CN110775257B - Lightweight unmanned aerial vehicle foot rest winding and unwinding devices - Google Patents
Lightweight unmanned aerial vehicle foot rest winding and unwinding devices Download PDFInfo
- Publication number
- CN110775257B CN110775257B CN201911068145.4A CN201911068145A CN110775257B CN 110775257 B CN110775257 B CN 110775257B CN 201911068145 A CN201911068145 A CN 201911068145A CN 110775257 B CN110775257 B CN 110775257B
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- aerial vehicle
- unmanned aerial
- buffering
- telescopic
- frame
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- 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
- B64C—AEROPLANES; HELICOPTERS
- B64C25/00—Alighting gear
- B64C25/02—Undercarriages
- B64C25/08—Undercarriages non-fixed, e.g. jettisonable
- B64C25/10—Undercarriages non-fixed, e.g. jettisonable retractable, foldable, or the like
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention relates to the technical field of unmanned aerial vehicle foot stand retraction and extension, and discloses a light unmanned aerial vehicle foot stand retraction and extension device. The damping device can well realize damping for landing of the unmanned aerial vehicle, and even if the unmanned aerial vehicle bears heavy load, the damping device absorbs vibration by using the torsion spring and converts the telescopic buffering force into the force of the torsion spring by using the telescopic supporting buffering assembly, so that the oscillation performance is effectively reduced, and the stability and the stationarity of landing are improved.
Description
Technical Field
The invention relates to the technical field of unmanned aerial vehicle foot stand retraction, in particular to a light unmanned aerial vehicle foot stand retraction device.
Background
At present, along with unmanned aerial vehicle's continuous development, unmanned aerial vehicle's application is more and more, and to unmanned aerial vehicle, when unmanned aerial vehicle falls to the ground, thereby it damages to cause unmanned aerial vehicle's internal component to receive the impact easily to make unmanned aerial vehicle if the falling speed is very fast, thereby cause the loss, and, to unmanned aerial vehicle, if the position of descending is uneven or unmanned aerial vehicle atress is inhomogeneous, it is when descending, especially heavy-duty unmanned aerial vehicle, the foot rest is unstable easily appears, extend the condition that appears turning on one's side, and in case turn on one's side, then can cause unmanned aerial vehicle's wing to appear warping or damaging, lead to subsequent take off, the unbalance of descending, influence the.
Therefore, the invention provides a light unmanned aerial vehicle foot stool folding and unfolding device, which aims to solve the problems in the background technology.
Disclosure of Invention
The invention aims to provide a light unmanned aerial vehicle foot stool folding and unfolding device to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a light unmanned aerial vehicle foot stool folding and unfolding device comprises a connecting seat, a folding and unfolding driving mechanism and a buffering support leg assembly, wherein the upper end of the buffering support leg assembly is hinged to the connecting seat, the folding and unfolding driving mechanism for driving the buffering support leg assembly to unfold and retract is further arranged on the connecting seat, and the top of the connecting seat is fixed to the bottom of an unmanned aerial vehicle main body; the unmanned aerial vehicle landing device is characterized in that the buffering support leg assembly can be contracted and can at least absorb the buffering force between the unmanned aerial vehicle and the ground when the unmanned aerial vehicle lands; and is
The buffering foot rest assembly comprises a connecting buffering frame, a telescopic supporting buffering assembly and a balance bottom frame, wherein the top of the connecting buffering frame is connected to the connecting seat, the bottom of the connecting buffering frame is connected with the telescopic supporting buffering assembly, the lower part of the telescopic supporting buffering assembly is connected to the balance bottom frame, and the balance bottom frame is also rigidly connected to a retraction rotation center of the retraction driving mechanism;
the contained angle is the setting that can finely tune between the central axis of flexible support buffering subassembly and the vertical line to when making unmanned aerial vehicle descend the buffering, flexible support buffering subassembly can incline a little in the vertical direction, and during the slope of a little, the inboard direction slope of the upper end orientation unmanned aerial vehicle of flexible support buffering subassembly.
Further, preferably, the inclination range of an included angle between the central axis of the telescopic supporting and buffering assembly and a vertical line is within 5 degrees.
Further, as preferred, connect the buffering frame and be three elastic rod frame structures, just the upper end cross section of three elastic rod frame structures is greater than its lower extreme cross section, the upper end of connecting the buffering frame is connected to articulated pivot both ends, the rotatable cover of articulated pivot is established in the connecting hole of connecting seat.
Further, as a preferred option, a knob or a rotary cylinder is connected to an end of the hinge shaft, so that the buffer stand assembly is stored and released by using the knob or the rotary cylinder.
Further, as preferred, flexible support buffering subassembly includes connecting sleeve seat, sliding sleeve, spring, telescopic strut and stabilizer blade, wherein, the upper end of connecting sleeve seat is articulated to be connected the buffering frame bottom side, the fixed downwardly extending that is provided with on the connecting sleeve seat the sliding sleeve, slidable is provided with in the sliding sleeve telescopic strut, telescopic strut's bottom is passed balanced chassis is connected to the stabilizer blade, telescopic strut's upper portion is fixed and is provided with spacing shoulder, spacing shoulder with be provided with between the sliding sleeve bottom the spring.
Further, as preferred, be provided with on the balanced chassis and pass the hole, the top inboard that passes the hole is provided with spherical bearing, the fixed direction sliding sleeve that is provided with in inner circle of spherical bearing, the scalable gliding cover of telescopic prop is in on the spherical bearing, so that telescopic prop can slide from top to bottom and can adjust a little in certain inclination.
Preferably, a buffering and vibration absorbing mechanism is arranged in the balance underframe and is in transmission connection with the telescopic support.
Preferably, the outer wall of the telescopic strut is spirally provided with a spiral guide groove, the buffering and vibration absorbing mechanism at least comprises a rotary vibration absorbing wheel, the inner wall of the rotary vibration absorbing wheel is provided with a convex column which extends into the spiral guide groove and is matched with the spiral guide groove, and when the telescopic strut moves up and down, the convex column can enable the rotary vibration absorbing wheel to rotate.
Further, as preferred, be provided with in the balanced chassis and prevent axial displacement frame, the inboard of preventing axial displacement frame is fixed to be provided with prevents changeing the post, the last anti-rotating groove of offering along axial extension of telescopic prop, prevent changeing the post with anti-rotating groove sliding fit can prevent telescopic prop rotates.
Preferably, the buffering and vibration absorbing mechanism further comprises a torsion spring disc and a transmission gear rod, wherein the upper end of the rotary vibration absorbing wheel is rotatably connected with the lower end face of the axial movement preventing frame through a thin-wall bearing so as to allow the rotary vibration absorbing wheel to rotate, the lower end face of the rotary vibration absorbing wheel is provided with teeth which are in transmission engagement with the transmission gear rod, and the end part of the transmission gear rod is provided with the torsion spring disc arranged on the balance chassis.
Compared with the prior art, the invention has the beneficial effects that:
1. the buffering support leg assembly can be telescopic and can at least absorb the buffering force between the unmanned aerial vehicle and the ground when the unmanned aerial vehicle lands, the main body of the unmanned aerial vehicle can be well protected, meanwhile, the telescopic supporting buffering assembly can slightly incline in the vertical direction, and when the telescopic supporting buffering assembly slightly inclines, the upper end of the telescopic supporting buffering assembly inclines towards the inner side direction of the unmanned aerial vehicle, so that the gravity center of the unmanned aerial vehicle is effectively positioned at the inner side, the problem of side turning of the unmanned aerial vehicle is prevented, and the stability and the reliability of landing of the unmanned aerial vehicle are ensured.
2. The damping device can well realize damping for landing of the unmanned aerial vehicle, and even if the unmanned aerial vehicle bears heavy load, the damping device absorbs vibration by using the torsion spring and converts the telescopic buffering force into the force of the torsion spring by using the telescopic supporting buffering assembly, so that the oscillation performance is effectively reduced, and the stability and the stationarity of landing are improved.
Drawings
Fig. 1 is a schematic view of an installation and arrangement structure of a light unmanned aerial vehicle foot stool folding and unfolding device;
FIG. 2 is a schematic view of the overall structure of a light unmanned aerial vehicle foot stool folding and unfolding device;
fig. 3 is an enlarged structure schematic diagram of the inside of a balance chassis in a light unmanned aerial vehicle foot stool folding and unfolding device.
Detailed Description
Referring to fig. 1 to 3, in the embodiment of the invention, a light unmanned aerial vehicle foot stool retracting device comprises a connecting seat 2, a retracting and releasing driving mechanism and a buffering support leg assembly 7, wherein the upper end of the buffering support leg assembly 7 is hinged to the connecting seat 2, the retracting and releasing driving mechanism for driving the buffering support leg assembly to expand and retract is further arranged on the connecting seat 2, and the top of the connecting seat is fixed to the bottom of an unmanned aerial vehicle main body 1; the unmanned aerial vehicle landing buffering device is characterized in that the buffering foot rest component 7 can be contracted and can at least absorb the buffering force between the unmanned aerial vehicle and the ground when the unmanned aerial vehicle lands; and is
The buffering foot rest assembly 7 comprises a connecting buffering frame 5, a telescopic supporting buffering assembly and a balance underframe 6, wherein the top of the connecting buffering frame 5 is connected to the connecting seat, the bottom of the connecting buffering frame is connected with the telescopic supporting buffering assembly, the lower part of the telescopic supporting buffering assembly is connected to the balance underframe 6, and the balance underframe 6 is also rigidly connected to a retraction rotation center of the retraction driving mechanism;
the contained angle is the setting that can finely tune between the central axis of flexible support buffering subassembly and the vertical line to when making unmanned aerial vehicle descend the buffering, flexible support buffering subassembly can incline a little in the vertical direction, and during the slope of a little, the inboard direction slope of the upper end orientation unmanned aerial vehicle of flexible support buffering subassembly.
In this embodiment, the inclination range of the included angle between the central axis of the telescopic supporting buffer assembly and the vertical line is within 5 °.
As a preferred embodiment, the connection buffer frame 5 is a structure with three elastic rod frames, the cross section of the upper end of each elastic rod frame structure is larger than that of the lower end of each elastic rod frame structure, the upper end of the connection buffer frame 5 is connected to two ends of the hinge shaft 4, and the hinge shaft 4 is rotatably sleeved in the connecting hole of the connecting seat 2.
The end part of the hinged rotating shaft is connected with a knob 3 or a rotary cylinder, so that the buffer foot rest assembly 7 is retracted and placed by using the knob or the rotary cylinder.
In the invention, the telescopic supporting buffer assembly comprises a connecting sleeve seat 9, a sliding sleeve 10, a spring 11, a telescopic strut 12 and a support leg 8, wherein the upper end of the connecting sleeve seat 9 is hinged to the bottom side of the connecting buffer frame 5, the connecting sleeve seat is fixedly provided with the sliding sleeve 10 which extends downwards, the telescopic strut 12 is slidably arranged in the sliding sleeve, the bottom of the telescopic strut penetrates through the balance chassis 6 to be connected to the support leg, the upper part of the telescopic strut is fixedly provided with a limiting shoulder 22, and the spring 11 is arranged between the limiting shoulder and the bottom of the sliding sleeve.
In addition, be provided with on the balanced chassis 6 and pass the hole, the top inboard that passes the hole is provided with spherical bearing 13, the fixed direction sliding sleeve that is provided with in inner circle of spherical bearing, telescopic strut 12 telescopic sliding's cover is in on the spherical bearing, so that telescopic strut 12 can slide from top to bottom and can adjust a little in certain inclination.
The balance chassis 6 is internally provided with a buffering and vibration absorbing mechanism which is in transmission connection with the telescopic support 12. The outer wall of the telescopic strut 12 is spirally provided with a spiral guide groove 14, the buffering and vibration absorbing mechanism at least comprises a rotary vibration absorbing wheel 17, the inner wall of the rotary vibration absorbing wheel is provided with a convex column which extends into the spiral guide groove 14 and is matched with the spiral guide groove, and when the telescopic strut 12 moves up and down, the convex column can enable the rotary vibration absorbing wheel to rotate.
Be provided with in the balanced chassis and prevent axial displacement frame 15, the inboard of preventing axial displacement frame 15 is fixed to be provided with prevents changeing the post, set up on the telescopic prop 12 along the axially extended anti-rotating groove, prevent changeing the post with anti-rotating groove sliding fit can prevent telescopic prop 12 rotates.
The buffering and vibration absorbing mechanism further comprises a torsion spring disc 19 and a transmission gear rod 18, wherein the upper end of the rotary vibration absorbing wheel 17 is rotatably connected with the lower end face of the anti-axial moving frame 15 through a thin-wall bearing 20 so as to allow the rotary vibration absorbing wheel 17 to rotate, the lower end face of the rotary vibration absorbing wheel 17 is provided with teeth in transmission engagement with the transmission gear rod 18, and the end part of the transmission gear rod 18 is provided with the torsion spring disc 19 installed on the balance chassis.
The buffering support leg assembly can be telescopic and can at least absorb the buffering force between the unmanned aerial vehicle and the ground when the unmanned aerial vehicle lands, the main body of the unmanned aerial vehicle can be well protected, meanwhile, the telescopic supporting buffering assembly can slightly incline in the vertical direction, and when the telescopic supporting buffering assembly slightly inclines, the upper end of the telescopic supporting buffering assembly inclines towards the inner side direction of the unmanned aerial vehicle, so that the gravity center of the unmanned aerial vehicle is effectively positioned at the inner side, the problem of side turning of the unmanned aerial vehicle is prevented, and the stability and the reliability of landing of the unmanned aerial vehicle are ensured. The damping device can well realize damping for landing of the unmanned aerial vehicle, and even if the unmanned aerial vehicle bears heavy load, the damping device absorbs vibration by using the torsion spring and converts the telescopic buffering force into the force of the torsion spring by using the telescopic supporting buffering assembly, so that the oscillation performance is effectively reduced, and the stability and the stationarity of landing are improved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention are equivalent to or changed within the technical scope of the present invention.
Claims (10)
1. A light unmanned aerial vehicle foot stool folding and unfolding device comprises a connecting seat (2), a folding and unfolding driving mechanism and a buffering support leg assembly (7), wherein the upper end of the buffering support leg assembly (7) is hinged to the connecting seat (2), the folding and unfolding driving mechanism for driving the buffering support leg assembly to unfold and retract is further arranged on the connecting seat (2), and the top of the connecting seat is fixed to the bottom of an unmanned aerial vehicle main body (1); the unmanned aerial vehicle landing device is characterized in that the buffering support leg assembly (7) can be contracted and can at least absorb the buffering force between the unmanned aerial vehicle and the ground when the unmanned aerial vehicle lands; and is
The buffer support leg assembly (7) comprises a connecting buffer frame (5), a telescopic support buffer assembly and a balance bottom frame (6), wherein the top of the connecting buffer frame (5) is connected to the connecting seat, the bottom of the connecting buffer frame is connected with the telescopic support buffer assembly, the lower part of the telescopic support buffer assembly is connected to the balance bottom frame (6), and the balance bottom frame (6) is also rigidly connected to a retraction rotation center of the retraction driving mechanism;
the contained angle is the setting that can finely tune between the central axis of flexible support buffering subassembly and the vertical line to when making unmanned aerial vehicle descend the buffering, flexible support buffering subassembly can incline a little in the vertical direction, and during the slope of a little, the inboard direction slope of the upper end orientation unmanned aerial vehicle of flexible support buffering subassembly.
2. The light unmanned aerial vehicle foot stool winding and unwinding device of claim 1, wherein an inclination range of an included angle between a central axis of the telescopic support buffer assembly and a vertical line is within 5 °.
3. The foot stool retracting device of the light unmanned aerial vehicle as claimed in claim 1, wherein the connecting buffer frame (5) is a three-elastic-rod frame structure, the cross section of the upper end of the three-elastic-rod frame structure is larger than that of the lower end of the three-elastic-rod frame structure, the upper end of the connecting buffer frame (5) is connected to two ends of the hinge shaft (4), and the hinge shaft (4) is rotatably sleeved in the connecting hole of the connecting seat (2).
4. The unmanned aerial vehicle foot stool folding and unfolding device according to claim 3 is characterized in that a knob (3) or a rotary cylinder is connected to the end of the hinged rotating shaft, so that the buffering foot stool assembly (7) can be folded and unfolded through the knob or the rotary cylinder.
5. The unmanned aerial vehicle foot stool retracting device according to claim 3, wherein the telescopic supporting and buffering assembly comprises a connecting sleeve seat (9), a sliding sleeve (10), a spring (11), a telescopic strut (12) and a support leg (8), wherein the upper end of the connecting sleeve seat (9) is hinged to the bottom side of the connecting buffering frame (5), the sliding sleeve (10) extending downwards is fixedly arranged on the connecting sleeve seat, the telescopic strut (12) is slidably arranged in the sliding sleeve, the bottom of the telescopic strut penetrates through the balance chassis (6) and is connected to the support leg, a limiting shoulder (22) is fixedly arranged on the upper portion of the telescopic strut, and the spring (11) is arranged between the limiting shoulder and the bottom of the sliding sleeve.
6. The unmanned aerial vehicle foot rest retraction device according to claim 5, wherein a through hole is formed in the balance underframe (6), a spherical bearing (13) is arranged on the inner side of the top of the through hole, a guide sliding sleeve is fixedly arranged on the inner ring of the spherical bearing, and the telescopic strut (12) is sleeved on the spherical bearing in a telescopic sliding mode so as to enable the telescopic strut (12) to slide up and down and be slightly adjusted within a certain inclination angle.
7. The unmanned aerial vehicle foot stool retracting device according to claim 5, wherein a buffering and vibration absorbing mechanism is arranged inside the balance underframe (6) and is in transmission connection with the telescopic support column (12).
8. The retractable device for the foot stool of the light unmanned aerial vehicle as claimed in claim 7, wherein the outer wall of the retractable pillar (12) is spirally provided with a spiral guide groove (14), the vibration buffering and absorbing mechanism at least comprises a rotary vibration absorbing wheel (17), the inner wall of the rotary vibration absorbing wheel is provided with a convex pillar which extends into the spiral guide groove (14) and is matched with the spiral guide groove, and when the retractable pillar (12) moves up and down, the convex pillar can enable the rotary vibration absorbing wheel to rotate.
9. The light unmanned aerial vehicle foot stool retracting device according to claim 8, wherein an anti-axial moving frame (15) is arranged in the balance chassis, an anti-rotating column is fixedly arranged on the inner side of the anti-axial moving frame (15), an anti-rotating groove extending in the axial direction is formed in the telescopic strut (12), and the anti-rotating column is in sliding fit with the anti-rotating groove and can prevent the telescopic strut (12) from rotating.
10. The foot stool retracting device of the light unmanned aerial vehicle according to claim 8, wherein the buffering and vibration absorbing mechanism further comprises a torsion spring disc (19) and a transmission gear rod (18), wherein the upper end of the rotation vibration absorbing wheel (17) is rotatably connected with the lower end face of the anti-axial movement frame (15) through a thin-wall bearing (20) so as to allow the rotation vibration absorbing wheel (17) to rotate, the lower end face of the rotation vibration absorbing wheel (17) is provided with teeth in transmission engagement with the transmission gear rod (18), and the end of the transmission gear rod (18) is provided with the torsion spring disc (19) mounted on the balance chassis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911068145.4A CN110775257B (en) | 2019-11-04 | 2019-11-04 | Lightweight unmanned aerial vehicle foot rest winding and unwinding devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911068145.4A CN110775257B (en) | 2019-11-04 | 2019-11-04 | Lightweight unmanned aerial vehicle foot rest winding and unwinding devices |
Publications (2)
| Publication Number | Publication Date |
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| CN110775257A CN110775257A (en) | 2020-02-11 |
| CN110775257B true CN110775257B (en) | 2021-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911068145.4A Expired - Fee Related CN110775257B (en) | 2019-11-04 | 2019-11-04 | Lightweight unmanned aerial vehicle foot rest winding and unwinding devices |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112429206A (en) * | 2020-12-16 | 2021-03-02 | 湖南三易精工科技有限公司 | Landing leg with landing self-balancing function for unmanned aerial vehicle |
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| CN204871591U (en) * | 2015-07-17 | 2015-12-16 | 零度智控（北京）智能科技有限公司 | Aircraft retractable landing gear and aircraft |
| CN206407113U (en) * | 2016-12-30 | 2017-08-15 | 东莞市光点电子科技有限公司 | A kind of aircraft lifting buffering foot stand mechanism |
| CN108674636A (en) * | 2018-05-24 | 2018-10-19 | 河南工学院 | A kind of twin-engined quadrotor drones and its leg means |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205707310U (en) * | 2016-03-16 | 2016-11-23 | 清远市巨劲科技有限公司 | A kind of unmanned plane damping undercarriage |
| US10787249B2 (en) * | 2016-10-12 | 2020-09-29 | Intel Corporation | Multi-stage reduction of impact forces |
| CN206900639U (en) * | 2017-03-23 | 2018-01-19 | 四川建筑职业技术学院 | A kind of unmanned plane damping undercarriage |
| CN108974335A (en) * | 2018-08-02 | 2018-12-11 | 梁小燕 | A kind of shock-damping structure of unmanned plane |
| CN109018318B (en) * | 2018-10-10 | 2023-03-28 | 桂林航天工业学院 | Lightweight unmanned aerial vehicle shock attenuation landing gear |
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2019
- 2019-11-04 CN CN201911068145.4A patent/CN110775257B/en not_active Expired - Fee Related
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|---|---|---|---|---|
| CN204871591U (en) * | 2015-07-17 | 2015-12-16 | 零度智控（北京）智能科技有限公司 | Aircraft retractable landing gear and aircraft |
| CN206407113U (en) * | 2016-12-30 | 2017-08-15 | 东莞市光点电子科技有限公司 | A kind of aircraft lifting buffering foot stand mechanism |
| CN108674636A (en) * | 2018-05-24 | 2018-10-19 | 河南工学院 | A kind of twin-engined quadrotor drones and its leg means |
Non-Patent Citations (1)
| Title |
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| 某无人机起落架着陆缓冲性能优化及试验验证;梅荣;《工程科技II辑》;20190301;全文 * |
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