CN115199691A - Large-inertance-to-mass-ratio inerter based on coaxial magnetic gear - Google Patents
Large-inertance-to-mass-ratio inerter based on coaxial magnetic gear Download PDFInfo
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- CN115199691A CN115199691A CN202210973784.0A CN202210973784A CN115199691A CN 115199691 A CN115199691 A CN 115199691A CN 202210973784 A CN202210973784 A CN 202210973784A CN 115199691 A CN115199691 A CN 115199691A
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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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/10—Vibration-dampers; Shock-absorbers using inertia effect
- F16F7/1022—Vibration-dampers; Shock-absorbers using inertia effect the linear oscillation movement being converted into a rotational movement of the inertia member, e.g. using a pivoted mass
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D41/00—Freewheels or freewheel clutches
- F16D41/12—Freewheels or freewheel clutches with hinged pawl co-operating with teeth, cogs, or the like
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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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/30—Flywheels
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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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/30—Flywheels
- F16F15/315—Flywheels characterised by their supporting arrangement, e.g. mountings, cages, securing inertia member to shaft
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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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/10—Vibration-dampers; Shock-absorbers using inertia effect
- F16F7/1028—Vibration-dampers; Shock-absorbers using inertia effect the inertia-producing means being a constituent part of the system which is to be damped
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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
- F16H49/00—Other gearings
- F16H49/005—Magnetic gearings with physical contact between gears
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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
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H2025/2046—Screw mechanisms with gears arranged perpendicular to screw shaft axis, e.g. helical gears engaging tangentially the screw shaft
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Abstract
The invention discloses a large inerter-inertial container based on a coaxial magnetic gear, which comprises: a motion conversion mechanism for converting linear motion into rotary motion; the inertial volume mechanism is in transmission connection with an output shaft of the motion conversion mechanism so as to output inertial mass; the inertial volume mechanism comprises an even number of inertial volume units which are annularly and uniformly distributed, and the inertial volume units are divided into two groups with the same number; the inertia capacity unit comprises a flywheel, a first input shaft and a second input shaft, a ratchet mechanism is arranged between the first input shaft and the second input shaft for transmission connection, and a coaxial magnetic gear is arranged between the second input shaft and the flywheel for transmission connection; the first input shafts of the two inertial container units are in transmission connection with the output shaft of the motion conversion mechanism, the ratchet mechanisms of the inertial container units belonging to the same group have the same transmission direction, and the ratchet mechanisms of the two groups of inertial container units respectively have opposite transmission directions.
Description
Technical Field
The invention relates to an inertial container, in particular to a large inertial mass ratio inertial container based on a coaxial magnetic gear.
Background
The inertial container mainly realizes the inertia characteristic by changing the motion mode, namely, different acceleration is generated between two end points by changing the motion mode, and then inertia is generated. The mode of changing the movement mainly comprises the following steps: the implementation modes of the inerter mainly include three types, namely, axial movement-rotary movement, speed change (flow rate of liquid), and current change (voltage): mechanical, liquid, electromagnetic. After decades of development, the inerter is widely applied to the field of seismic isolation and reduction, and is an important development direction for research of the inerter.
Researches show that the inerter can obviously improve the performance of a control system, and the improvement degree is related to the inertial mass of the inerter. In order to improve the inertial mass of the inerter, the electromagnetic inerter generally improves the inertial mass through current, and although semi-active control can realize a large inerter ratio, the device has poor reliability and applicability because external energy needs to be input. In order to solve the problems, in the prior art, the transmission ratio of the mechanical inerter is improved through a speed reducer and a planetary gear, and the reliability and the applicability of the improved inerter are greatly improved. However, in both the speed reducer and the planetary gear, the working mechanism of the speed reducer and the planetary gear is the engagement of a plurality of gears, and although the inertia mass of the inertia container is obviously improved, the problem that the friction force of the inertia container is large due to the engagement of a plurality of gears is brought along, not only the transmission efficiency is influenced, but also the nonlinearity caused by the friction is more obvious. In addition, most of the mechanical inerter is provided with inertial mass by a single flywheel, so that the inerter needs to change the direction when the movement direction of the inerter is changed due to the flywheel rotating at high speed, so that the output of the inertial mass is not smooth, and the working efficiency of the inerter is reduced.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a large inertance ratio inertance vessel based on a coaxial magnetic gear, which can not only achieve a large inertance ratio, but also eliminate the problems of reduction in transmission efficiency and nonlinearity due to transmission friction, and can output an inertance mass smoothly even when the direction is changed.
In order to achieve the purpose, the invention provides the following technical scheme:
a coaxial magnetic gear based large inerter-to-inertial container comprising:
a motion conversion mechanism for converting linear motion into rotary motion;
the inertial volume mechanism is in transmission connection with an output shaft of the motion conversion mechanism so as to output inertial mass;
the inertial volume mechanism comprises an even number of inertial volume units which are annularly and uniformly distributed, and the inertial volume units are divided into two groups with the same number; the inertia capacity unit comprises a flywheel, a first input shaft and a second input shaft, a ratchet mechanism is arranged between the first input shaft and the second input shaft for transmission connection, and a coaxial magnetic gear is arranged between the second input shaft and the flywheel for transmission connection;
the first input shafts of the two inertial container units are in transmission connection with the output shaft of the motion conversion mechanism, the ratchet mechanisms of the inertial container units belonging to the same group have the same transmission direction, and the ratchet mechanisms of the two groups of inertial container units respectively have opposite transmission directions.
Further, the motion conversion mechanism comprises a lead screw, a nut matched with the lead screw and a guide mechanism used for guiding the lead screw, and a ball is arranged between the lead screw and the nut;
the nut is driven to move along the axial direction of the lead screw so as to convert the linear motion of the nut into the rotary motion of the lead screw.
Further, the conversion input mechanism comprises an input shaft and a stroke chamber which moves synchronously with the input shaft, and the stroke chamber is fixedly connected with the nut.
Further, the screw rod is used as an output shaft of the motion conversion mechanism, or the output shaft of the motion conversion mechanism is in transmission connection with the screw rod; an output bevel gear rotating synchronously with the motion conversion mechanism is arranged on an output shaft of the motion conversion mechanism, and an input bevel gear meshed with the output bevel gear is arranged on the first input shaft of the inertial container unit.
Further, the axes of the output bevel gear and the output bevel gear are perpendicular to each other.
Further, the ratchet mechanism comprises a pawl which is installed on the first input shaft in a rotating fit mode and a ratchet which is arranged on the second input shaft and matched with the pawl, and an elastic element which enables the pawl to be meshed with the ratchet is arranged on the first input shaft; or, the pawl and the ratchet wheel are both made of magnetic materials.
Further, the coaxial magnetic gear comprises a low-speed rotor assembly and a high-speed rotor assembly, and a magnetism regulating stator is arranged between the low-speed rotor assembly and the high-speed rotor assembly;
the low-speed rotor assembly and the second input shaft rotate synchronously; the high-speed rotor assembly and the rotating shaft of the flywheel rotate synchronously.
Further, low-speed rotor subassembly includes low-speed rotor magnetizer and low-speed rotor permanent magnet, low-speed rotor permanent magnet annular equipartition sets up in the inner wall of low-speed rotor magnetizer, low-speed rotor magnetizer with second input shaft fixed connection.
Further, high-speed rotor subassembly includes high-speed rotor magnetizer and high-speed rotor permanent magnet, high-speed rotor permanent magnet annular equipartition sets up in the outer wall of high-speed rotor magnetizer, high-speed rotor magnetizer with the pivot fixed connection of flywheel.
Furthermore, the number of the high-speed rotor permanent magnets is smaller than that of the low-speed rotor permanent magnets, the number of the high-speed rotor permanent magnets and the number of the low-speed rotor permanent magnets are even, magnet adjusting core blocks are arranged in the magnet adjusting stator, and the number of the magnet adjusting core blocks is equal to the sum of the number of the high-speed rotor permanent magnets and the number of the low-speed rotor permanent magnets.
The invention has the beneficial effects that:
according to the large inerter-to-mass ratio inerter based on the coaxial magnetic gear, linear motion is converted into rotary motion through the motion conversion mechanism, so that a flywheel can be driven to rotate to output inerter mass; the inertial container units are arranged into two groups, the two groups of inertial container units are equal in number, and the transmission directions of the ratchet mechanisms of the two groups of inertial container units are opposite, so that when the output shaft of the motion conversion mechanism rotates towards different directions, the flywheel of the corresponding group of inertial container units can be driven to rotate, and the problem of unsmooth inertial mass output caused by the change of the rotation direction of the output shaft of the motion conversion mechanism can be avoided; through set up coaxial magnetism gear between first input shaft and second input shaft, not only can increase the drive ratio between first input shaft and the second input shaft, can avoid the nonlinear problem that the effect of transmission friction leads to moreover, also reduced the volume simultaneously.
Drawings
In order to make the object, technical scheme and beneficial effect of the invention more clear, the invention provides the following drawings for explanation:
FIG. 1 is a schematic structural diagram of an embodiment of a large inerter-to-inertial container based on a coaxial magnetic gear according to the present invention;
FIG. 2 is a schematic structural view of a ratchet mechanism;
fig. 3 is a schematic structural view of a coaxial magnetic gear.
Description of the reference numerals:
1-a housing;
10-a motion conversion mechanism; 11-a lead screw; 12-a nut; 13-a ball; 14-an input shaft; 15-a stroke chamber; 16-an output bevel gear; 17-screw hole;
20-an inertial volume mechanism; 21-a flywheel; 211-a rotating shaft; 22-a first input shaft; 23-a second input shaft; 24-a ratchet mechanism; 241-pawl; 242-ratchet wheel; 243-pawl rotation shaft; 25-coaxial magnetic gear; 251-a magnetic modulating stator; 2511-adjusting magnet core block; 252-low speed rotor magnetizer; 253-low speed rotor permanent magnets; 254-high speed rotor magnetizer; 255-high speed rotor permanent magnet; 26-output bevel gear.
Detailed Description
The present invention is further described with reference to the following drawings and specific examples so that those skilled in the art can better understand the present invention and can practice the present invention, but the examples are not intended to limit the present invention.
Fig. 1 is a schematic structural diagram of an embodiment of a large inerter-to-inertial container based on a coaxial magnetic gear according to the present invention. This embodiment is based on coaxial magnetic gear's big inertial mass ratio is used container and is included shell 1, is equipped with in the shell 1:
a motion conversion mechanism 10 for converting a linear motion into a rotational motion;
and the inertial volume mechanism 20 is in transmission connection with the output shaft of the motion conversion mechanism 10 to output inertial mass.
The inerter mechanism 20 comprises even number of inerter units which are annularly and uniformly distributed, and the inerter units are divided into two groups with the same number. The inertial container unit of the embodiment comprises a flywheel 21, a first input shaft 22 and a second input shaft 23, wherein a ratchet mechanism 24 is arranged between the first input shaft 22 and the second input shaft 23 for transmission connection, and a coaxial magnetic gear 25 is arranged between the second input shaft 23 and the flywheel 21 for transmission connection. The first input shafts 22 of the two inertial container units are in transmission connection with the output shaft of the motion conversion mechanism 10, the ratchet mechanisms 24 of the inertial container units belonging to the same group have the same transmission direction, and the ratchet mechanisms 24 of the two groups of inertial container units respectively have opposite transmission directions. Thus, when the output shaft of the motion conversion mechanism 10 rotates towards one direction, only the flywheel 21 of one set of inertial volume units can be driven to rotate, when the rotation direction of the output shaft of the motion conversion mechanism 10 is changed, the flywheel 21 which rotates at a high speed before changing cannot be influenced, and meanwhile, the flywheel 21 of the other set of inertial volume units is driven to rotate, so that the problem of unsmooth inertial mass output caused by the change of the rotation direction of the output shaft of the motion conversion mechanism is avoided. In this embodiment, there are 2 inerter units, i.e. each set includes one inerter unit. Of course, in other embodiments, the number of the inerter units can also be set to 4, 6, 8, or more than 8, which will not be described again.
As shown in fig. 1, the motion conversion mechanism 10 of the present embodiment includes a screw shaft 11, a nut 12 engaged with the screw shaft 11, and a guide mechanism for guiding the screw shaft 11, and balls 13 are provided between the screw shaft 11 and the nut 12. The motion conversion mechanism 10 of the present embodiment further includes a conversion input mechanism for driving the nut 12 to move in the axial direction of the lead screw 11 to convert the linear motion of the nut 12 into the rotational motion of the lead screw 11. Specifically, the switching input mechanism of the present embodiment includes an input shaft 14 and a stroke chamber 15 that moves synchronously with the input shaft 14, and the stroke chamber 15 is fixedly connected to the nut 12. The guide mechanism of the present embodiment is provided in the housing 1. Specifically, in the present embodiment, the screw 11 is used as the output shaft of the motion conversion mechanism 10, the guide mechanism is a screw hole 17 disposed in the housing 1 and engaged with the screw 11, and a ball is disposed between the screw hole and the screw 11. Of course, in other embodiments, the output shaft of the motion conversion mechanism 10 may also be in transmission connection with the lead screw 11, that is, the output shaft may be an optical axis, a guide hole matching with the output shaft is provided in the housing 1, a bearing is installed in the guide hole, and a sliding sleeve sliding matching with the output shaft is provided in the bearing. The output shaft of the motion conversion mechanism 10 of this embodiment is provided with an output bevel gear 16 which rotates synchronously with the output shaft, and the first input shaft 22 of the inerter unit is provided with an input bevel gear 26 which is engaged with the output bevel gear 6, in this embodiment, the axes of the output bevel gear 16 and the output bevel gear 26 are perpendicular to each other.
As shown in fig. 2, the ratchet mechanism 24 of the present embodiment includes a pawl 241 rotatably fitted on the first input shaft 22 and a ratchet wheel 242 provided on the second input shaft 23 and fitted with the pawl 241, and the first input shaft 22 is provided with an elastic element for engaging the pawl 241 with the ratchet wheel 242; alternatively, the pawl 241 and the ratchet wheel 242 are made of magnetic material. The pawl 241 and the ratchet wheel 242 of the present embodiment are made of a magnetic material to reduce friction between the ratchet wheel 242 and the pawl 241. The pawl 241 of the present embodiment is mounted on the first input shaft 22 by a pawl rotation shaft 243, and the pawl 241 is rotatable relative to the pawl rotation shaft 243.
As shown in fig. 3, the coaxial magnetic gear 25 of the present embodiment includes a low-speed rotor assembly and a high-speed rotor assembly, and a magnetism regulating stator 251 is disposed between the low-speed rotor assembly and the high-speed rotor assembly. The low-speed rotor assembly rotates synchronously with the second input shaft 23; the high-speed rotor assembly rotates in synchronization with the rotation shaft 211 of the flywheel 21. The low-speed rotor assembly of this embodiment includes low-speed rotor magnetizer 252 and low-speed rotor permanent magnet 253, and low-speed rotor permanent magnet 253 annular equipartition sets up in the inner wall of low-speed rotor magnetizer 252, and low-speed rotor magnetizer 252 and second input shaft 23 fixed connection. The high-speed rotor assembly of the embodiment includes a high-speed rotor magnetizer 254 and high-speed rotor permanent magnets 255, the high-speed rotor permanent magnets 255 are annularly and uniformly distributed in the outer wall of the high-speed rotor magnetizer 254, and the high-speed rotor magnetizer 254 is fixedly connected with the rotating shaft 211 of the flywheel 21. In this embodiment, the number of the high-speed rotor permanent magnets 255 is smaller than that of the low-speed rotor permanent magnets 253, the number of the high-speed rotor permanent magnets 255 and that of the low-speed rotor permanent magnets 253 are both even, a magnetic adjusting iron core block 2511 is arranged in the magnetic adjusting stator 251, and the number of the magnetic adjusting iron core blocks 2511 is equal to the sum of the number of the high-speed rotor permanent magnets 255 and that of the low-speed rotor permanent magnets 253.
The principle of the large inerter-to-mass ratio inerter based on the coaxial magnetic gear in the embodiment is as follows:
when the input shaft 14 moves axially, the screw shaft 11 changes the linear motion into a rotational motion by the guide mechanism and the nuts 12 and balls 13, which in turn rotates the output bevel gears 16, drives each input bevel gear 26 engaged with the output bevel gears 16 to rotate, and rotates the first input shaft 22. Under the action of the ratchet mechanism 24, the first input shaft 22 of one set of inertial container units drives the second input shaft 23 to rotate, and the first input shaft 22 of the other set of inertial container units rotates but the second input shaft 23 does not rotate. The second input shaft 23 drives the low-speed rotor assembly of the coaxial magnetic gear 25 to rotate, and the high-speed rotor assembly is driven to rotate under the action of the low-speed rotor assembly, so that the flywheel 21 is driven to rotate at a high speed to output the inertial mass.
Principle of realization of the coaxial magnetic gear 25:
the coaxial magnetic gear 25 is mainly composed of three effective component groupsComprises the following steps: a low-speed rotor assembly, a high-speed rotor assembly, and a magnetism regulating stator 251. The inner surface of the low speed rotor magnet conductor 252 is affixed with permanent magnet poles to form a low speed rotor permanent magnet 253, and likewise, the outer surface of the high speed rotor magnet conductor 254 is affixed with permanent magnet poles to form a high speed rotor permanent magnet 255. Pole pair number N of high speed rotor assembly h Number of pole pairs N less than low speed rotor assembly l And N is h And N l The number of the two is even. The magnetic adjusting iron core blocks 2511 are uniformly distributed on the magnetic adjusting stator 251, and the number of the magnetic adjusting iron core blocks 2511 is equal to the sum of the magnetic pole pairs of the low-speed rotor permanent magnet 253 and the high-speed rotor permanent magnet 255. The low-speed rotor magnetizer 252, the high-speed rotor magnetizer 254 and the magnetism regulating stator 251 are all formed by laminating silicon steel sheets, the thickness of the silicon steel sheets is generally 0.5mm or less, and the silicon steel sheets are formed by laminating the silicon steel sheets along the axial direction. In operation, the magnetic flux adjusting stator 251 remains stationary, the low-speed rotor assembly and the high-speed rotor assembly rotate in opposite directions, and the transmission ratio is:
i 1 ＝N l /N h
because the traditional inerter needs a plurality of gears to be meshed with each other if a large inertia coefficient is needed. The mutual engagement of a plurality of gears causes a large friction force to exist in the whole gear system, which not only affects the transmission efficiency, but also causes significant nonlinearity due to friction. In addition, the multiple gears take up a large space and are complicated in construction. And the coaxial magnetic gears replace a plurality of gears for meshing, and under the condition that the transmission ratio is not changed, the low-speed rotor assembly and the high-speed rotor assembly cannot be contacted due to the coupling of the permanent magnetic poles, so that the friction force caused by the meshing of the gears is further solved.
Furthermore, due to the meshing between the output bevel gear 16 and the input bevel gear 26, the transmission ratio is:
i 2 ＝Z in /Z out
in the formula: z in The number of teeth of the output bevel gear 16; z out The number of teeth of the input bevel gear 26; and Z is in ＞Z out 。
Thus, the transmission ratio from the motion conversion mechanism 10 to the flywheel 21 of each inertial volume unit is:
i＝Z in ·N l /(Z out ·N h )
in this embodiment, the rotational angular velocity of the lead screw 11 is:
wherein L is the lead length of the lead screw 11;
the acceleration of the ball screw is indicated.
The rotational speed of the flywheel 21 is then:
ω 1 ＝i·ω
the drive torque of the spindle 11 is:
wherein α represents the angular acceleration of the ball screw; i represents the mass moment of inertia of the flywheel 21.
The axial force at the two ends of the screw 11 can be obtained as follows:
wherein b represents the inertial mass output by each inertial volume unit;
the obtained inertial mass output by each inertial volume unit is as follows:
the inertial mass output by the inertial volume units belonging to each group is as follows:
where N represents the number of inertance cells in each group.
As can be seen from the above, in the present embodiment, based on the engagement of the conical gear of the large inerter-to-inerter and the acceleration of the coaxial magnetic gear 25 of the coaxial magnetic gear, compared to the conventional ball screw inerter, the transmission ratio of the large inerter-to-inerter of the present embodiment is i · N times that of the conventional ball screw inerter, and compared to the conventional ball screw inerter, the inertial mass of the large inerter-to-inerter is i · N times that of the conventional ball screw inerter-to-inerter, and the engagement between multiple gears is avoided. In this example, Z in ＝30；Z out ＝30；N h ＝6；N l =36, the transmission ratio i =6.
In addition, because the conventional mechanical inerter can cause structural damage when the flywheel rotating at high speed changes direction suddenly when reciprocating, the large inerter-to-inertial-mass ratio inerter of the embodiment is provided with the ratchet mechanism 24 between the first input shaft 22 and the second input shaft 23, the transmission directions of the ratchet mechanisms 24 respectively belonging to the two groups of inerter units are opposite, when the lead screw 11 rotates towards one direction, only the flywheel 21 of one group of inerter units can be driven to rotate, when the rotation direction of the lead screw 11 changes, the flywheel 21 rotating at high speed before changing can not be influenced, and meanwhile, the flywheel 21 of the other group of inerter units is driven to rotate, so that the problem of unsmooth output of the inertial mass caused when the rotation direction of the lead screw 11 changes is avoided.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (10)
1. The utility model provides a big inertial mass ratio is used to container based on coaxial magnetic gear which characterized in that: the method comprises the following steps:
a motion conversion mechanism (10) for converting a linear motion into a rotary motion;
the inertial volume mechanism (20) is in transmission connection with an output shaft of the motion conversion mechanism (10) to output inertial mass;
the inerter mechanism (20) comprises an even number of inerter units which are uniformly distributed in an annular manner, and the inerter units are divided into two groups with the same number; the inertia capacity unit comprises a flywheel (21), a first input shaft (22) and a second input shaft (23), a ratchet mechanism (24) is arranged between the first input shaft (22) and the second input shaft (23) in transmission connection, and a coaxial magnetic gear (25) is arranged between the second input shaft (23) and the flywheel (21) in transmission connection;
the first input shafts (22) of the two inertial container units are in transmission connection with the output shaft of the motion conversion mechanism (10), the ratchet mechanisms (24) of the inertial container units belonging to the same group have the same transmission direction, and the ratchet mechanisms (24) of the two inertial container units respectively belong to the two groups have opposite transmission directions.
2. The coaxial magnetic gear-based large inerter-to-inertial container according to claim 1, wherein: the motion conversion mechanism (10) comprises a lead screw (11), a nut (12) matched with the lead screw (11) and a guide mechanism for guiding the lead screw (11), and a ball (13) is arranged between the lead screw (11) and the nut (12);
the screw driver further comprises a conversion input mechanism, wherein the conversion input mechanism is used for driving the nut (12) to move along the axial direction of the screw (11) so as to convert the linear motion of the nut (12) into the rotary motion of the screw (11).
3. The coaxial magnetic gear-based large inerter-to-inertial container according to claim 2, wherein: the conversion input mechanism comprises an input shaft (14) and a stroke chamber (15) which moves synchronously with the input shaft (14), and the stroke chamber (15) is fixedly connected with the nut (12).
4. The coaxial magnetic gear-based high inerter-inertial container according to claim 3, wherein: the lead screw (11) is used as an output shaft of the motion conversion mechanism (10), or the output shaft of the motion conversion mechanism (10) is in transmission connection with the lead screw (11); an output bevel gear (16) rotating synchronously with the motion conversion mechanism is arranged on an output shaft of the motion conversion mechanism (10), and an input bevel gear (26) meshed with the output bevel gear (6) is arranged on the first input shaft (22) of the inerter unit.
5. The coaxial magnetic gear-based large inerter-to-inertia vessel of claim 4, wherein: the axes of the output bevel gear (16) and the output bevel gear (26) are vertical to each other.
6. The inerter-inertial container with large inerter ratio based on the coaxial magnetic gear according to any one of claims 1 to 5, wherein: the ratchet mechanism (24) comprises a pawl (241) which is installed on the first input shaft (22) in a rotating fit mode and a ratchet wheel (242) which is arranged on the second input shaft (23) and is matched with the pawl (241); the first input shaft (22) is provided with an elastic element which enables the pawl (241) to be meshed with the ratchet wheel (242); or, the pawl (241) and the ratchet wheel (242) are both made of magnetic materials.
7. The inerter-inert container with large inerter ratio based on the coaxial magnetic gear according to any one of claims 1 to 5, wherein: the coaxial magnetic gear (25) comprises a low-speed rotor assembly and a high-speed rotor assembly, and a magnetism regulating stator (251) is arranged between the low-speed rotor assembly and the high-speed rotor assembly;
the low-speed rotor assembly rotates synchronously with the second input shaft (23); the high-speed rotor assembly rotates synchronously with a rotating shaft (211) of the flywheel (21).
8. The coaxial magnetic gear-based inerter-high inerter-to-inertia vessel of claim 7, wherein: the low-speed rotor subassembly includes low-speed rotor magnetizer (252) and low-speed rotor permanent magnet (253), low-speed rotor permanent magnet (253) annular equipartition sets up in the inner wall of low-speed rotor magnetizer (252), low-speed rotor magnetizer (252) with second input shaft (23) fixed connection.
9. The coaxial magnetic gear-based inerter-larger inerter vessel of claim 8, wherein: the high-speed rotor assembly comprises high-speed rotor magnetizers (254) and high-speed rotor permanent magnets (255), wherein the high-speed rotor permanent magnets (255) are annularly and uniformly distributed in the outer wall of the high-speed rotor magnetizers (254), and the high-speed rotor magnetizers (254) are fixedly connected with the rotating shaft (211) of the flywheel (21).
10. The coaxial magnetic gear-based inerter-high inerter-to-inertia vessel of claim 9, wherein: the number of the high-speed rotor permanent magnets (255) is smaller than that of the low-speed rotor permanent magnets (253), the number of the high-speed rotor permanent magnets (255) and the number of the low-speed rotor permanent magnets (253) are even, magnet adjusting core blocks (2511) are arranged in the magnet adjusting stator (251), and the number of the magnet adjusting core blocks (2511) is equal to the sum of the number of the high-speed rotor permanent magnets (255) and the number of the low-speed rotor permanent magnets (253).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115853945A (en) * | 2022-12-08 | 2023-03-28 | 湘潭大学 | Bidirectional inertia capacity adjustable shock absorber and control method |
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