Three-way vibration isolation composite support and construction method thereof

Abstract

The invention provides a three-way vibration isolation composite support and a construction method thereof. The three-way vibration isolation composite support comprises a first supporting frame, a second supporting frame, a plurality of center bearing damping springs and a plurality of plate springs. The second supporting frame is arranged in the concave cavity of the first supporting frame; the center bearing damping springs are arranged in the concave cavity of the first supporting frame, and the top ends and the bottom ends of the center bearing damping springs are connected between the first supporting frame and the second supporting frame. The multiple plate springs are arranged on the periphery of the second supporting frame, and each plate spring is connected between the inner side wall of the first supporting frame and the outer side wall of the second supporting frame. According to the method, a first supporting frame is fixed to a foundation, then a center bearing damping spring is installed in a concave cavity of the first supporting frame, then a second supporting frame is hoisted to the top of the center bearing damping spring and connected with a plurality of plate springs on the periphery, and finally mechanical equipment is installed on the second supporting frame. According to the device and method, the anti-vibration performance of mechanical equipment is remarkably improved, and the application range is wide.

Description

Technical Field

[0001] This application relates to the field of mechanical equipment, and in particular to a three-dimensional vibration isolation composite bearing and its construction method. Background Technology

[0002] Substations, factories, commercial buildings, and other similar locations serve as the core of regional energy supply and operation. The vibrations generated by various large mechanical equipment within these facilities are transmitted through the building structure, including foundations, floors, and walls. This structural vibration transmission can not only affect the accuracy and lifespan of the equipment itself but also trigger floor vibrations and secondary noise in adjacent areas, severely disrupting the normal operation of other equipment and the normal work and lives of personnel.

[0003] In the field of vibration and noise control, noise transmitted through the air can usually be effectively blocked using mature technologies such as soundproof enclosures and sound barriers. However, solid-borne sound and vibration generated by equipment vibration transmitted through building structures are more difficult to control due to their complex propagation paths and slow attenuation. Therefore, it is necessary to install efficient vibration isolation devices along the vibration transmission path to achieve source control.

[0004] Currently, most mechanical equipment foundations are not equipped with dedicated vibration damping devices. Even in the few instances where vibration damping measures are used, they are often simple vibration isolation pads or general-purpose vibration isolators. These simple vibration damping components often have limited performance, making it difficult to precisely match them to the complex vibration characteristics of the equipment. They cannot effectively reduce broadband vibration transmission, and they are even less able to meet the stringent requirements of modern industry for vibration damping accuracy, equipment stability, and environmental adaptability. During equipment operation, vibration problems can easily lead to noise complaints, component fatigue damage, and even decreased operational accuracy. Therefore, developing and applying a new type of vibration damping equipment with better performance, stronger adaptability, and more stable vibration damping effect has become an urgent need to solve the vibration problems of industrial equipment and ensure a quiet production environment and long-term efficient operation of equipment.

[0005] Traditional vibration reduction technologies for mechanical equipment generally suffer from limitations in providing single-directional vibration reduction and failing to meet multi-directional vibration isolation requirements. Field measurements of various rotating, reciprocating, or impact-type equipment have revealed that the horizontal vibrations generated during operation are often on the same order of magnitude as the vertical vibrations, and may even be more pronounced under certain conditions. Finite element analysis shows that strong horizontal vibrations can induce vertical vibrations in the building structure through foundation coupling, thereby affecting floor comfort and even structural safety.

[0006] In traditional vibration reduction design, installing vibration isolators at the bottom of the equipment is a common method. However, these conventional vibration isolators (such as pure rubber pads or coil springs) are usually designed mainly for vertical vibrations and have limited effect on suppressing horizontal vibrations, resulting in poor overall vibration isolation efficiency. Summary of the Invention

[0007] One of the purposes of this application is to provide a three-dimensional vibration isolation composite bearing and its construction method, which aims to solve the problem of poor vibration reduction effect of existing mechanical equipment designs.

[0008] The technical solution of this application is: A three-dimensional vibration isolation composite bearing includes a first support frame, a second support frame, multiple central load-bearing damping springs, and multiple leaf springs; the second support frame is disposed in a concave cavity of the first support frame; the multiple central load-bearing damping springs are respectively arranged in the concave cavity of the first support frame, and their top and bottom ends are respectively connected between the first support frame and the second support frame; the multiple leaf springs are arranged around the second support frame, and each leaf spring is respectively connected between the inner side wall of the first support frame and the outer side wall of the second support frame.

[0009] As one technical solution of this application, the first support frame has a concave structure with an opening at the top.

[0010] As one technical solution of this application, the second support frame has a concave structure with an opening at the bottom.

[0011] As one technical solution of this application, the second support frame is coaxially arranged with the first support frame.

[0012] As one technical solution of this application, the height of the second support frame is higher than the height of the first support frame.

[0013] As one technical solution of this application, the central bearing damping spring includes a steel spring and is arranged in the central area of ​​the first support frame and the second support frame.

[0014] As one technical solution of this application, the central bearing damping spring is connected to the first support frame and the second support frame respectively by bolt connection or welding.

[0015] As one technical solution of this application, both the first support frame and the second support frame are made of steel plate.

[0016] As one technical solution of this application, the leaf spring is made of at least one spring steel and is connected to the first support frame and the second support frame respectively by bolt connection or welding.

[0017] A construction method for a three-dimensional vibration isolation composite bearing includes the following steps: Based on the design drawings and the dimensions of the mechanical equipment base, mark the installation center line and outline of each of the three-way vibration isolation composite supports to be assembled on the foundation surface. Align the first support frame of the three-dimensional vibration isolation composite bearing to be assembled with the installation center line and outline, and fix the first support frame to the foundation through the bolt holes on the first support frame and using pre-embedded anchor bolts or chemical anchors; adjust the level and elevation of the first support frame, and after meeting the requirements, finally tighten the pre-embedded anchor bolts or chemical anchors according to the design torque; The central bearing damping spring is placed in the designed positioning groove or center position in the concave cavity of the first support frame. Multiple leaf springs are connected and fixed to the first support frame according to the design orientation through bolt clamps or welding seats at both ends, and it is ensured that the middle part of the leaf spring can be freely deformed and adjusted. The second support frame is hoisted to the top of the central bearing damping spring, and the second support frame is bolted to the free ends of the multiple leaf springs around it; the level of the second support frame is measured using a level, and the second support frame is adjusted to the design elevation and level by adjusting the central bearing damping spring; at this point, the three-way vibration isolation composite support is assembled. After the mechanical equipment is lifted smoothly and lowered slowly, the connecting bolts on the mechanical equipment are aligned with the bolt holes on the second support frame. All the connecting bolts are then inserted and tightened.

[0018] The beneficial effects of this application are: (1) This three-dimensional vibration isolation composite support is composed of a central bearing damping spring and a leaf spring. The support has a simple and compact structure. While achieving efficient vertical vibration isolation, its structure can also meet the local stress requirements of the corresponding equipment. At the same time, the leaf springs are set around the second support frame. When there is a horizontal load, the leaf springs in the corresponding direction will deform in the corresponding direction as the second support frame moves. The deformation can effectively attenuate the horizontal vibration energy. Furthermore, the central bearing damping spring is connected to the first support frame and the second support frame respectively as a central bearing vibration isolation element. While meeting the vertical bearing capacity, it reduces the vibration generated during the operation of mechanical equipment by adjusting the stiffness, thereby realizing the functions of vertical vibration reduction and support. The overall structure of this support is simple, and it is easy to install and maintain. It significantly improves the safety and vibration resistance of the system and is suitable for various mechanical equipment and other engineering occasions that require vibration control.

[0019] (2) The construction method of this three-way vibration isolation composite bearing is as follows: first, the first support frame is fixed on the foundation; then, the central bearing damping spring is installed in the concave cavity of the first support frame; then, the second support frame is hoisted to the top of the central bearing damping spring and connected to multiple leaf springs around it; finally, the mechanical equipment is installed on the second support frame. This method significantly improves the vibration resistance of the mechanical equipment and has a wide range of applications. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the three-dimensional vibration isolation composite support structure provided in the first embodiment of this application; Figure 2 A schematic diagram of the three-dimensional vibration isolation composite bearing provided in the first embodiment of this application; Figure 3 for Figure 1 Schematic diagram of AA section in the middle; Figure 4 for Figure 2 Schematic diagram of the BB cross section in the middle; Icons: 1-First support frame; 2-Second support frame; 3-Central load-bearing damping spring; 4-Leaf spring. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this application, it should be noted that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are only used to facilitate the description of this application and to simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0026] Furthermore, in this application, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Moreover, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" 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 application based on the specific circumstances.

[0029] First embodiment: Please refer to Figure 1 (Refer to) Figures 2 to 4 This embodiment provides a three-way vibration isolation composite support, which mainly includes a first support frame 1, a second support frame 2, multiple central bearing damping springs 3, and multiple leaf springs 4. The second support frame 2 is disposed in the concave cavity of the first support frame 1. Meanwhile, the multiple central bearing damping springs 3 are respectively arranged in the concave cavity of the first support frame 1, and their top and bottom ends are respectively connected between the first support frame 1 and the second support frame 2. Furthermore, the multiple leaf springs 4 are arranged around the central bearing damping springs 3, and each leaf spring 4 is respectively connected between the inner side wall of the first support frame 1 and the outer side wall of the second support frame 2.

[0030] It should be noted that the first support frame 1 has a concave structure with an opening at the top; simultaneously, the second support frame 2 has a concave structure with an opening at the bottom; furthermore, the second support frame 2 is coaxially arranged with the first support frame 1; the height of the second support frame 2 is greater than the height of the first support frame 1. In addition, both the first support frame 1 and the second support frame 2 are made of steel plates, and are bolted to the reactor and the ground foundation respectively to ensure that the reactor will not slip; and the reactor is mounted on the top surface of the second support frame 2.

[0031] It should be noted that the central load-bearing damping spring 3 can be made of steel and is located in the central area of ​​the first support frame 1 and the second support frame 2. It can be specifically designed according to the type and model of the mechanical equipment to meet the functions of support and vertical vibration damping. At the same time, the central load-bearing damping spring 3 is connected to the first support frame 1 and the second support frame 2 by bolts or welding.

[0032] It should be noted that the leaf spring 4 is composed of multiple stacked spring steels and is connected to the first support frame 1 and the second support frame 2 respectively by bolts or welding. The second support frame 2 is bolted or welded to the leaf spring 4. The two ends of the leaf spring 4 are fixed to the first support frame 1 and the second support frame 2 by bolt clamps or welding seats, allowing free deformation in the middle, thereby meeting the horizontal vibration reduction requirements.

[0033] It should be noted that the triaxial vibration isolation composite bearing used in this embodiment can simultaneously and collaboratively control vibrations in both vertical and two horizontal directions. The overall vibration reduction and noise reduction effect of this bearing is significantly better than that of traditional products. Furthermore, the triaxial vibration isolation composite bearing in this embodiment exhibits excellent engineering adaptability and design flexibility. Its structural form, dimensional parameters, and triaxial stiffness can all be customized according to the weight, center of gravity, and vibration characteristics of different equipment, thereby achieving precise matching and optimization of the vibration isolation system. This bearing can effectively suppress triaxial vibration transmission, significantly reducing the vibration transmission rate between the equipment and the foundation structure. This not only ensures the stable operation of the equipment itself but also improves the comfort of the installation environment and the long-term reliability of the system as a whole. Moreover, this bearing can effectively attenuate the triaxial vibration of mechanical equipment, reducing structural noise caused by vibration transmission at the source, thereby ensuring the stable operation of the equipment itself and improving the quality of the surrounding environment.

[0034] It should be noted that this three-dimensional vibration isolation composite bearing was applied to a certain mechanical equipment with a mass of 18,000 kg and an excitation frequency of 100 Hz.

[0035] Assume the effective arc length of a single leaf spring 4 is L=110mm, width b=160mm, and thickness t=25mm. The elastic modulus of the steel is... ; Single leaf spring 4 stiffness ; When this three-dimensional vibration isolation composite bearing is in operation, two leaf springs are connected in parallel in the same horizontal direction, thus the system stiffness is... ; Natural frequency ; The damping ratio is set to 0.05; Transmission rate ; Horizontal vibration isolation effect ; Assume the stiffness of a single spring ; When this three-dimensional vibration isolation composite bearing is in operation, the four springs in the vertical direction are connected in parallel, therefore the system stiffness is... ; Natural frequency ; The damping ratio is set to 0.05; Transmission rate ; Vertical vibration isolation effect .

[0036] The above theoretical calculations show that the vibration isolation rate of the three-dimensional vibration isolation composite support for the reactor can reach 87.2%, which has a significant vibration isolation effect and meets the vibration isolation requirements.

[0037] In summary, this three-dimensional vibration isolation composite support is composed of a central load-bearing damping spring 3 and leaf springs 4. The support has a simple and compact structure, achieving efficient vertical vibration isolation while also meeting the local stress requirements of the corresponding equipment. Simultaneously, the leaf springs 4 are positioned around the second support frame 2. When a horizontal load exists, the leaf springs 4 in the corresponding direction deform as the second support frame 2 moves, effectively attenuating horizontal vibration energy. Furthermore, the central load-bearing damping spring 3, acting as a central load-bearing vibration isolation element, is connected to both the first support frame 1 and the second support frame 2. While meeting the vertical load-bearing capacity, it reduces vibrations generated during the operation of mechanical equipment by adjusting stiffness, thus achieving both vertical vibration reduction and support functions. This support has a simple overall structure, is easy to install and maintain, significantly improves the system's safety and vibration resistance, and is suitable for various types of mechanical equipment and other engineering applications requiring vibration control.

[0038] Second embodiment: This embodiment provides a construction method for a three-dimensional vibration isolation composite bearing, which mainly includes the following steps: According to the design drawings and the dimensions of the mechanical equipment base, mark the installation center line and outline of each triaxial vibration isolation composite bearing to be assembled on the foundation surface; check the foundation surface to ensure that it is flat, firm and free of oil stains, so as to provide a stable base surface for the installation of the triaxial vibration isolation composite bearing. Align the first support frame 1 of the three-dimensional vibration isolation composite bearing to be assembled with the installation center line and outline, and fix the first support frame 1 to the foundation through the bolt holes on the first support frame 1 and use the pre-embedded anchor bolts or chemical anchors; adjust the level and elevation of the first support frame 1, and after meeting the requirements, finally tighten the pre-embedded anchor bolts or chemical anchors according to the design torque. The central bearing damping spring 3 is placed in the design positioning groove or center position in the concave cavity of the first support frame 1. Multiple leaf springs 4 are connected and fixed to the first support frame 1 by bolt clamps or welding seats at both ends and according to the design orientation, and it is ensured that the middle part of the leaf spring 4 can be freely deformed and adjusted. The second support frame 2 is hoisted to the top of the central bearing damping spring 3, and the second support frame 2 is bolted to the free ends of the multiple leaf springs 4 around it; the level of the second support frame 2 is measured with a level, and the second support frame 2 is adjusted to the design elevation and level by adjusting the central bearing damping spring 3; the three-way vibration isolation composite support assembly is now complete. After the mechanical equipment is lifted smoothly and lowered slowly, the connecting bolts on the mechanical equipment are aligned with the bolt holes on the second support frame 2. All connecting bolts are inserted and tightened to ensure that the mechanical equipment (which can be a reactor) is firmly connected to the three-way vibration isolation composite support and will not slip. Inspect all bolt connections to ensure they are tightened to the required torque as per design specifications; confirm that leaf spring 4 is free from twisting and additional constraints, and confirm that the center-loaded damping spring 3 is under normal compression.

[0039] In summary, the construction method of this three-way vibration isolation composite bearing involves first fixing the first support frame 1 to the foundation, then installing the central bearing damping spring 3 into the concave cavity of the first support frame 1, then hoisting the second support frame 2 onto the top of the central bearing damping spring 3 and connecting it to multiple leaf springs 4 around it, and finally installing the mechanical equipment on the second support frame 2. This method significantly improves the vibration resistance of the mechanical equipment and has a wide range of applications.

[0040] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A three-dimensional vibration isolation composite bearing, characterized in that, The system includes a first support frame, a second support frame, multiple central load-bearing damping springs, and multiple leaf springs. The second support frame is disposed in a concave cavity of the first support frame. The multiple central load-bearing damping springs are respectively arranged in the concave cavity of the first support frame, and their top and bottom ends are respectively connected between the first support frame and the second support frame. The multiple leaf springs are arranged around the second support frame, and each leaf spring is respectively connected between the inner side wall of the first support frame and the outer side wall of the second support frame.

2. The three-dimensional vibration isolation composite bearing according to claim 1, characterized in that, The first support frame has a concave structure with an opening at the top.

3. The three-dimensional vibration isolation composite bearing according to claim 1, characterized in that, The second support frame has a concave structure with an opening at the bottom.

4. The three-dimensional vibration isolation composite bearing according to claim 1, characterized in that, The second support frame is coaxially arranged with the first support frame.

5. The three-dimensional vibration isolation composite bearing according to claim 1, characterized in that, The height of the second support frame is higher than the height of the first support frame.

6. The three-dimensional vibration isolation composite bearing according to claim 1, characterized in that, The central bearing damping spring includes a steel spring and is arranged in the central area of ​​the first support frame and the second support frame.

7. The three-dimensional vibration isolation composite support method according to claim 1, characterized in that, The central load-bearing damping spring is connected to the first support frame and the second support frame respectively by bolts or welding.

8. The three-dimensional vibration isolation composite bearing according to claim 1, characterized in that, Both the first support frame and the second support frame are made of steel plates.

9. The three-dimensional vibration isolation composite bearing according to claim 1, characterized in that, The leaf spring is made of at least one spring steel and is connected to the first support frame and the second support frame respectively by bolting or welding.

10. A construction method for a three-dimensional vibration isolation composite bearing, characterized in that, Includes the following steps: Based on the design drawings and the dimensions of the mechanical equipment base, mark the installation center line and outline of each of the three-way vibration isolation composite supports to be assembled on the foundation surface. Align the first support frame of the three-dimensional vibration isolation composite bearing to be assembled with the installation center line and outline, and fix the first support frame to the foundation through the bolt holes on the first support frame and using pre-embedded anchor bolts or chemical anchors; adjust the level and elevation of the first support frame, and after meeting the requirements, finally tighten the pre-embedded anchor bolts or chemical anchors according to the design torque; The central bearing damping spring is placed in the designed positioning groove or center position in the concave cavity of the first support frame. Multiple leaf springs are connected and fixed to the first support frame according to the design orientation through bolt clamps or welding seats at both ends, and it is ensured that the middle part of the leaf spring can be freely deformed and adjusted. The second support frame is hoisted to the top of the central bearing damping spring, and the second support frame is bolted to the free ends of the multiple leaf springs around it; the level of the second support frame is measured using a level, and the second support frame is adjusted to the design elevation and level by adjusting the central bearing damping spring; at this point, the three-way vibration isolation composite support is assembled. After the mechanical equipment is lifted smoothly and lowered slowly, the connecting bolts on the mechanical equipment are aligned with the bolt holes on the second support frame. All the connecting bolts are then inserted and tightened.

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