CN215110243U - Vibration damping space rod piece structure - Google Patents
Vibration damping space rod piece structure Download PDFInfo
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- CN215110243U CN215110243U CN202121608753.2U CN202121608753U CN215110243U CN 215110243 U CN215110243 U CN 215110243U CN 202121608753 U CN202121608753 U CN 202121608753U CN 215110243 U CN215110243 U CN 215110243U
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Abstract
The utility model discloses a damping space rod structure, be in including space rod structure and set firmly structural damping attenuator in space rod, damping attenuator include casing and a plurality of damping granule, inclosed die cavity has been seted up to the inside of casing, a plurality of damping granule fill in the middle of the die cavity, space rod structure be the truss structure that comprises a plurality of plane rod structure combination. The utility model discloses structural the damping attenuator that has set firmly a plurality of band stop buddhist nun granules of space member in the middle of, after the vibration takes place, whole space member structure can be steady fast, effectively reduces the amplitude of vibration, reduces the vibration energy transmission, reaches the peak effect that disappears.
Description
Technical Field
The utility model relates to a damping technical field, in particular to damping space member structure.
Background
Space bar structures were first found in the aerospace and construction fields and have found widespread use. Solar cell panel supports, radio communication antennas, telescopic mechanical arms, steel frame towers, bridges and the like of satellites and space stations are basically formed by space rod piece structures. The space rod structure is widely applied to a plurality of fields, but the vibration problem of the space rod structure is difficult to avoid all the time, and serious influence is easily caused.
For example, in the field of ships, the vibration generated during the sailing process of the ship easily affects the safety of the ship and the physical health of personnel on the ship, and certain vibration isolation measures are required to be adopted for control.
In the building field, as for some high-rise building truss structures, vibration can be generated temporarily when wind power disturbance or earthquake occurs, on one hand, fatigue damage is generated on the structure, the reliability of the structure is reduced, the safety and durability of the structure are affected, the life and property safety of residents is threatened, on the other hand, noise is generated, the normal life of residents is affected, and vibration needs to be reduced through building vibration isolation products.
In the field of aerospace, as a spacecraft gradually develops towards the direction of high precision and high stability, the loaded effective load has high requirement on the attitude stability of a platform, the micro-vibration of the spacecraft platform needs to be reduced as much as possible to improve the attitude stability of the platform, and one of the main sources of the micro-vibration of the spacecraft is the flexible vibration of the solar wing.
The existing spacecraft platform is basically provided with a movable solar wing, the connection rigidity of the movable solar wing and the platform is low, and once the spacecraft carries out orbit transfer or attitude adjustment, micro-vibration can be generated, so that the attitude stability of the platform is reduced. More seriously, when the solar wing enters and exits the sun shadow, the external heat flow is changed violently, which may cause the solar wing to vibrate thermally, and the attitude stability of the spacecraft platform is seriously reduced. In addition, when the flexible solar wing changes the orbit and adjusts the attitude of the spacecraft or the internal parts do mechanical motion, the problem that the vibration is difficult to automatically attenuate is generated, the normal work of the whole spacecraft is influenced, and even the structure of the spacecraft is damaged.
It can be seen that the application of the space rod structure is wide, but the influence of vibration is not negligible, and therefore, a vibration-damping space rod structure with higher stability and speed is needed.
SUMMERY OF THE UTILITY MODEL
To the problem, an object of the utility model is to provide a steady fast space member structure.
In order to realize the purpose, the utility model discloses a technical scheme as follows:
the utility model provides a damping space rod structure, includes space rod structure and sets firmly structural damping attenuator in the space rod, damping attenuator include casing and a plurality of damping granule, inclosed die cavity has been seted up to the inside of casing, a plurality of damping granule fill in the middle of the die cavity, space rod structure be the truss structure that comprises a plurality of plane rod structure combinations.
Further, the vibration damper is installed at a modal point or an energy junction point on the spatial rod structure.
Furthermore, one or more partition plates for dividing the cavity into a plurality of chambers are arranged in the cavity. The shape and structure of the cavity are not particularly limited, and the cavity can be made into a cuboid, a cylinder or other shapes according to practical application conditions. Meanwhile, the partition plates can be selectively additionally arranged to promote damping particles to be fully contacted with the shell, so that the dissipation of vibration energy is accelerated, and the vibration reduction effect is improved.
Further, the filling rate of the damping particles in the cavity is 10% -100%.
Furthermore, the damping particles are made of steel or tungsten-based materials or ceramic materials, the longest diameter of the damping particles is 0.1-12 mm, and the density of the damping particles is 1.2g/cm3～18.3g/cm3The surface friction factor is 0.02-0.99, and the surface recovery coefficient is 0.1-1.
Furthermore, the shell is made of steel or aluminum, and an antirust electroplated layer is arranged on the outer surface of the shell. The anti-rust electroplated layer is added, so that the service life of the vibration damper can be prolonged, and the corrosion can be prevented.
Further, the plane member structure include upper chord member, parallel arrangement be in the lower chord member of upper chord member below, respectively with upper chord member and lower chord member looks rigid coupling constitute rectangular frame's first montant, one end rigid coupling be in upper chord member center department other end rigid coupling is in the second montant of lower chord member center department, divide and establish second montant both sides and one end with upper chord member looks rigid coupling other end with the first down tube of lower chord member looks rigid coupling, both ends all with the cross web member and a plurality of second down tube of first down tube looks rigid coupling, the one end of second down tube with first down tube looks rigid coupling, the other end with second montant looks rigid coupling.
Furthermore, a base is arranged at the bottom of the space rod structure, and a plurality of vibration isolators are arranged between the space rod structure and the base.
Furthermore, the space rod piece structure is a solar wing.
Furthermore, the cross section of the shell is in a T shape, and a packaging layer made of flexible materials is coated outside the damping particles.
The utility model discloses following beneficial effect has: 1. the vibration reduction damper with damping particles is fixedly arranged on the space rod piece structure, when vibration occurs, the whole space rod piece structure can be fast and stable, the amplitude of the vibration is effectively reduced, the vibration energy transmission is reduced, and the peak eliminating effect is achieved; 2. the vibration reduction damper is arranged at a modal point or an energy intersection point on the space rod piece structure, so that the vibration reduction effect is better; 3. the damping attenuator that sets firmly simple structure, it is convenient to install, conveniently adjusts according to the vibration condition of difference, and the restriction during use is less, all has obvious damping effect at full frequency channel, and especially high frequency channel damping effect is better, can improve the high frequency standing wave problem that the vibration isolation arouses, alleviates high frequency standing wave phenomenon.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of a vibration damper without partition according to an embodiment of the present invention;
FIG. 3 is a schematic view of a structure of a vibration damper with a partition plate according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a second embodiment of the present invention;
FIG. 5 is a schematic diagram of a third embodiment of the present invention;
FIG. 6 is a sectional view of the third embodiment of the present invention without a partition plate;
fig. 7 is a sectional schematic view of the structure with a partition plate of the three vibration dampers of the embodiment of the present invention.
Description of the main component symbols: 1. a spatial bar structure; 11. a planar bar member; 111. an upper chord; 112. a lower chord; 113. a first vertical bar; 114. a second vertical bar; 115. a first diagonal member; 116. a second diagonal member; 117. a cross web member; 2. a base; 3. a vibration isolator; 4. a vibration-damping damper; 41. a housing; 42. a cavity; 43. damping particles; 44. a partition plate; 45. and (7) packaging the layer.
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. 1-3, a vibration damping spatial rod structure 1 includes a spatial rod structure 1 and a vibration damping damper 4 fixedly disposed on the spatial rod structure 1, the vibration damping damper 4 includes a housing 41 and a plurality of damping particles 43, a closed cavity 42 is disposed inside the housing 41, the plurality of damping particles 43 are filled in the cavity 42, and the spatial rod structure 1 is a truss structure formed by combining a plurality of planar rod structures 11.
The vibration damper 4 is installed at a modal point or an energy junction point on the spatial rod structure 1. The cavity 42 is internally provided with one or more partition plates 44 for dividing the cavity into a plurality of chambers, and the filling rate of the damping particles 43 in the cavity 42 is 10-100%. The damping particles 43 are made of steel, tungsten-based material or ceramic material, and have a longest diameter of 0.1-12 mm and a density of 1.2g/cm3～18.3g/cm3The surface friction factor is 0.02-0.99, and the surface recovery coefficient is 0.1-1. The housing 41 is made of steel or aluminum, and an anti-rust plating layer is disposed on the outer surface of the housing 41.
The structure of the planar member 11 includes an upper chord 111, a lower chord 112 disposed below the upper chord 111 in parallel, a first vertical bar 113 fixedly connected to the upper chord 111 and the lower chord 112 to form a rectangular frame, a second vertical bar 114 having one end fixedly connected to the center of the upper chord 111 and the other end fixedly connected to the center of the lower chord 112, first diagonal bars 115 respectively disposed at two sides of the second vertical bar 114 and having one end fixedly connected to the upper chord 111 and the other end fixedly connected to the lower chord 112, a cross web member 117 having two ends fixedly connected to the first diagonal bars 115, and a plurality of second diagonal bars 116, wherein one end of the second diagonal bars 116 is fixedly connected to the first diagonal bars 115 and the other end fixedly connected to the second vertical bar 114.
The vibration damper 4 can be fixedly mounted on the space rod structure 1 through buckling, screwing, welding, gluing or other modes, and can be mounted on a place with larger vibration on the space rod structure 1 besides a modal point or an energy intersection point. The installed vibration damper 4 has an obvious vibration damping effect in a full frequency band, and particularly has a better effect in high frequency band vibration damping, so that the problem of high frequency standing wave caused by vibration isolation can be effectively solved.
The space rod structure 1 in the present embodiment is a rigid connection structure, and the vibration is transmitted back and forth in the form of waves in the space rod structure 1, and is reduced each time the vibration passes through the vibration damper 4; for specific wavelength, 50% -60% of vibration reduction effect can be achieved after parameters of the vibration reduction damper 4 are adjusted in a targeted mode.
Example two
On the basis of the first embodiment, as shown in fig. 2 to 4, a base 2 is disposed at the bottom of the spatial rod structure 1, and a plurality of vibration isolators 3 are disposed between the spatial rod structure 1 and the base 2.
The rubber vibration isolator is optimized to isolator 3, can constitute the vibration isolation buoyant raft with the combination of space rod structure 1, and when vibration takes place, the vibration damper 4 that is located on space rod structure 1 can be in advance with the vibration energy consumption of buoyant raft partly, reduces the transmission of vibration energy to isolator 3 direction, can improve the high frequency standing wave effect that isolator 3 exists, improves isolator 3's vibration isolation efficiency, and holistic vibration isolation effect is better.
EXAMPLE III
As shown in fig. 5-7, a vibration damping spatial rod structure 1 includes a spatial rod structure 1 and a vibration damping damper 4 fixedly disposed on the spatial rod structure 1, the vibration damping damper 4 includes a housing 41 and a plurality of damping particles 43, a closed cavity 42 is disposed inside the housing 41, the plurality of damping particles 43 are filled in the cavity 42, and the spatial rod structure 1 is a truss structure formed by combining a plurality of planar rod structures 11.
The vibration damper 4 is installed at a modal point or an energy junction point on the spatial rod structure 1. The cavity 42 is internally provided with one or more partition plates 44 for dividing the cavity into a plurality of chambers, and the filling rate of the damping particles 43 in the cavity 42 is 10-100%. The damping particles 43 are made of steel, tungsten-based material or ceramic material, and have a longest diameter of 0.1-12 mm and a density of 1.2g/cm3～18.3g/cm3The surface friction factor is 0.02-0.99, and the surface recovery coefficient is 0.1-1. The housing 41 is made of steel or aluminum, and an anti-rust plating layer is disposed on the outer surface of the housing 41.
The space bar structure 1 is a solar wing. The cross-sectional shape of the housing 41 is T-shaped, and the exterior of the damping particles 43 is covered with a packing layer 45 made of a flexible material.
When the space rod structure 1 is a solar wing, the T-shaped shell 41 enables the vibration damper 4 to be more conveniently installed on the space rod structure 1, and the whole solar wing can be well adapted to the microgravity environment in the space and has a good vibration damping effect.
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 vibration damping space rod member structure is characterized in that: the damping device comprises a space rod piece structure and a damping damper fixedly arranged on the space rod piece structure, wherein the damping damper comprises a shell and a plurality of damping particles, a closed cavity is formed in the shell, the damping particles are filled in the cavity, and the space rod piece structure is a truss structure formed by combining a plurality of plane rod piece structures.
2. A vibration damping space rod structure according to claim 1, wherein: the vibration-damping damper is arranged at a modal point or an energy intersection point on the space rod piece structure.
3. A vibration damping space rod structure according to claim 1, wherein: the inside of the cavity is provided with one or more partition plates for dividing the cavity into a plurality of chambers.
4. A vibration damping space rod structure according to claim 1, wherein: the filling rate of the damping particles in the cavity is 10-100%.
5. A vibration damping space rod structure according to claim 1, wherein: the damping particles are made of steel or tungsten-based materials or ceramic materials, the longest diameter of the damping particles is 0.1-12 mm, and the density of the damping particles is 1.2g/cm3～18.3g/cm3The surface friction factor is 0.02-0.99, and the surface recovery coefficient is 0.1-1.
6. A vibration damping space rod structure according to claim 1, wherein: the shell is made of steel or aluminum, and an antirust electroplated layer is arranged on the outer surface of the shell.
7. A vibration damping space rod structure according to any one of claims 1 to 6, wherein: the planar member structure comprises an upper chord, a lower chord below the upper chord, a first vertical rod and one end fixedly connected with the upper chord and the lower chord to form a rectangular frame, a second vertical rod and a plurality of second inclined rods, wherein the other end fixedly connected with the center of the upper chord is fixedly connected with the center of the lower chord, two sides and one end of the second vertical rod are respectively arranged on two sides of the second vertical rod, one end of the second inclined rod is fixedly connected with the other end of the upper chord and the other end of the lower chord is fixedly connected with a first inclined rod and two end parts of the first inclined rod, the other end of the second inclined rod is fixedly connected with the first inclined rod, and the other end of the second inclined rod is fixedly connected with the second vertical rod.
8. A vibration damping space rod structure according to claim 7, wherein: the bottom of the space rod structure is provided with a base, and a plurality of vibration isolators are arranged between the space rod structure and the base.
9. A vibration damping space rod structure according to any one of claims 1 to 6, wherein: the space rod piece structure is a solar wing.
10. A vibration damping space rod structure according to claim 9, wherein: the cross section of the shell is T-shaped, and a packaging layer made of flexible materials is coated outside the damping particles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121608753.2U CN215110243U (en) | 2021-07-13 | 2021-07-13 | Vibration damping space rod piece structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121608753.2U CN215110243U (en) | 2021-07-13 | 2021-07-13 | Vibration damping space rod piece structure |
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| CN215110243U true CN215110243U (en) | 2021-12-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114607720A (en) * | 2022-03-17 | 2022-06-10 | 江苏科技大学 | Particle damper with built-in barrier network |
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2021
- 2021-07-13 CN CN202121608753.2U patent/CN215110243U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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