WO2023071321A1 - Ensemble d'amortissement et dispositif de vibration pourvu de celui-ci - Google Patents

Ensemble d'amortissement et dispositif de vibration pourvu de celui-ci Download PDF

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Publication number
WO2023071321A1
WO2023071321A1 PCT/CN2022/107450 CN2022107450W WO2023071321A1 WO 2023071321 A1 WO2023071321 A1 WO 2023071321A1 CN 2022107450 W CN2022107450 W CN 2022107450W WO 2023071321 A1 WO2023071321 A1 WO 2023071321A1
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WO
WIPO (PCT)
Prior art keywords
elastic rod
mass
vibration damping
mass block
spring assembly
Prior art date
Application number
PCT/CN2022/107450
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English (en)
Chinese (zh)
Inventor
马列
Original Assignee
广东美的制冷设备有限公司
美的集团股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority claimed from CN202111272804.3A external-priority patent/CN116066501A/zh
Priority claimed from CN202122640242.5U external-priority patent/CN216111886U/zh
Application filed by 广东美的制冷设备有限公司, 美的集团股份有限公司 filed Critical 广东美的制冷设备有限公司
Publication of WO2023071321A1 publication Critical patent/WO2023071321A1/fr

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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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F7/00—Vibration-dampers; Shock-absorbers
    • F16F7/10—Vibration-dampers; Shock-absorbers using inertia effect
    • F16F7/104—Vibration-dampers; Shock-absorbers using inertia effect the inertia member being resiliently mounted

Definitions

  • the present application relates to the field of shock absorbers, in particular to a shock absorber assembly and a vibration device with the same.
  • vibration absorber is used for vibration reduction.
  • the vibration is three-way, but because the traditional vibration absorber generally adopts one-way vibration absorption, the vibration absorption effect is limited.
  • the present application aims to solve at least one of the technical problems existing in the related art. For this reason, the present application proposes a vibration damping assembly, which forms a three-way vibration absorption and has a good vibration damping effect.
  • the present application also proposes a vibration device having the above-mentioned vibration damping assembly.
  • the vibration damping assembly includes: a connection part, the connection part is installed to the equipment main body; a base plate, the base plate is located under the connection part; a first mass spring assembly, the The first mass spring assembly includes a first elastic rod and a first mass block, the first elastic rod is arranged on the base plate, the first elastic rod is a solid part, and the first mass block is installed on the The first elastic rod; the second mass spring assembly, the second mass spring assembly includes a second elastic rod and a second mass block, the second elastic rod is mounted on the base plate, the second elastic rod At least a part is formed as a hollow structure, the second mass block is mounted to the second elastic rod, the first elastic rod and the second elastic rod both pass through the connecting part, the first elastic rod and the At least one of the second elastic rods is fixed to the connecting portion.
  • the vibration damping effect in three directions can be realized by arranging the first mass spring assembly and the second mass spring assembly, forming three directions of vibration absorption, and the vibration damping effect is good. Furthermore, since the extending direction of the first elastic rod and the second elastic rod are the same, the installation directions of the first mass spring assembly and the second mass spring assembly are the same, which can greatly save space.
  • the shock absorbing assembly further includes a shock absorbing buffer, the shock absorbing buffer is arranged on the base plate and supports the connecting portion, and one end of the first elastic rod is connected to In the shock absorbing buffer member, the other end of the first elastic rod passes through the connecting portion and is provided with the first mass block.
  • the first elastic rod is fixed to the connecting part.
  • the connecting portion is provided with a first through hole, and the second elastic rod is clearance-fitted with the first through hole.
  • the vibration damping assembly further includes a third mass spring assembly
  • the third mass spring assembly includes a third elastic rod and a third mass block
  • the third elastic rod is installed on the base
  • the seat plate, the third elastic rod is a solid piece and the third elastic rod passes through the connecting part, and the third mass block is installed on the third elastic rod.
  • At least one of the cross-sections of the first elastic rod and the third elastic rod is formed in a circular shape.
  • the connecting portion is provided with a second through hole, and the third elastic rod is clearance-fitted with the second through hole.
  • the second mass and the third mass are located on both sides of the connecting portion.
  • the first mass spring assembly further includes a first fastening nut, the first fastening nut is threadedly engaged with the first elastic rod, and the two sides of the first mass block Both are provided with the first fastening nuts to fix the first mass blocks to the first elastic rods.
  • the lower first fastening nut is spaced apart from the connecting portion.
  • the second mass spring assembly further includes a second fastening nut, the second fastening nut is threadedly engaged with the second elastic rod, and the two sides of the second mass block Both are provided with the second fastening nuts to fix the second mass blocks to the second elastic rods.
  • the vibration equipment according to the embodiment of the present application includes: a main body of the equipment; a vibration damping assembly, the vibration damping assembly is the vibration damping assembly according to any one of the above-mentioned embodiments of the present application, and the connecting part is connected to the equipment main body.
  • the vibration damping effect in three directions can be realized, forming three-directional vibration absorption, and the vibration damping effect is good. Furthermore, since the extension direction of the first elastic rod and the second elastic rod are the same, the installation directions of the first mass spring assembly and the second mass spring assembly are the same, which can greatly save space.
  • FIG. 1 is a schematic diagram of a damping assembly according to an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a vibratory device provided with a vibration damping assembly according to an embodiment of the present application.
  • Vibration damping assembly 100 equipment main body 200,
  • the first mass spring assembly 3 the first elastic rod 30, the first mass block 31, the first fastening nut 32,
  • the second mass spring assembly 4 the second elastic rod 40, the second mass block 41, the second fastening nut 42,
  • the third mass spring assembly 6 the third elastic rod 60, the third mass block 61, the third fastening nut 62,
  • connection should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application in specific situations.
  • the vibration damping assembly 100 according to the embodiment of the present application will be described below with reference to FIGS. Any equipment that generates vibration, such as outdoor units of air conditioners, etc.
  • the vibration damping assembly 100 includes: a connecting part 1, a base plate 2, a first mass spring assembly 3 and a second mass spring assembly 4, wherein the connecting part 1 is installed to the equipment Subject 200.
  • the connection part 1 can be connected to any position of the device body 200 , for example, the connection part 1 can be connected to the foot plate of the device body 200 , and the vibration generated by the device body 200 can be transmitted to the connection part 1 .
  • the connecting part 1 and the foot plate of the device body 200 are integrally processed into a molded part, that is, a part of the structure of the device body 200 is used to define the connecting part 1, thereby saving costs and reducing types of parts.
  • the base plate 2 is located below the connecting portion 1. It should be noted that in the description of this application, the terms “above” and “below” are relative positional relationships, which means that the base plate 2 is located at the connecting portion 1 away from the main body 200 of the device. One side of , indicating that the base plate 2 is placed on the placement surface.
  • the first mass spring assembly 3 includes a first elastic rod 30 and a first mass block 31, the first elastic rod 30 is arranged on the base plate 2, the first elastic rod 30 is a solid part, and the first mass block 31 is mounted on the first elastic Rod 30.
  • the first elastic rod 30 can provide stiffness in three directions, that is, tension-compression stiffness K Az and bending stiffness K Ax , K Ay . Since the first elastic rod 30 is a solid structure, the tension-compression stiffness is obviously greater than Bending rigidity, so that the bending rigidity of the first elastic rod 30 and the quality provided by the first mass block 31 can be used to form a dynamic vibration absorber. When the excitation frequencies on 1 overlap, part of the vibration energy can be transferred to the first mass-spring assembly 3 , so as to achieve the purpose of controlling the vibration of the device main body 200 .
  • the first elastic rod 30 not only provides stiffness, but also distributes the first mass block 31, the first mass block 31 is not an ideal mass point, but a block with distributed mass, the first elastic rod 30 and the first mass block 31
  • the distributed mass characteristic of the mass block 31 has a relatively obvious influence on the calculation accuracy of the natural frequency, so when calculating the natural frequency of the first mass-spring assembly 3, a complete finite element of the first elastic rod 30 and the first mass block 31 can be established model, considering the mass distribution properties of both.
  • the frequency can be fine-tuned by adjusting the position of the first mass 31 on the first elastic rod 30 , after the adjustment is completed, the first mass block 31 is fixed.
  • the second mass-spring assembly 4 includes a second elastic rod 40 and a second mass block 41, the second elastic rod 40 is mounted on the base plate 2, at least a part of the second elastic rod 40 is formed as a hollow structure, and the second mass block 41 is installed To the second elastic rod 40 , both the first elastic rod 30 and the second elastic rod 40 pass through the connection part 1 , and at least one of the first elastic rod 30 and the second elastic rod 40 is fixed to the connection part 1 .
  • the second elastic rod 40 can provide rigidity in three directions, that is, tension-compression stiffness KBz and bending stiffness KBx , KBy .
  • the second elastic rod 40 Since at least a part of the second elastic rod 40 is formed as a hollow structure, it can Reduce the tension-compression stiffness of the second elastic rod 40 and increase the bending stiffness of the second elastic rod 40, thereby utilizing the tension-compression stiffness of the second elastic rod 40 and the quality provided by the second mass block 41 to form a dynamic vibration absorber, When the natural frequency of the second mass spring assembly 4 overlaps with the excitation frequency transmitted from the device body 200 to the connection part 1 and the base plate 2, a part of the vibration energy can be transferred to the second mass spring assembly 4, thereby achieving the control of the device body 200 vibrations on purpose.
  • the natural frequency of the second mass-spring assembly 4 composed of the second elastic rod 40 and the second mass block 41 deviates from the design, it can be adjusted by adjusting the second mass block 41 in the second elastic rod 40 Fine-tune the frequency at the upper position, and fix the second mass block 41 after the adjustment is completed.
  • the extension direction of the first elastic rod 30 and the second elastic rod 40 is defined as the Z-axis direction, and the horizontal direction includes the X-axis direction and the Y-axis direction.
  • the bending stiffness of the first elastic rod 30 and the mass provided by the first mass block 31 can be used to form a dynamic vibration absorber
  • the tension and compression of the second elastic rod 40 can be used to form a dynamic vibration absorber.
  • the stiffness and the quality provided by the second mass block 41 form a dynamic vibration absorber, whereby the first mass spring assembly 3 and the second mass spring assembly 4 can reduce frequency vibrations in different directions, that is, the first mass spring assembly 3 can lower the device body 200
  • the second mass spring assembly 4 can reduce the characteristic frequency vibration in the vertical direction (Z-axis direction) of the device main body 200 .
  • the vibration damping effect in three directions can be realized by setting the first mass spring assembly 3 and the second mass spring assembly 4 , forming three directions of vibration absorption, and the vibration damping effect is good. Furthermore, since the first elastic rod 30 and the second elastic rod 40 extend in the same direction, the installation direction of the first mass spring assembly 3 and the second mass spring assembly 4 is the same, which can greatly save space.
  • the vibration damping assembly 100 further includes a vibration damping buffer 5, the vibration damping buffer 5 is arranged on the base plate 2 and the vibration damping buffer 5 supports the connecting portion 1, One end of the first elastic rod 30 is connected to the shock absorber 5 , and the other end of the first elastic rod 30 passes through the connecting portion 1 and is provided with a first mass block 31 . That is to say, the shock absorbing buffer 5 can play the role of shock absorbing and buffering, and the vibration transmitted to the connecting part 1 can be transmitted to the base plate 2 after being buffered by a part of the shock absorbing buffer 5, thereby further improving the shock absorbing effect. The damping effect of the assembly 100.
  • the shock absorbing buffer member 5 may be a rubber material member, a metal elastic member, or the like.
  • the connecting part 1 is provided with an installation hole for installing the vibration-damping buffer 5 , so as to facilitate the positioning and installation of the vibration-damping buffer 5 .
  • the first elastic rod 30 is fixed to the connecting part 1, thereby avoiding the displacement of the vibration damping assembly 100 due to vibration, and ensuring the vibration capability of the connecting part 1. It can be transferred to the first mass spring assembly 3 to achieve the purpose of vibration damping. Further, the first elastic rod 30 can be fixed to the connection part 1 through the installation nut 7, the installation nut 7 is threadedly matched with the first elastic rod 30 and the installation nut 7 stops on the connection part 1, that is to say, the first elastic rod 30 constitute the mounting bolts of the shock absorbing buffer 5, so that functional integration can be realized and parts can be reduced.
  • the first mass spring assembly 3 further includes a first fastening nut 32, the first fastening nut 32 is screwed with the first elastic rod 30, and the first mass block 31
  • First fastening nuts 32 are provided on both sides to fix the first mass block 31 to the first elastic rod 30 . That is to say, the top of the first mass block 31 is provided with the first fastening nut 32, the bottom of the first mass block 31 is provided with the first fastening nut 32, each first fastening nut 32 is connected with the first elastic rod 30
  • the thread fits to clamp the first mass block 31 between the two first fastening nuts 32 to realize the positioning installation of the first mass block 31 .
  • the structure is simple. It can be understood that, due to the certain mass of the first fastening nut 32 , when calculating the natural frequency of the first mass-spring assembly 3 , the position and mass of the first fastening nut 32 need to be considered.
  • first fastening nut 32 located below is spaced apart from the connecting part 1, so as to prevent the connecting part 1 from colliding with the first fastening nut 32 when it vibrates and generate noise, and can also limit the vertical deflection of the connecting part 1.
  • the amount of displacement acts as a limit.
  • the lower end of the first elastic rod 30 is inserted into the shock absorbing buffer 5 through the connecting part 1 , the mounting nut 7 is threadedly fitted with the first elastic rod 30 and the nut is installed 7 abuts against the upper surface of the connecting portion 1 to fix the first elastic rod 30 to the connecting portion 1 and realize the fixed installation of the shock absorbing buffer member 5 .
  • the first mass block 31 is located above the mounting nut 7, and the first fastening nuts 32 are arranged on the upper and lower sides of the first mass block 31, and the two first fastening nuts 32 are threaded with the first elastic rod 30 so as to The first mass block 31 is clamped on the first elastic rod 30 , and the lower first fastening nut 32 is spaced apart from the mounting nut 7 .
  • the first elastic rod 30 in order to save costs, only needs to process threads near the installation position of the first mass block 31 and the installation position of the installation nut 7 .
  • the thread of the first elastic rod 30 in order to facilitate precise adjustment of the position of the first mass 31 on the first elastic rod 30 , is selected as a thread with fine teeth and small pitch.
  • the connecting part 1 is provided with a first through hole
  • the second elastic rod 40 is loosely matched with the first through hole. That is to say, in the horizontal direction, the second elastic rod 40 is spaced apart from the inner wall of the first through hole, so that the gap between the second elastic rod 40 and the first through hole can play a role for the second elastic rod 40
  • the limit function in the horizontal direction so that by adjusting the position of the second elastic rod 40 in the first through hole, the position of the entire vibration damping assembly 100 relative to the device main body 200 in the horizontal direction can be adjusted.
  • the second mass spring assembly 4 further includes a second fastening nut 42, the second fastening nut 42 is threadedly fitted with the second elastic rod 40, and the second mass block 41
  • Two fastening nuts 42 are provided on both sides to fix the second mass block 41 to the second elastic rod 40 . That is to say, the second fastening nut 42 is arranged on the top of the second mass block 41, and the second fastening nut 42 is arranged on the bottom of the second mass block 41, and each second fastening nut 42 is connected with the second elastic rod 40
  • the thread fits to clamp the second mass block 41 between the two second fastening nuts 42 to realize the positioning installation of the second mass block 41 .
  • the second elastic rod 40 in order to save costs, only needs to process threads near the installation position of the second mass block 41 .
  • the thread of the second elastic rod 40 in order to facilitate precise adjustment of the position of the second mass 41 on the second elastic rod 40 , is selected as a thread with fine teeth and small pitch.
  • the second fastening nut 42 located below is spaced apart from the connecting part 1 so as to prevent the connecting part 1 from colliding with the second fastening nut 42 when it vibrates. Noise, and the vertical offset of the connection part 1 can also be limited.
  • a gasket is provided between the second fastening nut 42 and the second mass block 41. After fine-tuning the position of the second mass block 41, the second fastening nut 42 and the second mass block 41 can be adjusted. The thickness of the gasket between the mass blocks 41 ensures that the limiting distance between the second fastening nut 42 and the connecting part 1 remains unchanged.
  • the damping assembly 100 further includes a third mass-spring assembly 6, the third mass-spring assembly 6 includes a third elastic rod 60 and a third mass block 61, and the third elastic
  • the rod 60 is installed on the base plate 2
  • the third elastic rod 60 is a solid piece and passes through the connection part 1
  • the third mass block 61 is installed on the third elastic rod 60 .
  • the third elastic rod 60 can provide stiffness in three directions, that is, tension-compression stiffness K Cz and bending stiffness K Cx , K Cy .
  • the third elastic rod 60 is a solid structure, the tension-compression stiffness is obviously greater than Bending stiffness, thus the bending stiffness of the third elastic rod 60 and the mass provided by the third mass block 61 can be used to form a dynamic vibration absorber, when the natural frequency of the third mass spring assembly 6 and the device main body 200 are transmitted to the base When the excitation frequencies on the plate 2 overlap, part of the vibration energy can be transferred to the third mass-spring assembly 6 , so as to achieve the purpose of controlling the vibration of the device main body 200 .
  • the third elastic rod 60 not only provides stiffness, but also distributes the third mass block 61, the third mass block 61 is not an ideal mass point, but a block with distributed mass, the third elastic rod 60 and the third mass block 61
  • the distributed mass characteristic of the mass block 61 has a relatively obvious influence on the calculation accuracy of the natural frequency, so when calculating the natural frequency of the third mass-spring assembly 6, a complete finite element of the third elastic rod 60 and the third mass block 61 can be established model, considering the mass distribution properties of both.
  • the frequency can be fine-tuned by adjusting the position of the third mass 61 on the third elastic rod 60 , after the adjustment is completed, the third mass block 61 is fixed.
  • the vibration damping effect can be improved by arranging the first mass spring assembly 3 , the second mass spring assembly 4 and the third mass spring assembly 6 .
  • At least one of the cross-sections of the first elastic rod 30 and the third elastic rod 60 is formed in a circular shape. That is to say, at least one of the first elastic rod 30 and the third elastic rod 60 is formed into a cylindrical shape.
  • the rigidity is the same, so that the formed dynamic vibration absorber can reduce the specific frequency vibration of the equipment main body 200 in the horizontal direction.
  • the connecting part 1 is provided with a second through hole, and the third elastic rod 60 is in clearance fit with the second through hole. That is to say, in the horizontal direction, the third elastic rod 60 is spaced apart from the inner wall of the second through hole, so that the gap between the third elastic rod 60 and the second through hole can play a role in the third elastic rod 60.
  • the limit function in the horizontal direction so that by adjusting the position of the third elastic rod 60 in the second through hole, the position of the entire damping assembly 100 relative to the equipment main body 200 in the horizontal direction can be adjusted, and the equipment main body can also be limited.
  • the horizontal offset of 200 relative to the shock absorber assembly 100 is provided with a second through hole, and the third elastic rod 60 is in clearance fit with the second through hole. That is to say, in the horizontal direction, the third elastic rod 60 is spaced apart from the inner wall of the second through hole, so that the gap between the third elastic rod 60 and the second through hole can play a role in the third elastic rod 60.
  • the limit function in the horizontal direction so that
  • the third mass spring assembly 6 further includes a third fastening nut 62 , the third fastening nut 62 is screwed with the third elastic rod 60 , and the third mass block 61 Third fastening nuts 62 are provided on both sides of the third mass block 61 to fix the third mass block 61 to the third elastic rod 60 .
  • the third fastening nut 62 is provided above the third mass block 61, and the third fastening nut 62 is provided below the third mass block 61, and each third fastening nut 62 is connected to the third elastic rod 60
  • the thread fits to clamp the third mass block 61 between the two third fastening nuts 62 to realize the positioning installation of the third mass block 61 .
  • fixing the third mass block 61 by two third fastening nuts 62 it is convenient to adjust the position of the third mass block 61 on the third elastic rod 60, and it is convenient to fix the third mass block 61, so that the third mass spring assembly 6
  • the structure is simple. It can be understood that, due to the certain mass of the third fastening nut 62 , when calculating the natural frequency of the third mass-spring assembly 6 , the position and mass of the third fastening nut 62 need to be considered.
  • the third elastic rod 60 in order to save costs, only needs to process threads near the installation position of the third mass block 61 .
  • the thread of the third elastic rod 60 in order to facilitate precise adjustment of the position of the third mass 61 on the third elastic rod 60 , is selected as a thread with fine teeth and small pitch.
  • the upper third fastening nut 62 is spaced apart from the connecting part 1 so as to prevent the connecting part 1 from colliding with the third fastening nut 62 when it vibrates. Noise, and the vertical offset of the connection part 1 can also be limited.
  • a gasket is provided between the third fastening nut 62 and the third mass block 61. After fine-tuning the position of the third mass block 61, the third fastening nut 62 and the third The thickness of the gasket between the mass blocks 61 ensures that the limiting distance between the third fastening nut 62 and the connecting part 1 remains unchanged.
  • the second mass 41 and the third mass 61 are located on both sides of the connection part 1 .
  • the second mass block 41 is located above the connecting portion 1
  • the third mass block 61 is located below the connecting portion 1, so that the second mass spring assembly can be made 4 and the third mass spring assembly 6 have different natural frequencies, so that vibrations of different frequencies can be absorbed, and the vibration damping effect of the vibration damping assembly 100 can be improved. Section 1 displacement.
  • the vibration damping assembly 100 according to a specific embodiment of the present application will be described below with reference to FIG. 1 .
  • the vibration damping assembly 100 includes a connecting part 1, a base plate 2, a vibration damping buffer 5, a first mass spring assembly 3, a second mass spring assembly 4 and a third mass spring assembly.
  • Mass spring assembly6 is provided.
  • the connecting part 1 is provided with a first through hole and a second through hole.
  • the first mass-spring assembly 3 includes a first elastic rod 30, a first mass block 31, and two first fastening nuts 32
  • the second mass-spring assembly 4 includes a second elastic bar 40, a second mass block 41, and two first fastening nuts 32.
  • Two fastening nuts 42 The third mass spring assembly 6 includes a third elastic rod 60 , a third mass block 61 and two third fastening nuts 62 .
  • the shock absorber 5 , the second elastic rod 40 and the third elastic rod 60 are respectively fixed on the base plate 2 , and the shock absorber 5 supports the connection part 1 .
  • the lower end of the first elastic rod 30 is inserted into the shock absorbing buffer 5 through the connecting part 1, the mounting nut 7 is threadedly engaged with the first elastic rod 30 and the mounting nut 7 is abutted against the upper surface of the connecting part 1 to fix the first elastic Rod 30.
  • the first mass block 31 is overlaid on the first elastic rod 30, and the upper and lower sides of the first mass block 31 are provided with first fastening nuts 32, and the first fastening nuts 32 are threadedly matched with the first elastic rod 30 to clamp
  • the first mass block 31 and the first fastening nut 32 located below are spaced apart from the mounting nut 7 .
  • the upper end of the second elastic rod 40 passes through the first through hole, and the second elastic rod 40 is clearance fit with the first through hole.
  • the second mass block 41 is located above the connecting portion 1, the second mass block 41 is sheathed on the second elastic rod 40, the upper and lower sides of the second mass block 41 are provided with second fastening nuts 42, and the second fastening nuts 42 is threadedly engaged with the second elastic rod 40 to clamp the second mass block 41 , and the second fastening nut 42 located below is spaced apart from the connecting part 1 .
  • the second elastic rod 40 is a hollow structure, it can be understood that, because the second elastic rod 40 is a hollow structure, on the one hand, the tension-compression stiffness of the second elastic rod 40 can be reduced, and the quality of the second mass spring assembly 4 can be reduced; On the one hand, the bending rigidity of the second elastic rod 40 is improved, thereby improving the impact resistance of the second elastic rod 40 when it is limited.
  • the second mass spring assembly 4 also provides a function of limiting.
  • the distance between the second elastic rod 40 and the first passing hole can function as a limit in the horizontal plane.
  • the distance between the second fastening nut 42 and the connecting part 1 can serve as a vertical (+Z direction) limiting function.
  • the upper end of the third elastic rod 60 passes through the second through hole, and the third elastic rod 60 is clearance fit with the second through hole.
  • the third mass block 61 is located below the connecting portion 1, the third mass block 61 is sheathed on the third elastic rod 60, the upper and lower sides of the third mass block 61 are provided with third fastening nuts 62, the third fastening nuts 62 is threadedly engaged with the third elastic rod 60 to clamp the third mass block 61 , and the third fastening nut 62 located above is spaced apart from the connection part 1 .
  • the third mass spring assembly 6 also provides a function of limiting.
  • the distance between the third elastic rod 60 and the second passing hole can function as a limit in the horizontal plane.
  • the distance between the third fastening nut 62 and the connecting part 1 can serve as a vertical (-Z direction) limiting function.
  • the first mass spring assembly 3 (the first elastic rod 30, the first mass block 31 and the first fastening nut 32) reduces is the vibration (horizontal direction) of the connecting part 1
  • the first What the second mass spring assembly 4 (the second elastic bar 40, the second mass block 41 and the second fastening nut 42) reduces is that the base plate 2 vibrates (vertical direction)
  • the third mass spring assembly 6 (the third elastic bar 60 , the third mass block 61 and the third fastening nut 62) reduce the vibration (horizontal direction) of the base plate 2, because the first mass spring assembly 3 and the third mass spring assembly 6 can all reduce horizontal vibration, and only There is the second mass spring assembly 4 to reduce vertical vibration.
  • the horizontal-to-vertical ratio of the selected vibration-damping buffer 5 should be a little larger (that is, the vertical direction of the vibration-damping buffer 5).
  • the stiffness should be less than the transverse stiffness), so as to achieve the purpose of three-way vibration balance control.
  • the installation method of the damping assembly 100 according to the embodiment of the present application is as follows:
  • vibration damping material 5 and the base plate 2 are attached and fixed.
  • the second elastic rod 40 and the third elastic rod 60 are installed and fixed on the base plate 2 .
  • the third mass block 61 is fixed on the third elastic rod 60 by using the third fastening nut 62 .
  • the connecting part 1 passes through the second elastic rod 40 and the third elastic rod 60 and is placed on the shock-absorbing buffer member 5 .
  • the first elastic rod 30 is passed through the connecting part 1 , screwed into the shock-absorbing buffer member 5 , and the first elastic rod 30 is fixed to the connecting part 1 by using the mounting nut 7 .
  • the first mass block 31 is fixed on the first elastic rod 30 by using the first fastening nut 32 .
  • the second mass block 41 is fixed on the second elastic rod 40 by using the second fastening nut 42 .
  • the flexural stiffness and tension-compression stiffness of the elastic rod are combined with the mass block to form a three-way vibration absorber, and the installation directions of the three-way vibration absorbers are the same, which greatly saves space.
  • the vibration damping assembly 100 also has the following advantages: spatial integration: the vibration damping buffer 5, the first mass spring assembly 3 to the third mass spring assembly 6, the horizontal limit and the vertical limit are all integrated in the Near the machine feet, reduce the number of parts and save space.
  • Functional integration functional integration of parts, reducing the number of parts, including: the first elastic rod 30 is integrated with the mounting bolts of the shock absorbing buffer 5, and the second fastening nut 42 and the third fastening nut 62 integrate fastening and limiting functions , the second elastic rod 40 and the third elastic rod 60 provide the rigidity function and the limit function, and the connecting part 1 integrates the installation interface function and the limit function.
  • each mass spring component can achieve a vibration damping effect of not less than 3dB on a specific frequency vibration, and can effectively suppress the specific frequency vibration transmitted to the base plate 2 .
  • the ratio of lateral stiffness and vertical stiffness of the damping buffer 5 generally, the ratio of lateral and vertical stiffness should be greater than 1.5
  • the vertical vibration damping effect is improved, and combined with the three-way vibration absorption effect, balanced control of three-way vibration is achieved.
  • the vibration equipment 1000 includes: the equipment main body 200 and the vibration damping assembly 100, the vibration damping assembly 100 is the vibration damping assembly 100 according to the above-mentioned embodiment of the application, and the connecting part 1 is connected to the equipment main body 200.
  • the vibration damping assembly 100 by setting the vibration damping assembly 100, the vibration damping effect in three directions can be realized, forming a three-way vibration absorption, and the vibration damping effect is good. Furthermore, since the first elastic rod 30 and the second elastic rod 40 extend in the same direction, the installation direction of the first mass spring assembly 3 and the second mass spring assembly 4 is the same, which can greatly save space.
  • the multiple connecting parts 1 there are multiple connecting parts 1 , and the multiple connecting parts 1 are connected to the device main body 200 .
  • the base plates 2 of multiple damping assemblies 100 can be integrated into one plate body. Therefore, not only the vibration damping effect is improved, but also the installation is facilitated.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

La présente invention concerne un ensemble d'amortissement (100) et un dispositif de vibration (1000) pourvu de celui-ci. L'ensemble d'amortissement (100) comprend une partie de raccordement (1), une plaque de base (2), un premier composant de ressort de masse (3) et un second composant de ressort de masse (4). La partie de raccordement (1) est montée sur un corps de dispositif (200), et la plaque de base (2) est située au-dessous de la partie de raccordement (1) ; le premier composant de ressort de masse (3) comprend une première tige élastique (30) et un premier bloc de masse (31), la première tige élastique (30) est disposée sur la plaque de base (2), la première tige élastique (30) est pleine, et le premier bloc de masse (31) est monté sur la première tige élastique (30) ; le second composant de ressort de masse (4) comprend une seconde tige élastique (40) et un second bloc de masse (41), la seconde tige élastique (40) est montée sur la plaque de base (2), au moins une partie de la seconde tige élastique (40) est creuse, et le second bloc de masse (41) est monté sur la seconde tige élastique (40) ; à la fois la première tige élastique (30) et la seconde tige élastique (40) passent à travers la partie de raccordement (1), et la première tige élastique (30) et/ou la seconde tige élastique (40) sont fixées à la partie de raccordement (1).
PCT/CN2022/107450 2021-10-29 2022-07-22 Ensemble d'amortissement et dispositif de vibration pourvu de celui-ci WO2023071321A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN202111272804.3 2021-10-29
CN202111272804.3A CN116066501A (zh) 2021-10-29 2021-10-29 减振总成及具有其的振动设备
CN202122640242.5U CN216111886U (zh) 2021-10-29 2021-10-29 减振总成及具有其的振动设备
CN202122640242.5 2021-10-29

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WO2023071321A1 true WO2023071321A1 (fr) 2023-05-04

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