AVM heavy spring type vibration reduction table
AVM heavy-duty spring-type vibration damping tables, which incorporate spring assemblies and damping components between the equipment and the platform or hull, solve the problems of increased equipment vibration and stress, achieving efficient vibration isolation and noise reduction, and ensuring the safety and service life of the equipment, platform, or hull.
Patent Information
- Application Number
- CN202422464838.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-12
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-10-12
AI Technical Summary
In the existing technology, equipment such as gas turbines and steam turbines are rigidly connected to offshore platforms or ship hulls, which leads to increased equipment vibration and stress, affecting the service life of the equipment and the platform or ship hull.
The AVM heavy-duty spring-type vibration damping table is used to achieve vibration reduction and stress release by setting spring assemblies and damping components between the equipment and the platform or hull. It includes top plate, bottom plate, bolts and spring assemblies, and the design takes into account factors such as high and low temperatures and hull tilt.
It ensures the safe operation of the equipment and the integrity of the platform or hull structure, with a vibration isolation effect of over 98%, noise reduction of 35dB, and a service life of 25-30 years.
Smart Images
Figure CN223469649U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of AVM heavy spring type damping platform, more particularly to a kind of AVM heavy spring type damping platform with good anti-vibration effect, mainly applied to the vibration isolation and impact resistance occasions of gas turbine, steam turbine, compressor, life module of ship warship or offshore platform equipment. BACKGROUND
[0002] Gas turbine and steam turbine or compressor equipment are applied to offshore platform or FPSO, and will be subjected to ±22.5 degrees inclination generated when high and low temperature, heavy salt fog and ship body travel in sea, and vibration problem caused by additional impact and equipment self-rotation, currently offshore platform equipment and shipborne equipment are rigidly connected, when equipment is rigidly connected with offshore platform or ship body, kinetic energy generated by equipment self-rotation cannot be effectively converted into other forms of energy and released during long-time working process of equipment. This kinetic energy often leads to the increase of vibration and stress between equipment and platform or ship body, and long-time vibration will affect the service life of offshore platform structure or ship body and equipment. SUMMARY
[0003] The technical problem to be solved by the utility model is to provide a kind of AVM heavy spring type damping platform, with the characteristics of good anti-vibration effect.
[0004] To solve the above technical problems, the technical scheme of the utility model is as follows: a kind of AVM heavy spring type damping platform, the innovation point is that the AVM heavy spring type damping platform includes bottom plate, top plate arranged above the bottom plate, bolt connecting the top plate and the bottom plate, spring assembly arranged between the bottom plate and the top plate, top bolt connected with external components is arranged on the top plate;Damping member is arranged between the bottom plate and the top plate.
[0005] Preferably, the top plate is provided with a lower mounting plate below the top plate, and the bottom surface of the lower mounting plate does not contact the bottom plate in the use state of the AVM heavy spring type damping platform;
[0006] The bottom plate is provided with an upper mounting plate above the bottom plate, and the top surface of the upper mounting plate does not contact the top plate in the use state of the AVM heavy spring type damping platform;
[0007] One end of the spring assembly is fixedly installed on the top plate / bottom plate, and the other end of the spring assembly abuts against the bottom plate / top plate in the use state of the AVM heavy spring type damping platform.
[0008] Preferably, two of the lower mounting plates are symmetrically arranged on the top plate with respect to the center of the top plate, and two of the upper mounting plates are symmetrically arranged on the bottom plate with respect to the center of the bottom plate, and the spring assembly is located in the region enclosed by the two upper mounting plates and the two lower mounting plates.
[0009] Preferably, the lower mounting plate is a lower open sleeve structure arranged below the top plate, the upper mounting plate is an upper open sleeve structure arranged above the bottom plate, and the spring assembly is located in the region enclosed by the upper mounting plate and the lower mounting plate.
[0010] Preferably, the surface of the lower mounting plate opposite to the upper mounting plate is in clearance fit or transition fit with the upper mounting plate.
[0011] Preferably, when the surface of the lower mounting plate opposite to the upper mounting plate is in clearance fit with the upper mounting plate, an elastic element is arranged between the lower mounting plate and the upper mounting plate and fixedly mounted on the lower mounting plate or the upper mounting plate.
[0012] Preferably, the upper mounting plate is mounted inside the lower mounting plate and close to the spring assembly.
[0013] Preferably, the spring assembly comprises a first spring and a second spring arranged inside the first spring, the center axes of the first spring and the second spring coincide or are parallel, and the damper is arranged in the core of the second spring.
[0014] Preferably, a wire mesh pad is arranged between the first spring and the second spring to compensate for the missing damping of the spring itself.
[0015] Preferably, the bolt connecting the top plate and the bottom plate comprises a bolt column arranged vertically and fixedly mounted on the bottom plate at the lower end, a nut screwed on the bolt column and passing through the top plate, and a gasket sleeved on the bolt column and located between the nut and the top plate.
[0016] One of the bolts is symmetrically arranged between the top plate and the bottom plate with respect to the center of the top plate.
[0017] At least one of the spring assemblies is arranged between the bottom plate and the top plate.
[0018] The utility model discloses the advantages are in: through adopting above -mentioned structure, utilize the spring assembly and the damping piece that are arranged between top plate and bottom plate to realize the shock absorption and stress release measure, to ensure the safe operation of equipment and the structural integrity of platform or ship body, and the equipment installed on offshore platform when receiving sea wind and typhoon or earthquake, the long -term equipment and platform can exist safety hidden danger after the external impact force that produces.
[0019] The vibration isolation effect of the AVM heavy spring type damping table can reach more than 98% after the equipment is installed, and the noise reduction is nearly 35dB, effectively protecting the safety of the equipment itself and the offshore platform or the hull structure, the AVM heavy spring type damping table itself considers the problems of high and low temperature, heavy salt fog and inclination generated when the hull sails in the sea during design, and the service life can reach 25-30 years. BRIEF DESCRIPTION OF DRAWINGS
[0020] The utility model will be described further in detail in combination with the drawings and specific embodiments.
[0021] Figure 1 It is a transverse sectional view of the AVM heavy spring type damping table comprising a spring assembly.
[0022] Figure 2 It is a longitudinal sectional view of the AVM heavy spring type damping table comprising two spring assemblies.
[0023] Figure 3 It is a plan view of the AVM heavy spring type damping table.
[0024] In the figure: 1-bottom plate, 2-top plate, 3-bolt, 4-top bolt, 5-damping piece, 6-lower mounting plate, 7-upper mounting plate, 8-elastic element, 9-first spring, 10-second spring. DETAILED DESCRIPTION
[0025] The AVM heavy spring type damping table comprises a bottom plate 1, a top plate 2 arranged above the bottom plate 1, a bolt 3 connecting the top plate 2 and the bottom plate 1, a spring assembly arranged between the bottom plate 1 and the top plate 2, and a top bolt 4 arranged on the top plate 2 and connected with external components. A damping piece 5 is arranged between the bottom plate 1 and the top plate 2. Through the above structure, the spring assembly and the damping piece 5 arranged between the top plate 2 and the bottom plate 1 realize damping and stress release measures, so as to ensure the safe operation of the equipment and the structural integrity of the platform or the hull, and the safety hidden danger of the equipment and the platform caused by the external impact force when the equipment installed on the offshore platform is subjected to sea wind, typhoon or earthquake for a long time. The vibration isolation effect of the AVM heavy spring type damping table can reach more than 98% after the equipment is installed, and the noise reduction is nearly 35dB, effectively protecting the safety of the equipment itself and the offshore platform or the hull structure, the AVM heavy spring type damping table itself considers the problems of high and low temperature, heavy salt fog and inclination generated when the hull sails in the sea during design, and the service life can reach 25-30 years.
[0026] The top plate 2 is provided with a lower mounting plate 6 below the top plate 2, the bottom surface of the lower mounting plate 6 does not contact the bottom plate 1 in the use state of the AVM heavy spring type damping table; the bottom plate 1 is provided with an upper mounting plate 7 above the bottom plate 1, the top surface of the upper mounting plate 7 does not contact the top plate 2 in the use state of the AVM heavy spring type damping table. One end of the spring assembly is fixedly installed on the top plate 2 / bottom plate 1, and the other end of the spring assembly abuts against the bottom plate 1 / top plate 2 in the use state of the AVM heavy spring type damping table.
[0027] The upper mounting plate 7 and the lower mounting plate 6 are of a plate type and a sleeve type. When the plate type structure is adopted: the top plate 2 is provided with two lower mounting plates 6 symmetric to the center of the top plate, the bottom plate 1 is provided with two upper mounting plates 7 symmetric to the center of the bottom plate, and the spring assembly is located in the region enclosed by the two upper mounting plates 7 and the two lower mounting plates 6. When the sleeve type structure is adopted: the lower mounting plate 6 is a sleeve structure with a lower opening arranged below the top plate 2, the upper mounting plate 7 is a sleeve structure with an upper opening arranged above the bottom plate 1, and the spring assembly is located in the region enclosed by the upper mounting plate 7 and the lower mounting plate 6.
[0028] When the upper mounting plate 7 and the lower mounting plate 6 are installed and used, the surface of the lower mounting plate 6 opposite to the upper mounting plate 7 is matched with the upper mounting plate 7 by a gap or a transition. In order to avoid the deviation from the preset in the movement process, when the surface of the lower mounting plate 6 opposite to the upper mounting plate 7 is matched with the upper mounting plate 7 by a gap, an elastic element 8 is arranged between the lower mounting plate 6 and the upper mounting plate 7 and fixedly installed on the lower mounting plate 6 or the upper mounting plate 7; the upper mounting plate 7 is installed on the inner side of the lower mounting plate 6 and close to the spring assembly.
[0029] The spring assembly comprises a first spring 9 and a second spring 10 arranged inside the first spring 9, the center axes of the first spring 9 and the second spring 10 coincide or are parallel, and the damping is arranged in the core of the second spring 10. A steel wire mesh pad is arranged between the first spring 9 and the second spring 10 to compensate for the missing damping of the spring itself. The minimum rotating equipment above the base is taken as a vibration source to select the excitation frequency of the AVM heavy spring type damping table, the rotating speed of the utility model is low, the AVM heavy spring type damping table is selected, and the natural frequency is 3-5 Hz.
[0030] The bolt 3 connecting the top plate 2 and the bottom plate 1 comprises a bolt column vertically arranged and fixedly installed on the bottom plate 1, a nut screwed on the bolt column and penetrating through the top plate 2, and a gasket sleeved on the bolt column and located between the nut and the top plate 2. One bolt 3 is symmetrically arranged between the top plate 2 and the bottom plate 1 and left and right symmetric to the spring assembly. In order to ensure the damping effect, at least one spring assembly is arranged between the bottom plate 1 and the top plate 2.
[0031] The AVM heavy spring type damping table of the utility model considers the compression and stretching and the impact force in the horizontal direction after being subjected to the additional load in the design, the equipment absorbs the vibration and impact through the damping element of the AVM heavy spring type damping table, so as to realize the vibration of the equipment itself and the offshore platform structure and the ship body, effectively protect the use condition of the offshore platform structure and the equipment, the equipment generates the corresponding amplitude when working, because the spring assembly is arranged in the AVM heavy spring type damping table as the damping element, the spring assembly can absorb the amplitude generated by the equipment to realize the vibration isolation.
[0032] The above embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as the limitation of the patent scope of the application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.
Claims
1. An AVM heavy-duty spring-type vibration isolation table, characterized by: The AVM heavy spring type damping table comprises a bottom plate, a top plate arranged above the bottom plate, a bolt connecting the top plate and the bottom plate, a spring assembly arranged between the bottom plate and the top plate, and a top bolt arranged on the top plate and connected with an external component; a damping member is arranged between the bottom plate and the top plate; the spring assembly comprises a first spring and a second spring arranged inside the first spring, the central axes of the first spring and the second spring coincide or are parallel, and the damping member is arranged in the core of the second spring.
2. The AVM heavy-duty spring-type vibration isolation table of claim 1, wherein: A lower mounting plate is arranged below the top plate, and the bottom surface of the lower mounting plate does not contact the bottom plate in the use state of the AVM heavy spring type damping table; An upper mounting plate is arranged above the bottom plate, and the top surface of the upper mounting plate does not contact the top plate in the use state of the AVM heavy spring type damping table; One end of the spring assembly is fixedly installed on the top plate / bottom plate, and the other end of the spring assembly abuts against the bottom plate / top plate in the use state of the AVM heavy spring type damping table.
3. An AVM heavy-duty spring-type vibration isolation table as claimed in claim 2, characterized in that: Two lower mounting plates are symmetrically arranged on the top plate with respect to the center of the top plate, two upper mounting plates are symmetrically arranged on the bottom plate with respect to the center of the bottom plate, and the spring assembly is located in the region enclosed by the two upper mounting plates and the two lower mounting plates.
4. The AVM heavy-duty spring-type shock absorbing platform according to claim 2, wherein: The lower mounting plate is a lower open sleeve structure arranged below the top plate, the upper mounting plate is an upper open sleeve structure arranged above the bottom plate, and the spring assembly is located in the region enclosed by the upper mounting plate and the lower mounting plate.
5. An AVM heavy-duty spring-type vibration table as claimed in claim 3 or 4, characterized in that: The surface of the lower mounting plate opposite to the upper mounting plate is in clearance fit or transition fit with the upper mounting plate.
6. An AVM heavy-duty spring-type shock absorbing platform according to claim 5, characterized in that: When the surface of the lower mounting plate opposite to the upper mounting plate is in clearance fit with the upper mounting plate, an elastic element fixedly installed on the lower mounting plate or the upper mounting plate is arranged between the lower mounting plate and the upper mounting plate.
7. The AVM heavy-duty spring-type vibration table of claim 2, wherein: The upper mounting plate is installed inside the lower mounting plate and close to the spring assembly.
8. The AVM heavy-duty spring-type vibration table of claim 1, wherein: A steel wire mesh pad is arranged between the first spring and the second spring to compensate for the missing damping of the spring itself.
9. The AVM heavy-duty spring-type shock absorbing platform according to claim 1, wherein: The bolt connecting the top plate and the bottom plate comprises a bolt column arranged vertically and fixedly installed at the lower end of the bottom plate, a nut screwed on the bolt column penetrating through the top plate, and a gasket sleeved on the bolt column and located between the nut and the top plate; One bolt is symmetrically arranged between the top plate and the bottom plate with respect to the center of the top plate; At least one spring assembly is arranged between the bottom plate and the top plate.