CN114524084A - Engineering surveying and mapping unmanned aerial vehicle - Google Patents
Engineering surveying and mapping unmanned aerial vehicle Download PDFInfo
- Publication number
- CN114524084A CN114524084A CN202210270308.2A CN202210270308A CN114524084A CN 114524084 A CN114524084 A CN 114524084A CN 202210270308 A CN202210270308 A CN 202210270308A CN 114524084 A CN114524084 A CN 114524084A
- Authority
- CN
- China
- Prior art keywords
- aerial vehicle
- unmanned aerial
- leg
- vehicle body
- spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000013507 mapping Methods 0.000 title claims abstract description 18
- 230000001681 protective effect Effects 0.000 claims description 8
- 238000013016 damping Methods 0.000 claims description 3
- 230000003139 buffering effect Effects 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 4
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C25/00—Alighting gear
- B64C25/32—Alighting gear characterised by elements which contact the ground or similar surface
- B64C25/34—Alighting gear characterised by elements which contact the ground or similar surface wheeled type, e.g. multi-wheeled bogies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C25/00—Alighting gear
- B64C25/32—Alighting gear characterised by elements which contact the ground or similar surface
- B64C25/58—Arrangements or adaptations of shock-absorbers or springs
- B64C25/62—Spring shock-absorbers; Springs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D45/00—Aircraft indicators or protectors not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D47/00—Equipment not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
- B64U10/00—Type of UAV
- B64U10/10—Rotorcrafts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/40—Weight reduction
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Remote Sensing (AREA)
- Vibration Dampers (AREA)
Abstract
The invention relates to the field of homeland engineering surveying and mapping, in particular to an unmanned aerial vehicle for engineering surveying and mapping. Including the unmanned aerial vehicle body, be provided with the screw on the unmanned aerial vehicle body, the surveying instrument is installed through damper in the bottom middle part of unmanned aerial vehicle body, the bottom of unmanned aerial vehicle body is located be provided with the outside support main leg of slope all around of surveying instrument, the bottom of supporting the main leg articulates there is first landing leg, the bottom of first landing leg is rotated and is connected with the buffer wheel, lie in the articulated portion top fixedly connected with second landing leg of support main leg and first landing leg on the support main leg, be connected with first spring between the lateral wall of second landing leg and the lateral wall of first landing leg, there is the cushion foot bottom of second landing leg through second spring mounting, the bottom of cushion foot is higher than the bottommost of buffer wheel. According to the invention, by arranging the double buffering structure consisting of the first supporting leg and the second supporting leg, an effective and reliable buffering protection effect can be provided for the unmanned aerial vehicle body and the carried surveying instrument thereof.
Description
Technical Field
The invention relates to the field of homeland engineering surveying and mapping, in particular to an unmanned aerial vehicle for engineering surveying and mapping.
Background
In the homeland surveying and mapping operation, the unmanned aerial vehicle is often used at surveying and mapping points which are difficult to reach by operators with complicated terrains, and the unmanned aerial vehicle surveying and mapping has the advantages of simple operation, small influence on the terrains, high working efficiency and the like, so that the unmanned aerial vehicle surveying and mapping method is widely applied. But the unmanned aerial vehicle that is used for engineering survey and drawing that has now mostly lacks effectual buffering shock-absorbing structure, when unmanned aerial vehicle normally descends and the accident drops, all can cause great impact to the surveying instrument that carries on unmanned aerial vehicle body and the unmanned aerial vehicle to bring the damage for the surveying instrument, influence the normal clear of surveying work.
Disclosure of Invention
Based on the problems in the prior art, the invention provides an engineering surveying and mapping unmanned aerial vehicle, and specifically discloses the following technical scheme:
the utility model provides an engineering survey and drawing unmanned aerial vehicle, includes the unmanned aerial vehicle body, be provided with the screw on the unmanned aerial vehicle body, the surveying instrument is installed through damper in the bottom middle part of unmanned aerial vehicle body, the bottom of unmanned aerial vehicle body is located surveying instrument and is provided with the outside support main leg of slope all around, the bottom of supporting the main leg articulates there is first landing leg, the bottom of first landing leg is rotated and is connected with the buffering wheel, lie in the articulated portion top fixedly connected with second landing leg of support main leg and first landing leg on the support main leg, be connected with first spring between the lateral wall of second landing leg and the lateral wall of first landing leg, the bottom of second landing leg has the cushion foot through the second spring mounting, the bottommost of cushion foot is higher than the bottommost of buffering wheel.
Further, the mounting groove has been seted up to the inside bottom of second landing leg, the mounting groove internal fixation is provided with the second spring, the top of cushion foot is provided with the push pedal through the connecting rod, the push pedal slides and sets up in the mounting groove and be located the second spring under.
Further, the bottom of mounting groove is provided with the card platform, the center of card platform is provided with the through-hole that supplies the connecting rod to pass, the diameter of through-hole is less than the diameter of push pedal.
Further, damper includes that the symmetry sets up two fixed plates in unmanned aerial vehicle body bottom both sides, two the spout has all been seted up to one side that the fixed plate is close to each other, the equal vertical guide arm that is provided with in inside both sides of spout, slidable mounting has the slider on the guide arm, the part that lies in the slider lower extreme on the guide arm all overlaps and is equipped with the third spring, and the slider on four guide arms is connected with middle mounting platform through the horizontal pole respectively in two spouts, the surveying instrument is installed to mounting platform's bottom.
Further, be provided with the cushion socket between the top of mounting platform and the bottom of unmanned aerial vehicle body, the cushion socket includes the upper junction plate with unmanned aerial vehicle body bottom mounting and the lower connecting plate of fixing with the mounting platform top, be connected through two spring damper between upper junction plate and the lower connecting plate, two spring damper intervals set up in the both ends of upper junction plate and lower connecting plate, still are provided with horizontal spring damper between two spring damper, and the both ends of horizontal spring damper are articulated through the both ends of hinge bar and upper junction plate and the both ends of lower connecting plate respectively.
Furthermore, the outer part of the propeller is covered with a protective shell, and the protective shell is of a net structure.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the bottom end of the unmanned aerial vehicle body is provided with the main supporting leg, the main supporting leg is respectively connected with the first supporting leg and the second supporting leg, the first spring is connected between the two supporting legs, the bottom end of the first supporting leg is connected with the buffering wheel, the bottom end of the second supporting leg is connected with the buffering pad foot through the second spring, when the unmanned aerial vehicle lands, the buffering wheel firstly touches the ground, the landing impact force is decomposed by the roller, the first supporting leg and the first spring to offset a part, and the first supporting leg can greatly rotate when the impact force is not fully offset, so that the buffering pad foot contacts the ground, and the rest is further offset.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is an enlarged view of a point a in fig. 1.
Fig. 3 is an enlarged view at B in fig. 1.
Fig. 4 is a schematic structural view of the mounting platform.
The unmanned aerial vehicle comprises an unmanned aerial vehicle body 1, a propeller 2, a surveying instrument 3, a main supporting leg 4, a first supporting leg 5, a buffer wheel 6, a second supporting leg 7, a first spring 8, a second spring 9, a buffer foot 10, a connecting rod 11, a push plate 12, a clamping table 13, a fixing plate 14, a guide rod 15, a sliding block 16, a third spring 17, a mounting platform 18, an upper connecting plate 19, a lower connecting plate 20, a spring shock absorber 21, a hinge rod 22 and a protective shell 23.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, an unmanned aerial vehicle for engineering surveying and mapping comprises an unmanned aerial vehicle body 1, wherein a propeller 2 is arranged on the unmanned aerial vehicle body 1, the middle part of the bottom end of the unmanned aerial vehicle body 1 is provided with a surveying instrument 3 through a damping mechanism, the bottom end of the unmanned aerial vehicle body 1 is provided with a main support leg 4 which is inclined outwards and is positioned around the surveying instrument 3, the bottom end of the supporting main leg 4 is hinged with a first supporting leg 5, the bottom end of the first supporting leg 5 is rotatably connected with a buffer wheel 6, a second supporting leg 7 is fixedly connected on the supporting main leg 4 above the hinge part of the supporting main leg 4 and the first supporting leg 5, a first spring 8 is connected between the side wall of the second supporting leg 7 and the side wall of the first supporting leg 5, a buffering foot pad 10 is installed at the bottom end of the second supporting leg 7 through a second spring 9, and the bottommost end of the buffering foot pad 10 is higher than the bottommost end of the buffering wheel 6.
When unmanned aerial vehicle descends, buffer wheel 6 contacts to earth earlier, the impact force that falls to the ground is decomposed partly to the horizontal direction by buffer wheel 6, first landing leg 5 rotates and then stretches first spring 8 around the pin joint, finally offset this part of impact force by first spring 8, can cause the rotation by a wide margin of first landing leg 5 when first spring 8 is not enough to offset whole impact force, make cushion foot 10 contact ground, thereby utilize second spring 9 further to offset remaining impact force, in order to realize the effect of dual buffering.
In this embodiment, the mounting groove has been seted up to the bottom of second landing leg 7 is inside, the mounting groove internal fixation is provided with second spring 9, the top of cushion foot 10 is provided with push pedal 12 through connecting rod 11, push pedal 12 slides and sets up in the mounting groove and is located second spring 9 under.
When the cushion foot 10 receives the impact, can upwards promote push pedal 12 through connecting rod 11, push pedal 12 extrudees second spring 9 to rely on second spring 9 to offset the impact force, realize the effect of buffering.
In this embodiment, the bottom of mounting groove is provided with card platform 13, the center of card platform 13 is provided with the through-hole that supplies connecting rod 11 to pass, the diameter of through-hole is less than the diameter of push pedal 12. The arrangement of the clamping table 13 can prevent the push plate 12 from being separated from the mounting groove.
In this embodiment, damper includes that the symmetry sets up two fixed plates 14 in 1 bottom both sides of unmanned aerial vehicle body, two the spout has all been seted up to one side that fixed plate 14 is close to each other, the equal vertical guide arm 15 that is provided with in inside both sides of spout, the cover is equipped with slider 16 on the guide arm 15, and slider 16 can follow guide arm 15 and slide from top to bottom, the part that lies in the slider 16 lower extreme on the guide arm 15 all overlaps and is equipped with third spring 17, and slider 16 on four guide arms 15 is connected with middle mounting platform 18 through the horizontal pole respectively in two spouts, surveying instrument 3 is installed to mounting platform 18's bottom.
In this embodiment, be provided with the cushion socket between the top of mounting platform 18 and the bottom of unmanned aerial vehicle body 1, the cushion socket includes upper junction plate 19 with 1 bottom mounting of unmanned aerial vehicle body and lower connecting plate 20 with the mounting platform 18 top mounting, be connected through two spring damper 21 between upper junction plate 19 and the lower connecting plate 20, two spring damper 21 intervals set up in the both ends of upper junction plate 19 and lower connecting plate 20, still be provided with horizontal spring damper between two spring damper 21, the both ends of horizontal spring damper are articulated through the both ends of hinge bar 22 with upper junction plate 19 and the both ends of lower connecting plate 20 respectively.
Buffer seat sets up between mounting platform 18 and the unmanned aerial vehicle body 1, can further weaken unmanned aerial vehicle body 1 to mounting platform 18 direct impact force, receive the impact and when taking place relative displacement when upper junction plate 19 and lower junction plate 20, spring damper 21 between the two can produce corresponding deformation, thereby offset partial energy, and when relative displacement volume between upper and lower junction plate 20 further enlarges, connect in the corresponding change of angle between two connecting rods 11 with the same side of horizontal spring damper, thereby promote horizontal spring damper 21 and take place deformation, in order to play further damping effect.
In this embodiment, the outer portion of the propeller 2 is covered with a protective casing 23, and the protective casing 23 is a mesh structure. The arrangement of the net-shaped protective shell can provide reliable protection for the propeller 2 on the premise of not influencing the normal work of the propeller 2.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the technical scope of the present invention.
Claims (6)
1. The utility model provides an engineering survey and drawing unmanned aerial vehicle, characterized in that, includes the unmanned aerial vehicle body, be provided with the screw on the unmanned aerial vehicle body, the surveying instrument is installed through damper in the bottom middle part of unmanned aerial vehicle body, the bottom of unmanned aerial vehicle body is located the outside support main leg that inclines that is provided with all around of surveying instrument, the bottom of support main leg articulates there is first landing leg, the bottom of first landing leg is rotated and is connected with the buffer wheel, lie in the articulated portion top fixedly connected with second landing leg of support main leg and first landing leg on the support main leg, be connected with first spring between the lateral wall of second landing leg and the lateral wall of first landing leg, there is the cushion foot bottom of second landing leg through the second spring mounting, the bottommost of cushion foot is higher than the bottommost of buffer wheel.
2. The unmanned aerial vehicle for engineering surveying and mapping of claim 1, wherein a mounting groove is formed in the bottom end of the second support leg, a second spring is fixedly arranged in the mounting groove, a push plate is arranged at the top end of the cushion foot through a connecting rod, and the push plate is slidably arranged in the mounting groove and located at the lower end of the second spring.
3. The unmanned aerial vehicle for engineering surveying and mapping of claim 2, wherein a clamping table is arranged at the bottom end of the mounting groove, a through hole for a connecting rod to pass through is arranged at the center of the clamping table, and the diameter of the through hole is smaller than that of the push plate.
4. The unmanned aerial vehicle for engineering surveying and mapping of claim 1, wherein the damping mechanism comprises two fixing plates symmetrically arranged on two sides of the bottom end of the unmanned aerial vehicle body, two sliding grooves are formed in one sides, close to each other, of the fixing plates, guide rods are vertically arranged on two sides of the sliding grooves, sliding blocks are arranged on the guide rods in a sliding mode, third springs are sleeved on portions, located at the lower ends of the sliding blocks, of the guide rods, the sliding blocks on the four guide rods in the two sliding grooves are connected with the middle mounting platform through cross rods respectively, and the surveying and mapping instrument is installed at the bottom end of the mounting platform.
5. The unmanned aerial vehicle for engineering surveying and mapping of claim 4, wherein a buffer seat is arranged between the top end of the mounting platform and the bottom end of the unmanned aerial vehicle body, the buffer seat comprises an upper connecting plate fixed to the bottom end of the unmanned aerial vehicle body and a lower connecting plate fixed to the top end of the mounting platform, the upper connecting plate and the lower connecting plate are connected through two spring dampers, the two spring dampers are arranged at two ends of the upper connecting plate and the lower connecting plate at intervals, a transverse spring damper is further arranged between the two spring dampers, and two ends of the transverse spring damper are respectively hinged to two ends of the upper connecting plate and two ends of the lower connecting plate through hinge rods.
6. The unmanned aerial vehicle for engineering surveying and mapping of claim 1, wherein the outer cover of the propeller is provided with a protective shell, and the protective shell is of a net structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210270308.2A CN114524084A (en) | 2022-03-18 | 2022-03-18 | Engineering surveying and mapping unmanned aerial vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210270308.2A CN114524084A (en) | 2022-03-18 | 2022-03-18 | Engineering surveying and mapping unmanned aerial vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114524084A true CN114524084A (en) | 2022-05-24 |
Family
ID=81626461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210270308.2A Pending CN114524084A (en) | 2022-03-18 | 2022-03-18 | Engineering surveying and mapping unmanned aerial vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114524084A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799756A (en) * | 2018-04-10 | 2018-11-13 | 湖州南浔优恒工程咨询有限公司 | A kind of dismountable engineering mapping instrument |
| CN210175120U (en) * | 2019-06-05 | 2020-03-24 | 自然资源部第二地形测量队(陕西省第三测绘工程院) | Be used for surveying and mapping unmanned aerial vehicle that takes photo by plane |
| CN211844889U (en) * | 2020-02-23 | 2020-11-03 | 刘成锐 | Stable surveying and mapping unmanned aerial vehicle rises and falls |
| CN112339998A (en) * | 2020-11-13 | 2021-02-09 | 刘占利 | Surveying and mapping device for engineering based on unmanned aerial vehicle |
| CN112373681A (en) * | 2020-11-20 | 2021-02-19 | 河南城建学院 | Damping device for aerial remote sensing surveying and mapping unmanned aerial vehicle |
| CN213200111U (en) * | 2020-10-26 | 2021-05-14 | 江西复徕航空科技有限公司 | Unmanned aerial vehicle is used in convenient type survey and drawing |
| CN214029135U (en) * | 2020-11-03 | 2021-08-24 | 重庆新阳地理信息有限公司 | Indoor information laser mapping system of unmanned aerial vehicle |
| CN214608048U (en) * | 2020-11-06 | 2021-11-05 | 三峡大学 | Laser radar mapping device on multi-rotor unmanned aerial vehicle |
| CN214729632U (en) * | 2021-05-21 | 2021-11-16 | 于澎 | Unmanned aerial vehicle is used in topographic survey and drawing |
| CN215922537U (en) * | 2021-10-11 | 2022-03-01 | 兰州理工大学 | Survey and drawing unmanned aerial vehicle of taking shock attenuation undercarriage for survey and drawing geographic information |
| CN215972104U (en) * | 2021-10-18 | 2022-03-08 | 杨春雨 | Survey and drawing unmanned aerial vehicle shock attenuation undercarriage |
-
2022
- 2022-03-18 CN CN202210270308.2A patent/CN114524084A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799756A (en) * | 2018-04-10 | 2018-11-13 | 湖州南浔优恒工程咨询有限公司 | A kind of dismountable engineering mapping instrument |
| CN210175120U (en) * | 2019-06-05 | 2020-03-24 | 自然资源部第二地形测量队(陕西省第三测绘工程院) | Be used for surveying and mapping unmanned aerial vehicle that takes photo by plane |
| CN211844889U (en) * | 2020-02-23 | 2020-11-03 | 刘成锐 | Stable surveying and mapping unmanned aerial vehicle rises and falls |
| CN213200111U (en) * | 2020-10-26 | 2021-05-14 | 江西复徕航空科技有限公司 | Unmanned aerial vehicle is used in convenient type survey and drawing |
| CN214029135U (en) * | 2020-11-03 | 2021-08-24 | 重庆新阳地理信息有限公司 | Indoor information laser mapping system of unmanned aerial vehicle |
| CN214608048U (en) * | 2020-11-06 | 2021-11-05 | 三峡大学 | Laser radar mapping device on multi-rotor unmanned aerial vehicle |
| CN112339998A (en) * | 2020-11-13 | 2021-02-09 | 刘占利 | Surveying and mapping device for engineering based on unmanned aerial vehicle |
| CN112373681A (en) * | 2020-11-20 | 2021-02-19 | 河南城建学院 | Damping device for aerial remote sensing surveying and mapping unmanned aerial vehicle |
| CN214729632U (en) * | 2021-05-21 | 2021-11-16 | 于澎 | Unmanned aerial vehicle is used in topographic survey and drawing |
| CN215922537U (en) * | 2021-10-11 | 2022-03-01 | 兰州理工大学 | Survey and drawing unmanned aerial vehicle of taking shock attenuation undercarriage for survey and drawing geographic information |
| CN215972104U (en) * | 2021-10-18 | 2022-03-08 | 杨春雨 | Survey and drawing unmanned aerial vehicle shock attenuation undercarriage |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111305645B (en) | Based on road and bridge construction is with buffering formula anticollision warning guardrail | |
| CN210561685U (en) | Shock attenuation bridge structures | |
| CN215441422U (en) | Damping support for bridge design | |
| CN109281532B (en) | Antidetonation communication tower | |
| CN114524084A (en) | Engineering surveying and mapping unmanned aerial vehicle | |
| CN213921474U (en) | Survey and drawing unmanned aerial vehicle shock attenuation undercarriage for survey and drawing geographic information | |
| CN210561692U (en) | Bridge anti-seismic support | |
| CN107444043A (en) | Electric automobile back suspension device | |
| CN208329246U (en) | A kind of assembled arthitecutral structure damping device | |
| CN215106215U (en) | Spherical damping support suitable for large-span steel construction | |
| CN207554685U (en) | A kind of Hydrologic information collection instrument | |
| CN206599728U (en) | A kind of bridge vibration absorber | |
| CN213734816U (en) | Rotary GPS vehicle-mounted navigation device | |
| CN211844826U (en) | Marine shock-absorbing base | |
| CN207106097U (en) | Electric automobile rear suspension assembly | |
| CN206529687U (en) | A kind of highway bridge shock-absorbing bearing | |
| CN110609594A (en) | Computer hard disk shock mounting | |
| CN220184072U (en) | High-efficient absorbing house construction pile foundation structure | |
| CN215366781U (en) | Anti-seismic structure for highway bridge | |
| CN220813950U (en) | Gravity type anti-seismic retaining wall | |
| CN214497161U (en) | Road and bridge damping support | |
| CN214689145U (en) | Child safety seat side protection device | |
| CN220924397U (en) | Mountain bike with four-bar linkage and rear shock absorbing function | |
| CN218949543U (en) | Unmanned aerial vehicle strutting arrangement | |
| CN218617164U (en) | Mechanical support frame of topographic survey and drawing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |