CN118030768B - Vibration isolator with leveling function - Google Patents
Vibration isolator with leveling function Download PDFInfo
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- CN118030768B CN118030768B CN202410437180.3A CN202410437180A CN118030768B CN 118030768 B CN118030768 B CN 118030768B CN 202410437180 A CN202410437180 A CN 202410437180A CN 118030768 B CN118030768 B CN 118030768B
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- 229910002027 silica gel Inorganic materials 0.000 claims description 5
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- 238000002955 isolation Methods 0.000 description 20
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- 230000017525 heat dissipation Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
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Abstract
The invention discloses a vibration isolator with a leveling function, which belongs to the technical field of vibration control, and comprises: base, platform, elastic component and magnetic mechanism, the base top is located to the platform, the elastic component has at least four and evenly distributes in the base side, the elastic component is located the platform bottom, the platform is connected on magnetic mechanism's upper portion, the base is connected to magnetic mechanism's lower part, the elastic component includes the elastic sleeve, the elastic sleeve both ends are connected with the commentaries on classics board respectively and change the cover, commentaries on classics board and base side swing joint, change cover and platform bottom swing joint, be equipped with the screw rod in the elastic sleeve, commentaries on classics board center is equipped with ball nut, screw rod one end is rotated with changeing the cover and is connected, the screw rod other end sets up with ball nut cooperation. According to the invention, the elastic piece on the side of the base is used for isolating the platform from vibration, the elastic piece can deform to adjust rigidity, the adaptability to load is improved, and the space layout is reasonable.
Description
Technical Field
The invention relates to the technical field of vibration control, in particular to a vibration isolator with a leveling function.
Background
With the continuous development of the integrated circuit manufacturing industry, micro-scale and nano-scale precision processing equipment represented by semiconductor manufacturing integrates advanced technologies of various disciplines such as light, electricity and control. In the actual use process of the high-precision testing instrument, the testing precision of the high-precision testing instrument can be influenced by a plurality of factors such as the external environment, the operation of an instrument bracket and an equipment body, and the like, so that the precision is reduced or the testing result can not meet the requirements. Therefore, it is important to effectively isolate or inhibit the environment where the precision measuring instrument is located, and to solve the problem that the precision measuring instrument is frequently interfered by external noise in the use process to influence the testing precision. In order to reduce the influence of vibration on electronic equipment and improve the installation adaptability of electronic products, some vibration control measures are generally adopted to reduce the vibration and impact to the electronic products. Vibration isolators have been widely used in practical applications as the simplest and effective vibration damping devices.
However, the stiffness of the conventional vibration isolator in each direction is fixed, and the service condition of the conventional vibration isolator is basically set once the conventional vibration isolator is designed and set. If the service environment and loading platform of the vibration isolator are changed, the vibration isolator needs to be redesigned and replaced. For example, vibration damping is performed on the on-board equipment, and if the vibration environment of the on-board equipment in a certain direction changes, or the weight of the on-board equipment is increased a little more than that of the original design, or the flying environment of the aircraft changes, the original vibration isolator needs to be redesigned or replaced.
Korean patent application No. KR1020190091577 discloses a damper for a vibration isolation system and a precompressed load type vibration isolation system having the same, which includes an elastic member provided at a side of a supporting block and forming a hinge, each side of the supporting block rotatably supporting a hinge arm by the elastic member, a top plate portion slides in a horizontal direction while a railway is running or stopped, an external force such as a seismic vibration force is applied in the horizontal direction with respect to the supporting block by friction, and finally a large amount of energy existing is consumed by the elastic member to realize vibration isolation. The invention has room for further improvement in terms of the following technical problems: the elastic support with positive rigidity is not arranged below the top plate, so that the longitudinal vibration isolation capability above the top plate is poor; the gap between the top plate and the supporting block is small, heat is difficult to dissipate, and the service life of the parts and the vibration isolation effect are affected.
Disclosure of Invention
The invention aims to provide a vibration isolator with a leveling function, which has strong load adaptability.
In order to solve the technical problems, the invention specifically provides the following technical scheme:
A vibration isolator with leveling function, comprising: base, platform, elastic component and magnetic mechanism, the base top is located to the platform, and the elastic component has at least four and evenly distributes in the base side, and the elastic component is located the platform bottom, and the platform is connected on magnetic mechanism's upper portion, and the base is connected to magnetic mechanism's lower part. The elastic piece is connected to the side of the base, the platform is covered above the base and the elastic pieces, the elastic pieces form elastic supports to serve as positive stiffness elements, meanwhile, the lower part and the upper part of the magnetic mechanism form magnetic adsorption to serve as negative stiffness elements, the positive stiffness elements are connected with the negative stiffness elements in parallel, nonlinear stiffness of the platform at the balance position is achieved, the vibration isolation effect is improved, the elastic pieces are designed on the side of the base, the overall height layout of the vibration isolator is reduced, applicability to different precise instruments is improved, meanwhile, the elastic pieces can also form protection to the side of the device, lateral interference and interference of the vibration isolator are reduced, and vibration isolation stability is improved.
Preferably, the elastic piece comprises an elastic sleeve, two ends of the elastic sleeve are respectively connected with a rotating plate and a rotating sleeve, the rotating plate is movably connected with the side of the base, the rotating sleeve is movably connected with the bottom of the platform, a screw is arranged in the elastic sleeve, a ball nut is arranged in the center of the rotating plate, one end of the screw is rotatably connected with the rotating sleeve, and the other end of the screw is matched with the ball nut. The elastic sleeve is connected to the side of the base and the lower part of the platform through the rotating plate and the rotating sleeve, so that the elastic sleeve has an initial length in the axial direction of the elastic sleeve, the screw rods of all elastic pieces are rotated, the screw rods convert the rotary motion into linear motion through the ball nuts, the rotating plate is close to the rotating sleeve along the axial direction of the screw rods, at the moment, the two ends of the elastic sleeve are close to each other, the length of the elastic sleeve in the axial direction is reduced, the waist of the elastic sleeve is expanded and deformed outwards, the elastic support of the elastic sleeve to the bottom of the platform is improved, namely, the rigidity adjustment of positive rigidity elements of the bottom of the platform is realized, so that different loads above the platform are adapted conveniently, and the load adaptability of the vibration isolator is improved;
The waist of the elastic sleeve expands outwards to deform, so that the contact area between the elastic sleeve and the bottom of the platform is increased, when the platform or the base is subjected to lateral impact force, the increased contact surface increases friction force, the position deviation amplitude of the platform relative to the base is reduced, the vibration isolation effect is improved, and the stability of the platform is improved;
When the gravity center of a supported object above the platform deviates from the center of the platform, the platform inclines relative to the base, at the moment, the axial length of the elastic sleeve at one side of the pressing-down part can be shortened by adjusting the screw rod at one side, so that the supporting force of the elastic sleeve at the side to the platform is improved until the platform is parallel to the base, the leveling function is realized, the supporting stability of the platform to an object is improved, and the object is prevented from falling from the platform;
The rigidity and levelness adjusting mode through the rotating screw is simple to operate, electronic components are not required to be additionally arranged, and the overall weight and manufacturing cost of the vibration isolator are reduced.
Preferably, a bracket connected with the rotating plate in a rotating way is fixed on the side of the base, and a support connected with the rotating sleeve in a rotating way is fixed at the bottom of the platform. The support that outwards extends provides the tensile deformation space of elastic sleeve, avoids the elastic sleeve to shorten the expansion deformation in-process extrusion base lateral wall, leads to the inhomogeneous its ability that resets of elastic sleeve deformation, and the pillar is connected with the commentaries on classics cover and has reduced the load of elastic component and base junction, avoids the platform to the elastic component too big elastic component pressure to lead to elastic component and base junction deformation fracture, and the platform is connected through the elastic component with the base, and ground vibrations and interference can be through the elastic sleeve consumption, has greatly reduced the interference that the platform received, promotes platform stability.
Preferably, the elastic sleeve comprises an inner layer, the inner layer is connected with the rotating plate and the rotating sleeve, the middle part of the inner layer is sunken towards the direction of the screw, an outer layer is arranged on the outer side of the inner layer, a sealing cavity is formed by the inner layer and the outer layer, and the middle part of the outer layer is outwards protruded. When the elastic sleeve is shortened on the axial length, the middle part of the inner layer continuously deforms towards the bending of the screw rod, meanwhile, the middle part of the outer layer continuously deforms towards the outer part, at the moment, gas in the sealing cavity can be matched with the deformation of the outer layer to together provide elastic support for the bottom of the platform, vibration transmission is consumed, when the inner layer continuously deforms inwards to be in contact with the screw rod, on one hand, the screw rod forms deformation limit on the inner layer, on the other hand, the screw rod is extruded by the inner layer, the screw rod is difficult to continuously rotate, limitation of an adjusting process is formed, the elastic sleeve is prevented from being excessively adjusted and shortened by an operator, the outer layer and the inner layer are broken or lose the deformation restoring capacity after being excessively deformed, and self-protection of adjustment is realized.
Preferably, annular grooves are formed in two ends of the inner layer, clamping rings are arranged at two ends of the outer layer and are connected with the annular grooves in an assembling mode, and sealing rings are arranged in the annular grooves. The outer layer and the inner layer are assembled and connected with the annular groove through the clamping ring, so that the manufacturing difficulty of the sealing cavity of the elastic sleeve is reduced, the elastic sleeve is convenient to assemble and disassemble, the maintenance and replacement cost is reduced, the air tightness of the sealing cavity is improved by the sealing ring, and the air leakage probability is reduced.
Preferably, the outer layer is provided with air holes, the air holes are internally provided with one-way silica gel valves for external circulation, the side wall of the base is provided with through grooves, and the air holes face the through grooves. When the high-performance equipment is supported above the platform, the equipment possibly generates heat due to continuous motion work, heat is transferred to the elastic piece through the platform, the temperature of the sealing cavity between the inner layer and the outer layer is increased, the elastic supporting force of the outer layer on the platform is changed, after the air pressure in the sealing cavity reaches a certain degree, the valve port of the one-way silica gel valve is opened under the action of the air pressure, the sealing cavity is communicated with the outside, so that the air pressure in the sealing cavity is released, on one hand, the released air pressure is favorable for restoring the supporting force of the elastic sleeve on the platform, the vibration isolation performance is prevented from being influenced by the change of the rigidity value of the positive rigidity element, on the other hand, the released air pressure carries air flow to enter the base through the through groove, the cooling of the magnetic mechanism is favorable, the magnetism of the magnetic mechanism is prevented from being influenced by the heat, the vibration isolation performance is prevented from being influenced by the change of the negative rigidity value, the output air flow can also clean the height interval space between the platform and the base, the device can be cleaned without disassembling, the cleaning difficulty is reduced, the air pressure is gradually reduced to be insufficient for opening the valve port of the one-way silica gel valve, and the one-way silica gel valve is closed, and the one-way valve is formed.
Preferably, the magnetic mechanism comprises a central magnet fixed at the bottom of the platform, the bottom of the central magnet is positioned in the base, an external magnet is arranged on the side of the central magnet in a surrounding manner, and the external magnet is arranged in the base. The external magnet which is arranged in a surrounding way can apply balanced magnetic attraction to the central magnet so as to improve the stability of the negative stiffness element and improve the vibration isolation effect.
Preferably, the center magnet is a cylindrical magnet with the end face facing downwards, the outer magnet is fan-shaped with the end face facing downwards, adjacent outer magnets are spaced and connected with connecting rods, an outer ring is arranged in the base, and the outer magnet is movably connected with the outer ring. The heat of the device can be directly transferred to the central magnet through the platform, the gaps between the adjacent external magnets are beneficial to the air flow released by the elastic sleeve to act on the central magnet, so that the cooling of the central magnet is formed, the influence of the heat on magnetism is reduced, and the stability of the negative stiffness element is improved.
Compared with the prior art, the invention has the following beneficial effects: the elastic piece is connected with the magnetic mechanism in parallel to realize nonlinear rigidity of the platform, so that vibration isolation performance is improved; the elastic piece is arranged at the side, so that the device has strong adaptability and can reduce side interference; positive rigidity adjustment can be formed by rotating the screw rod, so that the load adaptability is improved; the supporting force of the single-side elastic piece can be adjusted through the screw rod, so that the leveling of the platform is realized, and the stability is improved; after the elastic sleeve is expanded, the displacement friction force between the elastic sleeve and the platform can be improved, and the vibration isolation effect is further improved; the inner layer can be abutted against the screw rod to realize adjustment protection and prevent excessive deformation; the sealed cavity is capable of dissipating shock and attenuating noise; the sealed cavity can release air flow to cool the magnetic mechanism after being heated, so that the influence of heat on magnetism is avoided, negative rigidity is changed, shock insulation performance is stabilized, and the output air flow can form self-cleaning for gaps between the platform and the base; the external magnet provides stable magnetic attraction for the central magnet, so that stability after the platform is deflected is reduced. Therefore, the vibration isolator with the leveling function has strong load adaptability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those of ordinary skill in the art that the drawings in the following description are exemplary only and that other implementations can be obtained from the extensions of the drawings provided without inventive effort.
Fig. 1 is a schematic view of an isolator with leveling function;
FIG. 2 is a schematic side view of a vibration isolator with leveling function;
Fig. 3 is a schematic cross-sectional view of a vibration isolator with leveling function;
FIG. 4 is a schematic cross-sectional view of an elastic member;
FIG. 5 is a schematic cross-sectional view of an inner layer and an outer layer;
FIG. 6 is an enlarged schematic view of area A of FIG. 5;
FIG. 7 is a schematic view of an outer ring;
FIG. 8 is a schematic cross-sectional view of the B-B position.
Reference numerals: a base 1; a bracket 10; a platform 2; a pillar 20; an elastic member 3; an elastic sleeve 30; a rotating plate 31; a swivel 32; a screw 33; a ball nut 34; an inner layer 300; an outer layer 301; an annular groove 302; a clasp 303; a seal ring 304; a one-way silicone valve 35; a through slot 36; a magnetic mechanism 4; a center magnet 40; an external magnet 41; a link 42; an outer ring 43; a holder 44; and a spring 45.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The concept of the present application will be described with reference to the accompanying drawings. It should be noted that the following descriptions of the concepts are only for making the content of the present application easier to understand, and do not represent a limitation on the protection scope of the present application; meanwhile, the embodiments of the present application and features in the embodiments may be combined with each other without collision. The application will be described in detail below with reference to the drawings in connection with embodiments.
Referring to fig. 1-2, a vibration isolator with leveling function, comprising: base 1, platform 2, elastic component 3 and magnetic mechanism 4, base 1 top is located to platform 2, and platform 2 and base 1 contactless, elastic component 3 have at least four and evenly arrange in base 1 side, and elastic component 3 is located platform 2 bottoms, and platform 2 is connected to magnetic mechanism 4's upper portion, and base 1 is connected to magnetic mechanism 4's lower part.
It should be noted that, the base 1 includes a rectangular plate and a rectangular frame, the rectangular frame is mounted above the rectangular plate, the platform is above the rectangular frame without language, and the elastic member is located at a side of the rectangular frame and above the rectangular plate.
The elastic piece 3 is connected to the side of the base 1, the platform 2 is covered above the base 1 and each elastic piece 3, the elastic piece 3 forms elastic support to the platform 2 to serve as a positive stiffness element, meanwhile, the lower part and the upper part of the magnetic mechanism 4 form magnetic adsorption to serve as a negative stiffness element, the positive stiffness element and the negative stiffness element are connected in parallel, nonlinear stiffness of the platform 2 at a balance position is realized, the vibration isolation effect is improved, the design of the elastic piece 3 on the side of the base 1 is facilitated, the overall height layout of the vibration isolator is reduced, applicability to different precise instruments is improved, meanwhile, the elastic piece 3 can also form protection to the side of the device, overall side interference and interference of the vibration isolator are reduced, and vibration isolation stability is improved.
Referring to fig. 4, the elastic member 3 includes an elastic sleeve 30, two ends of the elastic sleeve 30 are respectively connected with a rotating plate 31 and a rotating sleeve 32, the rotating plate 31 is movably connected with the side of the base 1, the rotating sleeve 32 is movably connected with the bottom of the platform 2, a screw 33 is arranged in the elastic sleeve 30, a ball nut 34 is arranged in the center of the rotating plate 31, one end of the screw 33 is rotatably connected with the rotating sleeve 32, and the other end of the screw 33 is matched with the ball nut 34.
One end of the screw 33 has a shoulder, a bearing is provided on the side of the rotating sleeve 32, the outer ring of the bearing is connected with a shaft sleeve, and the inner side of the shaft sleeve is connected with the end of the screw 33 and limited by the shoulder.
The elastic sleeve 30 is connected to the side of the base 1 and the lower part of the platform 2 through the rotating plate 31 and the rotating sleeve 32, so that elastic support and vibration consumption of the elastic sleeve 30 to the platform 2 are realized, the elastic sleeve 30 has initial length in the axial direction, the screw rods 33 of each elastic piece 3 are rotated, the screw rods 33 convert rotary motion into linear motion through the ball nuts 34, the rotating plate 31 is close to the rotating sleeve 32 along the axial direction of the screw rods 33, at the moment, the two ends of the elastic sleeve 30 are close to each other, the length of the elastic sleeve 30 in the axial direction is reduced, the waist of the elastic sleeve 30 is outwards expanded and deformed, the elastic support of the elastic sleeve 30 to the bottom of the platform 2 is improved, namely, the rigidity adjustment of positive rigidity elements at the bottom of the platform 2 is realized, so that different loads above the platform 2 are adapted, and the load adaptability of the vibration isolator is improved.
Because the waist of the elastic sleeve 30 expands outwards to deform, the contact area between the elastic sleeve 30 and the bottom of the platform 2 is increased, when the platform 2 or the base 1 is subjected to lateral impact force, the increased contact surface increases friction force, so that the position deviation amplitude of the platform 2 relative to the base 1 is reduced, the vibration isolation effect is improved, and the stability of the platform 2 is improved.
When the center of gravity of the supported object above the platform 2 deviates from the center of the platform 2, the platform 2 is inclined relative to the base 1, at this time, the axial length of the elastic sleeve 30 at one side of the pressing down is shortened by adjusting the screw 33 at one side, so that the supporting force of the elastic sleeve 30 at the side to the platform 2 is improved until the platform 2 is parallel to the base 1, the leveling function is realized, the supporting stability of the platform 2 to an object is improved, the object is prevented from falling from the platform 2, the rigidity and levelness are adjusted by rotating the screw 33, the operation is simple, no additional electronic component is needed, and the whole weight and the manufacturing cost of the vibration isolator are reduced.
Referring to fig. 2, a bracket 10 rotatably connected to a swivel plate 31 is fixed to a side of a base 1, and a strut 20 rotatably connected to a swivel sleeve 32 is fixed to a bottom of a platform 2.
It should be noted that the bracket 10 extends horizontally and outwardly at the side of the base 1, and one end of the screw 33 passes through the ball nut 34 and is located at the inner side of the bracket 10, so that the operator can manually adjust the bracket, and after the adjustment is completed, the screw 33 is mounted with a fastening nut to form the positioning of the rotating plate 31.
The support 10 that outwards extends provides the tensile deformation space of elastic sleeve 30, avoid elastic sleeve 30 to shorten the extrusion base 1 lateral wall of expansion deformation in-process, lead to its ability of resetting of elastic sleeve 30 deformation inhomogeneous, pillar 20 is connected with change cover 32 and has reduced the load of elastic piece 3 and base 1 junction, avoid platform 2 to the excessive pressure of elastic piece 3 to lead to elastic piece 3 and base 1 junction deformation fracture, platform 2 is connected through elastic piece 3 with base 1, ground vibrations and interference can be through elastic sleeve 30 consumption, greatly reduced the interference that platform 2 received, promote platform 2 stability.
Referring to fig. 5, the elastic sleeve 30 includes an inner layer 300, the inner layer 300 is connected with a rotating plate 31 and a rotating sleeve 32, the middle of the inner layer 300 is recessed toward a screw 33, an outer layer 301 is disposed on the outer side of the inner layer 300, the inner layer 300 and the outer layer 301 form a sealed cavity, and the middle of the outer layer 301 is protruded outwards.
When the screw 33 is rotated to shorten the axial length of the elastic sleeve 30, the middle part of the inner layer 300 continuously bends and deforms towards the screw 33, meanwhile, the middle part of the outer layer 301 continuously bends and deforms towards the outside, at the same time, gas in the sealed cavity can provide support for the bottom of the platform 2, vibration transmission is consumed, noise transmission is weakened, when the inner layer 300 continuously deforms inwards to contact the screw 33, on one hand, the screw 33 forms deformation limit for the inner layer 300, on the other hand, the inner layer 300 presses the screw 33, the screw 33 is difficult to continuously rotate, the limit of an adjusting process is formed, the elastic sleeve 30 is prevented from being excessively adjusted and shortened by an operator, the outer layer 301 and the inner layer 300 are broken or lose the capability of restoring deformation after being excessively deformed, and self-protection of adjustment is realized.
Referring to fig. 6, annular grooves 302 are provided at both ends of the inner layer 300, snap rings 303 are provided at both ends of the outer layer 301, the snap rings 303 are assembled with the annular grooves 302, and sealing rings 304 are provided in the annular grooves 302.
The outer layer 301 and the inner layer 300 are assembled and connected with the annular groove 302 through the clamping ring 303, so that the manufacturing difficulty of the sealing cavity of the elastic sleeve 30 is reduced, the disassembly and assembly are convenient, the maintenance and replacement cost is reduced, the air tightness of the sealing cavity is improved by the sealing ring 304, and the air leakage probability is reduced.
Referring to fig. 5, the outer layer 301 is provided with an air hole, a one-way silicone valve 35 for external circulation is arranged in the air hole, a through groove 36 is formed in the side wall of the base 1, and the air hole faces the through groove 36.
When the high-performance equipment is supported above the platform 2, the equipment possibly generates heat due to continuous movement work, heat is transferred to the elastic piece 3 through the platform 2, the temperature of the sealed cavity between the inner layer 300 and the outer layer 301 is increased, the elastic supporting force of the outer layer 301 to the platform 2 is changed, after the air pressure in the sealed cavity reaches a certain degree, the valve port of the one-way silicone valve 35 is opened under the action of the air pressure, the sealed cavity is communicated with the outside, the air pressure in the sealed cavity is released, on one hand, the released air pressure is favorable for restoring the supporting force of the elastic sleeve 30 to the platform 2, the rigidity value change of a positive rigidity element is avoided, on the other hand, the released air pressure carries air flow to enter the base 1 through the through groove 36, the cooling of the magnetic mechanism 4 is favorable, the influence of the heat on the magnetism of the magnetic mechanism 4 is avoided, the influence of the negative rigidity value change on the vibration isolation performance is avoided, the output air flow can also clean the height interval space between the platform 2 and the base 1, the cleaning of the device can be realized without dismantling, the difficulty of cleaning of the device is reduced, the valve port of the one-way silicone valve 35 is gradually reduced to be insufficient to open after the air pressure release, on the one-way valve 35 is closed, and the sealed vibration consumption of the one-way silicone valve 35 is closed again.
Referring to fig. 3, the magnetic mechanism 4 includes a central magnet 40 fixed to the bottom of the platform 2, the bottom of the central magnet 40 is located in the base 1, an external magnet 41 is circumferentially arranged on the side of the central magnet 40, and the external magnet 41 is located in the base 1.
The circumferentially arranged external magnets 41 can exert a balanced magnetic attraction force on the center magnet 40 to improve the stability of the negative stiffness element and enhance the vibration isolation effect.
Referring to fig. 7-8, the center magnet 40 is a cylindrical magnet with a downward end surface, the outer magnet 41 is fan-shaped with a downward end surface, adjacent outer magnets 41 are spaced and connected with a connecting rod 42, an outer ring 43 is arranged in the base 1, and the outer magnets 41 are movably connected with the outer ring 43.
The heat of the device can be directly transferred to the middle magnet through the platform 2, and the gaps between the adjacent outer magnets 41 are beneficial to the air flow released by the elastic sleeve 30 to act on the middle magnet, so that the cooling of the middle magnet is formed, the influence of the heat on magnetism is reduced, and the stability of the negative stiffness element is improved.
The inner side of the outer ring 43 is circumferentially provided with a retainer 44, the retainer 44 is positioned between adjacent outer magnets 41 and is matched with the connecting rod 42, and a spring 45 is connected between the retainer 44 and the adjacent outer magnets 41. The external magnet 41 is located above the inner bottom surface of the base 1.
The link 42 is an elastic rod, and the plurality of external magnets 41 are rotatable with respect to the outer ring 43 via the link 42, and the axis of rotation coincides with the axis of the center magnet 40.
The vibration interference of the ground is sequentially transmitted to the outer ring 43, the retainer 44, the connecting rod 42 and the external magnet 41 through the base 1, the elastic material of the connecting rod 42 facilitates the installation of the plurality of external magnets 41 on the retainer 44, when the external vibration is transmitted to the retainer 44 through the base 1, the vibration of the retainer 44 causes the spring 45 to deform, so that the spring 45 presses the external magnet 41 connected with the spring, and the plurality of external magnets 41 are connected to the retainer 44 in a ring-shaped rotation manner through the connecting rod 42, so that when the single external magnet 41 moves, the plurality of external magnets 41 synchronously rotate coaxially relative to the central magnet 40, thereby being beneficial to correcting the magnetic attraction force of the external magnet 41 to the central magnet 40 and improving the vibration isolation performance.
The external magnet 41 is kept at a certain height above the inner bottom surface of the base 1 through the retainer 44 and the connecting rod 42, namely, the external magnet 41 is connected with the outer ring 43 only through the connecting rod 42 and the retainer 44, so that the levelness and the horizontal height of the external magnet 41 are ensured, and meanwhile, external vibration can be consumed through the elastic connecting rod 42, the external magnet 41 is ensured to rotate on the same horizontal plane and the same axis, and the magnetic attraction stability is improved.
The external magnets 41 which can rotate relatively are beneficial to heat dissipation, and the air output from the elastic piece 3 at the side can promote the plurality of external magnets 41 to rotate relative to the central magnet 40, so that the cooling and heat dissipation effects are further improved, the magnetic attraction stability is ensured, and the vibration isolation performance is improved.
The above examples and/or embodiments are merely for illustrating the preferred embodiments and/or implementations of the present technology, and are not intended to limit the embodiments and implementations of the present technology in any way, and any person skilled in the art should be able to make some changes or modifications to the embodiments and/or implementations without departing from the scope of the technical means disclosed in the present disclosure, and it should be considered that the embodiments and implementations are substantially the same as the present technology.
The principles and embodiments of the present application have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present application and its core ideas. The foregoing is merely illustrative of the preferred embodiments of this application, and it is noted that there is objectively no limit to the specific structure disclosed herein, since numerous modifications, adaptations and variations can be made by those skilled in the art without departing from the principles of the application, and the above-described features can be combined in any suitable manner; such modifications, variations and combinations, or the direct application of the inventive concepts and aspects to other applications without modification, are contemplated as falling within the scope of the present application.
Claims (4)
1. A vibration isolator with leveling function, comprising: the device comprises a base (1), a platform (2), an elastic piece (3) and a magnetic mechanism (4), wherein the platform (2) is arranged above the base (1),
The method is characterized in that: the elastic pieces (3) are at least four and are uniformly distributed on the sides of the base (1), the elastic pieces (3) are positioned at the bottom of the platform (2), the upper part of the magnetic mechanism (4) is connected with the platform (2), the lower part of the magnetic mechanism (4) is connected with the base (1),
The elastic piece (3) comprises an elastic sleeve (30), two ends of the elastic sleeve (30) are respectively connected with a rotating plate (31) and a rotating sleeve (32), the rotating plate (31) is movably connected with the side of the base (1), the rotating sleeve (32) is movably connected with the bottom of the platform (2), a screw (33) is arranged in the elastic sleeve (30), a ball nut (34) is arranged in the center of the rotating plate (31), one end of the screw (33) is rotatably connected with the rotating sleeve (32), the other end of the screw (33) is matched with the ball nut (34),
The elastic sleeve (30) comprises an inner layer (300), the inner layer (300) is connected with the rotating plate (31) and the rotating sleeve (32), the middle part of the inner layer (300) is sunken towards the direction of the screw rod (33), an outer layer (301) is arranged on the outer side of the inner layer (300), the inner layer (300) and the outer layer (301) form a sealing cavity, the middle part of the outer layer (301) is outwards protruded, annular grooves (302) are formed at two ends of the inner layer (300), clamping rings (303) are arranged at two ends of the outer layer (301), the clamping rings (303) are connected with the annular grooves (302) in an assembling mode, sealing rings (304) are arranged in the annular grooves (302),
The outer layer (301) is provided with air holes, a one-way silica gel valve (35) which circulates outwards is arranged in the air holes, a through groove (36) is formed in the side wall of the base (1), and the air holes face the through groove (36).
2. The vibration isolator with leveling function according to claim 1, wherein: the support (10) connected with the rotating plate (31) in a rotating mode is fixed on the side of the base (1), and the support (20) connected with the rotating sleeve (32) in a rotating mode is fixed on the bottom of the platform (2).
3. The vibration isolator with leveling function according to claim 1, wherein: the magnetic mechanism (4) comprises a center magnet (40) fixed at the bottom of the platform (2), the bottom of the center magnet (40) is located in the base (1), an external magnet (41) is arranged on the side of the center magnet (40) in a surrounding mode, and the external magnet (41) is arranged in the base (1).
4. A vibration isolator with leveling function according to claim 3, characterized in that: the center magnet (40) is a cylindrical magnet with the end face downward, the outer magnet (41) is fan-shaped and has the end face downward, the adjacent outer magnets (41) are spaced and connected with the connecting rod (42), the outer ring (43) is arranged in the base (1), and the outer magnets (41) are movably connected with the outer ring (43).
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286665A (en) * | 2016-10-08 | 2017-01-04 | 中国船舶重工集团公司第七〇九研究所 | Adjustable non-linear double-layer vibration isolating device |
| CN110417956A (en) * | 2018-04-28 | 2019-11-05 | Oppo广东移动通信有限公司 | Electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| RU172016U1 (en) * | 2016-10-12 | 2017-06-26 | федеральное государственное бюджетное образовательное учреждение высшего образования "Московский государственный технический университет имени Н.Э. Баумана (национальный исследовательский университет)" (МГТУ им. Н.Э. Баумана) | Multi-axis active anti-vibration platform |
| JP7055390B2 (en) * | 2019-04-11 | 2022-04-18 | 株式会社三誠Ａｉｒ断震システム | An air seismic isolation leveling valve device and a seismic isolation device provided with the air seismic isolation leveling valve device. |
| CN116592078A (en) * | 2023-03-29 | 2023-08-15 | 浙江大学 | Self-adaptive rigidity-variable damping vibration isolator |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286665A (en) * | 2016-10-08 | 2017-01-04 | 中国船舶重工集团公司第七〇九研究所 | Adjustable non-linear double-layer vibration isolating device |
| CN110417956A (en) * | 2018-04-28 | 2019-11-05 | Oppo广东移动通信有限公司 | Electronic equipment |
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