Vibration damping assembly and vibration device having the same

Abstract

The application discloses a damping assembly and a vibration device with the same. The damping assembly comprises a connecting part, a base plate, a first mass-spring assembly and a second mass-spring assembly. The connecting part is mounted to a device body. The base plate is located below the connecting part. The first mass-spring assembly comprises a first elastic rod and a first mass block. The first elastic rod is arranged on the base plate and is a solid member. The first mass block is mounted to the first elastic rod. The second mass-spring assembly comprises a second elastic rod and a second mass block. The second elastic rod is mounted to the base plate. At least a part of the second elastic rod 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. At least one of the first elastic rod and the second elastic rod is fixed to the connecting part. According to the damping assembly of the embodiment of the application, three-direction vibration absorption is formed, the damping effect is good, and the space can be greatly saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of shock absorbers, in particular to a shock absorbing assembly and a vibration device with the same. BACKGROUND

[0002] Electrical appliances will generate some vibrations during operation or transportation. If no damping treatment is performed, some noise will be generated due to the vibrations or the service life of the electrical appliances will be affected due to the vibrations. In the related art, a vibration absorber is used for damping. Vibrations are three-directional, but the damping effect is limited because the conventional vibration absorber generally uses one-way vibration absorption. SUMMARY

[0003] The present application aims to at least solve one of the problems in the prior art. To this end, the present application provides a shock absorbing assembly, which forms three-directional vibration absorption and has good damping effect.

[0004] The present application also provides a vibration device with the shock absorbing assembly.

[0005] The shock absorbing assembly according to the embodiments of the present application comprises: a connecting portion, which is mounted to a device body; a base plate, which is located below the connecting portion; a first mass-spring assembly, which comprises 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 member, and the first mass block is mounted to the first elastic rod; and a second mass-spring assembly, which comprises a second elastic rod and a second mass block, the second elastic rod is mounted to the base plate, at least a portion of the second elastic rod 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 portion, and at least one of the first elastic rod and the second elastic rod is fixed to the connecting portion.

[0006] The shock absorbing assembly according to the embodiments of the present application can achieve three-directional damping effect by arranging the first mass-spring assembly and the second mass-spring assembly, forms three-directional vibration absorption, and has good damping effect. In addition, the first mass-spring assembly and the second mass-spring assembly have the same mounting direction because the first elastic rod and the second elastic rod have the same extension direction, so that the space can be greatly saved.

[0007] In some embodiments of the present application, the shock absorbing assembly further comprises a shock absorbing buffer, which is arranged on the base plate and supports the connecting portion, one end of the first elastic rod is connected to the shock absorbing buffer, and the other end of the first elastic rod passes through the connecting portion and is provided with the first mass block.

[0008] In some embodiments of the present application, the first elastic rod is fixed to the connecting portion.

[0009] In some embodiments of the present application, the connecting portion is provided with a first through hole, and the second elastic rod is in clearance fit with the first through hole.

[0010] In some embodiments of the present application, the vibration damping assembly further comprises a third mass-spring assembly, the third mass-spring assembly comprising a third elastic rod and a third mass block, the third elastic rod being mounted to the base plate, the third elastic rod being a solid member and the third elastic rod passing through the connecting portion, and the third mass block being mounted to the third elastic rod.

[0011] In some embodiments of the present application, at least one of the cross section of the first elastic rod and the cross section of the third elastic rod is circular.

[0012] In some embodiments of the present application, the connecting portion is provided with a second through hole, and the third elastic rod is in clearance fit with the second through hole.

[0013] In some embodiments of the present application, the second mass block and the third mass block are located on two sides of the connecting portion.

[0014] In some embodiments of the present application, the first mass-spring assembly further comprises a first fastening nut, the first fastening nut being in threaded fit with the first elastic rod, and the first mass block being provided with the first fastening nut on both sides thereof to fix the first mass block to the first elastic rod.

[0015] In some embodiments of the present application, the lower first fastening nut is spaced apart from the connecting portion.

[0016] In some embodiments of the present application, the second mass-spring assembly further comprises a second fastening nut, the second fastening nut being in threaded fit with the second elastic rod, and the second mass block being provided with the second fastening nut on both sides thereof to fix the second mass block to the second elastic rod.

[0017] The vibration device according to the embodiments of the present application comprises: a device main body; a vibration damping assembly, the vibration damping assembly being the vibration damping assembly according to any one of the above embodiments of the present application, and the connecting portion being connected to the device main body.

[0018] The vibration device according to the embodiments of the present application can achieve three-direction vibration damping effect by setting the vibration damping assembly, forming three-direction vibration absorption, and having good vibration damping effect. In addition, the first mass-spring assembly and the second mass-spring assembly have the same installation direction due to the same extension direction of the first elastic rod and the second elastic rod, so that the space can be greatly saved.

[0019] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following and the attendant drawings or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the accompanying drawings.

[0021] Figure 1 schematic view of a vibration device provided with a vibration damping assembly according to an embodiment of the present application.

[0022] Figure 2 schematic view of a vibration device provided with a vibration damping assembly according to an embodiment of the present application.

[0023] REFERENCE NUMERALS

[0024] vibration device 1000,

[0025] vibration damping assembly 100, device body 200,

[0026] connecting portion 1,

[0027] base plate 2,

[0028] first mass-spring assembly 3, first elastic rod 30, first mass 31, first fastening nut 32,

[0029] second mass-spring assembly 4, second elastic rod 40, second mass 41, second fastening nut 42,

[0030] vibration damping cushion 5,

[0031] third mass-spring assembly 6, third elastic rod 60, third mass 61, third fastening nut 62,

[0032] mounting nut 7. DETAILED DESCRIPTION

[0033] Embodiments of the present application are described in detail below with reference to the attached drawings, wherein the same or like reference numerals and characters refer to the same or like components throughout the drawings. The embodiments described below are exemplary, and are merely intended to explain the present application, and are not to be understood as limiting the present application.

[0034] In the description of the present application, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the features defined as "first" and "second" can be explicitly or implicitly included one or more features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0035] In the description of the present application, it needs to be understood that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] The following refers to Figures 1-2 The vibration damping assembly 100 according to the embodiment of the present application is described, wherein the vibration damping assembly 100 is mounted to the equipment body 200 to reduce the vibration of the equipment body 200, and it can be understood that the equipment body 200 can be any equipment generating vibration, such as an air conditioner outdoor unit, etc.

[0037] As Figure 1 shown, the vibration damping assembly 100 according to the embodiment of the present application comprises 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 mounted to the equipment body 200. The connecting part 1 can be connected to any position of the equipment body 200, for example, the connecting part 1 can be connected to the foot plate of the equipment body 200, and the vibration generated by the equipment body 200 can be transmitted to the connecting part 1. In some examples of the present application, the connecting part 1 and the foot plate of the equipment body 200 are integrally formed, that is, the connecting part 1 is defined by using part of the structure of the equipment body 200, so that the cost can be saved and the types of parts can be reduced.

[0038] The base plate 2 is located below the connecting part 1, and it needs to be noted that in the description of the present application, the terms "upper" and "lower" are relative positional relationships, indicating that the base plate 2 is located on the side of the connecting part 1 away from the equipment body 200, and indicating that the base plate 2 is placed on a placement surface.

[0039] The first mass-spring assembly 3 comprises a first elastic rod 30 and a first mass 31, the first elastic rod 30 is arranged on the base plate 2, the first elastic rod 30 is a solid member, and the first mass 31 is mounted to the first elastic rod 30. It can be understood that the first elastic rod 30 can provide stiffness in three directions, i.e. tensile-compressive stiffness K Az and bending stiffness K Ax , K Ay Since the first elastic rod 30 is a solid structure, the tensile-compressive stiffness is obviously greater than the bending stiffness, and thus the dynamic vibration absorber can be formed by utilizing the bending stiffness of the first elastic rod 30 and the mass provided by the first mass 31. When the natural frequency of the first mass-spring assembly 3 overlaps with the excitation frequency transmitted by the equipment body 200 to the connecting part 1, 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 equipment body 200.

[0040] It should be noted that since the first elastic rod 30 not only provides stiffness but also distributes the first mass 31, the first mass 31 is not an ideal mass point but a mass block with distributed mass. The distributed mass characteristics of the first elastic rod 30 and the first mass 31 have a relatively obvious influence on the calculation accuracy of the natural frequency, and thus when calculating the natural frequency of the first mass-spring assembly 3, a complete finite element model of the first elastic rod 30 and the first mass 31 can be established to consider the mass distribution characteristics of both. If it is found in actual measurement that the natural frequency of the first mass-spring assembly 3 composed of the first elastic rod 30 and the first mass 31 deviates from the design, the frequency can be fine-tuned by adjusting the position of the first mass 31 on the first elastic rod 30, and after adjustment, the first mass 31 is fixed.

[0041] The second mass-spring assembly 4 comprises a second elastic rod 40 and a second mass 41, the second elastic rod 40 is mounted to the base plate 2, at least a part of the second elastic rod 40 is formed as a hollow structure, the second mass 41 is mounted to the second elastic rod 40, and the first elastic rod 30 and the second elastic rod 40 both pass through the connecting part 1, and at least one of the first elastic rod 30 and the second elastic rod 40 is fixed to the connecting part 1. It can be understood that the second elastic rod 40 can provide stiffness in three directions, i.e. tensile-compressive stiffness K Bz and bending stiffness K Bx , K BySince at least a part of the second elastic rod 40 is formed as a hollow structure, the tensile and compressive stiffness of the second elastic rod 40 can be reduced and the bending stiffness of the second elastic rod 40 can be increased, so that the dynamic vibration absorber can be formed by the tensile and compressive stiffness of the second elastic rod 40 and the mass provided by the second mass block 41, and when the natural frequency of the second mass-spring assembly 4 overlaps with the excitation frequency transmitted by the equipment body 200 to the connecting part 1 and the base plate 2, a part of the vibration energy can be transferred to the second mass-spring assembly 4, so as to achieve the purpose of controlling the vibration of the equipment body 200.

[0042] It should be noted that if it is found in actual measurement that 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, the frequency can be fine-tuned by adjusting the position of the second mass block 41 on the second elastic rod 40, and after adjustment, the second mass block 41 is fixed.

[0043] For the convenience of description, 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.

[0044] Specifically, according to the vibration reduction assembly 100 of the embodiment of the present application, the dynamic vibration absorber can be formed by the bending stiffness of the first elastic rod 30 and the mass provided by the first mass block 31, and the dynamic vibration absorber can be formed by the tensile and compressive stiffness of the second elastic rod 40 and the mass provided by the second mass block 41, so that the first mass-spring assembly 3 and the second mass-spring assembly 4 can reduce the frequency vibration in different directions, that is, the first mass-spring assembly 3 can reduce the characteristic frequency vibration of the equipment body 200 in the horizontal direction (X-axis direction and Y-axis direction), and the second mass-spring assembly 4 can reduce the characteristic frequency vibration of the equipment body 200 in the vertical direction (Z-axis direction).

[0045] According to the vibration reduction assembly 100 of the embodiment of the present application, by arranging the first mass-spring assembly 3 and the second mass-spring assembly 4, the vibration reduction effect in three directions can be achieved, and three-direction vibration absorption is formed, and the vibration reduction effect is good. Since the extension directions of the first elastic rod 30 and the second elastic rod 40 are the same, the mounting directions of the first mass-spring assembly 3 and the second mass-spring assembly 4 are the same, so that the space can be greatly saved.

[0046] As Figure 1As shown in the figure, in some embodiments of the present application, the damping assembly 100 further comprises a damping buffer 5 arranged on the base plate 2 and supporting the connecting part 1, one end of the first elastic rod 30 is connected to the damping buffer 5, and the other end of the first elastic rod 30 passes through the connecting part 1 and is provided with the first mass block 31. That is, the damping buffer 5 can play a damping buffering role, and the vibration transmitted to the connecting part 1 can be partially buffered by the damping buffer 5 and then transmitted to the base plate 2, so that the damping effect of the damping assembly 100 can be further improved. Optionally, the damping buffer 5 can be a rubber material piece, a metal elastic piece, etc. In some examples of the present application, the connecting part 1 is provided with a mounting hole for mounting the damping buffer 5, so as to facilitate the positioning and installation of the damping buffer 5.

[0047] In some examples of the present application, as shown in the figure, Figure 1 The first elastic rod 30 is fixed to the connecting part 1. Thus, displacement of the damping assembly 100 due to vibration can be avoided, and the vibration capacity of the connecting part 1 can be ensured to be transmitted to the first mass spring assembly 3 to achieve the purpose of damping. Further, the first elastic rod 30 can be fixed to the connecting part 1 by the mounting nut 7, the mounting nut 7 is threadedly connected with the first elastic rod 30, and the mounting nut 7 abuts against the connecting part 1. That is, the first elastic rod 30 constitutes a mounting bolt of the damping buffer 5, so that functional integration can be achieved and the number of parts can be reduced.

[0048] In some embodiments of the present application, as shown in the figure, Figure 1 The first mass spring assembly 3 further comprises a first fastening nut 32, the first fastening nut 32 is threadedly connected with the first elastic rod 30, and the first mass block 31 is provided with the first fastening nut 32 on both sides to fix the first mass block 31 to the first elastic rod 30. That is, the first mass block 31 is provided with the first fastening nut 32 above, and the first mass block 31 is provided with the first fastening nut 32 below, each first fastening nut 32 is threadedly connected with the first elastic rod 30 to clamp the first mass block 31 between the two first fastening nuts 32, and the positioning and installation of the first mass block 31 are achieved. Thus, the first mass block 31 is fixed by the two first fastening nuts 32, which facilitates the adjustment of the position of the first mass block 31 on the first elastic rod 30 and the fixation of the first mass block 31, and the structure of the first mass spring assembly 3 is simple. It can be understood that, since the first fastening nut 32 has a certain mass, the position and mass of the first fastening nut 32 need to be considered when calculating the natural frequency of the first mass spring assembly 3.

[0049] Further, the lower first fastening nut 32 is arranged in a spaced manner with the connecting part 1. Thus, the collision between the connecting part 1 and the first fastening nut 32 when the connecting part 1 vibrates can be avoided to generate noise, and the vertical displacement of the connecting part 1 can be limited to play a limiting role.

[0050] In some specific examples of the present application, as shown in Figure 1 The lower end of the first elastic rod 30 is inserted into the damping buffer 5 through the connecting part 1, the mounting nut 7 is threadedly connected with the first elastic rod 30 and abuts against the upper surface of the connecting part 1 to fix the first elastic rod 30 with the connecting part 1, and the fixed installation of the damping buffer 5 is achieved. The first mass block 31 is located above the mounting nut 7, and the first mass block 31 is provided with first fastening nuts 32 on both upper and lower sides, which are threadedly connected with the first elastic rod 30 to clamp the first mass block 31 on the first elastic rod 30, and the lower first fastening nut 32 is spaced apart from the mounting nut 7.

[0051] In some examples of the present application, in order to save costs, the first elastic rod 30 only needs to be threaded near the installation position of the first mass block 31 and the installation position of the mounting nut 7. In some specific examples of the present application, in order to facilitate the accurate adjustment of the position of the first mass block 31 on the first elastic rod 30, the thread of the first elastic rod 30 is selected to be a fine tooth small pitch thread.

[0052] In some embodiments of the present application, as shown in Figure 1 The connecting part 1 is provided with a first through hole, and the second elastic rod 40 is gap-connected with the first through hole. That is, 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 limit the position of the second elastic rod 40 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 damping assembly 100 relative to the equipment body 200 in the horizontal direction can be adjusted.

[0053] It can be understood that during the operation or handling of the equipment body 200, due to vibration, a certain offset may occur between the equipment body 200 and the damping assembly 100. According to the damping assembly 100 of the embodiment of the present application, by gap-connecting the second elastic rod 40 and the first through hole, the horizontal offset of the equipment body 200 relative to the damping assembly 100 can also be limited.

[0054] In some embodiments of the present application, as shown in Figure 1As shown, the second mass spring assembly 4 further comprises a second fastening nut 42, the second fastening nut 42 is threadedly matched with the second elastic rod 40, and the second mass block 41 is provided with the second fastening nut 42 on both sides to fix the second mass block 41 to the second elastic rod 40. That is, the second mass block 41 is provided with the second fastening nut 42 above, and the second mass block 41 is provided with the second fastening nut 42 below, each second fastening nut 42 is threadedly matched with the second elastic rod 40 to clamp the second mass block 41 between the two second fastening nuts 42, realizing the positioning installation of the second mass block 41. Thus, the second mass block 41 is fixed by the two second fastening nuts 42, which is convenient for adjusting the position of the second mass block 41 on the second elastic rod 40, and is convenient for fixing the second mass block 41, so that the structure of the second mass spring assembly 4 is simple. It can be understood that, since the second fastening nut 42 has a certain mass, when calculating the natural frequency of the second mass spring assembly 4, the position and mass of the second fastening nut 42 need to be considered.

[0055] In some examples of the present application, in order to save costs, the second elastic rod 40 only needs to be threaded near the installation position of the second mass block 41. In some specific examples of the present application, in order to facilitate accurate adjustment of the position of the second mass block 41 on the second elastic rod 40, the threads of the second elastic rod 40 are selected to be fine-pitch threads.

[0056] As shown in the drawings, Figure 1 In some embodiments of the present application, the lower second fastening nut 42 is spaced apart from the connecting part 1, so that noise can be avoided when the connecting part 1 vibrates and collides with the second fastening nut 42, and the vertical offset of the connecting part 1 can also be limited.

[0057] In some examples of the present application, a gasket is provided between the second fastening nut 42 and the second mass block 41, and after fine adjustment of the position of the second mass block 41, the thickness of the gasket between the second fastening nut 42 and the second mass block 41 can be adjusted to ensure that the limiting distance between the second fastening nut 42 and the connecting part 1 remains unchanged.

[0058] According to some embodiments of the present application, as shown in the drawings, Figure 1 The vibration reduction assembly 100 further comprises a third mass spring assembly 6, the third mass spring assembly 6 comprises a third elastic rod 60 and a third mass block 61, the third elastic rod 60 is installed to the base plate 2, the third elastic rod 60 is a solid piece and passes through the connecting part 1, and the third mass block 61 is installed to the third elastic rod 60. It can be understood that the third elastic rod 60 can provide stiffness in three directions, i.e. tensile-compressive stiffness K Cz and bending stiffness K Cx , K CySince the third elastic rod 60 is a solid structure, the tensile and compressive stiffness is obviously greater than the bending stiffness, and thus the dynamic vibration absorber can be formed by using the bending stiffness of the third elastic rod 60 and the mass provided by the third mass block 61, and when the natural frequency of the third mass spring assembly 6 overlaps with the excitation frequency transmitted by the equipment body 200 to the base plate 2, 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 equipment body 200.

[0059] It should be noted that since 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, and the distributed mass characteristics of the third elastic rod 60 and the third mass block 61 have a relatively obvious influence on the calculation accuracy of the natural frequency, and thus when calculating the natural frequency of the third mass spring assembly 6, a complete finite element model of the third elastic rod 60 and the third mass block 61 can be established to consider the mass distribution characteristics of both. If it is found through actual measurement that the natural frequency of the third mass spring assembly 6 composed of the third elastic rod 60 and the third mass block 61 deviates from the design, the frequency can be fine-tuned by adjusting the position of the third mass block 61 in the third elastic rod 60, and after adjustment, the third mass block 61 is fixed.

[0060] According to the vibration reduction assembly 100 of the embodiment of the present application, by arranging the first mass spring assembly 3, the second mass spring assembly 4 and the third mass spring assembly 6, the vibration reduction effect can be improved.

[0061] In some embodiments of the present application, at least one of the cross section of the first elastic rod 30 and the cross section of the third elastic rod 60 is formed in a circular shape. That is, at least one of the first elastic rod 30 and the third elastic rod 60 is formed in a cylindrical shape, and when the first elastic rod 30 and / or the third elastic rod 60 is a cylindrical rod, the two bending stiffnesses in the horizontal direction are the same, and thus the dynamic vibration absorber formed thereby can reduce the vibration of the equipment body 200 at a specific frequency in the horizontal direction.

[0062] In some embodiments of the present application, as shown in Figure 1 The connecting part 1 is provided with a second through hole, and the third elastic rod 60 is gap-fitted with the second through hole. That is, in the horizontal direction, the third elastic rod 60 is arranged in a spaced manner with the inner wall of the second through hole, and thus the gap between the third elastic rod 60 and the second through hole can limit the third elastic rod 60 in the horizontal direction, and thus by adjusting the position of the third elastic rod 60 in the second through hole, the position of the entire vibration reduction assembly 100 relative to the equipment body 200 in the horizontal direction can be adjusted, and the horizontal offset amount of the equipment body 200 relative to the vibration reduction assembly 100 can also be limited.

[0063] In some embodiments of the present application, as shown in Figure 1As shown, the third mass spring assembly 6 further comprises a third fastening nut 62, the third fastening nut 62 is threadedly matched with the third elastic rod 60, and the two sides of the third mass block 61 are provided with the third fastening nut 62 to fix the third mass block 61 to the third elastic rod 60. That is, the upper side of the third mass block 61 is provided with the third fastening nut 62, and the lower side of the third mass block 61 is provided with the third fastening nut 62, each third fastening nut 62 is threadedly matched with the third elastic rod 60 to clamp the third mass block 61 between the two third fastening nuts 62, and the positioning installation of the third mass block 61 is realized. Thus, the third mass block 61 is fixed by the two third fastening nuts 62, the position of the third mass block 61 on the third elastic rod 60 is convenient to adjust, and the third mass block 61 is convenient to fix, so that the structure of the third mass spring assembly 6 is simple. It can be understood that, since the third fastening nut 62 has a certain mass, 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.

[0064] In some examples of the present application, in order to save costs, the third elastic rod 60 only needs to be threaded near the installation position of the third mass block 61. In some specific examples of the present application, in order to facilitate the accurate adjustment of the position of the third mass block 61 on the third elastic rod 60, the thread of the third elastic rod 60 is selected to be a fine tooth small pitch thread.

[0065] As shown in the drawings, Figure 1 In some embodiments of the present application, the upper third fastening nut 62 is spaced apart from the connecting part 1, so that the collision between the connecting part 1 and the third fastening nut 62 when the connecting part 1 vibrates can be avoided to generate noise, and the vertical displacement of the connecting part 1 can also be limited.

[0066] In some examples of the present application, a gasket is arranged between the third fastening nut 62 and the third mass block 61, and after the position of the third mass block 61 is finely adjusted, the thickness of the gasket between the third fastening nut 62 and the third mass block 61 can be adjusted to ensure that the limiting distance between the third fastening nut 62 and the connecting part 1 remains unchanged.

[0067] As shown in the drawings, Figure 1 In some embodiments of the present application, the second mass block 41 and the third mass block 61 are located on the two sides of the connecting part 1. In the example shown in the drawings, Figure 1 The second mass block 41 is located above the connecting part 1, and the third mass block 61 is located below the connecting part 1, so that by arranging the mass blocks on the two sides, the natural frequencies of the second mass spring assembly 4 and the third mass spring assembly 6 can be different, thereby absorbing vibrations of different frequencies to improve the damping effect of the damping assembly 100, and also providing uniform limiting on the two sides of the connecting part 1 to limit the displacement of the connecting part 1.

[0068] The following will be describedFigure 1 A vibration damping assembly 100 according to a specific embodiment of the present invention is described.

[0069] like Figure 1 As shown, the vibration damping assembly 100 according to an embodiment of the present invention includes a connecting portion 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 6. The connecting portion 1 is provided with a first through hole and a second through hole.

[0070] 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 rod 40, a second mass block 41, and two second 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.

[0071] The vibration damping buffer 5, the second elastic rod 40 and the third elastic rod 60 are respectively fixed on the base plate 2, and the vibration damping buffer 5 supports the connecting part 1.

[0072] The lower end of the first elastic rod 30 passes through the connecting part 1 and is inserted into the vibration damping buffer 5. The mounting nut 7 is threadedly engaged with the first elastic rod 30 and abuts against the upper surface of the connecting part 1 to fix the first elastic rod 30. The first mass block 31 is sleeved on the first elastic rod 30. The first fastening nut 32 is provided on both the upper and lower sides of the first mass block 31. The first fastening nut 32 is threadedly engaged with the first elastic rod 30 to clamp the first mass block 31. The first fastening nut 32 located at the lower end is spaced apart from the mounting nut 7.

[0073] The upper end of the second elastic rod 40 passes through the first through hole, and the second elastic rod 40 and the first through hole are in clearance fit. The second mass block 41 is located above the connecting part 1, and the second mass block 41 is sleeved on the second elastic rod 40. The second fastening nut 42 is provided on both the upper and lower sides of the second mass block 41. The second fastening nut 42 is threadedly engaged with the second elastic rod 40 to clamp the second mass block 41. The second fastening nut 42 located at the lower end is spaced apart from the connecting part 1.

[0074] The second elastic rod 40 is a hollow structure. It can be understood that, since the second elastic rod 40 is a hollow structure, on the one hand, the tensile and compressive stiffness of the second elastic rod 40 can be reduced, and the mass of the second mass spring assembly 4 can be reduced; on the other hand, the bending stiffness of the second elastic rod 40 is increased, thereby improving the impact resistance of the second elastic rod 40 when it is in a limiting position.

[0075] It can be understood that the second mass spring assembly 4 provides a limiting function in addition to the dynamic vibration absorption function. The spacing between the second elastic rod 40 and the first through hole can play a limiting role in the horizontal plane. The spacing between the second fastening nut 42 and the connecting part 1 can play a limiting role in the vertical (+Z direction).

[0076] The upper end of the third elastic rod 60 passes through the second through hole, and the third elastic rod 60 and the second through hole are clearance fitted. The third mass block 61 is located below the connecting part 1, the third mass block 61 is sleeved on the third elastic rod 60, and the third mass block 61 is provided with third fastening nuts 62 on the upper and lower sides, the third fastening nuts 62 are in threaded cooperation with the third elastic rod 60 to clamp the third mass block 61, and the third fastening nut 62 located on the upper side is spaced apart from the connecting part 1.

[0077] It can be understood that the third mass spring assembly 6 provides a limiting function in addition to the dynamic vibration absorption function. The spacing between the third elastic rod 60 and the second through hole can play a limiting role in the horizontal plane. The spacing between the third fastening nut 62 and the connecting part 1 can play a limiting role in the vertical (-Z direction).

[0078] It should be noted that in the present application, the first mass spring assembly 3 (the first elastic rod 30, the first mass block 31 and the first fastening nut 32) reduces the vibration (horizontal direction) of the connecting part 1, the second mass spring assembly 4 (the second elastic rod 40, the second mass block 41 and the second fastening nut 42) reduces the vibration (vertical direction) of the base plate 2, and the third mass spring assembly 6 (the third elastic rod 60, the third mass block 61 and the third fastening nut 62) reduces the vibration (horizontal direction) of the base plate 2. Since the first mass spring assembly 3 and the third mass spring assembly 6 can reduce horizontal vibration, and only the second mass spring assembly 4 can reduce vertical vibration, in order to compensate for the control ability of vertical vibration, in the vibration reduction design, the transverse-to-vertical ratio of the selected vibration reduction buffer 5 is preferably larger (i.e. the vertical stiffness of the vibration reduction buffer 5 is preferably smaller than the transverse stiffness), so as to achieve the purpose of balanced control of three-dimensional vibration.

[0079] The installation mode of the vibration reduction assembly 100 according to the embodiment of the present application is as follows:

[0080] First, the positioning and adjustment of the vibration reduction buffer 5, the second elastic rod 40 and the third elastic rod 60 are performed, and after the positions are determined, the installation positions of the vibration reduction buffer 5, the second elastic rod 40 and the third elastic rod 60 are marked.

[0081] Then, the vibration reduction buffer 5 and the base plate 2 are installed and fixed.

[0082] Then, the second elastic rod 40 and the third elastic rod 60 are installed and fixed on the base plate 2.

[0083] Then, the third mass 61 is fixed on the third elastic rod 60 by the third fastening nut 62.

[0084] Then, the connecting part 1 is placed on the damping buffer 5 through the second elastic rod 40 and the third elastic rod 60.

[0085] Then, the first elastic rod 30 is screwed into the damping buffer 5 through the connecting part 1, and the first elastic rod 30 is fixed with the connecting part 1 by the mounting nut 7.

[0086] Then, the first mass 31 is fixed on the first elastic rod 30 by the first fastening nut 32.

[0087] Then, the second mass 41 is fixed on the second elastic rod 40 by the second fastening nut 42.

[0088] Finally, the natural frequency test of the vibration absorber is performed, according to the test results, the positions of the masses on the corresponding elastic rods are fine-tuned, after the adjustment is completed, the gasket thickness between the second fastening nut 42 and the second mass 41 and the third fastening nut 62 and the third mass 61 is adjusted, so that the vertical spacing of the second fastening nut 42, the third fastening nut 62 and the connecting part 1 meets the requirements.

[0089] According to the damping assembly 100 of the embodiment of the present application, the bending stiffness and the tension-compression stiffness of the elastic rods are combined with the masses to form three-way vibration absorption, and the three-way vibration absorbers are installed in the same direction, which greatly saves space.

[0090] The damping assembly 100 of the embodiment of the present application also has the following advantages: space integration: the damping buffer 5, the first mass spring assembly 3 to the third mass spring assembly 6, the horizontal limit and the vertical limit are integrated near the equipment feet, which reduces the number of parts and saves space.

[0091] Functional integration: the functions of the parts are integrated, the number of parts is reduced, including: the mounting bolt function of the first elastic rod 30 and the damping buffer 5 is integrated, the second fastening nut 42 and the third fastening nut 62 are integrated with the fastening and limiting functions, the second elastic rod 40 and the third elastic rod 60 provide stiffness function and limiting function, and the connecting part 1 integrates the installation interface function and the limiting function.

[0092] Effect integration: each mass spring assembly can achieve a damping effect of not less than 3dB on a specific frequency vibration, which can effectively suppress the specific frequency vibration transmitted to the base plate 2. At the same time, by reasonably designing the ratio of the lateral stiffness and the vertical stiffness of the damping buffer 5 (generally, the ratio of the lateral stiffness and the vertical stiffness should be greater than 1.5), the vertical damping effect is improved, combined with the three-way vibration absorption effect, balanced control of three-way vibration is achieved.

[0093] The vibration device 1000 according to the embodiment of the present application comprises a device main body 200 and a damping assembly 100, the damping assembly 100 is the damping assembly 100 according to the above-mentioned embodiment of the present application, and the connecting part 1 is connected to the device main body 200.

[0094] The vibration device 1000 according to the embodiment of the present application can realize the damping effect in three directions by arranging the damping assembly 100, three-way vibration absorption is formed, and the damping effect is good. In addition, the mounting directions of the first mass-spring assembly 3 and the second mass-spring assembly 4 are the same due to the same extension directions of the first elastic rod 30 and the second elastic rod 40, and the space can be greatly saved.

[0095] In some examples of the present application, the connecting part 1 is a plurality of connecting parts 1 connected to the device main body 200. The base plates 2 of the plurality of damping assemblies 100 can be integrated into one plate body. Thus, not only the damping effect is improved, but also the installation is facilitated.

[0096] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0097] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A vibration reduction assembly, characterized by, include: The connecting part is installed to the main body of the device; Base plate, the base plate being located below the connecting portion; A first mass-spring assembly including a first elastic bar and a first mass, the first elastic bar being provided on the base plate, the first mass being mounted to the first elastic bar, the first elastic bar providing tensile and compressive stiffness K Az and bending stiffness K Ax , K Ay , the first elastic bar being a solid member, the tensile and compressive stiffness K Az being greater than the bending stiffness K Ax , K Ay , the bending stiffness K Ax , K Ay of the first elastic bar being utilized and the mass provided by the first mass forming a dynamic vibration absorber; A second mass-spring assembly including a second elastic bar and a second mass, the second elastic bar being mounted to the base plate, the second elastic bar providing tensile and compressive stiffness K Bz and bending stiffness K Bx , K By , at least a portion of the second elastic bar being formed as a hollow structure, capable of reducing the tensile and compressive stiffness K Bz of the second elastic bar and increasing the bending stiffness K Bx , K By of the second elastic bar, a dynamic vibration absorber being formed using the tensile and compressive stiffness K Bz of the second elastic bar and using the mass provided by the second mass mounted to the second elastic bar, the first elastic bar and the second elastic bar passing through the connection portion, at least one of the first elastic bar and the second elastic bar being fixed to the connection portion.

2. The vibration damping assembly of claim 1, wherein It also includes a vibration damping buffer, which is disposed on the base plate and supports the connecting part. One end of the first elastic rod is connected to the vibration damping buffer, and the other end of the first elastic rod passes through the connecting part and is provided with the first mass block.

3. The vibration damping assembly of claim 2, wherein The first elastic rod is fixed to the connecting part.

4. The vibration damping assembly of claim 3, wherein The connecting part is provided with a first through hole, and the second elastic rod is clearance-fitted with the first through hole.

5. The vibration damping assembly of claim 1, wherein It also includes a third mass spring assembly, which includes a third elastic rod and a third mass block. The third elastic rod is mounted to the base plate. The third elastic rod is a solid part and passes through the connecting part. The third mass block is mounted to the third elastic rod.

6. The vibration damping assembly of claim 5, wherein At least one of the cross-sections of the first elastic rod and the third elastic rod is formed as a circle.

7. The vibration reduction assembly of claim 5, wherein, The connecting part is provided with a second through hole, and the third elastic rod is clearance-fitted with the second through hole.

8. The vibration reduction assembly of claim 5, wherein, The second mass block and the third mass block are located on both sides of the connecting part.

9. The vibration damping assembly set forth in claim 1, wherein, The first mass spring assembly further includes a first fastening nut, which is threadedly engaged with the first elastic rod. The first fastening nut is provided on both sides of the first mass block to fix the first mass block to the first elastic rod.

10. The vibration damping assembly of claim 9, wherein, The first fastening nut located below is spaced apart from the connecting portion.

11. The vibration damping assembly of any one of claims 1-10, wherein, The second mass spring assembly also includes a second fastening nut, which is threadedly engaged with the second elastic rod. The second fastening nut is provided on both sides of the second mass block to fix the second mass block to the second elastic rod.

12. A vibrating apparatus, characterized by comprising: include: Equipment body; A vibration damping assembly, wherein the vibration damping assembly is according to any one of claims 1-11, and the connecting portion is connected to the main body of the device.

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