A vibration isolation damper and a power equipment vibration isolation damping system

Abstract

The present application relates to the field of shock absorption and vibration isolation, and particularly relates to a vibration isolation and shock absorber and a power equipment vibration isolation and shock absorption system. The vibration isolation and shock absorber comprises a positioning rod arranged along a vertical direction, at least two groups of elastic vibration isolation parts capable of producing elastic expansion and contraction along the vertical direction are arranged on the positioning rod, and a device positioning plate for fixing a device is arranged between the two elastic vibration isolation parts so as to be able to float up and down. A vertical energy dissipation part is coaxially arranged on the positioning rod and is staggered with the elastic vibration isolation part along the vertical direction. The vertical energy dissipation part is in static friction cooperation with the positioning rod, and the movement track of the device positioning plate along the vertical direction intersects with the vertical energy dissipation part. The elastic vibration isolation part and the vertical energy dissipation part of the present application work in stages, which can effectively reduce the response of the power equipment and the vibration isolation and shock absorber, and has a protection effect on the power equipment and the vibration isolation and shock absorber, and further greatly reduces the use and maintenance cost of the power equipment and the vibration isolation and shock absorber.

Description

Technical Field

[0001] This invention relates to the field of vibration reduction and isolation, specifically to a vibration isolation and damping device and a vibration isolation and damping system for power equipment. Background Technology

[0002] Vibrations generated by the operation of power equipment can adversely affect the equipment and its main structure, severely disrupting people's normal lives and work, and causing significant economic losses. Therefore, vibration isolation measures must be implemented for power equipment. Equipment vibration control involves controlling the vibration level of the equipment body through vibration absorption, isolation, or external active energy input to prevent strong vibrations during operation that could lead to equipment damage. In practical engineering, vibration control can be achieved by installing vibration isolators at the bottom of the equipment to alter its dynamic characteristics.

[0003] Traditional vibration isolation technologies often only consider vibration isolation during normal equipment operation, simply using spring-based vibration isolators to meet the isolation requirements under normal conditions. However, they fail to consider the increased vibration during earthquakes, which necessitates energy-dissipating damping. This often leads to equipment jumping and overturning during earthquakes, causing isolators to fail. While vibration isolators and dampers can be combined, this combination results in both operating simultaneously. During long-term normal use, the simultaneous operation of dampers and isolators puts constant stress on the dampers, potentially causing fatigue and damage. Replacing damaged dampers during normal equipment use requires not only purchasing new isolators but also shutting down the equipment, resulting in significant economic losses. Therefore, the current technology of simultaneous operation of dampers and isolators leads to high operating and maintenance costs for power equipment and its vibration isolation system, potentially impacting the normal operation of cities and society. This problem urgently needs to be addressed. Summary of the Invention

[0004] To avoid and overcome the technical problems existing in the prior art, the present invention provides a vibration isolation and damping device. The present invention enables the elastic vibration isolation part and the vertical energy dissipation part of the vibration isolation and damping device to work in stages, which has a staged working mechanism of the elastic vibration isolation part and the vertical energy dissipation part. This can effectively reduce the response of the equipment and the vibration isolation and damping device, provide protection for them, and thus significantly reduce the use and maintenance costs of the vibration isolation and damping device.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A vibration isolator includes a positioning rod arranged in a vertical direction, at least two sets of elastic vibration isolating parts capable of elastic extension and contraction in the vertical direction arranged on the positioning rod, and an equipment positioning plate for fixing equipment is arranged between the two elastic vibration isolating parts so as to be able to float up and down; a vertical energy dissipating part is coaxially arranged on the positioning rod and offset from the position of the elastic vibration isolating parts in the vertical direction, the vertical energy dissipating part is in static frictional engagement with the positioning rod, and the movement trajectory of the equipment positioning plate in the vertical direction intersects with the vertical energy dissipating part.

[0006] As a further aspect of the present invention: the vertical energy-consuming part includes a sleeve coaxially sleeved outside the positioning rod, and at least two sets of clamps located on the two surfaces of the equipment positioning plate respectively lock and fix the sleeve, and the movement trajectory of the equipment positioning plate in the vertical direction intersects with the two clamps.

[0007] As a further embodiment of the present invention: the sleeve includes an inner sleeve and an outer sleeve that are sequentially sleeved and fitted with the positioning rod from the inside to the outside. The outer sleeve and the inner sleeve are in sliding fit, and the inner sleeve and the positioning rod are in static friction fit. A clamp is arranged outside the outer sleeve to press the outer sleeve tightly onto the inner sleeve.

[0008] As a further embodiment of the present invention: the outer ring of the outer sleeve has a first groove that engages with the clamp, the inner ring of the outer sleeve has a second groove, and the friction plate is arranged in the second groove to abut against the inner sleeve; the outer sleeve includes two sets of half sleeves, which can be closed to form a sleeve-type structure.

[0009] As a further embodiment of the present invention: an upper pad and a lower pad are coaxially fixed on the positioning rod, and two elastic vibration isolation parts are located between the upper pad and the equipment positioning plate and between the lower pad and the equipment positioning plate, respectively.

[0010] As a further embodiment of the present invention: friction plates are coaxially arranged on the positioning rod at the two surfaces of the equipment positioning plate respectively. The friction plates are sleeved with the sleeve of the vertical energy dissipation part, and the elastic vibration isolation part abuts against the corresponding friction plate so that the friction plate is pressed and fixed to the equipment positioning plate. In the initial state, there is a gap between the friction plate and the corresponding clamp.

[0011] As a further aspect of the present invention: the equipment positioning plate is provided with a sliding hole for the sleeve of the vertical energy-consuming part to pass through, and the diameter of the sliding hole is larger than the outer diameter of the sleeve, so that a relative horizontal displacement can be generated between the equipment positioning plate and the friction plate.

[0012] As a further embodiment of the present invention: the elastic vibration isolation part is a disc spring arranged coaxially with the positioning rod, and the vertical energy dissipation part is arranged in the inner cavity of the disc spring and avoids the position of the disc spring.

[0013] As a further aspect of the present invention: the theoretical transmission coefficient TR of the vibration isolation damper is:

[0014]

[0015]

[0016] in, ξ The damping ratio of the entire vibration isolation and damping system; λ The overall frequency ratio of the vibration isolation and damping system; f n This is the natural frequency of the entire vibration isolation and damping system; ω n This refers to the natural angular frequency of the entire vibration isolation and damping system. m For the quality of power equipment; k This refers to the stiffness of the elastic vibration isolation section.

[0017] A vibration isolation and damping system for power equipment includes at least four sets of vibration isolation and damping devices. The power equipment is fixed on an installation platform, and the four corners of the installation platform are connected and fixed to the equipment positioning plates on each vibration isolation and damping device.

[0018] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention uses a positioning plate for fixing equipment, arranged between two sets of elastic vibration isolation sections. The positioning plate is positioned by the elastic vibration isolation sections. When the equipment vibrates vertically, the power equipment and the positioning plate move synchronously, and the elastic vibration isolation sections work, using elastic force to isolate the power equipment. When a large external disturbance such as an earthquake occurs, the power equipment vibrates significantly. After exceeding the normal vibration amplitude of the elastic vibration isolation sections, the positioning plate will come into contact with the vertical energy dissipation section during its vertical movement. The friction between the vertical energy dissipation section and the positioning rod achieves a vertical frictional energy dissipation effect. During normal operation, only the elastic vibration isolation section is in working condition. The vertical energy dissipation section, due to the large distance between it and the positioning plate, will not be in working condition. The elastic vibration isolation section and the vertical energy dissipation section can work in stages. During normal use, the elastic vibration isolation section works without affecting the vertical energy dissipation section. When a large external disturbance such as an earthquake occurs, the vertical energy dissipation section works, effectively reducing the response of the power equipment and the vibration damper, thus protecting them. This staged working mechanism can significantly reduce the use and maintenance costs of the power equipment and the vibration damper.

[0019] 2. The vertical energy dissipation part of this invention is designed as a sleeve structure. It is locked by a clamp. After entering the working state, the equipment positioning plate impacts the clamp from top to bottom, and the vertical energy dissipation of the power equipment is achieved through the friction between the inner sleeve and the outer sleeve. The split design of the outer sleeve facilitates its disassembly and replacement. It can be assembled after applying pre-tightening, which is suitable for rapid repair and replacement after an earthquake. The slots on the inner and outer sides of the outer sleeve facilitate the quick positioning and installation of the clamp and friction plate.

[0020] 3. The present invention has friction plates arranged at both ends of the equipment positioning plate to form a horizontal energy dissipation part. The friction plates are pressed tightly against the surface of the equipment positioning plate by the elastic vibration isolation part. When a large external disturbance such as an earthquake occurs, the equipment positioning plate can be horizontally displaced relative to the friction plates through the sliding holes, thereby achieving a horizontal friction energy dissipation effect. The overall force transmission is clear and easy to replace.

[0021] 4. The elastic vibration isolation part of the present invention is designed as a disc spring. When the elastic vibration isolation part is damaged, the disc spring can be replaced to quickly replace the elastic vibration isolation part. Since the vertical energy dissipation part is arranged in the inner cavity of the disc spring, it always avoids the disc spring. The two work in stages, which greatly reduces the use and maintenance cost of the vibration isolation damper. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the vibration isolation and damping system for power equipment of the present invention.

[0023] Figure 2 This is a schematic diagram of the vibration isolation and damping device of the present invention.

[0024] Figure 3 This is a schematic diagram of the structure of the vibration isolation and damping device of the present invention after the elastic vibration isolation part is removed.

[0025] Figure 4 This is a schematic diagram of the positioning plate in this invention.

[0026] Figure 5 This is a schematic diagram of the vertical energy-consuming part in this invention.

[0027] Figure 6 This is an exploded view of the vertical energy-consuming section in this invention.

[0028] Figure 7 This is a simulation diagram showing the application of a ±20mm vertical displacement to the vertical energy-consuming part.

[0029] Figure 8 for Figure 7 Force-displacement curve.

[0030] Figure 9 This is a simulation diagram showing the application of ±5mm vertical displacement followed by ±20mm vertical displacement to the equipment positioning plate.

[0031] Figure 10 for Figure 9 Force-displacement curve.

[0032] Figure 11 This is a simulation diagram showing the application of a ±50mm horizontal displacement to the equipment positioning plate.

[0033] Figure 12 for Figure 11 Force-displacement curve.

[0034] In the picture: 1. Vibration isolation and shock absorber; 11. Horizontal energy-consuming section; 111. Equipment positioning plate; 1111. Sliding hole; 112. Friction plate; 12. Vertical energy-consuming part; 121. Friction plate; 122. Inner sleeve; 123. Outer tube; 1231. First slot; 1232. Second slot; 124. Clamp; 13. Elastic vibration isolation section; 14. Upper pad; 15. Lower pad; 16. Positioning rod; 2. Installation platform; 3. Power equipment. Detailed Implementation

[0035] The technical solutions of 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 some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figures 1-5 In this embodiment of the invention, a vibration isolation and damping device and a vibration isolation and damping system for power equipment include four sets of vibration isolation and damping devices 1 installed on the ground. The power equipment 3 is fixed on the mounting platform 2. The mounting platform 2 is connected and fixed to the equipment positioning plate 111 on each vibration isolation and damping device 1, so that the mounting platform 2 is suspended above the ground. The actual number of vibration isolation and damping devices 1 is not limited; four, six, or eight sets can be arranged.

[0037] The vibration damper 1 includes a vertically arranged positioning rod 16 and an upper pad 14 and a lower pad 15 arranged at both ends of the positioning rod 16. The lower pad 15 is fixed to the ground. The fixing method of the positioning rod 16 to the upper pad 14 and the lower pad 15 is not limited. A threaded structure can be opened on the positioning rod 16 for fixing with nuts or for direct welding.

[0038] The positioning rod 16 is provided with a horizontal energy-consuming part 11 and a vertical energy-consuming part 12. The vertical energy-consuming part 12 includes an inner sleeve 122 and an outer sleeve 123. The inner sleeve 122 is coaxially sleeved outside the positioning rod 16, and the outer sleeve 123 is coaxially sleeved outside the inner sleeve 122.

[0039] To facilitate the assembly and disassembly of the outer sleeve 123, the outer sleeve 123 is designed in half, consisting of two sets of symmetrically arranged half sleeves. The two sets of half sleeves are joined together to form the outer sleeve 123. The positioning rod 16 of the present invention is preferably a screw rod. The inner sleeve 122 can be coaxially fixed to the positioning rod 16 by threaded engagement, or directly sleeved on the positioning rod 16. The upper pad 14 and the lower pad 15 cooperate to clamp and fix the inner sleeve 122, thereby preventing the inner sleeve 122 from moving axially along the positioning rod 16.

[0040] After the inner sleeve 122 and the outer sleeve 123 are installed, they are locked and fixed by clamps 124. Preferably, two sets of clamps 124 are arranged at the upper and lower ends of the outer sleeve 123.

[0041] The outer circumference of the outer sleeve 123 has two sets of first slots 1231 at its upper and lower ends for two sets of clamps 124 to engage and fix it. The inner circumference of the outer sleeve 123 has a second slot 1232 for the friction plate 121 to be inserted. After the friction plate 121 is inserted into the second slot 1232, it abuts against the inner sleeve 122 and can slide and rub along the vertical direction. The sleeve-type structure of the vertical energy dissipation part 12 is locked by the clamps 124. When a large external disturbance such as an earthquake occurs, the equipment positioning plate 111 impacts the clamps 124 from above and below, and the vertical energy dissipation of the equipment is achieved through the friction between the inner sleeve 122 and the outer sleeve 123. The external disturbances in this application include not only earthquakes but also unexpected loads such as explosions and impacts.

[0042] The equipment positioning plate 111 has a sliding hole 1111 on its body. The diameter of the sliding hole 1111 is larger than the outer diameter of the outer sleeve 123, so that the vertical energy dissipation part 12 can pass through the sliding hole 1111, so that the position of the equipment positioning plate 111 is between the two sets of clamps 124.

[0043] The horizontal energy dissipation unit 11 includes two sets of friction plates 112 arranged at the upper and lower ends of the equipment positioning plate 111. The outer sleeve 123 passes through the two sets of friction plates 112, thus forming a coaxial sleeve fit with the two sets of friction plates 112, so that the friction plates 112 can slide axially along the outer sleeve 123, but cannot slide radially. When a large external disturbance such as an earthquake occurs, the equipment positioning plate 111 can be horizontally displaced relative to the friction plates 112 through the sliding hole 1111, thereby achieving a horizontal friction energy dissipation effect. The overall force transmission is clear and easy to replace.

[0044] Elastic vibration isolation parts 13 are arranged along the axial direction of the positioning rod 16 between the friction plate 112 and the upper pad 14, and between the friction plate 112 and the lower pad 15. The elastic vibration isolation part 13 is preferably a disc spring coaxially sleeved outside the positioning rod 16. Both ends of the disc spring abut against the friction plate 112 and the corresponding pad, respectively, so that the friction plate 112 is tightly attached to the equipment positioning plate 111. When the mounting platform 2 causes the equipment positioning plate 111 to move horizontally, the equipment positioning plate 111 can slide horizontally with the mounting platform 2 through its sliding hole 1111. During this displacement, energy is dissipated in the horizontal direction through friction.

[0045] Under the action of two sets of elastic vibration isolation parts 13, the equipment positioning plate 111 is positioned between two sets of clamps 124 and can float up and down. When there is no external disturbance, there is a certain gap between the friction plate 112 and the corresponding clamp 124, so that when the equipment positioning plate 111 floats up and down within a small range, it avoids the position of the clamp 124, and the elastic vibration isolation part 13 and the vertical energy dissipation part 12 can work in stages. The vertical energy dissipation part 12 is located entirely in the inner cavity of the disc spring, along the radial direction of the positioning rod 16, and the vertical energy dissipation part 12 avoids the position of the disc spring. When the vibration in the vertical direction is large, the distance of the disc spring extension or compression is too large. At this time, the friction plate 121 moves up or down and abuts against the clamp 124, thereby pushing the inner sleeve 122 and the outer sleeve 123 to produce relative sliding in the vertical direction. During the sliding, the friction of the friction plate 121 can realize the vertical energy dissipation.

[0046] When there is no external disturbance, only the elastic vibration isolation section 13 is in working condition. The vertical energy dissipation section 12 will not be in working condition due to the large distance between it and the equipment positioning plate 111. The elastic vibration isolation section 13 and the vertical energy dissipation section 12 can work in stages. During normal use, the elastic vibration isolation section 13 works without affecting the vertical energy dissipation section 12. When a large external disturbance such as an earthquake occurs, the vertical energy dissipation section 12 is activated, which can effectively reduce the response of the power equipment 3 and the vibration damper 1, thus protecting them. The proposed staged working mechanism can significantly reduce the use and maintenance costs of the power equipment 3 and the vibration damper 1.

[0047] like Figure 1 As shown, a vibration isolation and damping system for power equipment 3 is designed, using the power equipment 3 as the electric motor. The electric motor parameters are: mass 9016 kg, speed 743 r / min, and dynamic load factor 0.3.

[0048] Vibration isolation design: It is estimated that a total of four vibration isolation dampers 1 will be used under the motor, then the load of a single vibration isolation damper 1 is... F =90160 / 4=22540N.

[0049] Excitation force applied to power equipment 3 ; Where 'a' represents the maximum amplitude of the excitation force. t Indicates time, ω =2π f ; f The excitation force applied to power equipment 3; ω The external excitation force angular frequency; Output displacement y(t) The dynamic equation is: ; Where m is the mass of power equipment 3. k The stiffness of the elastic vibration isolation part 13 is... c represents the damping of the elastic vibration isolation part 13; y ( t ) represents the displacement response of power equipment 3; for y ( t The first derivative of () represents velocity; for y ( t The second derivative of α represents acceleration.

[0050] Based on the vibration isolation theory, the transmission coefficient TR Damping ratio of the overall vibration isolation and damping system ξ The frequency ratio λ is related to the following formula:

[0051]

[0052]

[0053] in, ξ The damping ratio of the entire vibration isolation and damping system; λ The overall frequency ratio of the vibration isolation and damping system; f n This is the natural frequency of the entire vibration isolation and damping system; ω n This refers to the natural angular frequency of the entire vibration isolation and damping system. The vibration isolation and damping system here can be regarded as a whole consisting of the power equipment 3 and four sets of vibration isolation dampers 1.

[0054] Since the disc spring is approximately linear, the damping is considered to be... c= 0, meaning the damping ratio is negligible. ξ The effect of this is approximately:

[0055] If the pre-designed vibration isolation efficiency reaches over 80%, then... TR <0.2, that is λ >2.45, take = f / f n =2.45.

[0056] Motor frequency: f =743 / 60=12.383HZ f n =12.383 / 2.45=5.05HZ

[0057] achievable d s =9.73mm, d s This is the compression of the disc spring under static load.

[0058] The stiffness of the combined disc spring needs to be less than K=F / d s =2316.5N / mm.

[0059] Select and combine disc springs based on their stiffness: Outer diameter 200mm, inner diameter 102mm, thickness 5.5mm, deformable amount 7mm, net height 12.5mm, force is 36100N when the compression is 5.25mm.

[0060] The lower assembly consists of 2 stacked and 10 paired sections, with a height of 180mm and a total compressibility of 70mm. The equivalent stiffness at this configuration is... k =1375N / mm.

[0061] The upper assembly consists of 1 stacked and 10 paired sections, with a height of 125mm and a total compressibility of 70mm. The equivalent stiffness at this configuration is... k =687 N / mm. Total stiffness during vibration. K =2062 N / mm.

[0062] The vibration isolation efficiency of the system is calculated based on the designed disc spring combination, and the stiffness of the designed disc spring combination is... K =2062 N / mm, the compression of the disc spring under static load can be calculated. d s The natural frequency of vibration isolator 1 is 10.93 mm. It is 4.77Hz, a frequency ratio The theoretical transmission coefficient for vibration isolation is 2.6. TR The value is 0.174. Based on the transmission coefficient in vibration isolation theory, the vibration isolation efficiency is calculated to be 82.6%.

[0063] Energy-efficient design: Common brass is used as the material for friction plate 121, with a coefficient of friction of [missing value]. =0.15. The high-strength bolts of the clamp are M8 grade 12.9 bolts, with a preload of 20000N per bolt. Therefore, when the vertical energy dissipation unit is working, it needs to overcome a frictional force of 20000 × 4 × 0.15 × 2 / =16970.5N. The friction force that the horizontal energy dissipation unit 11 needs to overcome when working is related to the weight of the power equipment 3 and the preload applied to the positioning rod 16. The designed preload force on the positioning rod 16 is 33000N, so the friction force that the horizontal energy dissipation unit 11 needs to overcome when working is (22540+33000×2)×0.15=13281N.

[0064] When the power equipment 3 vibrates, considering the dynamic characteristics of the disturbance force, the maximum disturbance force acting on the vibration isolation damper 1 is: =22540×0.3=6762N, and the displacement generated under this disturbance force is 6762 / 2062=3.28mm. In order to ensure that only the disc spring of the vibration isolator 1 is engaged when the power equipment 3 vibrates normally, it is necessary to ensure that the distance between the clamp 124 and the friction plate 112 is greater than the displacement of the vibration isolator 1 under the disturbance force. Therefore, a 5mm gap is left at the top and bottom of the friction plate 112 and the clamp 124 as the working space for the vibration isolation stage.

[0065] To verify the energy dissipation of vibration isolation damper 1, a model of vibration isolation damper 1 was created using Abaqus finite element software. A reciprocating displacement was applied to the vertical energy dissipation section 12, and its hysteresis curve was obtained. The applied displacement and results are described below.

[0066] like Figure 7 As shown, a vertical displacement of ±20mm is applied to the vertical energy-dissipating part 12, and the force-displacement curve of the finite element method is extracted as follows. Figure 8 As shown, the friction force of the vertical energy-consuming part 12 during operation is 16338.2N, which is in good agreement with the design target of 16970.5N, proving the reliability of the design.

[0067] like Figure 9 As shown, a vertical displacement of ±5mm is applied to the equipment positioning plate 111, followed by a vertical displacement of ±20mm. The extraction force-displacement curve is shown below. Figure 10As shown, when the displacement is within ±5mm, the force-displacement curve is linear, meaning that only the disc spring works and the vertical energy dissipation part 12 does not participate in the operation. When the displacement exceeds ±5mm, the force-displacement curve forms a loop, and the area enclosed represents the amount of energy dissipation. At this time, the force-displacement curve is not a traditional rectangle because there is a certain gap between the clamp 124 and the surfaces of the upper and lower friction plates 112. During displacement within this gap, only the disc spring works, and the combined effect forms the force-displacement curve shown in the figure above. This type of force-displacement curve reflects the design goals of the two stages, indicating that on the basis of the first stage of vibration isolation, if there is an external disturbance, such as an earthquake, the displacement response of the power equipment 3 increases, and the vertical energy dissipation part 12 of the vibration isolation damper 1 will work together with the elastic vibration isolation part 13 to dissipate earthquake energy.

[0068] like Figure 11 As shown, a horizontal displacement of ±50mm is applied to the equipment positioning plate 111, and the extraction force-displacement curve is as follows. Figure 12 As shown, the force-displacement curve of the horizontal energy-consuming part 11 is rectangular, which is a typical force-displacement curve for a friction plate. The vertical coordinates in the figure show that the frictional force is 13226 N, which matches well with the theoretical calculation result of 13281 N. The finite element analysis results verify the feasibility of the design.

[0069] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0070] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0071] It should also be noted that in the apparatus, equipment, and methods of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.

[0072] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0073] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A vibration isolation and damping device, characterized in that, The vibration damper (1) includes a positioning rod (16) arranged in the vertical direction, at least two sets of elastic vibration isolation parts (13) that can elastically extend and retract in the vertical direction are arranged on the positioning rod (16), and an equipment positioning plate (111) for fixing the power equipment is arranged between the two elastic vibration isolation parts (13) so that it can float up and down; a vertical energy dissipation part (12) is coaxially arranged on the positioning rod (16) and is offset from the position of the elastic vibration isolation part (13) in the vertical direction. The vertical energy dissipation part (12) and the positioning rod (16) are in static frictional cooperation, and the movement trajectory of the equipment positioning plate (111) in the vertical direction intersects with the vertical energy dissipation part (12); The vertical energy dissipation part (12) includes a sleeve coaxially sleeved outside the positioning rod (16), and at least two sets of clamps (124) located on the two surfaces of the equipment positioning plate (111) respectively lock and fix the sleeve. The movement trajectory of the equipment positioning plate (111) in the vertical direction intersects with the two clamps (124). The sleeve includes an inner sleeve (122) and an outer sleeve (123) that are sequentially fitted to the positioning rod (16) from the inside to the outside. The outer sleeve (123) is in sliding fit with the inner sleeve (122), and the inner sleeve (122) is in static friction fit with the positioning rod (16). A clamp (124) is arranged outside the outer sleeve (123) to press the outer sleeve (123) onto the inner sleeve (122). The outer sleeve (123) has a first groove (1231) on its outer ring that engages with the clamp (124), and a second groove (1232) on its inner ring. The friction plate (121) is arranged in the second groove (1232) and abuts against the inner sleeve (122). The outer sleeve (123) includes two sets of half sleeves, which can be closed to form a sleeve structure. The positioning rod (16) is coaxially arranged with friction plates (112) located on the two surfaces of the equipment positioning plate (111). The friction plates (112) are sleeved and fitted with the sleeve of the vertical energy dissipation part (12). The elastic vibration isolation part (13) abuts against the corresponding friction plate (112) so that the friction plate (112) and the equipment positioning plate (111) are pressed and fixed. In the initial state, there is a gap between the friction plate (112) and the corresponding clamp (124). The equipment positioning plate (111) has a sliding hole (1111) through which the sleeve of the vertical energy dissipation part (12) passes, and the diameter of the sliding hole (1111) is larger than the outer diameter of the sleeve, so that a relative horizontal displacement can be generated between the equipment positioning plate (111) and the friction plate (112). The elastic vibration isolation part (13) is a disc spring arranged coaxially with the positioning rod (16), and the vertical energy dissipation part (12) is arranged in the inner cavity of the disc spring and avoids the position of the disc spring.

2. The vibration isolation and damping device according to claim 1, characterized in that, The positioning rod (16) is coaxially fixed with an upper pad (14) and a lower pad (15), and two elastic vibration isolation parts (13) are located between the upper pad (14) and the equipment positioning plate (111) and between the lower pad (15) and the equipment positioning plate (111), respectively.

3. A vibration isolation and damping system for power equipment, characterized in that, It includes at least four sets of vibration isolation dampers (1) as described in claim 1, and the power equipment (3) is fixed on the installation platform (2). The four corners of the installation platform (2) are connected and fixed to the equipment positioning plates (111) on each vibration isolation damper (1).

4. The vibration isolation and damping system for power equipment according to claim 3, characterized in that, Theoretical transmission coefficient of vibration isolation system for power equipment TR for: in, ξ The damping ratio of the entire vibration isolation and damping system; λ The overall frequency ratio of the vibration isolation and damping system; f n This is the natural frequency of the entire vibration isolation and damping system; ω n This refers to the natural angular frequency of the entire vibration isolation and damping system. m For the quality of the power equipment (3); k The stiffness of the elastic vibration isolation part (13) is given.

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