CN113247307A - Spherical mechanical foot of lunar traveling mechanism with multidirectional vibration reduction function and vibration reduction method thereof - Google Patents
Spherical mechanical foot of lunar traveling mechanism with multidirectional vibration reduction function and vibration reduction method thereof Download PDFInfo
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- CN113247307A CN113247307A CN202110404716.8A CN202110404716A CN113247307A CN 113247307 A CN113247307 A CN 113247307A CN 202110404716 A CN202110404716 A CN 202110404716A CN 113247307 A CN113247307 A CN 113247307A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/16—Extraterrestrial cars
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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
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
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Abstract
The invention discloses a spherical mechanical foot of a lunar walking mechanism with a multi-direction vibration damping function and a vibration damping method thereof. Through the oblique energy dissipation viscoelastic damping structure and the central main energy dissipation viscoelastic damping structure, multi-direction harmful vibration transmitted by the spherical mechanical foot body is reduced, and vertical bearing capacity is provided for the spherical mechanical foot body.
Description
Technical Field
The invention relates to the fields of spaceflight, machinery and civil engineering, in particular to a spherical mechanical foot of a moon walking mechanism with a multidirectional vibration reduction function and a vibration reduction method thereof.
Technical Field
When the lunar base equipment moves on the surface of the moon, the foot end can be subjected to vibration in different directions, and the vibration can adversely affect the movement and transportation stability of the lunar base equipment. How to control the structural vibration of the foot end of the lunar base equipment under the complex environment of the lunar surface is a leading topic in the field of vibration control at present. The research on multidirectional vibration reduction and bearing performance is carried out on the foot end of the lunar foundation equipment, so that the external vibration excitation on the foot end can be effectively controlled, and the safe movement and stable transfer of the lunar foundation equipment are ensured.
At present, the research aiming at the mechanical foot vibration reduction technology still has great limitation, and the defects mainly lie in that: the vibration reduction research of the foot end is mostly focused on the vertical direction, and the research on multi-direction vibration reduction is not sufficient. However, when the moon-based equipment performs horizontal braking, obstacle crossing, slope traveling and other movements, the moon-based equipment is often excited by horizontal vibration, and the harmful horizontal vibration can adversely affect the structural strength and the operation stability of the moon-based equipment. Meanwhile, the vibration reduction method for the mechanical foot mostly depends on active vibration reduction or semi-active vibration reduction, and the reliability of the vibration reduction method is difficult to guarantee under the complex and scarce resource environment on the surface of the moon.
Passive control is a method of vibration control of a structure by attaching energy consuming devices or sub-structural systems to appropriate portions of the structure, or by structurally treating certain components of the structure itself to change the dynamic characteristics of the structural system. The passive control does not depend on external energy, and has the advantages of simple structure, low manufacturing cost and easy maintenance, and the application of the passive vibration control in the field of vibration reduction of lunar infrastructure equipment can adapt to the requirement of lunar complex environment.
The viscoelastic material is a very effective energy consumption material in the field of structural vibration control, two deformation mechanisms of elasticity and viscosity exist simultaneously under the action of external force, and the energy consumption mechanism is to dissipate vibration energy in a heat absorption mode by utilizing the shearing deformation of the viscoelastic material. Therefore, the spherical mechanical foot of the lunar traveling mechanism, which is applied to the foot end of lunar base equipment and has the multidirectional vibration reduction function, is designed by using the viscoelastic energy-consuming material, and has very important research value and application prospect.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the spherical mechanical foot of the lunar traveling mechanism with the multi-direction vibration reduction function, and the spherical mechanical foot has the advantages of multi-direction vibration reduction and energy consumption, no need of external energy, stable performance, simple design, convenient manufacture and the like.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:
a lunar traveling mechanism spherical mechanical foot with multi-directional vibration reduction function comprises:
the upper connecting part is connected with the upper mechanical leg;
the spherical mechanical foot body is positioned at the tail end of the mechanical leg of the moon walking mechanism;
the lower connecting part is connected with the upper end of the spherical mechanical foot body;
the energy-consumption viscoelastic damping structure comprises an upper connecting part, a lower connecting part and a plurality of oblique energy-consumption viscoelastic damping structures, wherein the upper connecting part and the lower connecting part are arranged in a rotating and symmetrical mode by taking the central main energy-consumption viscoelastic damping structure as a center.
The center main energy consumption viscoelastic damping structure is arranged at the center of the lower connecting part and the center of the upper connecting part, and comprises: a vertical outer steel cylinder, a first annular viscoelastic energy dissipation unit, a vertical inner steel cylinder and a vertical flexible connecting piece, wherein,
the lower end of the vertical outer steel cylinder is fixedly connected with the lower connecting part, and a first vertical gap is reserved between the upper end of the vertical outer steel cylinder and the upper connecting part;
the upper end of the vertical inner steel cylinder is connected with the upper connecting part through the vertical flexible connecting piece, and a second vertical gap is reserved between the lower end of the vertical inner steel cylinder and the lower connecting part;
a first annular viscoelastic energy consumption unit is arranged in an annular gap between the vertical inner steel cylinder and the vertical outer steel cylinder;
the structures of the oblique energy consumption viscoelastic damping structures are the same, and each oblique energy consumption viscoelastic damping structure comprises:
an oblique outer steel cylinder, a first annular viscoelastic energy consumption unit, an oblique inner steel cylinder and an oblique flexible connecting piece,
the lower end of the oblique outer steel cylinder is fixedly connected with the lower connecting part, and a third vertical gap is reserved between the upper end of the oblique outer steel cylinder and the upper connecting part;
the upper end of the oblique inner steel cylinder is connected with the upper connecting part through the oblique flexible connecting piece, and a fourth vertical gap is reserved between the lower end of the oblique inner steel cylinder and the lower connecting part;
and a second annular viscoelastic energy consumption unit is arranged in an annular gap between the obliquely outward steel cylinder and the obliquely inward steel cylinder.
The lower connecting part is a lower connecting plate, and the center line of the lower connecting plate is superposed with the spherical center of the spherical mechanical foot body;
the upper connecting part is an upper connecting plate, and the upper connecting plate and the lower connecting plate are arranged at intervals in parallel.
The vertical flexible connecting piece, the oblique flexible connecting piece, the first annular viscoelastic energy consumption unit and the second annular viscoelastic energy consumption unit are all made of high-dissipation viscoelastic materials.
The spherical mechanical foot body is made of superhard aluminum alloy 7A 09.
The first vertical gap, the second vertical gap, the third vertical gap and the fourth vertical gap are all 5-10 mm.
The upper end of the mechanical foot body is provided with a groove, the lower connecting plate is mounted in the groove through a bolt, and the upper surface of the lower connecting plate is flush with the upper end face of the mechanical foot body.
The upper connecting plate and the lower connecting plate are both steel plates.
A vibration reduction method based on the lunar traveling mechanism spherical mechanical foot with the multi-direction vibration reduction function,
when the lunar base equipment performs horizontal braking, obstacle crossing and slope surface advancing movement on the lunar surface, the spherical mechanical foot body is subjected to horizontal vibration, the spherical mechanical foot generates horizontal shear deformation, the oblique flexible connecting piece and the vertical flexible connecting piece generate shear deformation after being subjected to reciprocating shear force, the horizontal vibration of the upper structure is isolated, the horizontal vibration response of the upper structure is reduced, and the horizontal vibration isolation effect is generated; meanwhile, the viscoelastic materials in the oblique flexible connecting piece and the vertical flexible connecting piece can dissipate vibration energy in a heat absorption mode, so that the influence of the horizontal vibration effect on the upper structure is reduced, and horizontal vibration reduction is carried out;
when the lunar foundation equipment performs vertical jumping and obstacle crossing movement on the surface of a moon, the spherical mechanical foot body is subjected to vertical vibration, an obliquely outer steel cylinder of the oblique energy-consuming viscoelastic damping structure generates oblique deformation after being subjected to reciprocating vibration, an obliquely inner steel cylinder generates oblique deformation in the opposite direction after being subjected to reciprocating vibration, the second annular viscoelastic energy-consuming unit generates oblique shearing deformation under relative movement, the vibration of the upper structure is isolated, the vertical vibration response of the upper structure is reduced, the vertical vibration isolation effect is generated, meanwhile, viscoelastic materials in the second annular viscoelastic energy-consuming unit provide vibration energy which can be dissipated in a heat absorption mode during shearing deformation, the influence of the vertical vibration effect on the upper structure is reduced, and vertical vibration attenuation is performed;
when the spherical mechanical foot body is subjected to vertical vibration action, the vertical outer steel cylinder of the central main energy consumption viscoelastic damping structure is subjected to vertical deformation after being subjected to reciprocating vibration action, the vertical inner steel cylinder is subjected to vertical deformation in the opposite direction after being subjected to reciprocating vibration action, the first annular viscoelastic energy consumption unit is subjected to vertical shearing deformation under relative motion, the vibration of the upper structure is isolated, the vertical vibration response of the upper structure is reduced, the vertical vibration isolation effect is generated, meanwhile, the viscoelastic material in the first annular viscoelastic energy consumption unit can dissipate vibration energy in a heat absorption mode during shearing deformation, the influence of vertical vibration on the upper structure is reduced, and vertical vibration reduction is carried out;
when the spherical mechanical foot body is subjected to torsional vibration, the vertical outer steel cylinder generates torsional deformation, the first annular viscoelastic energy consumption unit is subjected to reciprocating shearing action to dissipate torsional vibration energy in a heat absorption mode, the obliquely outward steel cylinder and the obliquely inner steel cylinder generate reciprocating compression and shearing action on the second annular viscoelastic energy consumption unit, and the second annular viscoelastic energy consumption unit provides damping and energy consumption capacity when generating reciprocating compression and shearing deformation, consumes torsional vibration energy and performs torsional vibration reduction.
Has the advantages that: compared with the prior art, the spherical mechanical foot of the lunar traveling mechanism with the multi-direction vibration reduction function can simultaneously perform energy consumption vibration reduction in the horizontal direction, the vertical direction and the torsion.
The invention adopts a passive vibration control technology, achieves the multi-direction vibration reduction effect by changing the dynamic characteristic of a structural system, does not need external energy input, has stable performance and can be suitable for the resource-lacking lunar environment.
Secondly, the invention adopts the viscoelastic material, the viscoelastic damper provides rigidity and damping for the spherical mechanical foot, and the viscoelastic material damper not only has multidirectional vibration isolation capability, but also has excellent energy consumption capability, thereby greatly improving the vibration reduction effect of the device.
Drawings
FIG. 1 is a schematic structural diagram of a spherical mechanical foot of a lunar traveling mechanism with multi-directional vibration reduction function according to the present invention;
FIG. 2 is a sectional view of the A-A section of the lunar rover spherical mechanical foot with multi-directional vibration reduction of the present invention;
FIG. 3 is a cross-sectional view of a B-B cross section of a lunar traveling mechanism spherical mechanical foot with multi-directional vibration reduction function according to the present invention;
FIG. 4 is a C-C cross-sectional view of the lunar rover spherical mechanical foot with multi-directional vibration reduction of the present invention;
FIG. 5 is a cross-sectional view of a D-D cross-section of a lunar walking mechanism ball-shaped mechanical foot with multi-directional vibration reduction of the present invention;
wherein: 1. the energy-saving device comprises an upper connecting plate, 2. a lower connecting plate, 3. an oblique outer steel cylinder, 4. a second annular viscoelastic energy consumption unit, 5. an oblique inner steel cylinder, 6. an oblique flexible connecting piece, 7. a vertical outer steel cylinder, 8. a first annular viscoelastic energy consumption unit, 9. a vertical inner steel cylinder, 10. a vertical flexible connecting piece, 11. a spherical mechanical foot body, 12. an oblique energy consumption viscoelastic damping structure and 13. a central main energy consumption viscoelastic damping structure.
Detailed Description
The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and examples.
As shown in fig. 1 to 3, the spherical mechanical foot of the lunar walking mechanism with multi-directional vibration reduction function of the invention comprises an upper connecting plate 1, a lower connecting plate 2, a spherical mechanical foot body 11, an oblique energy dissipation viscoelastic damping structure 12 and a central main energy dissipation viscoelastic damping structure 13, wherein the oblique energy dissipation viscoelastic damping structure 12 and the central main energy dissipation viscoelastic damping structure are connected with the upper connecting plate and the lower connecting plate;
the oblique energy consumption viscoelastic damping structure 12 comprises an oblique outer steel cylinder 3, a second annular viscoelastic energy consumption unit 4, an oblique inner steel cylinder 5, the oblique inner steel cylinder 5 and the upper connecting plate 1 which are connected through an oblique flexible connecting piece 6, and a gap of 5-10 mm is reserved between the oblique inner steel cylinder 5 and the lower connecting plate 2; the obliquely outward steel cylinder 3 is connected with the lower connecting plate 2 through welding, and a gap of 5-10 mm is reserved between the obliquely outward steel cylinder and the upper connecting plate 1;
in this embodiment, the four oblique energy consumption viscoelastic damping structures 12 are arranged between the upper connecting plate 1 and the lower connecting plate 2 in a rotational symmetry manner by using the central main energy consumption viscoelastic damping structure 13;
the central main energy consumption viscoelastic damping structure comprises a vertical outer steel cylinder 7, a first annular viscoelastic energy consumption unit 8 and a vertical inner steel cylinder 9, wherein the vertical inner steel cylinder 9 is connected with the upper connecting plate 1 through a vertical flexible connecting piece 10, and a gap of 5-10 mm is reserved between the vertical inner steel cylinder and the lower connecting plate 2; the vertical outer steel cylinder 7 is connected with the lower connecting plate 2 in a welding mode, and a gap of 5-10 mm is reserved between the vertical outer steel cylinder and the upper connecting plate 1;
as a preferred option of the technical solution of this embodiment, the second annular viscoelastic energy consuming unit 4 and the first annular viscoelastic energy consuming unit 8 are both made of a high-dissipation viscoelastic material and are hollow cylinders;
as the optimization of the technical scheme of the embodiment, the oblique flexible connecting piece 6 and the vertical flexible connecting piece 10 are both made of high-dissipation viscoelastic materials and are cylindrical;
preferably, the spherical mechanical foot body 11 is made of superhard aluminum alloy 7A 09;
preferably, in the technical solution of this embodiment, the inner surface of the lower connecting plate is provided with threads, and is connected to the spherical mechanical foot body through bolts.
The spherical mechanical foot of the moon walking mechanism with the multi-direction vibration reduction function can simultaneously carry out horizontal vibration reduction, vertical vibration reduction and torsional vibration reduction, and the specific vibration reduction method comprises the following steps:
when the lunar foundation equipment performs horizontal braking, obstacle crossing, slope advancing and other movements on the lunar surface, the spherical mechanical foot body is subjected to horizontal vibration, the spherical mechanical foot of the lunar walking mechanism with the multi-direction vibration reduction function generates horizontal shear deformation, the oblique flexible connecting piece 6 and the vertical flexible connecting piece 10 generate shear deformation after being subjected to reciprocating shear force, horizontal vibration of an upper structure is isolated, horizontal vibration response of the upper structure is reduced, and the effect of horizontal vibration isolation is generated. Meanwhile, the viscoelastic materials in the oblique flexible connecting piece 6 and the vertical flexible connecting piece 10 have larger damping and good energy consumption capability, and can dissipate vibration energy in a heat absorption mode when horizontal shearing deformation occurs, so that the influence of the horizontal vibration effect on the upper structure is reduced, and the horizontal vibration reduction effect is generated.
When the base equipment performs vertical jumping, obstacle crossing and other movements on the surface of the moon, the spherical mechanical foot body is subjected to vertical vibration, the inclined outer steel cylinder 3 of the inclined energy-consumption viscoelastic damping structure is subjected to reciprocating vibration and then generates inclined deformation, the inclined inner steel cylinder 5 generates inclined deformation in the opposite direction after being subjected to reciprocating vibration, and the second annular viscoelastic energy-consumption unit 4 generates inclined shearing deformation under relative movement, so that the vibration of the upper structure is isolated, the vertical vibration response of the upper structure is reduced, and the vertical vibration isolation effect is generated. Meanwhile, the viscoelastic material in the second annular viscoelastic energy consumption unit 4 provides larger damping and good energy consumption capability during shearing deformation, so that vibration energy is dissipated in a heat absorption mode, the influence of vertical vibration on the upper structure is reduced, and a vertical vibration reduction effect is generated.
When the spherical mechanical foot body is subjected to vertical vibration action, the vertical outer steel cylinder 7 of the central main energy consumption viscoelastic damping structure is subjected to vertical deformation after being subjected to reciprocating vibration action, the vertical inner steel cylinder 9 is subjected to vertical deformation in the opposite direction after being subjected to reciprocating vibration action, and the first annular viscoelastic energy consumption unit 8 is subjected to vertical shearing deformation under relative motion, so that the vibration of the upper structure is isolated, the vertical vibration response of the upper structure is reduced, and the vertical vibration isolation effect is generated. Meanwhile, the viscoelastic material in the first annular viscoelastic energy consumption unit 8 provides large damping and good energy consumption capability during shearing deformation, so that vibration energy is dissipated in a heat absorption mode, the influence of vertical vibration on the upper structure is reduced, and a vertical vibration reduction effect is generated.
When the spherical mechanical foot body is subjected to torsional vibration, the vertical outer steel cylinder 7 generates torsional deformation, and the first annular viscoelastic energy consumption unit 8 is subjected to reciprocating shearing action to dissipate torsional vibration energy in a heat absorption mode. The oblique outer steel cylinder 3 and the oblique inner steel cylinder 5 generate reciprocating compression and shearing actions on the second annular viscoelastic energy consumption unit 4, and the second annular viscoelastic energy consumption unit 4 provides large damping and good energy consumption capacity when reciprocating compression and shearing deformation are generated, consumes torsional vibration energy and generates torsional vibration damping effects.
It should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And such obvious variations or modifications which fall within the spirit of the invention are intended to be covered by the scope of the present invention.
Claims (9)
1. A lunar traveling mechanism spherical mechanical foot with multi-directional vibration reduction function comprises:
the upper connecting part is connected with the upper mechanical leg;
the spherical mechanical foot body is positioned at the tail end of the mechanical leg of the moon walking mechanism;
the lower connecting part is connected with the upper end of the spherical mechanical foot body;
the energy-consumption-mainly-centered viscoelastic damping structure is characterized in that a center energy-consumption viscoelastic damping structure and a plurality of oblique energy-consumption viscoelastic damping structures are arranged between the upper connecting part and the lower connecting part, and the oblique energy-consumption viscoelastic damping structures are rotationally and symmetrically arranged by taking the center energy-consumption-mainly-restricted viscoelastic damping structure as a center.
2. The lunar rover spherical mechanical foot with the multidirectional vibration reduction function according to claim 1, wherein the central main dissipative viscoelastic damping structure is provided at the center of the lower and upper connection parts, and comprises: a vertical outer steel cylinder, a first annular viscoelastic energy dissipation unit, a vertical inner steel cylinder and a vertical flexible connecting piece, wherein,
the lower end of the vertical outer steel cylinder is fixedly connected with the lower connecting part, and a first vertical gap is reserved between the upper end of the vertical outer steel cylinder and the upper connecting part;
the upper end of the vertical inner steel cylinder is connected with the upper connecting part through the vertical flexible connecting piece, and a second vertical gap is reserved between the lower end of the vertical inner steel cylinder and the lower connecting part;
a first annular viscoelastic energy consumption unit is arranged in an annular gap between the vertical inner steel cylinder and the vertical outer steel cylinder;
the structures of the oblique energy consumption viscoelastic damping structures are the same, and each oblique energy consumption viscoelastic damping structure comprises:
an oblique outer steel cylinder, a first annular viscoelastic energy consumption unit, an oblique inner steel cylinder and an oblique flexible connecting piece,
the lower end of the oblique outer steel cylinder is fixedly connected with the lower connecting part, and a third vertical gap is reserved between the upper end of the oblique outer steel cylinder and the upper connecting part;
the upper end of the oblique inner steel cylinder is connected with the upper connecting part through the oblique flexible connecting piece, and a fourth vertical gap is reserved between the lower end of the oblique inner steel cylinder and the lower connecting part;
and a second annular viscoelastic energy consumption unit is arranged in an annular gap between the obliquely outward steel cylinder and the obliquely inward steel cylinder.
3. The lunar rover spherical mechanical foot with the multidirectional vibration reduction function according to claim 1, characterized in that the lower connecting part is a lower connecting plate, and the center line of the lower connecting plate is coincident with the center of the spherical mechanical foot body;
the upper connecting part is an upper connecting plate, and the upper connecting plate and the lower connecting plate are arranged at intervals in parallel.
4. The lunar rover spherical mechanical foot with the multidirectional vibration reduction function according to claim 2, wherein the vertical flexible connectors, the oblique flexible connectors, the first annular viscoelastic energy dissipating unit and the second annular viscoelastic energy dissipating unit are all made of high dissipation viscoelastic materials.
5. The lunar rover spherical mechanical foot with the multidirectional vibration reduction function according to claim 1, characterized in that the spherical mechanical foot body is made of superhard aluminum alloy 7A 09.
6. The lunar rover spherical mechanical foot with the multi-directional shock absorption function according to claim 2, wherein the first vertical gap, the second vertical gap, the third vertical gap and the fourth vertical gap are all 5-10 mm.
7. The lunar rover spherical mechanical foot with the multidirectional vibration reduction function according to claim 3, characterized in that a groove is formed in the upper end of the mechanical foot body, and after the lower connecting plate is installed in the groove through bolts, the upper surface of the lower connecting plate is flush with the upper end face of the mechanical foot body.
8. The lunar rover spherical mechanical foot with the multidirectional vibration reduction function according to claim 3, wherein the upper connecting plate and the lower connecting plate are both steel plates.
9. A vibration damping method based on the lunar traveling mechanism spherical mechanical foot with the multidirectional vibration damping function according to any one of claims 2 to 8,
when the lunar base equipment performs horizontal braking, obstacle crossing and slope surface advancing movement on the lunar surface, the spherical mechanical foot body is subjected to horizontal vibration, the spherical mechanical foot generates horizontal shear deformation, the oblique flexible connecting piece and the vertical flexible connecting piece generate shear deformation after being subjected to reciprocating shear force, the horizontal vibration of the upper structure is isolated, the horizontal vibration response of the upper structure is reduced, and the horizontal vibration isolation effect is generated; meanwhile, the viscoelastic materials in the oblique flexible connecting piece and the vertical flexible connecting piece can dissipate vibration energy in a heat absorption mode, so that the influence of the horizontal vibration effect on the upper structure is reduced, and horizontal vibration reduction is carried out;
when the lunar foundation equipment performs vertical jumping and obstacle crossing movement on the surface of a moon, the spherical mechanical foot body is subjected to vertical vibration, an obliquely outer steel cylinder of the oblique energy-consuming viscoelastic damping structure generates oblique deformation after being subjected to reciprocating vibration, an obliquely inner steel cylinder generates oblique deformation in the opposite direction after being subjected to reciprocating vibration, the second annular viscoelastic energy-consuming unit generates oblique shearing deformation under relative movement, the vibration of the upper structure is isolated, the vertical vibration response of the upper structure is reduced, the vertical vibration isolation effect is generated, meanwhile, viscoelastic materials in the second annular viscoelastic energy-consuming unit provide vibration energy which can be dissipated in a heat absorption mode during shearing deformation, the influence of the vertical vibration effect on the upper structure is reduced, and vertical vibration attenuation is performed;
when the spherical mechanical foot body is subjected to vertical vibration action, the vertical outer steel cylinder of the central main energy consumption viscoelastic damping structure is subjected to vertical deformation after being subjected to reciprocating vibration action, the vertical inner steel cylinder is subjected to vertical deformation in the opposite direction after being subjected to reciprocating vibration action, the first annular viscoelastic energy consumption unit is subjected to vertical shearing deformation under relative motion, the vibration of the upper structure is isolated, the vertical vibration response of the upper structure is reduced, the vertical vibration isolation effect is generated, meanwhile, the viscoelastic material in the first annular viscoelastic energy consumption unit can dissipate vibration energy in a heat absorption mode during shearing deformation, the influence of vertical vibration on the upper structure is reduced, and vertical vibration reduction is carried out;
when the spherical mechanical foot body is subjected to torsional vibration, the vertical outer steel cylinder generates torsional deformation, the first annular viscoelastic energy consumption unit is subjected to reciprocating shearing action to dissipate torsional vibration energy in a heat absorption mode, the obliquely outward steel cylinder and the obliquely inner steel cylinder generate reciprocating compression and shearing action on the second annular viscoelastic energy consumption unit, and the second annular viscoelastic energy consumption unit provides damping and energy consumption capacity when generating reciprocating compression and shearing deformation, consumes torsional vibration energy and performs torsional vibration reduction.
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