CN210618486U - Laser radar passive vibration damper for large-load unmanned aerial vehicle - Google Patents
Laser radar passive vibration damper for large-load unmanned aerial vehicle Download PDFInfo
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- CN210618486U CN210618486U CN201921624325.1U CN201921624325U CN210618486U CN 210618486 U CN210618486 U CN 210618486U CN 201921624325 U CN201921624325 U CN 201921624325U CN 210618486 U CN210618486 U CN 210618486U
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- aerial vehicle
- unmanned aerial
- load
- laser radar
- load mounting
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 9
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Abstract
The utility model relates to a structural vibration control technical field, in particular to passive damping device of laser radar for heavy load unmanned aerial vehicle. Including the unmanned aerial vehicle support, fixed rings, spliced pole, connecting plate, rubber shock absorber, load mounting panel and laser radar, wherein the unmanned aerial vehicle support is connected with the load mounting panel through many spliced poles, and the upper end of each spliced pole is through fixed rings and unmanned aerial vehicle leg joint, and the lower extreme passes through the rubber shock absorber to be connected with the load mounting panel, and laser radar installs on the load mounting panel. The utility model discloses a suspension structure has abundant installation space and dismantles characteristics such as convenient, combines the vibration damper structure, in unmanned aerial vehicle actual work, not only does benefit to the installation of portability loads such as laser radar, improves its working property scope, can guarantee its reliable working property requirement simultaneously.
Description
Technical Field
The utility model relates to a structural vibration control technical field, in particular to passive damping device of laser radar for heavy load unmanned aerial vehicle.
Background
Unmanned aerial vehicle is a have power, steerable, can carry multiple equipment and carry out multiple task, has unmanned vehicles of multiple model structures such as fixed wing, single rotor, many rotors. The unmanned aerial vehicle can realize the applications in many aspects such as south Pole research and investigation, aerial photography, ground disaster assessment, aviation mapping, traffic monitoring, public safety, fire rescue, artificial precipitation, pesticide spraying and the like by carrying various loads. For a large-load unmanned aerial vehicle, the applied engineering field of the large-load unmanned aerial vehicle often enables the unmanned aerial vehicle to bear larger vibration working condition response, and the vibration response seriously influences the working performance of portable load.
The unmanned aerial vehicle realizes the functions and needs a set of complete laser radar support capable of adapting to complex environments, and the laser radar bears complex vibration environments under severe flight conditions. The unmanned aerial vehicle is divided into a low-frequency vibration environment and a high-frequency random vibration environment according to excitation characteristics and a frequency range, the high-frequency random vibration environment is mainly generated by engine jet flow noise and aerodynamic noise excitation and rotation of an unmanned aerial vehicle rotor wing, the frequency range is generally 20-2000Hz, the low-frequency vibration environment is mainly caused by ignition and shutdown of an unmanned aerial vehicle engine and rapid change of a flight environment, and the frequency range is generally 5-100 Hz. Laser radar's service environment mainly receives the interference that comes from unmanned aerial vehicle vibration operating mode, and the vibration source comes from the vibration that unmanned aerial vehicle engine unit produced in the work, the sharp change and various atmospheric phenomena of flight operating mode etc.. If the product is not adaptable to the various airborne flight environments, it may malfunction during the performance of the mission, thereby affecting the reliability of the device.
The design is passive damping device of laser radar for the unmanned aerial vehicle can effectively weaken the excitation operating mode that the vibration in-process transmitted to the portability load, and passive damping technique is simple structure not only, and the damping performance is stable, can realize better damping effect in the unmanned aerial vehicle working process.
SUMMERY OF THE UTILITY MODEL
To the above problem, an object of the utility model is to provide a passive damping device of laser radar for heavy load unmanned aerial vehicle to solve heavy load unmanned aerial vehicle in the course of the work, unmanned aerial vehicle portability load probably bears the problem of great vibration response under the actual vibration operating mode, weakens the vibration response that transmits to unmanned aerial vehicle portability load, can provide great installation space for unmanned aerial vehicle portability load when the vibration damper structure effectively weakens the vibration response.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a passive damping device of laser radar for heavy load unmanned aerial vehicle, includes unmanned aerial vehicle support, fixed rings, spliced pole, connecting plate, rubber shock absorber, load mounting panel and laser radar, wherein the unmanned aerial vehicle support is connected with the load mounting panel through many spliced poles, and the upper end of each spliced pole is through fixed rings and unmanned aerial vehicle leg joint, and the lower extreme passes through the rubber shock absorber to be connected with the load mounting panel, laser radar installs on the load mounting panel.
The lower ends of the connecting columns are connected with a connecting plate, and the rubber shock absorbers penetrate through the connecting plate to be connected with the connecting columns.
The connecting plate is a carbon fiber plate with a frame structure.
The rubber shock absorber is accommodated in a mounting hole formed in the load mounting plate.
The rubber shock absorber comprises a connecting sleeve, a bolt and two T-shaped rubbers, wherein the connecting sleeve is inserted into the mounting hole of the load mounting plate, the two T-shaped rubbers are sleeved on the outer side of the connecting sleeve and symmetrically arranged on two sides of the mounting hole, and the bolt penetrates through the connecting sleeve and the connecting plate to be connected with the connecting column.
Gaskets are arranged between the load mounting plate and the T-shaped rubbers on the two sides and between the T-shaped rubbers and the connecting plate.
A gap is arranged between the two T-shaped rubbers.
The fixed lifting ring comprises an upper lifting ring and a lower lifting ring which are connected with each other at two sides, and the upper lifting ring and the lower lifting ring are of non-semicircular structures, so that a gap is reserved between the upper lifting ring and the lower lifting ring.
The unmanned aerial vehicle support includes two hollow round bars, and every hollow round bar is connected with the load mounting panel through two spliced poles.
The laser radar set up in the front portion of load mounting panel, still be equipped with camera and GPS system on the load mounting panel.
The utility model has the advantages and beneficial effects that:
the utility model discloses with the vibration response that reduces that unmanned aerial vehicle portability load bore as the target, adopt the passive damping device of suspension structure, provide sufficient installation space for whole damping device's installation to damping device passes through the suspension installation form and installs at unmanned aerial vehicle leading position, has improved laser radar's installation space under the prerequisite that does not influence laser radar's performance.
The utility model discloses use fixed rings to pass through bolted connection on the unmanned aerial vehicle support, maintain stable position relation through upper and lower non-semicircular symmetry's structure and unmanned aerial vehicle support. And the connection relation with the carbon fiber plate is realized through the steel connecting column with internal threads at the upper part and the lower part, and a groove is processed in the middle of the connecting column, so that the assembly and the fixation are convenient. The carbon fiber plate is arranged at the lower part of the connecting column, and the gasket and the T-shaped rubber are fixed on the carbon fiber plate through bolts, so that the T-shaped rubber can be connected on the same plane, and the vibration damping mass center and the inertia are ensured to be in a balance position; the combination form of the T-shaped rubber which is symmetrical up and down can effectively improve the unidirectional vibration reduction effect, and meanwhile, the T-shaped structure greatly improves the vibration performance in the horizontal direction.
The utility model discloses a passive vibration damper adopts the suspension structure, has abundant installation space and dismantles characteristics such as convenient, combines the vibration damper structure, and in unmanned aerial vehicle actual work, not only do benefit to the installation of portability loads such as laser radar, improve its working property scope, can guarantee its reliable working property requirement simultaneously.
Drawings
Fig. 1 is an isometric view of the present invention;
FIG. 2 is a schematic structural view of the rubber damper of the present invention;
fig. 3 is a schematic structural view of the fixed hanging ring of the present invention;
FIG. 4 is a schematic structural view of the connecting column of the present invention;
fig. 5 is a graph of a vibration test of the present invention.
In the figure: 1 is the unmanned aerial vehicle support, 2 is fixed rings, 3 is the spliced pole, 4 is the connecting plate, 5 is the rubber shock absorber, 6 is the load mounting panel, 7 is the camera, 8 is the GPS system, 9 is laser radar, 10 is T type rubber, 11 is the gasket, 12 is the adapter sleeve, 13 is the bolt, 14 is last rings, 15 are rings down.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the utility model provides a pair of passive damping device of laser radar for heavy load unmanned aerial vehicle, including unmanned aerial vehicle support 1, fixed rings 2, spliced pole 3, connecting plate 4, rubber shock absorber 5, load mounting panel 6 and laser radar 9, wherein unmanned aerial vehicle support 1 is connected with load mounting panel 6 through many spliced poles 3, and fixed rings 2 and unmanned aerial vehicle support 1 are connected through to the upper end of each spliced pole 3, and the lower extreme passes through rubber shock absorber 5 to be connected with load mounting panel 6, and laser radar 9 installs on load mounting panel 6.
Further, the laser radar 9 is arranged at the front part of the load mounting plate 6, and the camera 7 and the GPS system 8 are also arranged on the load mounting plate 6.
Further, the lower ends of the connecting columns 3 are connected with connecting plates 4, and the rubber dampers 5 penetrate through the connecting plates 4 to be connected with the connecting columns 3. The connecting plate 4 can ensure that the rubber damper 5 is connected on the same plane, and ensure that the damping mass center and the inertia are in a balance position.
The utility model discloses an in the embodiment, be equipped with four spliced poles 3 between unmanned aerial vehicle support 1 and the load mounting panel 6. The connecting plate 4 is a carbon fiber plate of a frame structure. Four spliced poles 3 are connected through carbon fiber plate upper portion, and rubber shock absorber 5 and load mounting panel 6 are connected to the lower part, and the barycenter position of adjustment spliced pole 3 reduces spliced pole 3's processing and assembly error, has adjusted rubber shock absorber 5's damping barycenter position simultaneously, reduces rubber shock absorber 5 processing and assembly error.
As shown in fig. 2, the rubber damper 5 is housed in a mounting hole provided in the load mounting plate 6. The rubber shock absorber 5 comprises a connecting sleeve 12, a bolt 13 and two T-shaped rubbers 10, wherein the connecting sleeve 12 is inserted into the mounting hole of the load mounting plate 6, the two T-shaped rubbers 10 are sleeved outside the connecting sleeve 12 and symmetrically arranged on two sides of the mounting hole, and the bolt 13 penetrates through the connecting sleeve 12 and the connecting plate 4 to be connected with the connecting column 3.
Furthermore, gaskets 11 are arranged between the load mounting plate 6 and the T-shaped rubbers 10 on the two sides and between the T-shaped rubbers 10 and the connecting plate 4.
A gap is formed between the two T-shaped rubbers 10, so that the T-shaped rubbers 10 have a good vibration reduction effect in the horizontal direction, and meanwhile, the vertical symmetrical structure is designed, so that the overall vibration reduction performance is improved. The gasket 11 is designed to be assembled between the load mounting plate 6 and the T-shaped rubber 10, so that the bearing rigidity can be effectively improved, the rubber material is prevented from being crushed, the T-shaped rubber 10 is made of a silicon rubber series, and the gasket 11 and the connecting sleeve 7 are made of an aerospace material 7075 AL.
The up-down symmetrical combination form of the rubber damper 5 can effectively improve the one-way damping effect, and meanwhile, the T-shaped structure of the rubber 10 greatly improves the vibration performance in the horizontal direction.
Fixed rings 2 pass through the bolt and are connected with unmanned aerial vehicle support 1, and fixed rings 2 lower part is connected with spliced pole 3, with whole suspension structure and the reliable connection of unmanned aerial vehicle support 1.
As shown in fig. 3, the fixed suspension ring 2 comprises an upper suspension ring 14 and a lower suspension ring 15, both sides of which are connected with each other through bolts, and the upper suspension ring 14 and the lower suspension ring 15 are of non-semicircular structures, so that a gap is left between the upper suspension ring 14 and the lower suspension ring 15, the fixed suspension ring can be effectively fixed on an unmanned aerial vehicle support, and a stable position relationship is maintained.
Fixed rings 2 are designed as the combination of rings 14 and rings 15 on the Q235 steel system, and all adopt non-semicircular structure, can effectively block on unmanned aerial vehicle support 1 in the assembly, have guaranteed the stable in structure's of post-assembly positional relationship.
Unmanned aerial vehicle support 1 includes two hollow round bars, and the round bar is two hollow Q235 steel round bars, alleviates whole quality, improves connection rigidity, provides abundant space for whole damping device's installation, does not influence laser radar 9's working property simultaneously. The camera 7, the GPS system 8 and the laser radar 9 are assembled on the load mounting plate 6, the laser radar 9 is arranged in front of the load mounting plate 6, the detection visual field is sufficient, the mounting space is sufficient, the GPS system 8 is arranged on the upper portion of the load mounting plate 6, and the camera 7 is arranged on the lower portion of the load mounting plate and can collect sufficient information data.
The connecting column 3 is designed into four Q235 steel cylinders with internal threads at the upper part and the lower part, the upper part of the connecting column 3 is connected with the fixed hanging ring 2, and the lower part is connected with the carbon fiber plate 4, the rubber shock absorber 5 and the load mounting plate 6. A groove is machined in the middle of the connecting column 3 as shown in fig. 4. During installation, the clamp clamps the groove, and the fixed hanging ring 2 is assembled.
As shown in fig. 5, carry out the simulation to heavy load unmanned aerial vehicle vibration operating mode through laboratory test, gather the vibration response time domain signal of laser radar 9 and vibration frock input through acceleration sensor, compare two vibration signal curves, can obtain through this passive damping device can effectively weaken the vibration response who transmits to portable load camera 7, GPS system 8, laser radar 9.
The utility model discloses a fixed rings 2 passes through bolted connection on unmanned aerial vehicle support 1, maintains stable position relation with unmanned aerial vehicle support 1 to realize being connected the relation with the carbon fiber board through spliced pole 3, rely on the damping characteristic of the rubber shock absorber of setting on transmission route, weaken the vibration that transmits to on the load mounting panel 6, the camera 7 of installation on the load mounting panel 6, GPS system 8 and laser radar 9's vibration operating mode obtains controlling.
The utility model discloses applicable in aerospace or the harsh field of vibration environment, vibration damper designs for suspension structure, and this structure provides bigger installation space for the portability load to it is more convenient at portability load installation, when vibration operating mode is abominable in the unmanned aerial vehicle working process, can effectively weaken the vibration excitation that transmits to the portability load through rubber shock absorber in the device, effectively reduce load vibration operating mode on vibration route, can carry out effective protection to the portability load of installing on vibration damper.
The above description is only for the embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, extension, etc. made within the spirit and principle of the present invention are all included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a passive damping device of laser radar for heavy load unmanned aerial vehicle, a serial communication port, including unmanned aerial vehicle support (1), fixed rings (2), spliced pole (3), connecting plate (4), rubber shock absorber (5), load mounting panel (6) and laser radar (9), wherein unmanned aerial vehicle support (1) is connected with load mounting panel (6) through many spliced poles (3), the upper end of each spliced pole (3) is connected with unmanned aerial vehicle support (1) through fixed rings (2), the lower extreme passes through rubber shock absorber (5) and is connected with load mounting panel (6), install on load mounting panel (6) laser radar (9).
2. The passive vibration damper for laser radar of a heavy load unmanned aerial vehicle according to claim 1, wherein the lower ends of a plurality of connecting columns (3) are connected with a connecting plate (4), and the rubber vibration damper (5) passes through the connecting plate (4) and is connected with the connecting columns (3).
3. The lidar passive damping device for a heavy-duty unmanned aerial vehicle of claim 2, wherein the connecting plate (4) is a carbon fiber plate of a frame structure.
4. The lidar passive damping device for a heavy-duty unmanned aerial vehicle of claim 2, wherein the rubber damper (5) is accommodated in a mounting hole provided in the load mounting plate (6).
5. The passive vibration damping device for the lidar used for the heavy-load unmanned aerial vehicle as claimed in claim 4, wherein the rubber vibration damper (5) comprises a connecting sleeve (12), a bolt (13) and two T-shaped rubbers (10), wherein the connecting sleeve (12) is inserted into the mounting hole of the load mounting plate (6), the two T-shaped rubbers (10) are sleeved outside the connecting sleeve (12) and symmetrically arranged at two sides of the mounting hole, and the bolt (13) passes through the connecting sleeve (12) and the connecting plate (4) to be connected with the connecting column (3).
6. The passive vibration damper for laser radar of large-load unmanned aerial vehicle according to claim 5, characterized in that a gasket (11) is arranged between the load mounting plate (6) and the T-shaped rubber (10) at two sides and between the T-shaped rubber (10) and the connecting plate (4).
7. The passive vibration damper for lidar for heavy-duty unmanned aerial vehicle of claim 5, wherein a gap is provided between said two T-shaped rubbers (10).
8. The passive vibration damping device for the laser radar of the heavy-load unmanned aerial vehicle as claimed in claim 1, wherein the fixed lifting ring (2) comprises an upper lifting ring (14) and a lower lifting ring (15) which are connected with each other at two sides, and the upper lifting ring (14) and the lower lifting ring (15) are of non-semicircular structures, so that a gap is reserved between the upper lifting ring (14) and the lower lifting ring (15).
9. The passive vibration damper of lidar for heavy-load unmanned aerial vehicle of claim 1, wherein the unmanned aerial vehicle bracket (1) comprises two hollow round bars, each hollow round bar is connected with the load mounting plate (6) through two connecting columns (3).
10. The passive vibration damper of lidar for heavy-duty unmanned aerial vehicle of claim 1, wherein the lidar (9) is disposed at the front of the load mounting plate (6), and the load mounting plate (6) is further provided with a camera (7) and a GPS system (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921624325.1U CN210618486U (en) | 2019-09-27 | 2019-09-27 | Laser radar passive vibration damper for large-load unmanned aerial vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921624325.1U CN210618486U (en) | 2019-09-27 | 2019-09-27 | Laser radar passive vibration damper for large-load unmanned aerial vehicle |
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| CN210618486U true CN210618486U (en) | 2020-05-26 |
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| CN201921624325.1U Expired - Fee Related CN210618486U (en) | 2019-09-27 | 2019-09-27 | Laser radar passive vibration damper for large-load unmanned aerial vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110683063A (en) * | 2019-09-27 | 2020-01-14 | 中国科学院沈阳自动化研究所 | Laser radar passive vibration damping device for large-load unmanned aerial vehicle |
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2019
- 2019-09-27 CN CN201921624325.1U patent/CN210618486U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110683063A (en) * | 2019-09-27 | 2020-01-14 | 中国科学院沈阳自动化研究所 | Laser radar passive vibration damping device for large-load unmanned aerial vehicle |
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Granted publication date: 20200526 |