A composite vibration damping disc and a support module capable of vibration reduction and force measurement

Abstract

The present invention relates to the field of support vibration reduction technology, and aims to solve the problem that existing vibration reduction measures cannot effectively isolate the low-frequency vibration of the beam body, posing a great threat to the human body and precision equipment, and provides a composite vibration reduction disk and a support module capable of vibration reduction and force measurement; wherein, the composite vibration reduction disk includes an elastomer, a concave spherical panel is provided on the top of the elastomer, a concave spherical stiffening plate is provided inside the elastomer, a cavity is opened on the elastomer, the concave spherical panel seals the top of the elastomer, the concave spherical stiffening plate is hollow annular, the concave spherical panel, the elastomer, and the concave spherical stiffening plate are connected to form a whole; the support module capable of vibration reduction and force measurement includes a composite vibration reduction disk and a lower support plate, a pelvic cavity is provided on the lower support plate, the composite vibration reduction disk is placed in the pelvic cavity, the outer diameter of the composite vibration reduction disk is adapted to the inner diameter of the pelvic cavity, a force measuring component mounting hole is opened on the annular direction of the pelvic cavity, the force measuring component mounting hole is used to install the force measuring component, and one end of the force measuring component is in contact with the outer side of the composite vibration reduction disk.

Description

Technical Field

[0001] The present invention relates to the technical field of support vibration reduction, and in particular to a composite vibration reduction disk and a support module capable of vibration reduction and force measurement. Background Art

[0002] The noise and vibration of rail transit have a great impact on surrounding residents and precision instruments. At present, noise problems are mostly solved by measures such as sound barriers, and vibration problems are solved by measures such as low-vibration rails and floating roadbed slabs. However, the low-frequency vibration of the beam is not well isolated, and low-frequency vibration poses a greater threat to the human body and precision equipment. Therefore, it is necessary to develop a vibration-damping bearing that can reduce the transmission of beam vibration to the bridge pier.

[0003] In the existing technology, some add a layer of vibration-damping alloy as a vibration-damping structure in the spherical bearing, some add a layer of rubber as a vibration-damping layer in the spherical bearing, some add disc springs or use steel disc structures for vibration reduction, and some use plate rubber bearing structures for vibration reduction.

[0004] However, the above technologies still need to be improved in terms of stiffness matching, compression displacement, vibration energy absorption capacity, etc., and none of the above technologies take intelligent functions into consideration. Summary of the Invention

[0005] The present invention aims to provide a composite vibration damping disk and a support module capable of vibration reduction and force measurement, so as to solve the problem that existing vibration reduction measures fail to effectively isolate the low-frequency vibration of the beam body, posing a great threat to the human body and precision equipment.

[0006] The present invention is achieved by adopting the following technical solutions:

[0007] The present invention provides a composite vibration damping disk, comprising an elastomer, wherein a concave spherical panel is provided on the top of the elastomer, at least one layer of concave spherical stiffening plate is provided inside the elastomer, a cavity is opened on the elastomer, the concave spherical panel seals the top of the elastomer, the concave spherical stiffening plate is in a hollow ring shape, and the concave spherical panel, the elastomer, and the concave spherical stiffening plate are connected to form a whole.

[0008] As the preferred technical solution:

[0009] A central vibration-damping column is installed in the cavity.

[0010] As the preferred technical solution:

[0011] The cavity is a cylindrical cavity, the central vibration-damping column is a cylinder, and the outer diameter of the central vibration-damping column is adapted to the inner diameter of the cavity.

[0012] As the preferred technical solution:

[0013] The cavity is vertically opened on the elastic body, and the central vibration-damping column is vertically arranged.

[0014] As the preferred technical solution:

[0015] Multiple layers of concave spherical stiffening plates are provided inside the elastic body, and the concave spherical stiffening plates of each layer are arranged at intervals, and a laminated structure is formed between the concave spherical stiffening plates and the elastic body.

[0016] As the preferred technical solution:

[0017] The central vibration-damping column is a hollow cylindrical structure.

[0018] As the preferred technical solution:

[0019] A groove for mounting a spherical slide plate is provided in the concave surface of the concave spherical panel.

[0020] The present invention further provides a support module that can reduce vibration and measure force, including the composite vibration damping disk and a lower support plate, the lower support plate is provided with a pelvic cavity, the composite vibration damping disk is placed in the pelvic cavity, the outer diameter of the composite vibration damping disk is adapted to the inner diameter of the pelvic cavity, a force measuring component mounting hole is opened on the annular direction of the pelvic cavity, the force measuring component mounting hole is used to install the force measuring component, and one end of the force measuring component is in contact with the outer side of the composite vibration damping disk.

[0021] As the preferred technical solution:

[0022] A spherical slide plate, a vibration-damping spherical crown lining plate, and a plane slide plate are sequentially installed above the concave spherical panel of the composite vibration damping disc. The spherical slide plate is installed in a groove in the concave surface of the concave spherical panel.

[0023] As the preferred technical solution:

[0024] The vibration-damping spherical crown lining is made of aluminum alloy.

[0025] As the preferred technical solution:

[0026] A sealing ring is installed on the outer edge of the concave spherical panel of the composite vibration damping disk, and an inner stopper of the sealing ring is provided on the inner side of the sealing ring. The outer diameter of the connection between the elastomer of the composite vibration damping disk and the concave spherical panel is smaller than the outer diameter of its lower part. The inner stopper of the sealing ring fits with the concave spherical panel, and the fixing clamp is attached to the periphery of the concave spherical panel; a sealing groove is provided on the outer side of the sealing ring.

[0027] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0028] 1. The composite vibration damping disk of the present invention has a specially designed stacked structure of elastomer and arc-shaped steel plate, combined with a cavity in the middle of the elastomer and a central vibration damping column in the cavity. It is significantly different from the rubber plate bearing or rubber pad and metal pad structure used in the prior art. It can achieve vertical vibration reduction and energy consumption in the spherical steel bearing, has a larger stiffness adjustment range and vertical compression space, and has a better vibration reduction effect.

[0029] 2. The composite vibration damping disc of the present invention has a larger stiffness adjustment range and vertical compression capacity, which can reduce the number of specifications of composite vibration damping discs with different stiffnesses, thereby helping to reduce costs.

[0030] 3. The bearing module of the present invention not only has excellent vibration reduction effects but also features intelligent force measurement. A force-measuring assembly can be installed in a hole in the side of the lower bearing plate, with one end of the assembly contacting the outer side of the composite vibration damping plate to monitor the stress on the bridge bearing. The force-measuring assembly preferably uses the quickly replaceable force-measuring assembly described in Patent No. ZL202220829775.X. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic structural diagram of the composite vibration damping disk described in the present invention.

[0032] Figure 2 This is a schematic structural diagram of the support module capable of vibration reduction and force measurement according to the present invention.

[0033] Figure 3 This is a cross-sectional view of the support module capable of vibration reduction and force measurement according to the present invention.

[0034] Figure 4 for Figure 3 A partial schematic diagram of .

[0035] Figure 5 This is a schematic diagram of the installation of the sealing ring described in the present invention.

[0036] Icons: 1 composite vibration damping disc, 1-1 concave spherical panel, 1-2 concave spherical stiffening plate, 1-3 elastomer, 1-4 cavity, 2 central vibration damping column, 3 spherical slide plate, 4 vibration damping ball crown lining plate, 5 flat slide plate, 6 lower support plate, 6-1 force measuring component mounting hole, 7 sealing ring, 7-1 inner stop of sealing ring, 7-2 sealing groove. DETAILED DESCRIPTION

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0038] Example 1

[0039] like Figure 1 As shown, this embodiment provides a composite vibration damping disk, and the composite vibration damping disk 1 is used to be placed in a disc-shaped basin cavity similar to the bottom basin of a pot-type support.

[0040] The composite vibration damping disk 1 comprises an elastic body 1-3, a concave spherical panel 1-1 is provided on the top of the elastic body 1-3, and a groove for mounting a spherical slide 3 is machined in the concave surface of the concave spherical panel 1-1.

[0041] Multiple layers of concave spherical stiffening plates 1-2 are provided inside the elastic body 1-3, and a certain distance is provided between each layer of the concave spherical stiffening plates 1-2.

[0042] In this embodiment, three layers of concave spherical stiffening plates 1-2 are provided within the elastomer 1-3. These concave spherical stiffening plates 1-2 are constructed of concave spherical stiffening steel plates. The elastomer 1-3 is constructed of rubber, which is vulcanized to the concave spherical stiffening steel plates and the concave spherical face plate 1-1, forming a single integrated structure. Rubber is interposed between adjacent layers of the concave spherical stiffening steel plates, forming a laminated structure with the rubber.

[0043] The composite vibration damping disk 1 has a cylindrical shape. Since the concave spherical panel 1 - 1 is provided on the top thereof, the top surface of the composite vibration damping disk 1 is in the shape of a spherical groove.

[0044] The composite vibration damping disc 1 is provided with a cylindrical cavity 1-4, which is opened in the center of the elastic body 1-3. That is, the elastic body 1-3 is hollow, and the concave spherical panel 1-1 seals the top of the elastic body 1-3. The outer diameter of the connection between the elastic body 1-3 and the concave spherical panel 1-1 is slightly smaller than the diameter of the lower portion of the elastic body 1-3.

[0045] The concave spherical stiffener 1-2 is hollow and annular and is embedded within the elastic body 1-3. Therefore, the outer side and bottom of the composite vibration damping disc 1, as well as the surrounding area of the cavity 1-4, are all made of rubber. The cavity 1-4 is a convex space for the rubber to deform, allowing the vertical stiffness of the rubber to be adjusted.

[0046] There is no concave spherical reinforcing steel plate inside the rubber on the outside of the composite vibration damping disc 1, which is used to be in close contact with the side of the bottom basin of the pot-type support to transmit pressure.

[0047] Since the rubber is provided with a concave spherical stiffening steel plate, the vertical stiffness is enhanced. If a simple rubber structure is fully sealed and the volume cannot be changed, the stiffness will exceed the vibration reduction requirement. When the rubber is completely unconstrained on all sides, the vertical stiffness is too low to meet the support requirements. The structure of the rubber with a concave spherical stiffening steel plate inside and outside constrained by the present invention can achieve an overall bearing pressure of 30MPa, which is much higher than the 10MPa of the general rubber plate bearing, which is beneficial to reducing the volume control cost of the bearing.

[0048] Furthermore, a force measuring assembly is provided on the outside of the composite vibration damping disc 1, and the force measuring assembly can be installed in a side opening of the bottom basin of the pot-type support, so that one end of the force measuring assembly contacts the outside of the composite vibration damping disc 1. The force measuring assembly is used to monitor the stress condition of the bridge support. The force measuring assembly can be replaced in situ when subjected to vertical loads without changing the stress state of the bridge. It does not require lifting the beam body, which is simple and convenient to replace, and does not affect the force measurement accuracy after replacement. The force measuring assembly can adopt the Chinese utility model patent: patent number ZL202220829775.X, named "Serial No. 5 Force Measuring Assembly" in "A Smart Support Force Measuring Assembly", which can realize the function of real-time detection of the support stress condition.

[0049] Furthermore, a central vibration damping column 2 can be disposed within the cavities 1-4. The central vibration damping column 2 is preferably cylindrical, with an outer diameter matching the inner diameter of the cavities 1-4. The central vibration damping column 2 is disposed vertically. The central vibration damping column 2 can be configured as a hollow structure (a hollow cylinder). The central vibration damping column 2 can adjust the size of the inward bulge of the rubber and, through its own compression, adjust the overall vertical stiffness of the support. This allows the stiffness of the support to be adjusted while maintaining the composite vibration damping disc 1, better meeting the adaptability needs of different projects. It also provides vibration reduction and energy dissipation in vibrating environments.

[0050] The inner diameter of the cavities 1-4 is determined by the overall vertical stiffness matching design. The larger the internal hollow diameter of the central vibration damping column 2, the weaker the vertical stiffness of the entire support and the greater the internal stress of the composite vibration damping disc 1. Both its size and hardness require matching based on material elasticity and simulation analysis. The central vibration damping column 2 is preferably made of polyurethane, which has excellent damping properties and a wide hardness adjustment range, and can be easily cast and molded. Alternatively, it can be made of other elastic materials with a wide hardness adjustment range, such as silicone rubber. When the stiffness of the composite vibration damping disc 1 is relatively low, a central vibration damping column 2 of a specific hardness and inner diameter can be placed in the cavities 1-4 to adjust the overall vertical stiffness of the support and increase vibration damping.

[0051] The composite vibration damping plate 1 of the present invention is assembled in the support and has the most suitable stiffness and compressibility for different bridges. It can effectively isolate and absorb the energy of the main vibration frequency in the beam body, and the expected vibration reduction is not less than 5dB.

[0052] The manufacturing method of the composite vibration damping disc 1 of the present invention is as follows:

[0053] 1. Through finite element simulation analysis, the specific thickness of the rubber layer, the thickness of the concave spherical stiffener 1-2, and the size of the cavity 1-4 are determined to improve the vertical stiffness accuracy of the composite vibration damping disc 1 after molding.

[0054] 2. Processing the concave spherical panel 1-1 and the concave spherical stiffening plate 1-2, and processing a groove for installing the spherical slide plate 3 in the concave surface of the concave spherical panel 1-1.

[0055] 3. Place the processed concave spherical panel 1-1, the rubber material of the elastomer 1-3, and the concave spherical stiffening plate 1-2 in the rubber vulcanization mold in sequence. The thickness of the rubber layer, the thickness of the concave spherical stiffening plate 1-2, and the size of the middle cavity 1-4 are calculated according to the designed vertical stiffness. After vulcanization, the composite vibration damping disc 1 is formed.

[0056] The cavity 1-4 formed on the composite vibration damping disk 1 is preferably cylindrical, but can also be polygonal or other shapes. The elastomer 1-3 is preferably high-damping rubber, but natural rubber, chloroprene rubber, EPDM rubber, silicone rubber, and other materials can also be selected. The outer diameter of the elastomer 1-3 at the connection with the concave spherical panel 1-1 is slightly smaller than the outer diameter of the lower elastomer 1-3. The diameter difference gap is the same as the wall thickness of the sealing ring 7 and is used for the subsequent installation of the sealing ring 7. To save costs, the spherical radius of each concave spherical stiffening plate 1-2 is equal, that is, it is an equal radius structure rather than a concentric structure. The number of concave spherical stiffening plates 1-2 is no less than one layer, which is specifically determined based on the vertical stiffness calculation of the vibration damping. In this embodiment, three layers of concave spherical stiffening plates 1-2 are provided. The spherical radius of the concave spherical stiffening plate 1-2 is equal to the bottom radius of the concave spherical panel 1-1, or the concave spherical stiffening plate 1-2 is concentric with the concave spherical panel 1-1.

[0057] Example 2

[0058] like Figure 2-Figure 4 As shown, this embodiment provides a support module capable of vibration reduction and force measurement, including the composite vibration reduction disk 1 and the lower support plate 6 described in Example 1, wherein a cylindrical pelvic cavity is machined in the lower support plate 6, and the composite vibration reduction disk 1 is placed in the pelvic cavity, and the outer diameter of the composite vibration reduction disk 1 is equal to the inner diameter of the pelvic cavity.

[0059] The spherical slide plate 3, the vibration-damping spherical crown lining plate 4, and the flat slide plate 5 are sequentially placed on the top of the composite vibration damping disc 1. The upper support plate is matched according to the requirements of different supports, which is not shown in the figure.

[0060] The spherical slide plate 3 is installed in a groove in the concave surface of the concave spherical panel 1 - 1 .

[0061] The vibration-damping spherical cap liner 4 is preferably made of aluminum alloy, with a hard anodized and polished surface. Due to the internal damping properties of aluminum alloy, it can absorb mid- and high-frequency vibrations, further improving the vibration and energy absorption performance of the entire bearing across the entire frequency range. Specifically, a high-damping aluminum alloy can be used. The vibration-damping spherical cap liner 4 can also be made of nylon, specifically high-strength nylon, oil-repellent nylon, or other materials with high internal damping, such as MC901, PA66, or oil-repellent PA6, to further improve the bearing's vibration reduction and isolation performance.

[0062] The edge of the concave spherical panel 1-1 is provided with a sealing ring 7, which is a disconnectable sealing ring and has an inclined joint. The sealing ring 7 is usually made of copper alloy or hard plastic such as nylon.

[0063] The central vibration damping column 2 is assembled in the composite vibration damping disc 1 , the sealing ring 7 is installed on the outer side of the composite vibration damping disc 1 , and then the composite vibration damping disc 1 is installed in the basin cavity of the lower support plate 6 .

[0064] like Figure 5 As shown, an inner sealing ring stop 7-1 is provided on the inner side of the sealing ring 7. Since the outer diameter of the connection between the elastomer 1-3 of the composite vibration damping disk 1 and the concave spherical panel 1-1 is slightly smaller than the outer diameter of its lower part, the inner sealing ring stop 7-1 fits the concave spherical panel 1-1 after the sealing ring 7 is installed, and the fixing clamp is arranged around the concave spherical panel 1-1 to prevent the sealing ring 7 from slipping out when the support is compressed up and down.

[0065] The outer side of the sealing ring 7 is slidably fitted with the inner wall of the pelvic cavity. A sealing groove 7-2 is provided on the outer side of the sealing ring 7. The sealing groove 7-2 can make the sealing ring 7 and the inner wall of the pelvic cavity fit more closely, thereby achieving better dustproof and waterproof effects.

[0066] Furthermore, if there is a need for force measurement, force measuring component mounting holes 6-1 are processed around the circumference of the pelvic cavity for installing the force measuring component. One end of the force measuring component is in contact with the outer side of the composite vibration damping disk 1. The force measuring component can adopt the Chinese utility model patent: patent number ZL202220829775.X, named "Serial No. 5 Force Measuring Component" in "A Smart Support Force Measuring Component", which can realize the function of real-time detection of the support force condition.

[0067] When the support slides horizontally, the horizontal friction force is transmitted through the concave spherical panel 1-1, part of the horizontal force is transmitted to the inner wall of the lower support plate 6 through the sealing ring 7, and part of the horizontal force is transmitted to the inner wall of the lower support plate 6 through the elastomer 1-3. After testing, this horizontal force transmission will cause the force reading of the force measuring component on the compressed side to slightly increase, while the force reading of the force measuring component on the other side will slightly decrease, but the total force reading of multiple force measuring components remains almost unchanged, so it will not have a significant impact on the force measuring performance of the support.

[0068] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A composite vibration damping disc, characterized in that: The invention comprises an elastic body, a concave spherical panel is provided on the top of the elastic body, at least one concave spherical stiffening plate is provided inside the elastic body, a cavity is opened on the elastic body, the concave spherical panel seals the top of the elastic body, the concave spherical stiffening plate is in a hollow ring shape, and the concave spherical panel, the elastic body, and the concave spherical stiffening plate are connected to form a whole; A central vibration-damping column is installed in the cavity; The cavity is a cylindrical cavity, the central vibration-damping column is a cylinder, and the outer diameter of the central vibration-damping column is adapted to the inner diameter of the cavity; The cavity is vertically opened on the elastic body, and the central vibration-damping column is vertically arranged; The interior of the elastic body is provided with multiple layers of the concave spherical stiffening plates, each layer of the concave spherical stiffening plates is arranged at intervals, and a laminated structure is formed between the concave spherical stiffening plates and the elastic body; The central vibration damping column is a hollow cylindrical structure; A groove for mounting a spherical slide plate is provided in the concave surface of the concave spherical panel.

2. A support module capable of vibration reduction and force measurement, characterized in that: It comprises the composite vibration damping disk as claimed in claim 1 and a lower support plate, wherein the lower support plate is provided with a pelvic cavity, the composite vibration damping disk is placed in the pelvic cavity, the outer diameter of the composite vibration damping disk is adapted to the inner diameter of the pelvic cavity, a force measuring component mounting hole is opened in the annular direction of the pelvic cavity, the force measuring component mounting hole is used to install a force measuring component, and one end of the force measuring component is in contact with the outer side of the composite vibration damping disk.

3. The support module capable of vibration reduction and force measurement according to claim 2, characterized in that: A spherical slide plate, a vibration-damping spherical crown lining plate, and a plane slide plate are sequentially installed above the concave spherical panel of the composite vibration damping disc. The spherical slide plate is installed in a groove in the concave surface of the concave spherical panel.

4. The support module capable of vibration reduction and force measurement according to claim 2, characterized in that: A sealing ring is installed on the outer edge of the concave spherical panel of the composite vibration damping disk, and an inner stopper of the sealing ring is provided on the inner side of the sealing ring. The outer diameter of the connection between the elastomer of the composite vibration damping disk and the concave spherical panel is smaller than the outer diameter of its lower part. The inner stopper of the sealing ring fits with the concave spherical panel, and the fixing clamp is attached to the periphery of the concave spherical panel; a sealing groove is provided on the outer side of the sealing ring.

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