wherein a dimension of said first magnetism isolating ring in an axial direction of said first rotation shaft is equal to a dimension of said first magnetism isolating ring in an axial direction of said first rotation shaft, and a dimension of said second magnetism isolating ring in an axial direction of said first rotation shaft is equal to a dimension of said second magnetism isolating ring in an axial direction of said first rotation shaft.
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| CN202011057001.1A CN112283325B (en) | 2020-09-29 | 2020-09-29 | Magnetic liquid sealed lubricating transmission device |
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| CN202011057001.1A CN112283325B (en) | 2020-09-29 | 2020-09-29 | Magnetic liquid sealed lubricating transmission device |
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| CN112283325B CN112283325B (en) | 2021-09-14 |
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Cited By (1)
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| CN113218549A (en) * | 2021-04-16 | 2021-08-06 | 清华大学 | Magnetic fluid sealing torque measuring device, measuring system and measuring method |
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| CN112283325B (en) | 2021-09-14 |
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