CN211820516U - Damping framework - Google Patents
Damping framework Download PDFInfo
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- CN211820516U CN211820516U CN202020408647.9U CN202020408647U CN211820516U CN 211820516 U CN211820516 U CN 211820516U CN 202020408647 U CN202020408647 U CN 202020408647U CN 211820516 U CN211820516 U CN 211820516U
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Abstract
The utility model discloses a damping framework, including constructing into open or confined a plurality of cavity profile structure and filling at the inside damping material of cavity profile structure, cavity profile structure is formed by the concatenation of a plurality of wall components, through the mutual fixed connection of connecting piece between a plurality of cavity profile structure, and damping material is for bulk damping granule or for the damping granule bag by the elasticity bag parcel. The utility model discloses a damping framework can with external equipment rigid connection, when the external equipment vibration, on its vibration transmitted the damping framework, because the high damping effect of damping framework, consume energy rapidly, block the outside transmission of vibration to reach the effect of damping, vibration isolation. The framework has large structural damping, the low transmission effect of structural vibration can be met, and the vibration generated by external equipment passes through the damping framework to achieve the noise reduction effect on a system. The framework can inhibit the propagation of elastic waves, and is the best choice for supporting structures of equipment such as a high-speed rail power pack framework, a fan base and the like.
Description
Technical Field
The utility model relates to an electromechanical device technical field, in particular to damping framework.
Background
The bogie of the high-speed rail motor car, the base of equipment such as a fan, a motor and the like are key components for bearing the equipment, the bogie of the high-speed rail motor car, a power pack framework and the like are key functional units in the running process of the high-speed rail motor car, the high longitudinal rigidity and the diagonal rigidity of the bogie framework meet the key requirements of the running process of a train in the running process of the train, in addition, in the running process of the train, excitation of wheel rails and the excitation are transferred to the bogie of the train through wheels, higher requirements are provided for the dynamic strength of the bogie, and therefore the bogie framework is usually manufactured by using heavier materials and production cost. In addition to the high technical costs, this also results in a truck frame with a high weight. However, the light weight of the train is the subsequent key, and how to design the train bogie, the dynamic stiffness of the train bogie can be met, and the dynamic strength of the train bogie can also be ensured, which becomes a hot point of research of people.
The bearing base of electromechanical equipment such as a fan, a motor, a water pump and the like which are commonly used in a building is a simple channel steel base which is most commonly used at present, and a vibration isolator is arranged on the channel steel base. However, because the damping of the channel steel structure is small, the vibration of the equipment can be quickly transmitted to the vibration isolator through the channel steel, but because the vibration isolation technology is limited, the vibration isolation efficiency of the current best vibration isolator cannot meet the requirements of owners, and for the equipment installed on a floor slab, the vibration of the equipment can be transmitted to the floor through the vibration isolator, so that noise is caused, and complaints of the owners are caused. Therefore, whether a high-damping frame is designed on the basis of the existing vibration isolation element or not can replace the existing channel steel base, so that the vibration of equipment is quickly attenuated after passing through the damping frame, and the vibration isolation efficiency is improved.
In addition, some static objects or objects that travel on a particular track or shelf require a stable environment to allow them to work accurately. However, when an ordinary frame or a carrying device is disturbed by the outside, the two devices can generate relative displacement and generate vibration, so that the work cannot be smoothly carried out or the stable operation state can be damaged. Therefore, the conventional frame device cannot meet the demand of a device which needs to work in a high-precision environment.
In view of the above, it is desirable to optimize the existing carrying device so as to provide a device capable of maintaining a stable working environment.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a damping frame with high static stiffness and low vibration transfer, which can be used to stabilize the whole device rapidly after the frame or the bearing device is disturbed by the disturbance, thereby ensuring a good working environment.
In order to realize the purpose, the utility model discloses a technical scheme as follows:
a damping framework comprises a plurality of open or closed hollow profile structures and damping materials filled in the hollow profile structures, wherein the hollow profile structures are formed by splicing a plurality of wall elements, the hollow profile structures are fixedly connected with one another through connecting pieces, and the damping materials are discrete damping particles or damping particle bags wrapped by elastic bags.
In one filling mode, the damping particles are one or more of iron alloy particles, copper alloy particles, manganese alloy particles and zinc alloy particles.
In another filling mode, the damping particles filled in the hollow contour structures at the corners of the damping frame are first damping particles, the damping particles filled in the hollow contour structures at the other positions are second damping particles, the particle size of the first damping particles is smaller than that of the second damping particles, and the specific gravity of the first damping particles is greater than that of the second damping particles.
The first damping particles are one or more of iron alloy particles, copper alloy particles, manganese alloy particles and zinc alloy particles, and the second damping particles are one or more of fine sand particles, ceramic particles, rubber particles and plastic particles.
Further, the cross section of the inner cavity of the hollow profile structure is circular or polygonal, and the filling rate of the damping material in the inner cavity of each hollow profile structure is 90-95%.
Further, the thickness of the wall element is 3-8 mm.
Further, the relation between the spherical radius r of the outer sphere of the damping particle or the outer sphere of the particle bag and the cavity depth D of the inner cavity of the filled hollow profile structure is as follows: r is less than or equal to D/10. The damping particles are spheres with the diameter of 0.001-100 mm, ellipsoids with the length of the long axis and the short axis of 0.001-100 mm, regular polyhedrons with the side length of 0.001-100 mm or irregular polyhedrons with the side length of 0.001-100 mm. The surface friction factor of the damping particles is 0.01-0.99, the surface recovery coefficient is 0.3-0.8, and the density is 0.1-30 g/cm3。
Further, the connecting piece is a hollow structural body or a solid structural body, and the connecting piece is rigidly connected with the hollow profile structure through one of welding, riveting and bolt connection.
And the elastic element is used for damping and is arranged at the bottom of the hollow profile structures, and the elastic element is one or more of a spring vibration isolator, a metal wire vibration isolator and a rubber vibration isolator.
Wherein the total mass m of the damping particlespN number of elastic elements, load T of single elastic elementiFramework and bearing device mass miThe relationship between them is:
mx＝1.3nTi-∑mi。
the utility model discloses following beneficial effect has: compared with the prior art, the utility model provides a damping structure can reduce the frame quality or reduce the time that the device stabilized down, combines granule and bearing device together simultaneously, and when the damping granular material who fills in the cavity profile structure received the great excitement in the external world, the damping granule in every cavity profile structure can produce the motion, and the mechanical energy of exciting with the external world is through the spin friction between the particle, collision and the friction and collision between granule and the damping tank wall and is dissipated. When the external disturbance is small, the accumulation state of the particles is not enough to be destroyed, and the particles show a quality effect, so that the device can be quickly stabilized. Therefore, the requirement that the bearing device is in a stable working environment is met. Meanwhile, the particle energy consumption is irrelevant to the direction of external disturbance, and the disturbance in any direction in the space has an obvious stabilizing effect.
Drawings
Fig. 1 is a schematic structural diagram of a high-speed rail steering damping frame in the first embodiment.
Fig. 2 is a schematic structural diagram of a granule bag.
FIG. 3 is a graph comparing the vibration input and output curves of a high-speed rail steering damping framework filled with damping particles and unfilled with damping particles.
Fig. 4 is a schematic view of the installation of the vibration isolation base of the second wind turbine according to the embodiment.
FIG. 5 is a schematic perspective view of a damping frame of a second embodiment of the present invention.
Description of the main component symbols: 100. a fan damping framework; 101. reinforcing ribs; 1. a hollow profile structure; 10. a wall element; 100. reinforcing ribs; 21. iron alloy particles; 22. an elastic bag; 23. fine sand particles; 24. ceramic particles; 3. a fan; 4. an elastic element.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
Example one
As shown in fig. 1 and 2, the high-speed rail bogie type damping framework comprises a hollow profile structure 1 which is constructed to be open and damping materials filled in the hollow profile structure 1, wherein the hollow profile structure 1 is formed by splicing a plurality of wall elements 10, and the thickness of each wall element 10 is 5 mm. In order to further increase the overall strength of the hollow profile structure 1, reinforcing ribs 101 can also be provided inside the hollow profile structure 1. The damping material is an iron alloy particle 21 with the particle size of 3mm or an iron alloy particle 21 bag wrapped by an elastic bag 22, and the filling rate of the iron alloy particle 21 or the iron alloy particle 21 bag in the inner cavity of each hollow outline structure 1 is 95%.
Performing a vibration test by using the outer surface of the high-speed rail bogie type damping framework as a test point, wherein the test result is shown in fig. 3, and a solid line in the test result is a vibration input and output curve when damping particles are not filled; in the figure, the dashed line b represents the vibration input/output curve when the damping particles are filled. It can be seen from the figure that, compared with the conventional frame, the damping frame of the present embodiment has a peak amplitude reduction in the principal vibration direction of 83%, and has a better vibration damping effect.
Example two
As shown in fig. 4 and 5, the vibration isolation base for the fan comprises a fan damping framework 100 and a fan 3 fixedly installed on the fan damping framework 100 through bolt connection. The fan damping frame 100 comprises a hollow profile structure 1 configured to be closed, a damping material filled inside the hollow profile structure 1, and an elastic element 4 mounted at the bottom of several hollow profile structures 1. The elastic element 4 is one or more of a spring vibration isolator, a metal wire vibration isolator and a rubber vibration isolator. Wherein the total mass m of the damping particlespThe number n of elastic elements 4, and the load T of a single elastic element 4i Fan damping frame 100 and fan mass miThe relationship between them is:
mp＝1.3nTi-∑mi。
the hollow profile structure 1 is formed by a number of wall elements 10 which are joined together, the thickness of the wall elements 10 being 5 mm. In order to further increase the overall strength of the hollow profile structure 1, reinforcing ribs 101 can also be provided inside the hollow profile structure 1. The damping material filled in the hollow outline structure 1 at the four corners of the fan damping framework 100 is ferroalloy particles 21 with the particle size of 3mm, and the damping material filled in the hollow outline structure 1 at the other positions is fine sand particles 23 with the particle size of 4mm or ceramic particles 24 with the particle size of 5 mm. The filling rate of the ferroalloy particles in the interior cavity of each hollow profile 1 was 95%.
Under the condition that the external disturbance (the fan 3) is large, the accumulation state of the damping particles is destroyed to generate a damping effect, and the borne device is in a stable working environment by the friction and the collision among the particles and the friction and the collision of the particles on the wall surface of the hollow outline structure 1 to quickly consume energy. Meanwhile, the particle damping material has the omni-directional property, the damping effect of the particles is irrelevant to the external disturbance direction, the disturbance to any direction can be rapidly and effectively reduced, and the applicability is strong.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A damping frame, characterized by: the damping material is discrete damping particles or damping particle bags wrapped by elastic bags.
2. A damping frame as claimed in claim 1, wherein: the damping particles are one or more of iron alloy particles, copper alloy particles, manganese alloy particles and zinc alloy particles.
3. A damping frame as claimed in claim 1, wherein: damping particles filled in the hollow outline structures at the corners of the damping framework are first damping particles, damping particles filled in the hollow outline structures at the other positions are second damping particles, the particle size of the first damping particles is smaller than that of the second damping particles, and the specific gravity of the first damping particles is larger than that of the second damping particles.
4. A damping frame as claimed in claim 3, wherein: the first damping particles are one or more of iron alloy particles, copper alloy particles, manganese alloy particles and zinc alloy particles, and the second damping particles are one or more of fine sand particles, ceramic particles, rubber particles and plastic particles.
5. A damping frame as claimed in claim 1, wherein: the cross section of the inner cavity of each hollow profile structure is circular or polygonal, and the filling rate of the damping material of the inner cavity of each hollow profile structure is 90-95%.
6. A damping frame as claimed in claim 1, wherein: the thickness of the wall element is 3-8 mm.
7. A damping frame as claimed in claim 1, wherein: the relation between the spherical radius r of the external ball of the damping particle or the external ball of the particle bag and the cavity depth D of the internal cavity of the filled hollow outline structure is as follows: r is less than or equal to D/10, the damping particles are spheres with the diameter of 0.001-100 mm, ellipsoids with the length of the long and short axes of 0.001-100 mm, regular polyhedrons with the side length of 0.001-100 mm or irregular polyhedrons with the side length of 0.001-100 mm, the surface friction factor of the damping particles is 0.01-0.99, the surface recovery coefficient is 0.3-0.8, and the density is 0.1-30 g/cm.
8. A damping frame as claimed in claim 1, wherein: the connecting piece is a hollow structural body or a solid structural body, and the connecting piece is rigidly connected with the hollow outline structure through one of welding, riveting and bolt connection.
9. A damping frame as claimed in claim 1, wherein: the shock-absorbing structure is characterized by further comprising elastic elements for shock absorption, wherein the elastic elements are installed at the bottoms of the hollow profile structures and are one or more of spring vibration isolators, metal wire vibration isolators and rubber vibration isolators.
10. A damping frame as claimed in claim 9 wherein: total mass of the damping particles
N number of elastic elements, load of single elastic element
Framework and bearing device mass and
the relationship between them is:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020408647.9U CN211820516U (en) | 2020-03-26 | 2020-03-26 | Damping framework |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020408647.9U CN211820516U (en) | 2020-03-26 | 2020-03-26 | Damping framework |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112389472A (en) * | 2020-11-02 | 2021-02-23 | 中车唐山机车车辆有限公司 | Power assembly system common framework, design method thereof and railway vehicle |
| CN113404800A (en) * | 2021-07-13 | 2021-09-17 | 厦门振为科技有限公司 | Space rod piece structure vibration damping device and method |
| CN114210784A (en) * | 2021-12-15 | 2022-03-22 | 唐山市三川钢铁机械制造有限公司 | Plate rolling device based on particle damping vibration attenuation and damping vibration attenuation design method thereof |
| CN114607720A (en) * | 2022-03-17 | 2022-06-10 | 江苏科技大学 | Particle damper with built-in barrier network |
-
2020
- 2020-03-26 CN CN202020408647.9U patent/CN211820516U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112389472A (en) * | 2020-11-02 | 2021-02-23 | 中车唐山机车车辆有限公司 | Power assembly system common framework, design method thereof and railway vehicle |
| CN113404800A (en) * | 2021-07-13 | 2021-09-17 | 厦门振为科技有限公司 | Space rod piece structure vibration damping device and method |
| CN114210784A (en) * | 2021-12-15 | 2022-03-22 | 唐山市三川钢铁机械制造有限公司 | Plate rolling device based on particle damping vibration attenuation and damping vibration attenuation design method thereof |
| CN114607720A (en) * | 2022-03-17 | 2022-06-10 | 江苏科技大学 | Particle damper with built-in barrier network |
| CN114607720B (en) * | 2022-03-17 | 2024-04-19 | 江苏科技大学 | Particle damper with built-in barrier network |
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