CN115574046A - Tuning type torsion inertial volume damper - Google Patents
Tuning type torsion inertial volume damper Download PDFInfo
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- CN115574046A CN115574046A CN202211148846.0A CN202211148846A CN115574046A CN 115574046 A CN115574046 A CN 115574046A CN 202211148846 A CN202211148846 A CN 202211148846A CN 115574046 A CN115574046 A CN 115574046A
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- 238000007789 sealing Methods 0.000 claims abstract description 64
- 239000007788 liquid Substances 0.000 claims abstract description 30
- 230000005540 biological transmission Effects 0.000 claims abstract description 20
- 230000001154 acute effect Effects 0.000 claims description 3
- 238000013016 damping Methods 0.000 abstract description 12
- 238000010008 shearing Methods 0.000 abstract description 3
- 230000033001 locomotion Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000009467 reduction Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
- F16F15/121—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon using springs as elastic members, e.g. metallic springs
- F16F15/1216—Torsional springs, e.g. torsion bar or torsionally-loaded coil springs
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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
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/16—Suppression of vibrations in rotating systems by making use of members moving with the system using a fluid or pasty material
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- Aviation & Aerospace Engineering (AREA)
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- Mechanical Operated Clutches (AREA)
Abstract
The invention relates to the technical field of vibration control, and provides a tuned torsional inertial volume damper, which comprises: the device comprises a first connecting piece, a second connecting piece, a sealing shell, a flywheel, a first torsion spring, a second torsion spring and a lead screw transmission assembly; the sealed shell is rotationally connected with the first connecting piece, the flywheel is rotationally arranged in the sealed shell filled with viscous liquid, and the sealed shell is connected with the second connecting piece through the lead screw transmission assembly; a first ratchet wheel on the first end face of the flywheel is connected with the sealing shell through a first torsion spring; a second ratchet wheel on the second end surface of the flywheel is connected with the sealing shell through a second torsion spring; when the sealing shell rotates clockwise, the sealing shell drives the flywheel to rotate clockwise through the first torsion spring and the first ratchet wheel, and when the sealing shell rotates anticlockwise, the sealing shell drives the flywheel to rotate anticlockwise through the second torsion spring and the second ratchet wheel; the invention improves the vibration damping efficiency and reliability by the elasticity of the torsion spring and the shearing of the flywheel to viscous liquid.
Description
Technical Field
The invention relates to the technical field of vibration control, in particular to a tuned torsional inertial volume damper.
Background
The engineering structure can vibrate under the action of dynamic loads such as wind, waves and earthquakes, and the excessive vibration response can cause human body discomfort, component fatigue failure and even structural damage.
At present, common dampers comprise a viscous liquid damper and a tuned mass damper, wherein the viscous liquid damper generally comprises a cylinder body, viscous liquid and a piston provided with an orifice, vibration reduction control is realized by utilizing fluid resistance generated when the viscous liquid passes through the orifice, and in the process, the viscous liquid is easy to leak and has low reliability; the tuned mass damper comprises a mass block and a spring, and a control force is generated to react on the structure by using the reverse resonance of the tuned mass damper under the action of an external load, so that the vibration response of the structure is reduced, however, under the condition that the dynamic characteristic of the structure is changed, the control effect of the tuned mass damper is poor, and the reliability of vibration reduction is low; furthermore, the mass required to tune the mass damper is typically large and practical applications are limited.
Disclosure of Invention
The invention provides a tuned torsional inertial mass damper, which is used for solving or improving the problem that the conventional viscous liquid damper and the conventional tuned mass damper have low vibration reduction reliability in the use process.
The invention provides a tuned torsional inertial volume damper, comprising: the device comprises a first connecting piece, a second connecting piece, a sealing shell, a flywheel, a first torsion spring, a second torsion spring and a lead screw transmission assembly;
the second connecting piece is movably arranged on the first connecting piece along the vibration direction, the sealing shell is rotatably connected with the first connecting piece, the flywheel is rotatably arranged in the sealing shell, the sealing shell is connected with the second connecting piece through the lead screw transmission assembly, and viscous liquid is filled in the sealing shell;
the flywheel is provided with a first end face and a second end face which are deviated from each other, a first ratchet wheel is arranged on the first end face, and the first ratchet wheel is connected with the sealing shell through the first torsion spring; the second end face is provided with a second ratchet wheel, and the second ratchet wheel is connected with the sealing shell through a second torsion spring;
under the condition that the sealing shell rotates clockwise, the sealing shell drives the flywheel to rotate clockwise sequentially through the first torsion spring and the first ratchet wheel, and the second ratchet wheel can rotate relative to the second torsion spring; under the condition that the sealing shell rotates anticlockwise, the sealing shell sequentially drives the flywheel to rotate anticlockwise through the second torsion spring and a second ratchet wheel, and the first ratchet wheel can rotate relative to the first torsion spring.
According to the tuned torsional inertial mass damper provided by the invention, the first ratchet comprises a plurality of first ratchet teeth, and the plurality of first ratchet teeth are arranged around the axis of the flywheel; the second ratchet wheel comprises a plurality of second ratchet teeth which are arranged around the axis of the flywheel; the structure of the first ratchet is the same as that of the second ratchet, and each first ratchet comprises an abutting surface and a guide surface;
when the sealing shell rotates clockwise, one end of the first torsion spring close to the flywheel is abutted with the abutting surface of the first ratchet, and the guide surface of the second ratchet is used for allowing one end of the second torsion spring close to the flywheel to slide; when the seal housing rotates counterclockwise, one end of the second torsion spring close to the flywheel abuts against an abutting surface of the second ratchet, and the guide surface of the first ratchet is used for allowing one end of the first torsion spring close to the flywheel to slide.
According to the tuned torsional inertial volume damper provided by the invention, the first end face is parallel to the second end face, the abutting face is perpendicular to the first end face, and the guide face and the first end face are arranged at an acute angle.
According to the invention, the tuning type torsional inertia capacity damper comprises a lead screw transmission assembly and a tuning type torsional inertia capacity damper, wherein the lead screw transmission assembly comprises: a lead screw and a nut;
one end of the lead screw is connected with the sealing shell, the other end of the lead screw extends along the vibration direction, the nut is sleeved on the lead screw, and the nut is connected with the second connecting piece.
According to the tuned torsional inertia damper provided by the invention, the tuned torsional inertia Rong Zuni further comprises: a rotating shaft;
the rotating shaft is connected with the sealing shell, the flywheel is rotatably arranged on the rotating shaft, the first torsion spring is sleeved on the rotating shaft, and the rotating shaft is connected with the screw rod.
According to the tuned torsional inertial volume damper provided by the invention, the other end of the lead screw is provided with a limiting part, and the limiting part is used for stopping the nut.
According to the invention, the first connecting piece comprises: a first section and a second section;
the sealing shell is arranged in the first section, and the first section and the second section are arranged along the vibration direction; the second section and the second connecting piece are both in a cylindrical shape, the second section is sleeved on the second connecting piece, one end of the lead screw extends into the second section and is connected with the sealing shell, and the other end of the lead screw extends into the second connecting piece.
According to the tuned torsional inertial volume damper provided by the invention, the nut is arranged in the second connecting piece, and the nut is detachably connected with the inner side wall of the second connecting piece.
According to the tuned torsional inerter damper provided by the invention, the cross section of the sealing shell on a plane perpendicular to the axis of the flywheel is circular.
According to the tuned torsional inerter damper provided by the invention, a first connecting part is arranged at one end of the first connecting part, which is far away from the second connecting part, a second connecting part is arranged at one end of the second connecting part, which is far away from the first connecting part, the first connecting part is used for being connected with one of two connecting points which vibrate relatively in a controlled structure, and the second connecting part is used for being connected with the other of the two connecting points.
When a controlled structure needs to be damped, the first connecting piece is connected with one of two connection points of relative vibration in the controlled structure, the second connecting piece is connected with the other of the two connection points, when the controlled structure vibrates, relative motion is generated between the two connection points, and the two connection points circulate between a close state and a far state, so that the flywheel is driven to switch between a counterclockwise rotation state and a clockwise rotation state through the lead screw transmission assembly; when the direction of motion between the first connecting piece and the second connecting piece is driven by vibration, the flywheel still rotates according to the original rotation direction due to inertia, namely the rotation of the flywheel has hysteresis relative to the rotation of the sealing shell, so that the first torsion spring or the second torsion spring can be compressed, and the elastic force generated by the first torsion spring or the second torsion spring hinders the change of the motion direction between the first connecting piece and the second connecting piece so as to achieve the purpose of vibration reduction; meanwhile, viscous liquid can be sheared by the flywheel in the rotation process, the flywheel can be subjected to the damping force of the viscous liquid, and the damping force can block the rotation of the flywheel and can convert kinetic energy into heat energy at the same time, so that vibration energy is dissipated; and then realize under the effect of first torsional spring and second torsional spring elasticity and the effect of the damping force of viscous liquid to the vibration control, guaranteed vibration control's reliability.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a tuned torsional inerter Rong Zuni according to the present invention;
FIG. 2 is a schematic structural view of a first ratchet wheel provided in the present invention;
FIG. 3 is a schematic structural view of a second ratchet wheel provided in the present invention;
FIG. 4 isbase:Sub>A schematic cross-sectional view taken along A-A of FIG. 1;
reference numerals:
1: a first connecting member; 11: a first section; 12: a second section; 2: a second connecting member; 3: sealing the housing; 4: a flywheel; 41: a first ratchet; 42: a second ratchet; 43: an abutting surface; 44: a guide surface; 51: a first torsion spring; 52: a second torsion spring; 6: a lead screw drive assembly; 61: a lead screw; 611: a limiting part; 62: a nut; 7: a viscous liquid; 8: a rotating shaft; 81: a coupling; 82: a bearing; 91: a first connection portion; 92: a second connecting portion.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
In the description of the embodiments of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be configured in a specific orientation, and operate, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.
The applicant has found in the course of research and development that the following problems still exist with the existing tuned mass dampers and viscous liquid dampers.
For tuned mass dampers, the tuned mass dampers usually require a larger mass block to achieve an obvious vibration control effect, and the larger mass block increases the construction cost and also increases the installation difficulty; meanwhile, based on the working principle of the tuned mass damper, under the condition that the dynamic characteristic of the controlled structure is changed, the control effect of the tuned mass damper is reduced, even the tuned mass damper resonates in the same direction as the controlled structure, but the vibration response of the controlled structure is amplified, so that the robustness is poor; in addition, the tuned mass damper is mostly arranged in a plane, that is, the tuned mass damper is placed on a certain layer of the controlled structure, and the arrangement mode can sacrifice the use space of the controlled structure, so that the tuned mass damper has certain limitation.
For a viscous liquid damper, the pressure in a cavity for storing viscous liquid is high, and the problems of easy leakage, poor durability and the like exist.
The following describes a tuned torsional inerter damper provided by the present invention with reference to fig. 1 to 4.
As shown in fig. 1 to 3, the tuned torsional inertance damper of the present embodiment includes: the device comprises a first connecting piece 1, a second connecting piece 2, a sealing shell 3, a flywheel 4, a first torsion spring 51, a second torsion spring 52 and a lead screw transmission assembly 6.
The second connecting piece 2 is movably arranged on the first connecting piece 1 along the vibration direction, the sealing shell 3 is rotatably connected with the first connecting piece 1, the flywheel 4 is rotatably arranged in the sealing shell 3, the sealing shell 3 is connected with the second connecting piece 2 through the lead screw transmission assembly 6, viscous liquid 7 is filled in the sealing shell 3, and when the first connecting piece 1 and the second connecting piece 2 are close to or far away from each other along the vibration direction under the vibration effect, the sealing shell 3 can rotate anticlockwise or clockwise under the drive of the lead screw transmission assembly 6, namely linear vibration is converted into rotary motion of the sealing shell 3;
the flywheel 4 is provided with a first end face and a second end face which are deviated from each other, a first ratchet wheel is arranged on the first end face, and the first ratchet wheel is connected with the sealing shell 3 through a first torsion spring 51; the second end surface is provided with a second ratchet wheel which is connected with the sealing shell 3 through a second torsion spring 52;
under the condition that the sealing shell 3 rotates clockwise, the sealing shell 3 sequentially passes through the first torsion spring 51 and the first ratchet wheel to drive the flywheel 4 to rotate clockwise, the second ratchet wheel can rotate relative to the second torsion spring 52, one end of the first torsion spring 51 is fixedly connected with the sealing shell 3, when the sealing shell 3 drives the first torsion spring 51 to rotate clockwise, the other end of the first torsion spring 51 is equivalent to be meshed with the first ratchet wheel, so that the first torsion spring can be compressed, namely, the torque of the sealing shell 3 is transmitted to the flywheel 4 through the elastic force of the first torsion spring 51, so that the flywheel 4 is driven to rotate clockwise, one end of the second torsion spring 52 is fixedly connected with the sealing shell 3, when the sealing shell 3 drives the second torsion spring 52 to rotate clockwise, the other end of the second torsion spring 52 is equivalent to be separated from the second ratchet wheel, so that the second torsion spring 52 cannot be compressed, namely, the torque of the sealing shell 3 cannot be transmitted to the flywheel 4 through the second torsion spring 52, and is equivalent to be rotated relative to the other end of the second torsion spring 52;
similarly, under the condition that the seal housing 3 rotates counterclockwise, the seal housing 3 sequentially drives the flywheel 4 to rotate counterclockwise through the second torsion spring 52 and the second ratchet wheel, the first ratchet wheel can rotate relative to the first torsion spring 51, when the seal housing 3 drives the second torsion spring 52 to rotate counterclockwise, the other end of the second torsion spring 52 is equivalent to being engaged with the second ratchet wheel, so that the second torsion spring 52 can be compressed, that is, the torque of the seal housing 3 is transmitted to the flywheel 4 through the elastic force of the second torsion spring 52, so as to drive the flywheel 4 to rotate counterclockwise, and when the seal housing 3 drives the first torsion spring 51 to rotate counterclockwise, the other end of the first torsion spring 51 is equivalent to being separated from the first ratchet wheel, and the first torsion spring 51 cannot be compressed, that is, the torque of the seal housing 3 cannot be transmitted to the flywheel 4 through the first torsion spring 51, and is equivalent to the first ratchet wheel can rotate relative to the other end of the first torsion spring 51.
In the above working process, the first torsion spring 51 and the first ratchet wheel are used for transmitting the torque of the sealing housing 3 rotating clockwise to the flywheel 4 to drive the flywheel 4 to rotate clockwise, at this time, the second torsion spring 52 and the second ratchet wheel are not used, the second torsion spring 52 and the second ratchet wheel are used for transmitting the torque of the sealing housing 3 rotating counterclockwise to the flywheel 4 to drive the flywheel 4 to rotate counterclockwise, at this time, the first torsion spring 51 and the first ratchet wheel are not used.
When the controlled structure needs to be damped, the first connecting piece 1 is connected with one of two connecting points which vibrate relatively in the controlled structure, the second connecting piece 2 is connected with the other of the two connecting points, when the controlled structure vibrates, relative motion is generated between the two connecting points, and the two connecting points circulate between a close state and a far state, so that the flywheel 4 is driven to switch between a counterclockwise rotation state and a clockwise rotation state through the lead screw transmission assembly 6, and based on the principle of the lead screw transmission assembly 6, the equivalent mass of the flywheel 4 can be amplified, and the overall mass is reduced; when the direction of movement between the first connecting part 1 and the second connecting part 2 is changed by vibration, the flywheel 4 still rotates in the original rotation direction due to inertia, that is, the rotation of the flywheel 4 has hysteresis relative to the rotation of the seal housing 3, so as to compress the first torsion spring 51 or the second torsion spring 52, the elastic force generated by the first torsion spring 51 or the second torsion spring 52 hinders the change of the movement direction between the first connecting part 1 and the second connecting part 2, so as to achieve the purpose of vibration reduction, for example, when the seal housing 3 is switched from clockwise rotation to counterclockwise rotation, the other end of the second torsion spring 52 engages with the second ratchet wheel to prepare for driving the flywheel 4 to rotate counterclockwise, but the flywheel 4 still rotates clockwise due to inertia, the second torsion spring 52 compresses rapidly under the condition that the rotation directions of the flywheel 4 and the seal housing 3 are opposite, the elastic force generated by the second torsion spring hinders the rotation of the seal housing 3, and when the rotation of the seal housing 3 is hindered, the linear movement between the first connecting part 1 and the second connecting part 2 is hindered, so as to realize the relative movement between the first connecting part 1 and the second connecting part 2, so as to realize the vibration control.
Meanwhile, the flywheel 4 can shear the viscous liquid 7 in the rotation process, the flywheel 4 can receive the damping force of the viscous liquid 7, and the damping force can block the rotation of the flywheel 4 and can convert kinetic energy into heat energy at the same time, so that the vibration energy is dissipated; further, the vibration is controlled under the action of the elastic forces of the first torsion spring 51 and the second torsion spring 52 and the damping force of the viscous liquid 7, and the reliability of vibration control is ensured.
Compared with the existing viscous liquid damper, the viscous liquid 7 in the sealed shell 3 shown in the embodiment does not need a high-pressure environment, so that the leakage of the viscous liquid 7 is reduced, and the maintenance cost is reduced.
Based on the above working principle, the damping force can be changed by replacing the viscous liquid 7 with different viscosity coefficients, or the moment of inertia and the shearing area can be changed by replacing different flywheels 4, or the elastic force can be changed by adjusting the torsional rigidity of the first torsion spring 51 and the second torsion spring 52, that is, for different controlled structures, the damper can be adjusted by three adjusting modes to widen the damping frequency band of the tuned torsional inertia Rong Zuni device, thereby improving the robustness and the adaptability.
It should be noted that the vibration direction shown in this embodiment is a direction from left to right or a direction from right to left in fig. 1, and the viscous liquid 7 may be silicone oil.
In some embodiments, as shown in fig. 2 and 3, the first ratchet shown in this embodiment includes a plurality of first ratchet teeth 41, the plurality of first ratchet teeth 41 being arranged around the axis of the flywheel 4 to form the first ratchet; the second ratchet wheel comprises a plurality of second ratchet teeth 42, and the plurality of second ratchet teeth 42 are arranged around the axis of the flywheel 4 to form the second ratchet wheel; the first ratchet teeth 41 have the same structure as the second ratchet teeth 42, and each include an abutment surface 43 and a guide surface 44; when the seal housing 3 rotates clockwise, one end of the first torsion spring 51 close to the flywheel 4 abuts against the abutting surface 43 of the first ratchet 41, the first torsion spring 51 is equivalent to be meshed with the first ratchet 41, meanwhile, one end of the second torsion spring 52 close to the flywheel 4 can slide on the guide surface 44 of the second ratchet 42, and the second ratchet 42 and the second torsion spring 52 are equivalent to be separated, namely, the seal housing 3 can only compress the first torsion spring 51 through the first ratchet 41 and can not compress the second torsion spring 52 through the second ratchet 42 when rotating clockwise; similarly, when the seal housing 3 rotates counterclockwise, one end of the second torsion spring 52 close to the flywheel 4 abuts against the abutment surface 43 of the second ratchet 42, the second torsion spring 52 is equivalent to engage with the second ratchet 42, and one end of the first torsion spring 51 close to the flywheel 4 can slide on the guide surface 44 of the first ratchet 41, and the first ratchet 41 and the first torsion spring 51 are equivalent to separate from each other, that is, the seal housing 3 can only compress the second torsion spring 52 by the second ratchet 42 and cannot compress the first torsion spring 51 by the first ratchet 41 when rotating counterclockwise.
In some embodiments, as shown in fig. 2 and 3, the first end surface and the second end surface of the flywheel 4 shown in this embodiment are parallel, and the abutting surface 43 is perpendicular to the first end surface, so that one end of the first torsion spring 51 or the second torsion spring 52 can stably abut against the abutting surface 43 to realize engagement with the flywheel 4; the guide surface 44 is disposed at an acute angle to the first end surface, and one end of the first torsion spring 51 or the second torsion spring 52 cannot be engaged with the flywheel 4, i.e., separated from the flywheel 4, under the guide of the guide surface 44.
In some embodiments, as shown in fig. 1, the lead screw assembly 6 of the present embodiment includes: a lead screw 61 and a nut 62; one end of the screw 61 is connected with the sealing shell 3, the other end of the screw 61 extends along the vibration direction, the screw 61 is sleeved with the nut 62, and the nut 62 is connected with the second connecting piece 2.
Specifically, the axis of the seal housing 3, the axis of the lead screw 61, and the axis of the nut 62 are all overlapped, and when the first connecting piece 1 and the second connecting piece 2 are close to or far away from each other, the nut 62 moves on the lead screw 61 to drive the lead screw 61 to rotate, so as to drive the seal housing 3 to rotate.
In some embodiments, as shown in fig. 1, the tuned torsional inertia Rong Zuni apparatus of the present embodiment further comprises: a rotating shaft 8; the rotating shaft 8 is connected with the sealing shell 3, the flywheel 4 is rotatably arranged on the rotating shaft 8, the axis of the flywheel 4 is overlapped with the axis of the rotating shaft 8, the first torsion spring 51 and the second torsion spring 52 are sleeved on the rotating shaft 8, the rotating shaft 8 is connected with the lead screw 61, and the axis of the rotating shaft 8 is overlapped with the axis of the lead screw 61.
Specifically, the rotating shaft 8 is connected to the lead screw 61 through the coupler 81, the lead screw 61 drives the rotating shaft 8 to rotate through the coupler 81 so as to drive the sealed housing 3 to rotate, and the sealed housing 3 drives the flywheel 4 sleeved on the rotating shaft 8 to rotate by compressing the first torsion spring 51 or the second torsion spring 52.
Wherein, both ends of the rotating shaft 8 are connected with the first connecting member 1 through bearings 82.
The applicant calculates the total control force f generated by the tuned torsional inertia Rong Zuni device in the development process, and under the ideal condition of not considering transmission loss, the calculation formula of the total control force f is as follows:
wherein l is the lead of the lead screw 61, T e An elastic moment, T, generated by the first torsion spring 51 or the second torsion spring 52 a A damping moment generated for the viscous liquid 7.
Elastic moment T e The calculation formula of (a) is as follows:
T e ＝K t (θ 0 -θ 1 )
damping torque T generated by viscous liquid 7 a The calculation formula of (a) is as follows:
wherein, K t For torsional rigidity, C t As torsional damping coefficient, theta 0 And
angular displacement and angular velocity, theta, of the flywheel 4, respectively 1 And
angular displacement and angular velocity, theta, of the rotating shaft 8, respectively 1 And
also the angular displacement and the angular velocity of the sealed housing 3, respectively.
For the screw transmission assembly 6, the range of the lead l of the screw 61 is small, usually 0.01m to 0.08m, and the lead l is brought into a calculation formula of the total control force f, and the total control force f can be amplified to be dozens to hundreds of times of the sum of the moments, namely equivalent to amplifying the equivalent mass of the flywheel 4, the requirement of vibration reduction can be met without using the flywheel 4 with larger mass, and the cost is reduced.
Equivalent mass m of flywheel 4 eq The calculation formula of (a) is as follows:
where I is the moment of inertia of the flywheel 4, and for a circular flywheel, I = mr 2 The/2,m and r are the mass and radius of the flywheel 4, respectively.
In some embodiments, as shown in fig. 1, the other end of the screw 61 shown in this embodiment is provided with a limiting portion 611, and the limiting portion 611 is used for stopping the nut 62, so as to prevent the nut 62 from being screwed out of the screw 61 when the first connecting member 1 and the second connecting member 2 are far away from each other, thereby ensuring the reliability of the screw transmission assembly 6.
In some embodiments, as shown in fig. 1, the first connecting member 1 shown in the present embodiment includes: a first section 11 and a second section 12; the sealed shell 3 is arranged in the first section 11, and the first section 11 and the second section 12 are arranged along the vibration direction; the second section 12 and the second connecting piece 2 are both in a cylindrical shape, the second section 12 is sleeved on the second connecting piece 2, one end of the screw 61 extends into the second section 12 and is connected with the sealing shell 3, and the other end of the screw 61 extends into the second connecting piece 2.
Specifically, the cylindrical second section 12 guides the second connecting piece 2, so that the first connecting piece 1 and the second connecting piece 2 can stably move along the vibration direction; meanwhile, the lead screw 61 is arranged in the second section 12 and the second connecting piece 2, so that the lead screw 61 can be protected, and the reliability of the lead screw transmission assembly 6 is ensured.
Further, as shown in fig. 1, the nut 62 is disposed in the second connector 2, the second connector 2 can protect the nut 62, and the nut 62 is detachably connected to the inner sidewall of the second connector 2.
In some embodiments, as shown in fig. 4, the cross-sectional shape of the seal housing 3 in the plane perpendicular to the axis of the flywheel 4 is a circular shape, so that the viscous liquid 7 can be uniformly distributed in the seal housing 3, and the uniformity of shearing of the viscous liquid 7 by the flywheel 4 is ensured.
In some embodiments, as shown in fig. 1, the end of the first connecting member 1 away from the second connecting member 2 in the embodiment is provided with a first connecting portion 91, the end of the second connecting member 2 away from the first connecting member 1 is provided with a second connecting portion 92, the first connecting portion 91 is used for connecting with one of two connecting points of relative vibration in the controlled structure, and the second connecting portion 92 is used for connecting with the other of the two connecting points.
Specifically, when two opposite connection points on a controlled structure need to be damped, one connection point is connected with the first connection part 91, the other connection point is connected with the second connection part 92, so that the two connection points are connected through the tuned torsional inerter damper, when vibration occurs between the two connection points, the first connection part 1 makes reciprocating linear motion relative to the second connection part 2, the sealed shell 3 is driven to rotate through the lead screw transmission assembly 6, and the flywheel 4 is driven to rotate through the elasticity of the first torsion spring 51 or the second torsion spring 52; the connection mode of the two end points can directly replace the existing inclined strut or be shared with the inclined strut, and the adaptability of the tuned torsional inertia Rong Zuni device is improved.
The first connection portion 91 and the second connection portion 92 may be connection rings.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A tuned torsional inertance damper, comprising: the device comprises a first connecting piece, a second connecting piece, a sealing shell, a flywheel, a first torsion spring, a second torsion spring and a lead screw transmission assembly;
the second connecting piece is movably arranged on the first connecting piece along the vibration direction, the sealing shell is rotationally connected with the first connecting piece, the flywheel is rotationally arranged in the sealing shell, the sealing shell is connected with the second connecting piece through the lead screw transmission assembly, and viscous liquid is filled in the sealing shell;
the flywheel is provided with a first end face and a second end face which are deviated from each other, a first ratchet wheel is arranged on the first end face, and the first ratchet wheel is connected with the sealing shell through the first torsion spring; the second end face is provided with a second ratchet wheel, and the second ratchet wheel is connected with the sealing shell through the second torsion spring;
under the condition that the sealing shell rotates clockwise, the sealing shell drives the flywheel to rotate clockwise sequentially through the first torsion spring and the first ratchet wheel, and the second ratchet wheel can rotate relative to the second torsion spring; under the condition that the sealing shell rotates anticlockwise, the sealing shell sequentially drives the flywheel to rotate anticlockwise through the second torsion spring and a second ratchet wheel, and the first ratchet wheel can rotate relative to the first torsion spring.
2. The tuned torsional inerter damper of claim 1,
the first ratchet wheel comprises a plurality of first ratchet teeth which are arranged around the axis of the flywheel; the second ratchet wheel comprises a plurality of second ratchet teeth which are arranged around the axis of the flywheel; the first ratchet has the same structure as the second ratchet and comprises an abutting surface and a guide surface;
when the sealing shell rotates clockwise, one end of the first torsion spring close to the flywheel is abutted with the abutting surface of the first ratchet, and the guide surface of the second ratchet is used for allowing one end of the second torsion spring close to the flywheel to slide; when the seal housing rotates counterclockwise, one end of the second torsion spring close to the flywheel abuts against an abutting surface of the second ratchet, and the guide surface of the first ratchet is used for allowing one end of the first torsion spring close to the flywheel to slide.
3. The tuned torsional inerter damper of claim 2,
the first end face is parallel to the second end face, the abutting face is perpendicular to the first end face, and the guide face and the first end face are arranged at an acute angle.
4. The tuned torsional inerter damper of claim 1,
the lead screw transmission assembly includes: a lead screw and a nut;
one end of the lead screw is connected with the sealing shell, the other end of the lead screw extends along the vibration direction, the nut is sleeved on the lead screw, and the nut is connected with the second connecting piece.
5. The tuned torsional inerter damper of claim 4,
the tuned torsional inerter Rong Zuni further comprises: a rotating shaft;
the rotating shaft is connected with the sealing shell, the flywheel is rotatably arranged on the rotating shaft, the first torsion spring is sleeved on the rotating shaft, and the rotating shaft is connected with the screw rod.
6. The tuned torsional inerter damper of claim 4,
the other end of the lead screw is provided with a limiting part, and the limiting part is used for stopping the nut.
7. The tuned torsional inertance damper of claim 4,
the first connecting member includes: a first section and a second section;
the sealing shell is arranged in the first section, and the first section and the second section are arranged along the vibration direction; the second section and the second connecting piece are both cylindrical, the second section is sleeved on the second connecting piece, one end of the lead screw extends into the second section and is connected with the sealing shell, and the other end of the lead screw extends into the second connecting piece.
8. The tuned torsional inerter damper of claim 7,
the nut is arranged in the second connecting piece, and the nut is detachably connected with the inner side wall of the second connecting piece.
9. The tuned torsional inerter damper of claim 1,
the cross-sectional shape of the seal housing on a plane perpendicular to the axis of the flywheel is circular.
10. The tuned torsional inerter damper of claim 1,
the first connecting piece deviates from the one end of second connecting piece is equipped with first connecting portion, the one end that the second connecting piece deviates from first connecting piece is equipped with the second connecting portion, first connecting portion be used for with controlled structure relative vibration's one of them in two tie points be connected, the second connecting portion be used for with another one in two tie points be connected.
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| JP2008261408A (en) * | 2007-04-11 | 2008-10-30 | Fuji Heavy Ind Ltd | Flywheel apparatus |
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| CN113062486A (en) * | 2021-03-26 | 2021-07-02 | 华中科技大学 | Tuned viscous inertial mass damper with electromagnetic damping |
| CN114809349A (en) * | 2022-05-19 | 2022-07-29 | 广州大学 | Large-tonnage inertial volume type self-resetting damper with variable apparent mass |
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| JP2008261408A (en) * | 2007-04-11 | 2008-10-30 | Fuji Heavy Ind Ltd | Flywheel apparatus |
| JP2012184816A (en) * | 2011-03-07 | 2012-09-27 | Kozo Keikaku Engineering Inc | Damping device and vibration control device of structure |
| CN207079749U (en) * | 2017-07-26 | 2018-03-09 | 哈尔滨工业大学 | A kind of tuned mass damper and damping device |
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