Mounting seat of vibration isolator, vibration reduction piece and vibration isolator

Abstract

The utility model relates to the technical field of vibration isolators, and provides a mounting base of a vibration isolator, vibration reduction pieces and the vibration isolators, the mounting base of the vibration isolator comprises a base part and a supporting part protruding along the surface of the base part, the supporting part is of a quadrangular prism structure, each side face of the supporting part is used for fixing the multiple vibration reduction pieces, a circle of groove is further formed in the end of the supporting part, and the vibration reduction pieces are arranged in the groove. The grooves are used for containing the multiple vibration reduction pieces. By means of the technical scheme, when the vibration isolator is stressed, compared with a vibration isolator in the prior art, the vibration isolator can achieve rigidity decoupling in the horizontal direction (the X direction and the Y direction) and the height direction (the Z direction), the vibration reduction piece in the vibration isolator has the characteristics of high static rigidity and low dynamic rigidity, and the vibration isolation effect is good. Therefore, the inherent frequency of the system can be reduced, and the vibration reduction effect of the vibration isolator is improved.

Description

Technical Field

[0001] The present application relates to the technical field of vibration isolators, and in particular to a mounting base, a vibration damping member and a vibration isolator of a vibration isolator. Background Art

[0002] As train speeds continue to increase, vibration has an increasingly greater impact on high-speed train operation and passenger comfort, so the requirements for vibration isolation are also becoming increasingly higher. Since the mounting base of the existing vibration isolator is cylindrical, and the rubber sleeve that has a vibration reduction effect is arranged on the cylindrical structure, after the vibration isolator is subjected to force, most of the rubber arranged around the circular column of the mounting base will be affected, that is, stiffness coupling is generated, and stiffness coupling will cause the vibration isolator to produce an unstable effect when subjected to external loads, thereby affecting the overall vibration reduction performance. Utility Model Content

[0003] The technical problem to be solved by the present application is to provide a mounting base, a vibration damping member and a vibration isolator for a vibration isolator, so that when the vibration isolator is subjected to force, the vibration damping in various directions is independent of each other, thereby achieving stiffness decoupling in various directions, which can better meet the vibration damping requirements in various directions and improve the vibration damping effect of the vibration isolator; the vibration damping member with a trapezoidal structure achieves the effect of high static and low dynamic stiffness characteristics compared to the original cylindrical vibration damping member.

[0004] In order to solve the above technical problems, this application adopts the following technical solutions:

[0005] In a first aspect, the present application provides a mounting base for a vibration isolator, comprising: a base and a supporting portion protruding along the surface of the base, wherein the supporting portion is a quadrangular prism structure, each side of the supporting portion is used to fix a plurality of vibration damping members, and a circle of grooves is also provided at the end of the supporting portion, wherein the grooves are used to accommodate a plurality of vibration damping members.

[0006] As an implementation manner, the groove is a quadrilateral, and each side is used to accommodate a plurality of vibration damping members.

[0007] In a second aspect, the present application provides a vibration damper installed on the mounting seat provided in the first aspect, the vibration damper includes a shell, the shell is a through structure, and the axial cross-section of the shell is a trapezoid.

[0008] As an embodiment, the shell is a stack of multiple rubber layers and multiple metal layers, wherein the two adjacent sides of each metal layer are the rubber layers.

[0009] As an embodiment, the vibration damping member further includes a core portion, wherein the core portion is connected to the outer shell and spaced apart from the outer shell.

[0010] As an embodiment, the core includes a base and a plug-in portion, the base is connected to the shell, and the base is provided with a groove, the plug-in section of the plug-in portion can be inserted into the groove and is spaced apart from the bottom wall of the groove.

[0011] As an implementation manner, the base is formed by laminating a metal layer and a rubber layer.

[0012] In a third aspect, the present application provides a vibration isolator, which includes the vibration damping member provided in the second aspect, and also includes a cover body, wherein the cover body is arranged on the outer periphery of the support portion and fits the vibration damping member.

[0013] As an embodiment, the support portion is a hollow structure; the vibration isolator also includes a gasket, and a plurality of vibration dampers are provided on the side of the gasket facing the support portion, and the vibration dampers are fixedly connected to the gasket and in close contact with the support portion.

[0014] As an implementation manner, the vibration isolator further includes a valve core, and the valve core passes through the gasket, the support portion, and the cover body in sequence, and is connected to the cover body.

[0015] The technical solution of this application has the following effects:

[0016] The mounting seat includes a base and a protruding supporting portion, and the supporting portion is a quadrangular prism structure, so that the four sides of the supporting portion can be used to fix multiple vibration damping parts, and the protruding end of the supporting portion is also provided with a groove, and multiple vibration damping parts are also provided in the groove. When the cover body is arranged on the outside of the supporting portion, the multiple vibration damping parts on each side of the four sides of the supporting portion can have a vibration damping effect in the horizontal direction (including the X direction and the Y direction); at the same time, the vibration damping parts in the groove can have a vibration damping effect in the height direction (Z direction). Therefore, the vibration damping parts on each surface of the mounting seat are independent of each other. When the vibration isolator is subjected to force, the multiple vibration damping parts on one surface of the mounting seat will have a vibration damping effect on the vibration isolator without being affected by the vibration damping parts on other surfaces, thereby realizing the stiffness decoupling of each surface, which can better meet the vibration damping requirements in various directions and improve the vibration damping effect of the vibration isolator. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of the explosion structure of the vibration isolator provided in an embodiment of the present application;

[0019] Figure 2 A schematic diagram of the structure of the vibration isolator provided in an embodiment of the present application;

[0020] Figure 3 Schematic diagram of the exploded structure of the vibration isolator provided in the embodiment of the present application from different perspectives;

[0021] Figure 4 A top view of a vibration isolator provided in an embodiment of the present application;

[0022] Figure 5 for Figure 4 A schematic cross-sectional structure diagram along the AA direction;

[0023] Figure 6 A schematic diagram of the structure of the vibration damping member provided in the embodiment of the present application;

[0024] Figure 7 A stiffness curve diagram of the vibration damping member provided in an embodiment of the present application;

[0025] Figure 8 A load-displacement curve comparison diagram of the vibration isolator provided in an embodiment of the present application and an existing vibration isolator.

[0026] Icon: 1-base; 2-support part; 21-groove; 3-vibration damper; 31-housing; 32-core; 321-plug-in part; 322-base; 4-cover; 5-gasket; 6-valve core. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0028] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0029] like Figure 1 , 3As shown in Figure 5, in the first aspect, the embodiment of the present application provides a mounting seat for a vibration isolator, comprising: a base 1 and a support portion 2 protruding along the surface of the base 1, the support portion 2 is a quadrangular prism structure, each side of the support portion 2 is used to fix multiple vibration damping members 3, which can have a vibration damping effect in the horizontal direction, that is, in the X and Y directions, and a circle of grooves 21 is also provided at the end of the support portion 2, the grooves 21 are used to accommodate multiple vibration damping members 3, which can have a vibration damping effect in the height direction, that is, in the Z direction, when the cover body 4 is arranged on the outside of the support portion 2, it can provide a vibration damping effect in both the horizontal direction (including the X and Y directions) and the height direction (including the Z direction) of the vibration damper; when the vibration isolator is subjected to force, the multiple vibration damping members 3 on each surface of the vibration isolator in the embodiment of the present application are independent of each other, and the multiple vibration damping members 3 on any one surface can have a vibration damping effect independently without being affected by the vibration damping members 3 on other surfaces, thereby realizing the stiffness decoupling of each surface, which can better meet the vibration damping requirements in each direction and improve the vibration damping effect of the vibration isolator.

[0030] Optionally, five vibration dampers 3 can be fixed on each side of the support portion 2. Of course, it can also be adjusted according to actual conditions. The vibration dampers 3 can be fixed on each side of the support portion 2 by vulcanization or gluing.

[0031] like Figure 1 and 3 As shown, as an embodiment, the groove 21 is a quadrilateral, and each side is used to accommodate multiple vibration damping members 3, so as to provide vibration reduction for the vibration isolator in the height direction; in addition, the groove 21 is set to be a quadrilateral so that the vibration isolator can be evenly stressed.

[0032] Optionally, three vibration dampers 3 can be fixed on each side of the groove 21. Of course, it can also be adjusted according to actual conditions. The vibration dampers 3 can be fixed in the groove 21 by vulcanization or gluing.

[0033] like Figure 6 As shown, in the second aspect, the embodiment of the present application provides a vibration damper 3 installed on the mounting seat provided in the first aspect, and the vibration damper 3 includes a shell 31, and the shell 31 is a through structure, so that the vibration damper 3 has a deformation space, so that the vibration isolator can reduce the influence of vibration and impact when it is subjected to dynamic load; the axial cross-section of the shell 31 is trapezoidal, so that the two waists of the vibration damper 3 can support the vibration damper 3, so that the vibration damper 3 has the ability to maintain stability in static state, so that the vibration damper 3 in the embodiment of the present application can have the characteristics of high static stiffness and low dynamic stiffness under the target working conditions.

[0034] like Figure 6As shown, as an embodiment, the shell 31 is a stacked arrangement of multiple rubber layers and multiple metal layers, wherein the adjacent two sides of each metal layer are rubber layers, so that the stacked arrangement of a metal layer and a rubber layer enables the vibration damper 3 to not only have a vibration damping effect, but also the metal layer can improve the bearing capacity and structural stability of the vibration damper 3.

[0035] Optionally, the metal layer may be aluminum, iron, etc., without limitation.

[0036] like Figure 6 As shown, as an embodiment, the vibration damper 3 also includes a core 32, which is connected to the shell 31 and is spaced apart from the shell 31, so that the shell 31 can be deformed when subjected to a smaller load; when subjected to a larger load, the core 32 can support the shell 31 to prevent the shell 31 from being crushed; in addition, when the vibration damper 3 is subjected to a larger load, the core 32 can also reduce the impact of vibration and impact.

[0037] Optionally, the axial cross-section of the core 32 is trapezoidal, so that the distance from the shell 31 to the core 32 is equal, and when the core 32 contacts the shell 31, the force can be evenly applied.

[0038] like Figure 6 As shown, as an embodiment, the core 32 includes a base 322 and a plug-in portion 321, the base 322 is connected to the shell 31, and the base 322 is provided with a groove, the plug-in section of the plug-in portion 321 can be inserted into the groove and spaced apart from the bottom wall of the groove, thereby providing a certain deformation space for the plug-in portion 321 to improve the vibration reduction effect of the vibration damping member 3.

[0039] As an implementation manner, the base 322 is stacked by a metal layer and a rubber layer, so as to improve the structural stability of the base 322 while also satisfying the vibration reduction effect of the core 32 .

[0040] like Figure 7 As shown, in addition, the embodiment of the present application also provides experimental data of the vibration damper 3. It can be seen from the data that the tangent slope of the curve is the dynamic stiffness, and the line connecting any point with the origin is the static stiffness. When the deformation displacement of the vibration damper 3 exceeds 4 mm, it can be clearly seen that the tangent slope of the curve is gradually decreasing, indicating that the dynamic stiffness of the vibration damper 3 is gradually decreasing. The vibration isolator generally works in a state where the deformation amount of the vibration damper 3 is also greater than 4 mm. The vibration damper 3 of the embodiment of the present application has a gradually decreasing slope within this deformation range, indicating that the dynamic stiffness is gradually decreasing, meeting the requirements of the vibration isolator. At the same time, within the deformation range of more than 4 mm, the line connecting each point with the origin is the static stiffness. It can be seen from the data graph that the slope of the static stiffness is significantly greater than the tangent slope of the dynamic stiffness, indicating that the vibration damper 3 has the characteristic of high static stiffness and low dynamic stiffness under the target working condition.

[0041] like Figure 1 and 3 As shown, in the third aspect, an embodiment of the present application provides a vibration isolator, which includes the vibration damping member 3 provided in the second aspect, and also includes a cover body 4, which is arranged on the outer periphery of the support part 2 and is fitted with multiple vibration damping members 3. When the cover body 4 is subjected to force, the multiple vibration damping members 3 can provide support to the cover body 4, thereby achieving the vibration reduction effect of the vibration isolator.

[0042] At the same time, since vibration damping members 3 are provided at the ends and each side surface of the support portion 2, the vibration isolator can provide vibration damping effects in the three directions of X, Y and Z. When the vibration isolator is subjected to force, the multiple vibration damping members 3 on each surface of the vibration isolator are independent of each other. The multiple vibration damping members 3 on any one surface can individually play a vibration damping effect without being affected by the vibration damping members 3 on other surfaces, thereby achieving stiffness decoupling of each surface, better meeting the vibration damping requirements in each direction, and improving the vibration damping effect of the vibration isolator.

[0043] like Figure 2 , 3 As shown in Figure 5, as an embodiment, the support portion 2 is a hollow structure, thereby providing installation space for the gasket 5 and the valve core 6; the vibration isolator also includes a gasket 5, the gasket 5 is located in the hollow structure, and a plurality of vibration damping members 3 are provided on the side of the gasket 5 facing the support portion 2. The vibration damping members 3 are fixedly connected to the gasket 5 and are in close contact with the support portion 2, thereby further providing vibration damping for the vibration isolator in the height direction.

[0044] Optionally, the vibration damper 3 may be fixed to one side of the gasket 5 by vulcanization or gluing.

[0045] Optionally, the vibration damping member 3 between the washer 5 and the support portion 2 may be in the shape of an elongated strip, thereby making the structure between the washer 5 and the support portion 2 more stable.

[0046] like Figure 1 , 2 As shown in FIG. 5 , as an embodiment, the vibration isolator further includes a valve core 6, which passes through the gasket 5, the support portion 2 and the cover body 4 in sequence and is connected to the cover body 4, thereby improving the structural stability of the vibration isolator.

[0047] like Figure 8 As shown, a comparison is made between the vibration isolator of the embodiment of the present application and the vibration isolator of the prior art: the vibration isolator of the embodiment of the present application utilizes the high static and low dynamic characteristics of the trapezoidal vibration damping member 3, which not only ensures the static bearing capacity of the high-speed train, but also greatly reduces the dynamic stiffness and natural frequency of the system, thereby improving the vibration reduction effect of the vibration isolator.

[0048] The above description is only an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0049] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0050] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. A mounting base for a vibration isolator, characterized in that: include: A base and a support portion protruding along the surface of the base, wherein the support portion is a quadrangular prism structure, each side of the support portion is used to fix multiple vibration damping members, and a circle of grooves is also provided at the end of the support portion, and the grooves are used to accommodate multiple vibration damping members.

2. The mounting base of the vibration isolator according to claim 1, characterized in that: The groove is quadrilateral, and each side is used to accommodate a plurality of vibration-damping members.

3. A vibration damping member mounted on the mounting seat according to claim 1 or 2, characterized in that: The vibration damping member comprises a shell, the shell is a through structure, and the axial cross section of the shell is a trapezoid.

4. The vibration damping member according to claim 3, characterized in that: The shell is formed by stacking a plurality of rubber layers and a plurality of metal layers, wherein the two adjacent sides of each metal layer are the rubber layers.

5. The vibration damping member according to claim 3, characterized in that: The vibration damping member further includes a core portion, wherein the core portion is connected to the shell and is spaced apart from the shell.

6. The vibration damping member according to claim 5, characterized in that: The core part comprises a base and an inserting part, wherein the base is connected to the shell and is provided with a groove, and the inserting section of the inserting part can be inserted into the groove and is spaced apart from the bottom wall of the groove.

7. The vibration damping member according to claim 6, characterized in that: The base is formed by laminating a metal layer and a rubber layer.

8. A vibration isolator, characterized in that: The vibration isolator comprises the vibration damping member according to any one of claims 3 to 7, and further comprises a cover body, wherein the cover body is arranged on the outer periphery of the supporting portion and fits the vibration damping member.

9. The vibration isolator according to claim 8, characterized in that: The support portion is a hollow structure; The vibration isolator further comprises a washer, which is located in the hollow structure. A plurality of vibration dampers are arranged on one side of the washer facing the support portion. The vibration dampers are fixedly connected to the washer and in close contact with the support portion.

10. The vibration isolator according to claim 9, characterized in that: The vibration isolator further comprises a valve core, and the valve core passes through the gasket, the support portion and the cover body in sequence, and is connected to the cover body.

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