Damper and damper connection structure
By using a rubber and metal composite structure for the vibration damper, and utilizing the cooperation between the metal pad and the conical part, the contradiction between low frequency and high overload of the rubber vibration damper is resolved, achieving a balance between low frequency and high overload.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING ZHITIAN XINHANG TECH CO LTD
- Filing Date
- 2025-08-04
- Publication Date
- 2026-06-19
Smart Images
Figure CN224380489U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vibration reduction technology, and in particular to a vibration damper and vibration reduction connection structure. Background Technology
[0002] Vibration dampers (also known as dampers or vibration isolators) are core components in engineering systems. Their core function is to dissipate vibration energy, suppress impact transmission, and protect equipment and structural safety.
[0003] Among them, rubber vibration dampers play a key role in the aerospace field due to their unique elasticity and damping characteristics, especially in vibration control, impact protection and equipment stability assurance in extreme environments.
[0004] The applicant has discovered that the existing technology has at least the following technical problems: For simple rubber vibration dampers, there is a contradiction between low-frequency vibration isolation performance and high overload bearing capacity, which essentially stems from the unique nonlinear viscoelasticity of rubber materials and the physical limitations under large deformation. How to solve the problem of not being able to simultaneously achieve low-frequency and high overload characteristics in vibration dampers has been a persistent challenge for researchers. Utility Model Content
[0005] The purpose of this utility model is to provide a vibration damper and a vibration damping connection structure to solve the technical problem that the low-frequency and high overload characteristics of vibration dampers in the prior art cannot be simultaneously taken into account; the various technical effects of the preferred technical solutions among the many technical solutions provided by this utility model are described in detail below.
[0006] To achieve the above objectives, the present invention provides the following technical solution:
[0007] The vibration damper provided by this utility model includes an inner core, a metal gasket, a gasket colloid, a base colloid, and a metal base for connecting to a load, wherein:
[0008] The metal base is sleeved outside the inner core, and the base colloid is fixed between the inner core and the metal base;
[0009] The base colloid includes a conical portion that protrudes from the upper end of the metal base;
[0010] The metal gasket is in rigid contact with the upper end of the inner core and is detachably fixed, and the metal gasket abuts against the narrow end of the conical part; in the initial state, there is a gap between the gasket colloid and the base colloid; under vertical high overload conditions, the gasket colloid comes into contact with the base colloid.
[0011] Preferably, the base colloid further includes a ring body, which is fixedly connected to the metal base. The ring body is located outside the conical portion, and the conical portion protrudes from the upper end of the ring body.
[0012] Initially, there is a longitudinal gap between the gasket and the ring; under high vertical overload conditions, the gasket and the ring come into contact under pressure.
[0013] Preferably, the ring body and the conical part are integrally vulcanized structures.
[0014] Preferably, the outer diameter of the conical portion gradually increases in the direction away from the metal gasket.
[0015] Preferably, the gasket colloid is provided with a clearance groove, which is opened on the side of the gasket colloid facing the base colloid.
[0016] Preferably, the shock absorber further includes a buffer ring, which is sleeved outside the inner core;
[0017] The base colloid also includes an inner ring portion, which is fixed to the inner wall of the metal base;
[0018] In the initial state, there is a horizontal gap between the buffer ring and the inner ring; under radial high overload conditions, the buffer ring and the inner ring come into contact with each other by compression.
[0019] Preferably, the axial cross-section of the buffer ring is trapezoidal, and the outer diameter of the buffer ring gradually decreases as it approaches the position corresponding to the inner ring portion.
[0020] Preferably, the shaft cavity of the metal gasket and the shaft cavity of the inner core are coaxially arranged, and the locking member can pass through the shaft cavity of the metal gasket and the shaft cavity of the inner core and detachably fix them together.
[0021] Preferably, the metal gasket comprises an integrally formed gasket body and a positioning post, wherein:
[0022] The positioning post is located in the middle of the gasket body. The outer diameter of the gasket body is larger than that of the positioning post. The gasket body is sleeved on the outside of the positioning post. The positioning post is detachably fixed to the inner core, and the positioning post abuts against the narrow end of the conical part.
[0023] This embodiment provides a vibration damping connection structure, including at least two of the above-mentioned vibration dampers, and two or more connecting lugs are provided on the load, wherein:
[0024] The connecting lug has an internal threaded hole that passes through its upper and lower surfaces. The metal bases of the two dampers are threadedly connected to the internal threaded holes and arranged along the axial direction of the internal thread. A locking member passes through the two dampers and detachably fixes them together.
[0025] The multiple connecting lugs and the damper work together to support and fix the load.
[0026] Compared with the prior art, the vibration damper and vibration damping connection structure provided by this utility model have the following beneficial effects: The vibration damper adopts a rubber and metal composite structure. Under vertical vibration conditions, the rubber pad does not contact the rubber base. For the rubber base, a large static compression deformation is designed within the allowable space, and a low dynamic stiffness is achieved near the static operating point, thereby significantly reducing the natural frequency and realizing the low-frequency performance of the vibration damper in the vertical direction. As the stress gradually increases, the metal rubber pad squeezes the conical part, and the axial strain (deformation) along the conical part gradually changes. Under high vertical overload conditions, the rubber pad and the rubber base come into contact, and the effective shape factor of the rubber pad and the rubber base increases sharply, quickly entering the nonlinear region. The stiffness of the rubber increases nonlinearly, restricting the vertical displacement of the vibration damper and performing buffering and limiting, thus realizing the low-frequency and high overload performance of the vibration damper in the axial direction. Attached Figure Description
[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0028] Figure 1 This is a schematic diagram of the structure of the two vibration dampers in this embodiment;
[0029] Figure 2 This is a top view of the two vibration dampers in this embodiment;
[0030] Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure at point AA;
[0031] Figure 4 This is a schematic diagram of the locking mechanism connecting the two shock absorbers;
[0032] Figure 5 This is a schematic diagram of the axial cross-sectional structure of the locking component connecting the two vibration dampers;
[0033] Figure 6 This is a schematic diagram of the connection between the load and the vibration damper.
[0034] In the diagram: 100, shock absorber; 200, support base; 1, inner core; 2, metal gasket; 21, gasket body; 22, positioning post; 3, gasket colloid; 31, clearance slot; 4, base colloid; 41, conical part; 42, ring body; 43, inner ring part; 5, metal base; 51, external thread part; 6, buffer ring; 7, locking element; 8, load; 9, connecting lug; 91, internal thread hole. Detailed Implementation
[0035] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0036] In the description of this utility model, it should be understood that the terms "center," "length," "width," "height," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and "side," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0037] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0038] This utility model provides a vibration damper and a vibration damping connection structure, which can achieve low-frequency and high overload performance in the axial direction of the vibration damper.
[0039] The following is combined Figures 1-6 The technical solution provided by this utility model will be described in more detail.
[0040] Example 1:
[0041] The vibration damper 100 provided by this utility model includes an inner core 1, a metal pad 2, a pad colloid 3, a base colloid 4, and a metal base 5 for connecting with a load 8. The metal base 5 is sleeved outside the inner core 1, and the base colloid 4 is fixed between the inner core 1 and the metal base 5. The base colloid 4 includes a conical portion 41, which protrudes from the upper end of the metal base 5. The metal pad 2 is in rigid contact with the upper end of the inner core 1 and is detachably fixed, and the metal pad 2 abuts against the narrow end of the conical portion 41. In the initial state, there is a gap between the pad colloid 3 and the base colloid 4. Under vertical high overload conditions, the pad colloid 3 and the base colloid 4 come into contact.
[0042] In this embodiment, the metal base 5, inner core 1, and base adhesive 4 are integrally formed by adhesive vulcanization; the metal gasket 2 and gasket adhesive 3 are integrally formed by adhesive vulcanization; the metal base 5 adopts a hexagonal structure, compatible with the corresponding model of standard open-end wrench. See also Figure 3 As shown, the lower end of the metal base 5 is provided with an external thread, which is adapted to the internal thread hole 91 of the load 8 (vibration equipment) connecting lug 9, saving installation space and ensuring the reliability of the connection.
[0043] As an optional implementation, see Figure 3 As shown, the base colloid 4 also includes a ring 42, which is integrally vulcanized with the conical part 41. The ring 42 is fixedly connected to the metal base 5. The ring 42 is located outside the conical part 41, and the conical part 41 protrudes from the upper end of the ring 42. In the initial state, there is a longitudinal gap between the gasket colloid 3 and the ring 42. Under vertical high overload conditions, the gasket colloid 3 and the ring 42 are pressed into contact.
[0044] In this embodiment, see Figure 3 As shown, in the initial state or under the initial vertical vibration conditions, there is a longitudinal gap between the gasket 3 and the ring 42, and the two do not contact each other. As the metal gasket 2 continuously squeezes the cone-shaped part 41, the cone-shaped part 41 slowly deforms until, under the condition of high vertical overload, the gasket 3 and the ring 42 are squeezed into contact.
[0045] As an optional implementation, see Figure 3 As shown, the outer diameter of the conical portion 41 gradually increases in the direction away from the metal gasket 2.
[0046] Compared to the columnar structure, the structure of the conical portion 41, as the stress gradually increases, causes the metal gasket 2 to compress the conical portion 41, and the strain (deformation) along the axial direction of the conical portion 41 gradually changes.
[0047] As an optional implementation, see Figure 3 As shown, the gasket 3 is provided with a clearance slot 31, which is located on the side of the gasket 3 facing the base 4.
[0048] The stepped hole structure is formed between the clearance slot 31 and the lower surface of the gasket 3, which can make way for the cone-shaped part 41 of the base 4, so that the gasket 3 and the ring 42 can be squeezed and contacted under vertical high overload conditions.
[0049] In the above-described structure of this embodiment, the metal surface of the metal gasket 2 is in rigid contact with the upper metal surface of the inner core 1, and the inner holes are aligned; a dynamic displacement space is left between the gasket colloid 3 and the base colloid 4. Under vertical vibration conditions, the gasket colloid 3 does not contact the base colloid 4. By rationally designing the shape coefficient of the base colloid 4, a larger static compression deformation is designed within the allowable space, and a lower dynamic stiffness is achieved near the static operating point, thereby significantly reducing the natural frequency and realizing the low-frequency performance of the vibration damper 100 in the vertical direction. Under high overload conditions in the vertical direction, the gasket colloid 3 contacts the ring 42 of the base colloid 4, and the effective shape coefficients of the gasket colloid 3 and the base colloid 4 increase sharply, quickly entering the nonlinear region. The stiffness of the colloid increases nonlinearly, restricting the vertical displacement of the vibration damper 100 and performing buffering and limiting, thus realizing the low-frequency and high overload performance of the vibration damper 100 in the axial direction. To meet different axial low-frequency and high overload conditions, the cross-sectional shape and hardness of the gasket colloid 3 and the base colloid 4 can be adaptively adjusted.
[0050] As an optional implementation, see Figure 3 As shown, the shaft cavity of the metal gasket 2 and the shaft cavity of the inner core 1 are arranged coaxially, and the locking member 7 can pass through the shaft cavity of the metal gasket 2 and the shaft cavity of the inner core 1 and detachably fix them together.
[0051] Locking element 7 can be a bolt or screw structure, see [link / reference] Figure 3 As shown, the locking member 7 passes through the shaft cavity of the metal washer 2 and the shaft cavity of the inner core 1. Specifically, the metal base 5 of the damper 100 is threadedly connected to the connecting lug 9 of the load 8. The locking member 7 passes through the two dampers 100 to achieve a fixed connection between the damper 100 and the load 8.
[0052] As an optional implementation, see Figure 3 As shown, the metal gasket 2 includes an integrally formed gasket body 21 and a positioning post 22, wherein: the positioning post 22 is located in the middle of the gasket body 21, the outer diameter of the gasket body 21 is larger than the positioning post 22, the gasket colloid 3 is sleeved on the outside of the positioning post 22, the positioning post 22 is detachably fixedly connected to the inner core 1, and the positioning post 22 abuts against the narrow end of the conical part 41.
[0053] The structure of the metal gasket 2 facilitates the fixing of the gasket colloid 3. The gasket colloid 3 is sleeved outside the positioning post 22. In the initial state, there is a gap between the gasket colloid 3 and the base colloid 4, and the positioning post 22 abuts against the narrow end of the conical part 41. Under vertical high overload conditions, the metal gasket 2 and the conical part 41 are continuously squeezed until the gasket colloid 3 contacts the base colloid 4 (ring 42). The effective shape factor of the gasket colloid 3 and the base colloid 4 increases sharply, quickly entering the nonlinear region. The stiffness of the colloid increases nonlinearly, restricting the vertical displacement of the vibration damper 100 and performing buffering and limiting, thus realizing the low-frequency and high overload performance of the vibration damper 100 in the axial direction.
[0054] As an optional implementation, see Figure 3 As shown, the damper 100 of this embodiment also includes a buffer ring 6, which is sleeved on the outside of the inner core 1; the base colloid 4 also includes an inner ring portion 43, which is fixed on the inner wall of the metal base 5; in the initial state, there is a horizontal gap between the buffer ring 6 and the inner ring portion 43; under radial high overload conditions, the buffer ring 6 and the inner ring portion 43 are in compression contact.
[0055] The buffer ring 6 is also made of colloid and is vulcanized separately.
[0056] The buffer ring 6 is located inside the cavity of the base colloid 4, and is fitted and fixed on the outer wall of the inner core 1, leaving a dynamic displacement space with the inner wall of the inner ring 43. Under radial vibration conditions, the buffer ring 6 does not contact the inner wall of the base colloid 4 (inner ring). By rationally designing the shape factor of the base colloid 4, a larger static compression deformation is designed within the allowable space, achieving lower dynamic stiffness near the static operating point, thereby significantly reducing the natural frequency and realizing the low-frequency performance of the vibration damper 100 in the radial direction. Under high radial overload conditions, the buffer ring 6 contacts the inner wall of the base colloid 4, and the effective shape factor of the buffer ring 6 and the base colloid 4 increases sharply, quickly entering the nonlinear region. The stiffness of the colloid increases nonlinearly, restricting the radial displacement of the vibration damper 100 and providing buffering and limiting, thus realizing the low-frequency and high overload performance of the vibration damper 100 in the radial direction. To meet different radial low-frequency and high overload conditions, the cross-sectional shape and colloid hardness of the base colloid 4 and the buffer ring 6 can be adaptively adjusted.
[0057] As an optional implementation, see Figure 3 As shown, the axial cross section of the buffer ring 6 is trapezoidal, and the outer diameter of the buffer ring 6 gradually decreases along the position close to the corresponding inner ring 43.
[0058] The above-described structure of the buffer ring 6 enables the following: as the stress gradually increases, the radial strain (deformation) of the buffer ring 6 gradually changes when the buffer ring 6 and the base colloid 4 are squeezed together.
[0059] Example 2:
[0060] See Figure 6 As shown, this embodiment provides a vibration damping connection structure, including at least two of the above-mentioned vibration dampers 100, and two or more connecting ears 9 are provided on the load 8, wherein: the connecting ears 9 have internal threaded holes 91 penetrating their upper and lower surfaces, the metal bases 5 of the two vibration dampers 100 are threadedly connected to the internal threaded holes 91 and arranged along the axial direction of the internal threaded holes 91, and a locking member 7 passes through the two vibration dampers 100 and detachably fixes them together; the cooperation structure of the multiple connecting ears 9 and the vibration dampers 100 supports and fixes the load 8.
[0061] See Figure 6 As shown, the lower shock absorber is fixedly connected to the support base 200, and the two shock absorbers 100 are arranged vertically and are both threadedly connected to the internal threaded hole 91 of the connecting ear 9.
[0062] Specifically, the installation of the shock absorber 100 and the load 8 is as follows: with the base colloids 4 of the two installed buffer rings 6 facing outward, use an open-end wrench to hold the metal base 5, and screw it onto both sides of the load 8 connecting ear 9 according to the specified torque through the external thread 51 on the metal base 5 and the internal thread hole 91 of the load 8 connecting ear 9.
[0063] Installation of the shock absorber 100 and the support 200: Place the two metal shims 2 with the shim 3 facing the support 200 on both sides of the load 8 connecting lug 9. Align the shaft cavity of the metal shims 2 with the inner hole of the support 200. Pass the specified length of fastening screw (locking member 7) through the shaft cavity and connect the shock absorber and the load 8 to the support 200 through the fastening screw.
[0064] The vibration damping connection structure in this embodiment uses the vibration damper 100 from Embodiment 1. The vibration damper 100 adopts a rubber and metal composite structure. Through optimized structural design, material formulation, and in-depth research on dynamic response characteristics, the problem of simultaneously achieving the contradictory characteristics of low frequency and large overload is solved. Meanwhile, the threaded connection between the vibration damper 100 and the load 8 connecting lug 9 meets the comprehensive requirements of miniaturized equipment for efficient assembly and disassembly, compact layout, and high reliability.
[0065] The specific features, structures, or characteristics described in this specification may be combined in any suitable manner in one or more embodiments or examples.
[0066] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0067] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. A damper characterized by, It includes an inner core, a metal gasket, a gasket colloid, a base colloid, and a metal base for connection with the load, wherein: The metal base is sleeved outside the inner core, and the base colloid is fixed between the inner core and the metal base; The base colloid includes a conical portion that protrudes from the upper end of the metal base; The metal gasket is in rigid contact with the upper end of the inner core and is detachably fixed, and the metal gasket abuts against the narrow end of the conical part; in the initial state, there is a gap between the gasket colloid and the base colloid; under vertical high overload conditions, the gasket colloid comes into contact with the base colloid.
2. The damper of claim 1, wherein The base colloid also includes a ring body, which is fixedly connected to the metal base. The ring body is located outside the conical portion, and the conical portion protrudes from the upper end of the ring body. Initially, there is a longitudinal gap between the gasket and the ring; under high vertical overload conditions, the gasket and the ring come into contact under pressure.
3. The damper of claim 2, wherein The ring body and the cone-shaped part are integrally vulcanized structures.
4. The damper of claim 1, wherein The outer diameter of the conical portion gradually increases in the direction away from the metal gasket.
5. The damper according to claim 1 or 4, characterized in that The gasket colloid is provided with a clearance groove, which is opened on the side of the gasket colloid facing the base colloid.
6. The damper of claim 1, wherein The vibration damper also includes a buffer ring, which is sleeved outside the inner core; The base colloid also includes an inner ring portion, which is fixed to the inner wall of the metal base; In the initial state, there is a horizontal gap between the buffer ring and the inner ring; under radial high overload conditions, the buffer ring and the inner ring come into contact with each other by compression.
7. The damper of claim 6, wherein The axial cross-section of the buffer ring is trapezoidal, and the outer diameter of the buffer ring gradually decreases as it approaches the corresponding inner ring portion.
8. The damper of claim 1, wherein The shaft cavity of the metal gasket is coaxially arranged with the shaft cavity of the inner core, and the locking member can pass through the shaft cavity of the metal gasket and the shaft cavity of the inner core and detachably fix them together.
9. The damper of claim 1, wherein The metal gasket includes an integrally formed gasket body and a positioning post, wherein: The positioning post is located in the middle of the gasket body. The outer diameter of the gasket body is larger than that of the positioning post. The gasket body is sleeved on the outside of the positioning post. The positioning post is detachably fixed to the inner core, and the positioning post abuts against the narrow end of the conical part.
10. A vibration-damping connection structure, characterized in that, Including at least two of the shock absorbers as described in any one of claims 1-9, wherein the load is provided with two or more connecting lugs, wherein: The connecting lug has an internal threaded hole that passes through its upper and lower surfaces. The metal bases of the two dampers are threadedly connected to the internal threaded holes and arranged along the axial direction of the internal thread. A locking member passes through the two dampers and detachably fixes them together. The multiple connecting lugs and the damper work together to support and fix the load.