A high-rigidity vibration isolator
By designing a large stiffness vibration isolator, using a shell, a central shaft, a gasket and different types of elastic parts, the problem that existing vibration isolators are difficult to dampen heavy equipment in small spaces, and effective vibration reduction for axial and radial loads is achieved, providing excellent vibration isolation effect and fatigue resistance.
Patent Information
- Application Number
- CN202420840751.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-22
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-04-22
AI Technical Summary
Existing vibration isolators are difficult to effectively dampen high-weight equipment in smaller installation spaces.
A large stiffness vibration isolator is designed, using components such as a housing, a central shaft, a gasket, first and second elastic parts (metal rubber and disc springs). Through the cooperation of these components, effective vibration reduction of axial and radial loads is achieved.
When the vibration isolator is subjected to large axial and radial loads, it can significantly reduce vibration transmission, provide excellent vibration damping effect, and also has good fatigue life and environmental adaptability.
Smart Images
Figure CN222746503U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of vibration isolators, in particular to a high-rigidity vibration isolator. Background Art
[0002] At present, the rated load of a single vibration isolator corresponding to a small size of the vibration isolator is also small, so the current vibration isolators cannot provide a suitable vibration reduction function for heavy equipment in a small installation space. Summary of the invention
[0003] In order to solve at least one technical problem in the prior art, the embodiment of the utility model provides a high-rigidity vibration isolator that occupies a small space and can bear the shock absorption of heavy equipment. In order to achieve the above technical objectives, the technical solution adopted by the embodiment of the utility model is:
[0004] The utility model provides a high-rigidity vibration isolator, comprising:
[0005] A shell, the shell extends axially, the shell has a cavity inside, the inner side of the shell is provided with a first step, and the outer side of the shell is provided with a second step;
[0006] A central shaft is disposed at one end of the shell, the central shaft comprises a central section and a first end-sealing section, the central section extends axially and is disposed in the cavity, and the first end-sealing section is fixedly connected to one end of the central section;
[0007] a gasket, arranged at the other end of the shell, the gasket comprising a connecting section and a second sealing section, the connecting section extending axially, arranged in the cavity, and connected to the central section, the second sealing section being fixedly connected to one end of the connecting section;
[0008] A gap is provided between the first sealing section and one end of the shell, and / or between the second sealing section and the other end of the shell;
[0009] A first elastic member is provided between the first step and the first sealing section, and / or between the first step and the second sealing section;
[0010] A second elastic member is provided between the second step and the first sealing section, and / or between the second step and the second sealing section.
[0011] Furthermore, the high-rigidity vibration isolator includes four of the first elastic members,
[0012] Any two of the first elastic members are sequentially arranged along the axial direction, with one end abutting against the first step and the other end abutting against the first end-sealing section;
[0013] Any two of the second elastic members are sequentially arranged along the axial direction, with one end abutting against the first step and the other end abutting against the second end-sealing section.
[0014] Furthermore, the first elastic member is metal rubber.
[0015] Furthermore, the second elastic member is a disc spring.
[0016] Furthermore, the central section is fixedly connected to the connecting section, the second step protrudes from the second elastic member, and the second step is provided with a mounting hole (121).
[0017] Furthermore, a gap is provided between the central section and the first step in the radial direction.
[0018] Furthermore, the high-rigidity vibration isolator further comprises a gland, and the gland comprises:
[0019] a radial section, one end of which abuts against the first elastic member,
[0020] An axial segment, one end of which is fixedly connected to the outer side of the radial segment, and the other end of which is against the second elastic member;
[0021] The gland is provided between the first sealing section and one end of the shell, and / or between the second sealing section and the other end of the shell.
[0022] The beneficial effects brought by the technical solution provided by the embodiment of the utility model are:
[0023] 1) When the high-rigidity vibration isolator of the embodiment of the utility model bears an axial load, since the metal rubber is designed on the inner side of the shell and the disc spring is designed on the outer side, the disc spring has a large stiffness and can bear the initial load. The higher the compression degree of the metal rubber, the greater the stiffness, and thus it can bear a larger load.
[0024] 2) When the embodiment of the utility model is subjected to radial load, the contact area between the shell and the metal rubber is large, so the radial effective deformation space of the high-rigidity vibration isolator is large and the vibration reduction effect is excellent.
[0025] 3) Metal rubber and disc springs have long fatigue life, and high-rigidity vibration isolators have good environmental adaptability and can be used in high and low temperature environments.
[0026] 4) The embodiment of the utility model has a reasonable structural design, is easy to install, occupies a small space, and has an excellent seismic isolation effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 It is a schematic structural diagram of a high-rigidity vibration isolator in an embodiment of the utility model.
[0028] Figure 2 It is a cross-sectional view of a high-rigidity vibration isolator in an embodiment of the utility model. DETAILED DESCRIPTION
[0029] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0030] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.
[0031] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can also be the internal connection of two components, it can be a wireless connection, or it can be a wired connection. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0032] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0033] The utility model provides a high-rigidity vibration isolator, comprising:
[0034] A shell 1, the shell 1 extends in the axial direction, the shell 1 is a cavity, the inner side of the shell 1 is provided with a first step 11, and the outer side of the shell 1 is provided with a second step 12;
[0035] A central shaft 2 is disposed at one end of the housing 1, and includes a central section 21 and a first end-sealing section 22. The central section 21 extends axially and is disposed in the cavity, and the first end-sealing section 22 is fixedly connected to one end of the central section 21;
[0036] A gasket 3 is provided at the other end of the housing 1, and comprises a connecting section 31 and a second sealing section 32. The connecting section 31 extends axially, is provided in the cavity, and is connected to the central section 21. The second sealing section 32 is fixedly connected to one end of the connecting section 31.
[0037] A gap is provided between the first sealing section 22 and one end of the shell 1, and / or between the second sealing section 32 and the other end of the shell 1;
[0038] A first elastic member 4 is provided between the first step 11 and the first sealing section 22, and / or between the first step 11 and the second sealing section 32;
[0039] The second elastic member 5 is provided between the second step 12 and the first sealing section 22 , and / or between the second step 12 and the second sealing section 32 .
[0040] In a specific embodiment, Figure 2 As shown, the shell 1 extends from top to bottom, the central axis 2 is arranged at the upper end of the shell 1, and the gasket 3 is arranged at the lower end of the shell 1.
[0041] The positions and extension directions of the first step 11 and the second step 12 are not limited. The height of the first step 11 on the inner side of the shell 1 and the height of the second step 12 on the outer side of the shell 1 can be the same or different. Furthermore, the first step 11 extends radially inward, and the second step 12 extends radially outward.
[0042] The number of the first elastic member 4 and the second elastic member 5 is also not limited. Figure 2 As shown, the first elastic member 4 is provided on the upper and lower sides of the first step 11, and the second elastic member 5 is provided on the upper and lower sides of the second step 12. When working, the shell 1 is connected to the movable part of the equipment, and the central axis 2 and / or the gasket 3 are connected to the fixed part of the equipment. When a load is applied to the high-rigidity isolator in the axial direction, the shell 1 will be driven to move in the height direction. The elasticity of the first elastic member 4 and the second elastic member 5 makes the shell 1 reciprocate between the first sealing end section 22 and the second sealing end section 32, thereby playing an axial shock-absorbing role. The present application has a reasonable structural design, is easy to install, occupies a small space, can bear large loads, and has an excellent shock isolation effect.
[0043] Furthermore, the high-rigidity vibration isolator includes four of the first elastic members 4,
[0044] Any two of the first elastic members 4 are sequentially arranged along the axial direction, with one end abutting against the first step 11 and the other end abutting against the first end-sealing section 22;
[0045] Any two of the second elastic members 5 are sequentially arranged along the axial direction, with one end abutting against the first step 11 and the other end abutting against the second end-sealing section 32 .
[0046] In this embodiment, the types of the first elastic member 4 and the second elastic member 5 are not limited. In a specific embodiment, the first elastic member 4 is a metal rubber. The second elastic member 5 is a disc spring. Among them, the metal rubber is prepared by using a specific process to arrange a plurality of spiral metal wires in an orderly manner in a stamping or rolling mold. The greater the degree of compression, the greater the stiffness of the metal rubber. The disc spring is composed of at least one conical disc-shaped metal member, which can bear static or dynamic loads acting in the axial direction. The present application adopts metal rubber and disc spring. When a load is applied to the high-rigidity isolator in the axial direction, the disc spring has a large stiffness and a strong bearing capacity at the beginning. The greater the pressure, the greater the stiffness of the metal rubber. Therefore, the structure has a strong bearing capacity, and the use of metal rubber and disc spring ensures that the high-rigidity isolator is resistant to high and low temperatures and has a long service life. The shell, the center shaft, the gasket, the first elastic member and the second elastic member in the present application are all made of metal materials with good environmental adaptability.
[0047] In this embodiment, the central section 21 is fixedly connected to the connecting section 31, the second step 12 protrudes from the second elastic member 5, and the second step 12 is provided with a mounting hole 121. Figure 1 As shown, when in use, the mounting hole 121 can be used to fix the housing to the movable part of the connecting device, and the central section and the connecting section can be threadedly connected to fix the fixed part of the connecting device.
[0048] Furthermore, a gap is provided between the center section 21 and the first step 11 in the radial direction. It can be understood that in this structure, when the high-rigidity vibration isolator bears a radial load, the pressure is transmitted from the protruding second step 12 to the metal rubber through the shell 1, and the metal rubber is compressed and has a tendency to return to its original state. The gap between the center section 21 and the first step 11 is reduced. When the radial load decreases until it disappears, the metal rubber returns to its original state and the gap between the center section 21 and the first step 11 is restored to its original state. The contact area between the shell 1 and the metal rubber is large. Therefore, the high-rigidity vibration isolator can bear a large radial load, has a large effective radial deformation space, has an excellent vibration reduction effect, and has a long fatigue life of the metal rubber.
[0049] In the present application, the specific configuration of the first end-sealing section and the second end-sealing section is not limited. In a specific embodiment, the first end-sealing section extends radially and bends toward the second step, and the second end-sealing section also extends radially and bends toward the second step. In another specific embodiment, the first end-sealing section and the second end-sealing section extend radially. In this embodiment, the high-rigidity vibration isolator further includes a gland 6, and the gland 6 includes:
[0050] A radial section 61, one end of which abuts against the first elastic member 4,
[0051] An axial segment 62, one end of which is fixedly connected to the outer side of the radial segment 61, and the other end of which is against the second elastic member 5;
[0052] The gland 6 is provided between the first sealing section 22 and one end of the shell 1 , and / or between the second sealing section 32 and the other end of the shell 1 .
[0053] like Figure 2 As shown, the upper and lower ends of the shell 1 may be provided with the gland 6. Taking the gland 6 at the upper end as an example, the gland 6 and the first end-sealing section 22 of the central shaft 2 may be integrally formed or may be provided separately. During installation, the first elastic member 4 is disposed in the cavity, the second elastic member 5 is sleeved on the outer side of the shell 1, and then one gland 6 is sleeved on the upper end face of the shell 1, the central section 21 of the central shaft 2 is inserted into the cavity, and the other gland 6 is sleeved on the lower end face of the shell 1, and the connecting section 31 of the gasket 3 is inserted into the cavity and fixedly connected to the central section 21. The gland 6 is beneficial to the stability and integrity of the high-rigidity vibration isolator structure.
[0054] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to examples, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.
Claims
1. A high-rigidity vibration isolator, characterized in that: include: A shell (1), the shell (1) extending in an axial direction, the shell (1) being a cavity, the inner side of the shell (1) being provided with a first step (11), and the outer side of the shell (1) being provided with a second step (12); A central shaft (2) is arranged at one end of the shell (1), the central shaft (2) comprising a central section (21) and a first end-sealing section (22), the central section (21) extending in the axial direction and arranged in the cavity, the first end-sealing section (22) being fixedly connected to one end of the central section (21); a gasket (3) disposed at the other end of the shell (1), the gasket (3) comprising a connecting section (31) and a second sealing section (32), the connecting section (31) extending in the axial direction, being disposed in the cavity and being connected to the central section (21), the second sealing section (32) being fixedly connected to one end of the connecting section (31); A gap is provided between the first sealing section (22) and one end of the shell (1), and / or between the second sealing section (32) and the other end of the shell (1); A first elastic member (4), the first elastic member (4) being provided between the first step (11) and the first end-sealing section (22), and / or between the first step (11) and the second end-sealing section (32); The second elastic member (5) is provided between the second step (12) and the first sealing section (22), and / or between the second step (12) and the second sealing section (32).
2. The high-rigidity vibration isolator according to claim 1, characterized in that: The high-rigidity vibration isolator comprises four of the first elastic members (4), Any two of the first elastic members (4) are arranged in sequence along the axial direction, with one end abutting against the first step (11) and the other end abutting against the first end-sealing section (22); Any two of the second elastic members (5) are arranged in sequence along the axial direction, with one end abutting against the first step (11) and the other end abutting against the second end-sealing section (32).
3. The high-rigidity vibration isolator according to claim 1, characterized in that: The first elastic member (4) is metal rubber.
4. The high-rigidity vibration isolator according to claim 1, characterized in that: The second elastic member (5) is a disc spring.
5. The high-rigidity vibration isolator according to claim 1, characterized in that: The central section (21) is fixedly connected to the connecting section (31); the second step (12) protrudes from the second elastic member (5); and the second step (12) is provided with a mounting hole (121).
6. The high-rigidity vibration isolator according to claim 1, characterized in that: In the radial direction, a gap is provided between the central section (21) and the first step (11).
7. The high-rigidity vibration isolator according to claim 1, characterized in that: The high-rigidity vibration isolator further comprises a gland (6), wherein the gland (6) comprises: a radial section (61), one end of the radial section (61) abutting against the first elastic member (4), an axial section (62), one end of the axial section (62) being fixedly connected to the outer side of the radial section (61), and the other end of the axial section (62) being in contact with the second elastic member (5); The gland (6) is provided between the first sealing section (22) and one end of the shell (1), and / or between the second sealing section (32) and the other end of the shell (1).