A compliant vibration isolation device comprising a hooke's joint and a spring

Abstract

The utility model discloses a hooke's joint and spring compound's soft vibration isolation device relates to vibration isolation equipment technical field, aims at solving the problem that the existing vibration isolation device can not realize horizontal direction decoupling, and the vibration isolation effect is poor. It includes main body unloading device, and the main body unloading device is by hooke's joint soft mechanism, recessed plate, spring, adjusting nut that cooperate and connect gradually compose, and the main body unloading device is installed between upper and lower bearing plate, and the upper and lower bearing plate set position structure and antifriction part, and hooke's joint metal parts are treated through anticorrosion wear -resisting, and the spring outside can add protective sleeve. The device realizes horizontal decoupling through hooke's joint soft mechanism, and spring absorbs vibration, and adjusting nut adjusts rigidity, and four -way distribution can even load, and guarantee vibration isolation stability.

Description

Technical Field

[0001] This utility model provides a compliant vibration isolation device, and particularly relates to a compliant vibration isolation device that combines a Hooke hinge and a spring. Background Technology

[0002] Hooke hinge and spring composite compliant vibration isolation devices and similar vibration isolation equipment are a type of mechanical device used in industrial equipment and precision instrument scenarios. Through structural design, they weaken the transmission of horizontal and vertical vibrations, preventing vibrations from affecting the accuracy or lifespan of the equipment. Their core function is to reduce vibration interference as much as possible while bearing the load. They are widely used in precision machining, scientific research experiments and other fields that require vibration isolation performance.

[0003] The basic structure of existing vibration isolation devices is mostly composed of simple hinged components, a single spring, and a basic load-bearing component. The hinged component only has the function of basic rotation and has no special adaptation structure to cooperate with the spring. The spring is mostly directly installed and lacks radial limit. The load-bearing component lacks precise positioning and friction reduction design. The overall structure is scattered and has not formed a systematic functional component. Utility Model Content

[0004] In order to solve the above problems, this application provides a compliant vibration isolation device that combines a Hooke hinge and a spring, which solves the problems of existing vibration isolation devices being unable to achieve horizontal decoupling, mutual interference of vibrations, and poor vibration isolation effect.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a compliant vibration isolation device combining a Hooke hinge and a spring, including a main force-relieving device, which is composed of a Hooke hinge compliant mechanism, a grooved plate, a spring, and an adjusting nut; the Hooke hinge compliant mechanism, the grooved plate, the spring, and the adjusting nut are connected in sequence, and the horizontal decoupling problem is solved by the structural characteristics of the Hooke hinge compliant mechanism and the stiffness of the spring itself.

[0006] Preferably, the Hooke hinge compliant mechanism is a component with a specific hinge structure, which can realize flexible rotation in multiple directions, provide a rotational basis for horizontal decoupling, and is adapted to the groove plate to play a limiting and synergistic role for the spring.

[0007] Preferably, the grooved plate is an annular or plate-shaped structure adapted to the shape of the Hooke hinge compliant mechanism, and is provided with a connecting structure that cooperates with the Hooke hinge compliant mechanism and the spring, which can limit the radial displacement of the Hooke hinge compliant mechanism and the spring and enhance the overall stability of the device.

[0008] Preferably, the spring is a helical spring, which is sleeved on the outside of the Hooke hinge compliant mechanism or arranged coaxially with the Hooke hinge compliant mechanism. It absorbs vibration energy by its own elastic deformation and works with the Hooke hinge compliant mechanism to achieve vibration isolation function in the horizontal and vertical directions. Its two ends are in contact with the groove plate, adjusting nut or other matching parts respectively.

[0009] Preferably, the adjusting nut is a component with internal threads, which is adapted to connect with the spring or other externally threaded structures of the device. By rotating the adjusting nut, the pre-compression of the spring can be changed, thereby adjusting the vibration isolation stiffness and initial position of the device to adapt to different loads and vibration isolation requirements.

[0010] Preferably, the main load-bearing device is installed between the upper and lower bearing plates or other supporting structures. The upper and lower bearing plates are used to connect external equipment and vibration isolation devices, providing an installation foundation and load transfer path for the vibration isolation devices. The upper and lower bearing plates can be made of metal, with rust-proof and wear-resistant surface treatment, and internal reinforcing structures can be pre-embedded to improve load-bearing capacity.

[0011] Preferably, the connection between the upper and lower bearing plates and the main unloading device is equipped with a positioning structure, such as a positioning pin, guide slope, or groove, to ensure the accurate installation of the main unloading device and improve the overall installation stability and vibration isolation synergy of the device.

[0012] Preferably, the movable connection between the upper and lower bearing plates and the main unloading device is equipped with self-lubricating bushings, wear-resistant gaskets or other friction-reducing components to reduce friction during relative movement, reduce energy loss, and improve the response sensitivity and service life of the vibration isolation device.

[0013] Preferably, the metal parts of the Hooke hinge compliant mechanism, groove plate, spring, and adjusting nut are treated with anti-corrosion and wear-resistant processes, such as galvanizing or spraying anti-corrosion coating, to improve the device's corrosion and wear resistance in harsh environments and ensure long-term stable vibration isolation performance.

[0014] Preferably, a protective sleeve can be added to the outside of the spring. The two ends of the protective sleeve are connected to the groove plate, adjusting nut or upper and lower bearing plates by corresponding structural snap-fit, bolt connection or other adapted connection methods. The protective sleeve can be made of metal or polymer wear-resistant material to protect the spring from external dust, impurities and mechanical damage. At the same time, it can help limit the radial deformation of the spring and enhance vibration isolation stability.

[0015] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages compared with the prior art: When this compliant vibration isolation device, which combines a Hooke hinge and a spring, is in use, the main unloading device utilizes the compliant mechanism of the Hooke hinge, the grooved plate, the spring, and the adjusting nut to solve horizontal decoupling by leveraging the rotational characteristics of the Hooke hinge and the stiffness of the spring. The helical spring absorbs vibration energy. Simultaneously, the main unloading device is installed between the upper and lower bearing plates, which connect external equipment to the existing vibration isolation components. The positioning structure ensures precise installation, and the friction-reducing components minimize motion losses. The corrosion-resistant and wear-resistant treatment of metal components such as the Hooke hinge, along with the protective sleeve on the outside of the spring, enhances the stability and lifespan of the device. Working in synergy with the existing vibration isolation components, through their respective structural characteristics, they work together to reduce horizontal and vertical vibrations during equipment operation, achieving highly efficient vibration isolation.

[0016] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0017] Figure 1 This is a three-dimensional installation diagram of a compliant vibration isolation device combining a Hooke hinge and a spring according to this utility model. Figure 2 This is a schematic diagram of the installation of the force-dissipating part of a compliant vibration isolation device that combines a Hooke hinge and a spring, according to this utility model. Figure 3 This is a three-dimensional schematic diagram of the spring connection part of a compliant vibration isolation device that combines a Hooke hinge and a spring, according to this utility model. Figure 4 This is a cross-sectional view of the spring connection portion of a compliant vibration isolation device combining a Hooke's hinge and a spring, according to this utility model.

[0018] As shown in the figure: 1. Main unloading device; 2. Hooke's hinge compliant mechanism; 3. Groove plate; 4. Spring; 5. Adjusting nut. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] like Figure 1 and Figure 2 As shown, a compliant vibration isolation device combining a Hooke's hinge and a spring includes a main force-relieving device 1. The main force-relieving device 1 consists of a Hooke's hinge compliant mechanism 2, a grooved plate 3, a spring 4, and an adjusting nut 5. The Hooke's hinge compliant mechanism 2, the grooved plate 3, the spring 4, and the adjusting nut 5 are sequentially connected. The horizontal decoupling problem is solved by utilizing the structural characteristics of the Hooke's hinge compliant mechanism 2 and the inherent stiffness of the spring 4. The Hooke's hinge compliant mechanism 2 is a component with a specific hinge structure, capable of flexible rotation in multiple directions, providing a rotational basis for horizontal decoupling. It is adapted to and connected to the grooved plate 3 and provides limiting and coordination for the spring 4. The grooved plate 3 is annular or... A plate-shaped structure adapted to the shape of the Hooke hinge compliant mechanism 2 is provided, with a connecting structure that cooperates with the Hooke hinge compliant mechanism 2 and the spring 4 to limit the radial displacement of the two and increase stability; the spring 4 is a helical spring, sleeved on the outside of the Hooke hinge compliant mechanism 2 or arranged coaxially, absorbing vibration through elastic deformation, and cooperating with the Hooke hinge compliant mechanism 2 to achieve horizontal and vertical vibration isolation, with both ends in contact with the groove plate 3, adjusting nut 5 or other compatible parts respectively; the adjusting nut 5 is a part with internal thread, adapted to the spring 4 or other external thread structure of the device, and rotation can change the pre-compression of the spring 4 to adjust the vibration isolation stiffness and initial position to meet different needs.

[0023] In this embodiment, one end of the Hooke hinge compliant mechanism 2 is adapted to the external support structure or the upper bearing plate, and the other end is embedded in the pre-set fitting groove of the groove plate 3 to achieve precise docking between the two. The groove plate 3 has an annular step on the side facing the spring 4. One end of the spring 4 is sleeved on the outside of the annular step and fits against the end face of the groove plate 3. The other end of the spring 4 contacts the end face of the adjusting nut 5. The adjusting nut 5 is screwed into the fixed shaft or connecting rod with external thread in the device through the internal thread, forming a sequential and coaxial connection relationship of "Hooke hinge compliant mechanism 2-groove plate 3-spring 4-adjusting nut 5", ensuring that each component is distributed along the same axis and the force transmission is more uniform. From the implementation points, it is necessary to ensure that the fitting gap between the Hooke hinge compliant mechanism 2 and the groove plate 3 is controlled within 0.1-0.3mm to avoid excessive gap causing horizontal swaying and affecting the decoupling effect; when the spring 4 is sleeved, it must be kept coaxial with the Hooke hinge compliant mechanism 2, and the coaxiality error should not exceed 0.2mm to prevent uneven force on the spring 4 and resulting in uneven wear; after the adjusting nut 5 is installed, it needs to be pre-tightened and adjusted. According to the actual load requirements, the pre-compression of the spring 4 should be controlled within ±5% of the design value to ensure that the initial vibration isolation stiffness meets the usage requirements. From the perspective of innovation and beneficial effects, the Hooke hinge compliant mechanism 2, with its multi-directional flexible rotation characteristics, provides a core rotational basis for horizontal decoupling, solving the problem of limited rotation of hinged components and inability to achieve horizontal decoupling in existing devices. Its adaptive connection with the grooved plate 3 further enhances the rotational stability in the horizontal direction. The grooved plate 3, through its annular structure and adaptive connection design, not only restricts the radial displacement of the Hooke hinge compliant mechanism 2, preventing it from shifting during vibration, but also provides a stable support end face for the spring 4, preventing radial movement of the spring 4, thus compensating for the lack of a core component in existing devices. The device overcomes the shortcomings of component limitation and poor structural stability. Spring 4 adopts a helical spring and works in conjunction with the Hooke hinge compliant mechanism 2. While absorbing vertical vibration energy, it also achieves dual vibration isolation in both horizontal and vertical directions with the horizontal decoupling function of the Hooke hinge. Compared with existing single-direction vibration isolation devices, it has a wider range of applicable scenarios. The adjusting nut 5 adjusts the vibration isolation stiffness by changing the pre-compression of spring 4, which can flexibly adapt to different loads and vibration conditions. This solves the problems of fixed stiffness and poor adaptability of existing devices. The synergistic effect of each component comprehensively improves the decoupling capability, stability and adaptability of the vibration isolation device.

[0024] like Figure 3 and Figure 4As shown, the main unloading device 1 of the vibration isolation device is installed between the upper and lower bearing plates or other supporting structures. The upper and lower bearing plates connect external equipment and the vibration isolation device, providing the installation foundation and load transfer path. They are made of metal with rust-proof and wear-resistant surface treatment, and internal reinforcement structures can be pre-embedded to improve load-bearing capacity. The connection between the upper and lower bearing plates and the main unloading device 1 is equipped with positioning pins, guide ramps, and slots to ensure accurate installation and improve installation stability and vibration isolation synergy. The movable connection between the upper and lower bearing plates and the main unloading device 1 is equipped with self-lubricating bushings and wear-resistant gaskets to reduce wear. The friction components reduce friction and energy consumption, and improve response sensitivity and service life. The metal parts of the Hooke hinge compliant mechanism 2, groove plate 3, spring 4, and adjusting nut 5 are treated with galvanizing and anti-corrosion coating to improve corrosion resistance and wear resistance in harsh environments and ensure long-term stable vibration isolation performance. A protective sleeve can be added to the outside of the spring 4, and the two ends are connected to the groove plate 3, adjusting nut 5 or the upper and lower bearing plates by corresponding structures such as snap-fit ​​or bolt connection. The protective sleeve is made of metal or high polymer wear-resistant material to protect the spring 4 from external influences, help limit its radial deformation, and enhance vibration isolation stability.

[0025] In this embodiment, the top of the main unloading device 1 is connected to the pre-set mounting holes of the upper bearing plate via the Hooke hinge compliant mechanism 2, and the bottom is screwed into the externally threaded fixing post on the surface of the lower bearing plate via the adjusting nut 5, so that the main unloading device 1 is vertically mounted between the upper and lower bearing plates. Mounting holes can also be opened on the edges of the upper and lower bearing plates for fixing to external equipment bases or ground foundation bolts. The positioning pins at the connection between the upper and lower bearing plates and the main unloading device 1 need to be inserted into the corresponding pin holes opened between the top flange of the Hooke hinge compliant mechanism 2 and the upper bearing plate, and between the adjusting nut 5 and the lower bearing plate. The guide slope fits the mating surface between the Hooke hinge compliant mechanism 2 and the upper bearing plate, and the slot engages the bottom edge of the main unloading device 1 to form multiple positioning. The self-lubricating bushing is sleeved on the outside of the positioning pin, and the wear-resistant gasket is placed on the contact end face between the upper and lower bearing plates and the main unloading device 1 to ensure smooth rotation of the movable connection parts. From the implementation points, the reinforcing structure embedded in the upper and lower load-bearing plates must be welded and fixed to the metal material of the load-bearing plates. The weld joints must be inspected for flaws to avoid incomplete welding affecting the load-bearing capacity. Before the anti-corrosion and wear-resistant treatment of metal parts, surface rust removal must be performed, and the rust removal grade must reach Sa2.5 level to ensure that the coating or galvanized layer is firmly adhered. When installing the protective sleeve, it must be ensured that the gap between it and the outside of the spring 4 does not exceed 0.5mm, so as to avoid squeezing the spring 4 and affecting deformation, and to effectively limit radial displacement. From the perspective of innovation and beneficial effects, the upper and lower load-bearing plates adopt metal materials and internal reinforcement structures, which solves the problems of weak load-bearing capacity and easy deformation of existing support structures. The surface anti-rust and wear-resistant treatment extends the service life of the load-bearing plates and provides a stable installation foundation for the entire device. Positioning structures such as positioning pins, guide ramps, and slots significantly reduce the installation deviation of the main unloading device 1 compared with the existing non-positioning installation method, ensuring the coordinated work of each component and improving the consistency of vibration isolation effect. The setting of self-lubricating bushings and wear-resistant gaskets reduces friction loss of moving parts, solves the defects of existing devices caused by high friction leading to lag in response and easy wear of components, and improves the vibration isolation response sensitivity and device life. The anti-corrosion and wear-resistant treatment of metal components and the protective sleeve of spring 4 enable the device to adapt to harsh environments such as humidity and dust, avoid component corrosion or spring damage affecting vibration isolation performance, solve the problem of poor environmental adaptability of existing devices, and all structures work together to ensure the long-term stable operation of the device under complex working conditions.

[0026] When this compliant vibration isolation device, combining a Hooke's hinge and a spring, works in conjunction with a horizontal stiffness adjustment mechanism to achieve vibration isolation, the Hooke's hinge compliant mechanism 2 in the main unloading device 1 provides a rotational basis for horizontal decoupling due to its multi-directional flexible rotational characteristics. The horizontal stiffness adjustment mechanism, through its own frame structure (such as vertical rods and transverse connecting beams), enhances the overall horizontal stiffness. The two work synergistically: the Hooke's hinge compliant mechanism 2 eliminates mutual interference between different horizontal vibrations, the horizontal stiffness adjustment mechanism resists horizontal vibration deviation under heavy loads, and the spring 4 in the main unloading device 1 absorbs vertical vibration energy through elastic deformation. The grooved plate 3 restricts the radial displacement of the Hooke's hinge compliant mechanism 2 and the spring 4, and the adjusting nut 5 adjusts the pre-compression of the spring 4 for optimal fit. To meet stiffness requirements, the upper and lower load-bearing plates provide a stable installation foundation and load transfer path, forming a synergistic vibration isolation system with horizontal decoupling, stiffness matching, and vertical vibration absorption. If multiple sets of this vibration isolation device are distributed in four directions along the bottom surface of external equipment or load-bearing platform, it can form a uniform support at four or more points. On the one hand, it can decouple and suppress horizontal vibrations in all four directions, avoiding local vibration concentration. On the other hand, it can evenly distribute large loads to each vibration isolation device, preventing the vibration isolation from failing due to overload of a single device. At the same time, the symmetry of the four-way distribution improves the overall structure's anti-overturning ability, reduces device tilting caused by uneven vibration, and further ensures the stability and consistency of the vibration isolation effect, adapting to the multi-directional and uniform vibration isolation requirements of heavy equipment or precision instruments.

[0027] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the claims.

Claims

1. A compliant vibration isolation device combining a Hooke's hinge and a spring, characterized in that, The device includes a main unloading device (1), which is composed of a Hooke hinge compliant mechanism (2), a groove plate (3), a spring (4), and an adjusting nut (5). The Hooke hinge compliant mechanism (2), the groove plate (3), the spring (4), and the adjusting nut (5) are connected in sequence. The horizontal decoupling problem is solved by the structural characteristics of the Hooke hinge compliant mechanism (2) and the stiffness of the spring (4).

2. The compliant vibration isolation device combining a Hooke's hinge and a spring according to claim 1, characterized in that, The Hooke hinge compliant mechanism (2) is a component with a specific hinge structure, which can realize flexible rotation in multiple directions, provide a rotation basis for horizontal decoupling, and is adapted to the groove plate (3) to play a limiting and synergistic role on the spring (4).

3. The compliant vibration isolation device combining a Hooke's hinge and a spring according to claim 1, characterized in that, The groove plate (3) is a ring-shaped or plate-shaped structure adapted to the shape of the Hooke hinge compliant mechanism (2). It is equipped with a connection structure that cooperates with the Hooke hinge compliant mechanism (2) and the spring (4), which can limit the radial displacement of the Hooke hinge compliant mechanism (2) and the spring (4) and enhance the overall stability of the device.

4. The compliant vibration isolation device combining a Hooke's hinge and a spring according to claim 1, characterized in that, The spring (4) is a helical spring, which is sleeved on the outside of the Hooke hinge compliant mechanism (2) or arranged coaxially with the Hooke hinge compliant mechanism (2). It absorbs vibration energy by its own elastic deformation and works with the Hooke hinge compliant mechanism (2) to achieve vibration isolation function in the horizontal and vertical directions. Its two ends are in contact with the groove plate (3), the adjusting nut (5) or other compatible parts, respectively.

5. A compliant vibration isolation device combining a Hooke's hinge and a spring according to claim 1, characterized in that, The adjusting nut (5) is a component with internal threads, which is adapted to the spring (4) or other external threaded structures of the device. By rotating the adjusting nut (5), the pre-compression of the spring (4) can be changed, thereby adjusting the vibration isolation stiffness and initial position of the device to adapt to different loads and vibration isolation requirements.

6. The compliant vibration isolation device combining a Hooke's hinge and a spring according to claim 1, characterized in that, The main unloading device (1) is installed between the upper and lower bearing plates or other supporting structures. The upper and lower bearing plates are used to connect external equipment and vibration isolation devices, and provide the installation foundation and load transmission path for the vibration isolation devices. The upper and lower bearing plates are made of metal, and the surface is treated with anti-rust and wear-resistant treatment. The internal reinforcing structure is embedded to improve the bearing capacity.

7. A compliant vibration isolation device combining a Hooke's hinge and a spring according to claim 6, characterized in that, The connection between the upper and lower bearing plates and the main unloading device (1) is provided with positioning structures, such as positioning pins, guide slopes, and slots, to ensure the accurate installation of the main unloading device (1) and improve the overall installation stability and vibration isolation synergy of the device.

8. A compliant vibration isolation device combining a Hooke's hinge and a spring according to claim 6, characterized in that, The movable connection between the upper and lower bearing plates and the main unloading device (1) is provided with self-lubricating bushings, wear-resistant pads or other friction-reducing components to reduce friction during relative movement, reduce energy loss, and improve the response sensitivity and service life of the vibration isolation device.

9. A compliant vibration isolation device combining a Hooke's hinge and a spring according to claim 1, characterized in that, The metal parts of the Hooke hinge compliant mechanism (2), groove plate (3), spring (4), and adjusting nut (5) are treated with anti-corrosion and wear-resistant processes, such as galvanizing and spraying anti-corrosion coating processes, to improve the device's corrosion resistance and wear resistance in harsh environments and ensure long-term stable vibration isolation performance.

10. A compliant vibration isolation device combining a Hooke's hinge and a spring according to claim 1, characterized in that, A protective sleeve is added to the outside of the spring (4). The two ends of the protective sleeve are connected to the groove plate (3), the adjusting nut (5) or the upper and lower bearing plates by corresponding structural snap-fit, bolt connection or other compatible connection methods. The protective sleeve can be made of metal or polymer wear-resistant material to protect the spring (4) from external dust, impurities and mechanical damage. At the same time, it can help limit the radial deformation of the spring (4) and enhance the vibration isolation stability.

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