A three-directional rigidity adjustable vibration isolation device

Abstract

The application discloses a three-direction rigidity adjustable vibration isolation device, which comprises a shell and a hollow base arranged in the shell, a core shaft is arranged in the center of the base, a longitudinal elastic element is arranged on the core shaft, and a longitudinal adjusting element for adjusting the rigidity of the longitudinal elastic element is arranged in the base; a transverse elastic element is further arranged in the base and the shell, and a transverse adjusting element for adjusting the rigidity of the transverse elastic element is arranged in the shell. The application can bear high temperature, low temperature and special environment which cannot be borne by rubber vibration isolators, can adjust rigidity, has good adaptability, is flexible, convenient and reliable to install, and is convenient to use.

Description

TECHNICAL FIELD

[0001] The present application relates to a vibration isolation device, in particular to a three-direction stiffness adjustable vibration isolation device. BACKGROUND

[0002] At present, the three-direction equal stiffness vibration isolator is mainly rubber, and the stiffness values of the vibration isolator in X, Y and Z directions are approximately equal. The disadvantages are: 1. The rubber part is easy to age, the service life is short, and it cannot be used in some extreme harsh working conditions, such as high and low temperature and humid environment; 2. The stiffness of the vibration isolator is customized, and the use range is relatively limited. SUMMARY

[0003] In order to solve the defects of the prior art, the present application provides a three-direction stiffness adjustable vibration isolation device, which can withstand high temperature and low temperature and special environment that the rubber vibration isolator cannot withstand, can adjust the stiffness, has good adaptability, is flexible, convenient and reliable to install, and is convenient to use.

[0004] In order to achieve the above technical purpose, the present application adopts the following technical scheme: a three-direction stiffness adjustable vibration isolation device, comprising a shell and a hollow base arranged in the shell, a core shaft is arranged at the center of the base, the core shaft is provided with a longitudinal elastic element, and the longitudinal elastic element is matched with a longitudinal adjusting element arranged in the base to adjust the stiffness of the longitudinal elastic element.

[0005] The base and the shell are further provided with a transverse elastic element, and the transverse elastic element is matched with a transverse adjusting element arranged in the shell to adjust the stiffness of the transverse elastic element.

[0006] Further, the longitudinal elastic element adopts a spring arranged on the outer periphery of the core shaft, one end of the core shaft is provided with a spring retainer and the longitudinal adjusting element, and the longitudinal adjusting element is arranged in the base to adjust the longitudinal stiffness of the spring.

[0007] Further, the longitudinal adjusting element adopts a longitudinal stiffness adjusting ring, the longitudinal stiffness adjusting ring is arranged in the end hollow hole of the base, and can block the spring retainer.

[0008] Further, one end of the core shaft is provided with a stepped surface, the other end is arranged in the center hole of the spring retainer, and the other end is provided with an R-shaped gasket and a flange nut to limit the spring retainer; one end of the spring abuts against the stepped surface, and the other end abuts against the spring retainer.

[0009] Further, the center hole of the spring retainer is a tapered hole, and the large diameter end of the tapered hole faces the spring; the end of the core shaft is a variable diameter end with gradually decreasing diameter, so that the spring retainer can compress the spring.

[0010] Further, the lateral elastic member comprises a first annular metal cushion and a second annular metal cushion, the lateral adjusting member comprises a first lateral adjusting member and a second lateral adjusting member, the first lateral adjusting member is arranged in the shell for adjusting the rigidity of the first annular metal cushion, and the second lateral adjusting member is arranged in the shell for adjusting the rigidity of the second annular metal cushion; one end of the base is provided with the first annular metal cushion, and the outer periphery of the base is provided with the second annular metal cushion.

[0011] Further, the first lateral adjusting member adopts an upper adjusting ring, the upper adjusting ring is sleeved on the outer periphery of the mandrel and presses the first annular metal cushion.

[0012] Further, the second lateral adjusting member adopts a supporting sleeve arranged on the inner wall of the second annular metal cushion and a lateral rigidity adjusting ring arranged on the outer periphery of the base, the inner wall of the lateral rigidity adjusting ring is in contact with the base, the outer wall is in contact with one end of the inner wall of the supporting sleeve, and the other end of the inner wall of the supporting sleeve is in contact with the conical surface of the outer wall of the base; the lateral rigidity adjusting ring and the conical surface are hollow.

[0013] Further, the conical surface is matched with a stepped surface, and a wave-shaped gasket is arranged between the second annular metal cushion and the stepped surface.

[0014] In summary, the present application achieves the following technical effects:

[0015] The vibration isolator 3 of the present application can adjust the stiffness in a certain range, and the mechanical mechanism is connected, instead of the rubber integrated structure in the prior art, the present application can adjust the stiffness, has a wider application range, and can reduce certain research and development customization cost.

[0016] All materials of the present application are selected from stainless steel materials such as 304, which solves the problem of easy aging of rubber;

[0017] The cylindrical design of the present application does not need to strictly distinguish the XY direction, and the tensioning structure can meet the consistency of stiffness in all directions at the same time;

[0018] The present application mainly comprises a lateral rigidity adjusting structure and a longitudinal rigidity adjusting structure, and can work independently or simultaneously.

[0019] The present application can withstand high temperature and low temperature that rubber vibration isolators cannot withstand, and some special environments such as vacuum, and can also select materials according to actual working conditions. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a three-dimensional view of a three-way stiffness adjustable vibration isolation device provided by an embodiment of the present application;

[0021] Figure 2 is Figure 1 a cross-sectional view. DETAILED DESCRIPTION

[0022] The application will be further described below in conjunction with the drawings.

[0023] The specific embodiments are only illustrative of the application, and are not intended to limit the application. Those skilled in the art can make modifications to the embodiments without creative contribution, and the modifications are within the scope of the application as long as they are within the scope of the claims.

[0024] In the description of the application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0025] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0026] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; 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 internal communication of two elements or the interaction relationship between 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.

[0027] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature can be "above", "over" and "on" the second feature, which can be that the first feature is directly above or obliquely above the second feature, or only means that the first feature is horizontally higher than the second feature. The first feature can be "below", "under" and "under" the second feature, which can be that the first feature is directly below or obliquely below the second feature, or only means that the first feature is horizontally lower than the second feature.

[0028] Embodiment:

[0029] As Figure 1 shown is a three-way rigidity adjustable vibration isolation device, as Figure 2 shown is a cross-sectional view of Figure 1 , including a shell 1 and a hollow base 2 arranged inside the shell 1, the center of the base 2 is provided with a core shaft 3 as an XYZ working shaft, the core shaft 3 is provided with a longitudinal elastic member, and the longitudinal elastic member is matched with a longitudinal adjusting member arranged in the base 2 to adjust the rigidity of the longitudinal elastic member; The base 2 and the shell 1 are also provided with a transverse elastic member, and the transverse elastic member is matched with a transverse adjusting member arranged in the shell 1 to adjust the rigidity of the transverse elastic member.

[0030] The longitudinal elastic member adopts a spring 4 arranged on the outer periphery of the core shaft 3, one end of the core shaft 3 is provided with a spring stop ring 5 and a longitudinal adjusting member, and the longitudinal adjusting member is arranged in the base 2 to adjust the longitudinal rigidity of the spring 4. The outer periphery of the core shaft 3 is sleeved with the spring 4, one end of the core shaft 3 is provided with the spring stop ring 5 and the longitudinal adjusting member, and the longitudinal adjusting member is arranged in the base 2 to adjust the longitudinal rigidity of the spring 4; One end of the base 2 is provided with a first annular metal soft pad 13, the first annular metal soft pad 13 is also provided with a first transverse adjusting member for adjusting the first annular metal soft pad 13, and the outer periphery of the base 2 is provided with a second annular metal soft pad 8, and the second annular metal soft pad 8 is also connected with a second transverse adjusting member for adjusting the second annular metal soft pad 8.

[0031] The vibration isolation device of the present application is a cylindrical structure as a whole, the cylindrical design does not strictly distinguish the XY direction, three adjusting members are used to simultaneously satisfy the consistency of rigidity in each direction, so that the use is more convenient. The three adjusting members can adjust the rigidity in XYZ three directions, and are connected by mechanical structure, instead of the previous rubber integration, so that the rigidity can be adjusted and the adaptability is good.

[0032] Specifically, as Figure 2As shown, the longitudinal adjusting member adopts a longitudinal rigidity adjusting ring 17, which is arranged in the end hollow hole of the base 2 and can block the spring blocking ring 5. The longitudinal rigidity adjusting ring 17 is screwed to the base 2 and can adjust the depth into the base 2 to adjust the position of the spring blocking ring 5, thereby adjusting the rigidity of the spring 4.

[0033] As shown, one end of the mandrel 3 is provided with a stepped surface, the other end is arranged in the center hole of the spring blocking ring 5, and the other end is provided with an R-shaped gasket 6 and a flange nut 7 for limiting the spring blocking ring 5; one end of the spring 4 abuts against the stepped surface, and the other end abuts against the spring blocking ring 5. The center hole of the spring blocking ring 5 is a tapered hole, and the large diameter end of the tapered hole faces the spring 4; the end of the mandrel 3 is a variable diameter end with gradually decreasing diameter, so that the spring blocking ring 5 can compress the spring 4.

[0034] The spring 4 can provide longitudinal rigidity. The spring blocking ring 5 is limited by the flange nut 7 to prevent falling off, and also limits the maximum length of the spring 4. When the spring blocking ring 5 is driven by the longitudinal rigidity adjusting ring 17 to compress the spring 4, the large diameter end of the tapered hole faces the spring and cooperates with the variable diameter end, which can easily move along the mandrel 3, improving the convenience of adjusting the longitudinal rigidity.

[0035] The R-shaped gasket 6 ensures that the mandrel rotates when subjected to horizontal force, improving performance. The flange nut 7 functions as a fixed barrier.

[0036] The inner end face of the longitudinal rigidity adjusting ring 17 is provided with a blind groove for accommodating the end of the mandrel 3 and the flange nut 7.

[0037] The transverse elastic member includes a first annular metal cushion 13 and a second annular metal cushion 8, and the transverse adjusting member includes a first transverse adjusting member and a second transverse adjusting member. The first transverse adjusting member is arranged in the housing 1 for adjusting the rigidity of the first annular metal cushion 13, and the second transverse adjusting member is arranged in the housing 1 for adjusting the rigidity of the second annular metal cushion 8. One end of the base 2 is provided with the first annular metal cushion 13, and the outer periphery of the base 2 is provided with the second annular metal cushion 8.

[0038] As shown, Figure 2 The first transverse adjusting member adopts an upper adjusting ring 14, which is sleeved on the outer periphery of the mandrel 3 and presses the first annular metal cushion 13. The upper adjusting ring 14 is screwed to the housing 1 and can fine-tune the rigidity of the first annular metal cushion 13, so that the first annular metal cushion 13 can provide partial transverse rigidity. When the mandrel is subjected to horizontal force, the rigidity of the first annular metal cushion 13 will be affected.

[0039] As shown, Figure 2As shown, the second lateral adjusting member adopts a supporting sleeve 9 arranged on the inner wall of the second annular metal soft pad 8 and a lateral rigidity adjusting ring 10 arranged on the outer periphery of the base 2. The inner wall of the lateral rigidity adjusting ring 10 contacts the base 2, and the outer wall contacts the inner wall of the supporting sleeve 9 at one end. The other end of the inner wall of the supporting sleeve 9 contacts the tapered surface of the outer wall of the base 2. The tapered surface matches a stepped surface. A wave-shaped gasket 11 is arranged between the second annular metal soft pad 8 and the stepped surface, which can fill the gap and can also have a restoring effect. The space between the lateral rigidity adjusting ring 10 and the tapered surface is hollow, which can facilitate the adjustment of the size of the supporting sleeve 9. The lateral rigidity adjusting ring 10 is equipped with a locking screw 12, which can lock the lateral rigidity adjusting ring 10 after adjusting the position of the lateral rigidity adjusting ring 10. The outer wall of the lateral rigidity adjusting ring 10 is a tapered surface, the small-diameter end of which extends into the inside of the outer shell 1 for adjusting the size of the supporting sleeve 9, and the large-diameter end is located outside the outer shell 1 for cooperating with the locking screw 12 to fix itself. After changing the position of the lateral rigidity adjusting ring 10, the supporting sleeve 9 can be squeezed or loosened, and the size of the inner support can be changed by the taper, so as to change the rigidity of the second annular metal soft pad 8.

[0040] The lower end of the outer shell 1 is provided with an outer shell rear cover 15 which is screwed with the outer shell and limits the second annular metal soft pad 8.

[0041] One end of the base 2 extends to the rear of the outer shell 1 and is provided with a mounting flange 16 which is screwed with the base and can be optionally installed. The base part of the present application is designed as a screw thread and an adapter flange, which is flexible, convenient and reliable to install. The installation mode can be arbitrarily switched according to the working conditions.

[0042] Working principle:

[0043] According to the environment, the positions of the upper adjusting ring 14, the longitudinal rigidity adjusting ring 17 and the lateral rigidity adjusting ring 10 are adjusted to appropriate positions, so as to change the rigidity of the first annular metal soft pad 13, the second annular metal soft pad 8 and the spring 4, thereby adjusting the rigidity in the XYZ three directions to adapt to various occasions.

[0044] The above description is only a preferred embodiment of the present application, and does not limit the present application in any form. Any simple modification, equivalent change and modification made according to the technical essence of the present application to the above embodiments are within the scope of the technical solution of the present application.

Claims

1. A three-axis stiffness adjustable vibration isolation device, characterized by: The invention comprises a housing (1) and a hollow base (2) arranged inside the housing (1); a core shaft (3) is arranged at the center of the base (2); the core shaft (3) is provided with a longitudinal elastic member; the longitudinal elastic member cooperates with a longitudinal adjustment member arranged in the base (2) for adjusting the stiffness of the longitudinal elastic member; A transverse elastic member is further provided in the base (2) and the housing (1), and the transverse elastic member cooperates with a transverse adjustment member provided in the housing (1) for adjusting the stiffness of the transverse elastic member; The longitudinal elastic member adopts a spring (4) arranged on the outer periphery of the core shaft (3), one end of the core shaft (3) is provided with a spring retaining ring (5) and the longitudinal adjustment member, and the longitudinal adjustment member is arranged in the base (2) to adjust the longitudinal stiffness of the spring (4); The longitudinal adjustment member adopts a longitudinal stiffness adjustment ring (17), and the longitudinal stiffness adjustment ring (17) is arranged in the hollow hole at the end of the base (2) and is capable of blocking the spring retaining ring (5); The transverse elastic member comprises a first annular metal pad (13) and a second annular metal pad (8); the transverse adjustment member comprises a first transverse adjustment member and a second transverse adjustment member, the first transverse adjustment member being arranged in the housing (1) for adjusting the stiffness of the first annular metal pad (13), and the second transverse adjustment member being arranged in the housing (1) for adjusting the stiffness of the second annular metal pad (8); the first annular metal pad (13) is arranged at one end of the base (2), and the second annular metal pad (8) is arranged on the periphery of the base (2); The second transverse adjustment member adopts a support sleeve (9) provided on the inner wall of the second annular metal cushion (8) and a transverse stiffness adjustment ring (10) provided on the outer periphery of the base (2); the inner wall of the transverse stiffness adjustment ring (10) contacts the base (2), the outer wall contacts one end of the inner wall of the support sleeve (9), and the other end of the inner wall of the support sleeve (9) contacts the conical surface of the outer wall of the base (2); and a hollow space is formed between the transverse stiffness adjustment ring (10) and the conical surface.

2. The three-axis stiffness adjustable vibration isolation device according to claim 1, characterized in that: One end of the core shaft (3) is provided with a stepped surface, and the other end is passed through the center hole of the spring retaining ring (5), and the other end is provided with an R-type gasket (6) and a flange nut (7) to limit the spring retaining ring (5); one end of the spring (4) abuts against the stepped surface, and the other end abuts against the spring retaining ring (5).

3. The three-axis stiffness adjustable vibration isolation device according to claim 2, characterized in that: The center hole of the spring retaining ring (5) is a tapered hole, and the large diameter end of the tapered hole faces the spring (4); the end of the core shaft (3) is a reducing end with a gradually decreasing diameter, so that the spring retaining ring (5) can compress the spring (4).

4. The three-axis stiffness adjustable vibration isolation device according to claim 1, characterized in that: The first transverse adjustment member adopts an upper adjustment ring (14), and the upper adjustment ring (14) is sleeved on the outer periphery of the core shaft (3) and presses the first annular metal cushion (13).

5. The three-axis stiffness adjustable vibration isolation device according to claim 1, characterized in that: The conical surface is matched with a step surface, and a corrugated gasket (11) is provided between the second annular metal soft pad (8) and the step surface.

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