CN109533299B - Trigger mechanism of unmanned aerial vehicle undercarriage wheel load switch - Google Patents
Trigger mechanism of unmanned aerial vehicle undercarriage wheel load switch Download PDFInfo
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- CN109533299B CN109533299B CN201811451785.9A CN201811451785A CN109533299B CN 109533299 B CN109533299 B CN 109533299B CN 201811451785 A CN201811451785 A CN 201811451785A CN 109533299 B CN109533299 B CN 109533299B
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- 230000007246 mechanism Effects 0.000 title claims abstract description 19
- 238000005461 lubrication Methods 0.000 claims description 29
- 238000003756 stirring Methods 0.000 claims description 25
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 239000004519 grease Substances 0.000 description 5
- 230000001050 lubricating effect Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 210000002445 nipple Anatomy 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
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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
- B64C25/34—Alighting gear characterised by elements which contact the ground or similar surface wheeled type, e.g. multi-wheeled bogies
- B64C25/36—Arrangements or adaptations of wheels, tyres or axles in general
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Handcart (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
The invention relates to the technical field of unmanned aerial vehicle wheel-mounted switches, in particular to a trigger mechanism of an unmanned aerial vehicle landing gear wheel-mounted switch, which comprises a wheel shaft, a rotating shaft, a swinging shaft and a trigger plate, wherein the wheel-mounted switch is fixedly arranged on a support arm; the support arm is provided with a limiting hole, the swinging shaft penetrates through the limiting hole, the outer diameter of the part of the swinging shaft positioned in the limiting hole is smaller than the diameter of the limiting hole, and a swinging gap is formed between the swinging shaft and the limiting hole; the bottom of the trigger plate is provided with a poking hole, a swinging shaft penetrates through the poking hole, the outer diameter of the part of the swinging shaft positioned in the poking hole is smaller than the diameter of the poking hole, and a poking gap is formed between the poking hole and the swinging shaft; the wheel axle rotates to drive the trigger plate to rotate, so that the top end of the trigger plate triggers the wheel-mounted switch. The strength design requirement is met, the wheel-mounted switch is guaranteed to be normally turned on and turned off, the cost is saved, the risk of oil gas leakage is avoided, and the safety is guaranteed.
Description
Technical Field
The invention relates to the technical field of unmanned aerial vehicle wheel-mounted switches, in particular to a trigger mechanism of an unmanned aerial vehicle landing gear wheel-mounted switch.
Background
The wheel load switch is used as an important component of the unmanned aerial vehicle, supplies wheel load signals to the unmanned aerial vehicle, and is the most important reference basis for judging the ground-to-air state of the aircraft; therefore, the installation position and the conduction condition of the wheel-mounted switch directly determine the accuracy of unmanned aerial vehicle control. The conventional wheel-mounted switch is generally triggered to be turned on and off through the stroke change of the buffer, and oil gas leakage risks can occur as the buffer needs to be filled with oil liquid or gas, so that the use cost is increased; and the buffer oil gas pressure filling parameters are unsuitable, so that the conduction performance of the wheel-mounted switch is directly affected.
Therefore, the application proposes a trigger mechanism of unmanned aerial vehicle undercarriage wheel load switch.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: to the problem that exists, provide a trigger mechanism of unmanned aerial vehicle undercarriage wheel load switch, stable in structure is reasonable, satisfies aircraft strength design requirement, can effectively guarantee the normal switch-on and the disconnection of wheel load switch, and the working process is reliable effective, practices thrift use cost, does not have oil gas to reveal the risk to guarantee aircraft safety.
The technical scheme adopted by the invention is as follows: the trigger mechanism of the landing gear wheel load switch of the unmanned aerial vehicle comprises a wheel shaft, a rotating shaft, a swinging shaft and a trigger plate, wherein the wheel load switch is fixedly arranged on a support arm of the landing gear, the wheel shaft is rotatably and fixedly connected with the bottom of the support arm through the rotating shaft, the trigger plate is fixedly arranged on the support arm and can rotate relative to the support arm, the swinging shaft is arranged on the upper part of the wheel shaft, and the wheel shaft can drive the swinging shaft to swing;
the support arm is provided with a limiting hole, the swinging shaft penetrates through the limiting hole, the outer diameter of the part of the swinging shaft positioned in the limiting hole is smaller than the diameter of the limiting hole, and a swinging gap is formed between the swinging shaft and the limiting hole;
the bottom of the trigger plate is provided with a stirring hole, the swinging shaft penetrates through the stirring hole, the outer diameter of the part of the swinging shaft positioned in the stirring hole is smaller than the diameter of the stirring hole, and a stirring gap is formed between the swinging shaft and the stirring hole;
the rotation of the wheel axle can drive the trigger plate to rotate, so that the top end of the trigger plate triggers the wheel-mounted switch.
The lower part of the wheel shaft is fixedly connected with the rotating shaft of the tire, when the unmanned aerial vehicle falls and the tire touches the ground, the ground gives an upward force to the rotating shaft of the tire, and the force can generate a clockwise moment at the rotating shaft, so that the wheel shaft can rotate clockwise, the wheel shaft, the rotating shaft, the swinging shaft, the trigger plate and other mechanical structures are matched, the rotating motion of the wheel shaft can be transmitted to the trigger plate through the swinging shaft, the trigger plate rotates, and then the top end of the trigger plate triggers the wheel-mounted switch, so that the wheel-mounted switch is conducted; conversely, when the tire leaves the ground, under the action of the gravity of the tire, a counterclockwise moment is generated at the rotating shaft, and the trigger plate reversely rotates through the cooperation of the wheel shaft, the rotating shaft, the swinging shaft and the trigger plate, so that the top end of the trigger plate leaves the wheel-mounted switch, and the wheel-mounted switch is disconnected at the moment; the on and off processes are reliable and effective; the swing clearance value and the toggle clearance value can meet the requirement that the trigger plate rotates to the top end of the trigger plate to trigger the wheel-mounted switch, and the trigger plate can rotate to return to the initial position; the fixed connection of the rotating shaft and the bottom of the support arm and the cooperation of the swinging shaft and the limiting hole simultaneously provide stable support for the tire ground contact.
The invention relates to a trigger mechanism of an unmanned aerial vehicle landing gear wheel-mounted switch, wherein two mounting plates are arranged at the bottom of a support arm, mounting holes are formed at the bottoms of the two mounting plates, the upper part of a wheel shaft is positioned between the two mounting plates, and the wheel shaft and the support arm are rotatably and fixedly connected through a rotating shaft passing through the wheel shaft and the mounting holes; the upper parts of the two mounting plates are respectively provided with the limiting holes, two ends of the swinging shaft correspondingly penetrate through the two limiting holes, and one end part of the swinging shaft penetrates through the stirring hole.
The arrangement makes the connection and fixation between the wheel axle and the support arm more reasonable, stable and reliable.
According to the trigger mechanism of the landing gear wheel load switch of the unmanned aerial vehicle, the lower bushing is fixedly arranged in the mounting hole, the rotating shaft is arranged in the lower bushing and is matched with the lower bushing, and the rotating shaft can rotate relative to the lower bushing; the novel rotary shaft is characterized in that one end of the rotary shaft is provided with a first limiting step, the external dimension of the first limiting step is larger than the diameter of the mounting hole, and the outer surface of the other end of the rotary shaft is provided with an external thread and is in threaded connection with a first nut.
So set up, spacing step one and nut one can prevent effectively that the axis of rotation from breaking away from the mounting panel for rotatable fixed connection between axis of rotation and the mounting panel is more reliable and stable, simultaneously, realizes the cooperation through the lower bush between mounting panel and the axis of rotation, avoids direct rotational friction between the two, avoids wearing and tearing simultaneously, increase life.
According to the trigger mechanism of the landing gear wheel-mounted switch of the unmanned aerial vehicle, the rotating shaft is provided with the axial lubrication hole, the axial lubrication hole penetrates through the limiting step and axially extends along the rotating shaft, the inlet of the axial lubrication hole is connected with the oil injection nozzle in a threaded manner, the position, corresponding to the lower bushing, of the rotating shaft is provided with the radial lubrication hole, one end of the radial lubrication hole is communicated with the axial lubrication hole, and the other end of the radial lubrication hole is communicated with the inner surface area of the lower bushing.
So set up, accessible grease nipple pours into lubricating grease into, and lubricating grease gets into axial lubrication hole, and then gets into radial lubrication hole, finally gets into and lubricates between lower bush internal surface and the axis of rotation surface, provides lubrication for the rotation process of axis of rotation in the lower bush, further increase life.
The invention relates to a trigger mechanism of an unmanned aerial vehicle landing gear wheel load switch, wherein a swing shaft comprises a large-diameter section and a small-diameter section, a limiting step II is arranged between the large-diameter section and the small-diameter section, the external dimension of the limiting step II is larger than the diameter of a limiting hole, and the limiting step II is positioned between a mounting plate and a trigger plate; the small-diameter section passes through the stirring hole, an external thread is arranged at the outer end of the small-diameter section, a second nut is connected with the external thread, a rotating pin shaft is arranged at the bottom of the trigger plate, a rotating hole is correspondingly formed in the mounting plate, the rotating pin shaft is arranged in the rotating hole and can rotate in the rotating hole, and the second nut is used for limiting the trigger plate; the outer end of the large-diameter section is provided with external threads, and the threads are connected with a third nut.
The setting like this, spacing step two and nut three can prevent effectively that the oscillating axle from breaking away from the mounting panel, and nut two, the cooperation in rotation round pin axle and rotation hole can prevent effectively that the trigger plate from breaking away from the mounting panel for the connection between oscillating axle, mounting panel, the trigger plate is more reasonable reliable.
According to the trigger mechanism of the landing gear wheel load switch of the unmanned aerial vehicle, the upper bushing is fixedly arranged in the limiting hole, the large-diameter section is arranged in the upper bushing, and the swing gap is formed between the outer surface of the large-diameter section and the inner surface of the upper bushing.
So set up, realize the cooperation through last bush between mounting panel and the oscillating axle, avoid direct contact between the two, avoid the two wearing and tearing simultaneously, increase life.
According to the trigger mechanism of the landing gear wheel load switch of the unmanned aerial vehicle, the support arm is provided with the lower connecting seat, the trigger plate is provided with the upper connecting seat, and the two connecting seats are connected through the reset tension spring.
So set up, after unmanned aerial vehicle flies off the ground, the extension spring that resets helps the top of trigger plate to leave the wheel load switch and reset, is favorable to the disconnection process of wheel load switch.
The trigger mechanism of the landing gear wheel-mounted switch of the unmanned aerial vehicle is characterized in that the top end of the trigger plate is provided with a trigger part, and the trigger part is used for being in contact with the wheel-mounted switch.
So set up, trigger part makes trigger plate more smooth effective to the trigger process of wheel load switch.
Compared with the prior art, the beneficial effects of adopting the technical scheme are as follows: the invention has stable and reasonable structure, meets the design requirement of the strength of the airplane, can effectively ensure the normal connection and disconnection of the wheel-mounted switch, has reliable and effective working process, saves the use cost, does not have the risk of oil gas leakage, and further ensures the safety of the airplane.
Drawings
FIG. 1 is a partial cross-sectional view of the present invention;
FIG. 2 is an enlarged view of FIG. 1A;
FIG. 3 is an enlarged view of B in FIG. 1;
FIG. 4 is an enlarged view of C in FIG. 1;
FIG. 5 is an enlarged view of D in FIG. 1;
FIG. 6 is a side view of the present invention;
fig. 7 is a schematic representation of the present invention in cooperation with a tire.
Reference numerals: 1 is a wheel load switch, 2 is a wheel axle, 3 is a rotating shaft, 4 is a swinging shaft, 5 is a trigger plate, 6 is a support arm, 7 is a swinging gap, 8 is a toggle gap, 9 is a mounting plate, 10 is a lower bushing, 11 is a limiting step I, 12 is a nut I, 13 is an axial lubrication hole, 14 is a grease nipple, 15 is a radial lubrication hole, 16 is a limiting step II, 17 is a nut II, 18 is a rotating pin shaft, 19 is a nut III, 20 is an upper bushing, 21 is a lower connecting seat, 22 is an upper connecting seat, 23 is a reset tension spring, 24 is a trigger part, 25 is a pin hole, 26 is a gasket, and 27 is a tire.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Example 1
As shown in fig. 1, 4 to 7, a trigger mechanism of an unmanned aerial vehicle landing gear wheel load switch comprises an axle 2, a rotating shaft 3, a swinging shaft 4 and a trigger plate 5, wherein the wheel load switch 1 is fixedly arranged on a support arm 6 of the landing gear, the axle 2 is fixedly connected with the bottom of the support arm 6 in a rotatable manner through the rotating shaft 3, the trigger plate 5 is fixedly arranged on the support arm 6 and can rotate relative to the support arm 6, the swinging shaft 4 is arranged on the upper part of the axle 2, and the axle 2 can drive the swinging shaft 4 to swing;
the support arm 6 is provided with a limiting hole, the swinging shaft 4 passes through the limiting hole, the outer diameter of the part of the swinging shaft 4 positioned in the limiting hole is smaller than the diameter of the limiting hole, a swinging gap 7 is formed between the two parts, and the swinging shaft 4 can swing within the range of the swinging gap 7;
the bottom of the trigger plate 5 is provided with a stirring hole, the swinging shaft 4 passes through the stirring hole, the outer diameter of the part of the swinging shaft 4 positioned in the stirring hole is smaller than the diameter of the stirring hole, a stirring gap 8 is formed between the part of the swinging shaft 4 and the stirring hole, and the swinging shaft 4 can stir the bottom of the trigger plate 5 within the stirring gap 8 so as to enable the bottom of the trigger plate to rotate;
the rotation of the wheel axle 2 can drive the trigger plate 5 to rotate, so that the top end of the trigger plate 5 triggers the wheel-mounted switch 1, the lower part of the wheel axle 2 is fixedly connected with a rotating shaft of the tire 27, the fixed connection point is positioned below the rotating shaft 3, and the top of the support arm 6 is fixedly connected with an unmanned aerial vehicle body (not shown in the figure).
Specifically, the bottom of the support arm 6 is provided with two mounting plates 9, the bottoms of the two mounting plates 9 are provided with mounting holes, the upper part of the wheel axle 2 is positioned between the two mounting plates 9, and the wheel axle 2 and the support arm 6 are rotatably and fixedly connected through the rotating shaft 3 passing through the wheel axle 2 and the mounting holes; limiting holes are formed in the upper portions of the two mounting plates 9, two ends of the swinging shaft 4 correspondingly penetrate through the two limiting holes, and one end of the swinging shaft 4 penetrates through the poking hole.
Further, the support arm 6 is provided with a lower connecting seat 21, the trigger plate 5 is provided with an upper connecting seat 22, the two connecting seats are connected through a reset tension spring 23, specifically, the lower connecting seat 21 is positioned on the mounting plate 9, the reset tension spring 23 is in a stretching state, and the lower connecting seat 21 is positioned below the upper connecting seat 22; the trigger plate 5 has a trigger portion 24 at the tip, and the trigger portion 24 is used for contacting with the wheel-mounted switch 1.
Example 2
As shown in fig. 2 and 3, on the basis of embodiment 1, a lower bushing 10 is fixedly installed in the installation hole, a rotating shaft 3 is installed in the lower bushing 10 and is matched with the lower bushing 10, and the rotating shaft 3 can rotate relative to the lower bushing 10; one end of the rotating shaft 3 is provided with a first limiting step 11, the external dimension of the first limiting step 11 is larger than the diameter of the mounting hole, namely, each width of the first limiting step 11 in the circumferential direction is larger than the diameter of the mounting hole, and the outer surface of the other end of the rotating shaft 3 is provided with an external thread which is connected with a first nut 12.
Specifically, the lower bushing 10 is in a step shape and comprises a cylinder part and a ring plate part, the cylinder part is positioned in the mounting hole, the ring plate part is positioned between the inner surface of the mounting plate 9 and the outer surface of the wheel shaft 2, the mounting plate 9 is prevented from being in direct contact with the wheel shaft 2, the two parts are prevented from being worn at the same time, and the service life is prolonged; the outer thread end of the rotating shaft 3 is provided with a radial pin hole 25, the pin hole 25 is used for installing a cotter pin for limiting the first nut 12, the cotter pin is used for preventing the first nut 12 from loosening, and the connection stability is ensured; the externally threaded end of the rotating shaft 3 is sleeved with a gasket 26, and the gasket 26 is positioned between the first nut 12 and the mounting plate 9.
Further, the rotating shaft 3 is provided with an axial lubrication hole 13, the axial lubrication hole 13 penetrates through the first limiting step 11 and axially extends along the rotating shaft 3, an inlet of the axial lubrication hole 13 is in threaded connection with an oil injection nozzle 14, the position of the rotating shaft 3 corresponding to the lower bushing 10 is provided with radial lubrication holes 15, one end of each radial lubrication hole 15 is communicated with the axial lubrication hole 13, the other end of each radial lubrication hole is communicated with the inner surface area of the lower bushing 10, lubricating grease can be injected through the oil injection nozzle 14, enters the axial lubrication hole 13, further enters the radial lubrication holes 15, and finally enters between the inner surface of the lower bushing 10 and the outer surface of the rotating shaft 3 for lubrication.
Example 3
As shown in fig. 4 and 5, based on embodiment 2, the oscillating shaft 4 includes a large diameter section and a small diameter section, a second limiting step 16 is provided between the large diameter section and the small diameter section, the external dimension of the second limiting step 16 is larger than the diameter of the limiting hole, that is, each width of the second limiting step 16 in the circumferential direction is larger than the diameter of the limiting hole, and the second limiting step 16 is located between the mounting plate 9 and the trigger plate 5; the small-diameter section passes through the toggle hole, the outer end of the small-diameter section is provided with an external thread and is in threaded connection with a second nut 17, the bottom of the trigger plate 5 is provided with a rotating pin shaft 18, the mounting plate 9 is correspondingly provided with a rotating hole, the rotating pin shaft 18 is arranged in the rotating hole and can rotate in the rotating hole, the second nut 17 is positioned at the outer side of the trigger plate 5, and the second nut 17 limits the trigger plate 5; the outer end of the large-diameter section is provided with external threads and is in threaded connection with a third nut 19.
Specifically, the outer diameter of the small-diameter section is smaller than the diameter of the poking hole, and a poking gap 8 is formed between the outer surface of the small-diameter section and the inner surface of the poking hole; the outer thread end of the small-diameter section is provided with a radial pin hole 25, the pin hole 25 is used for installing a cotter pin for limiting the second nut 17, and the cotter pin is used for preventing the second nut 17 from loosening and ensuring stable connection; the outer thread end of the small-diameter section is sleeved with a gasket 26, and the gasket 26 is positioned between the second nut 17 and the trigger plate 5; the outer thread end of the large-diameter section is provided with a radial pin hole 25, the pin hole 25 is used for installing a cotter pin for limiting the third nut 19, and the cotter pin is used for preventing the third nut 19 from loosening and ensuring stable connection; the external thread end of the large-diameter section is sleeved with a gasket 26, and the gasket 26 is positioned between the third nut 19 and the mounting plate 9.
Further, an upper bushing 20 is fixedly installed in the limiting hole, the large-diameter section is installed in the upper bushing 20, and the swinging gap 7 is formed between the outer surface of the large-diameter section and the inner surface of the upper bushing 20.
Specifically, the upper bushing 20 is in a step shape, and comprises a cylinder part and a ring plate part, wherein the cylinder part is positioned in the limiting hole, and the ring plate part is positioned between the inner surface of the mounting plate 9 and the outer surface of the wheel shaft 2, so that the mounting plate 9 and the wheel shaft 2 are prevented from being in direct contact, the two are prevented from being worn simultaneously, and the service life is prolonged.
When the unmanned aerial vehicle lands and the tire 27 touches the ground, the ground gives an upward force to the rotating shaft of the tire 27, the force acts on the wheel shaft 2, and then a clockwise moment can be generated at the rotating shaft 3, so that the wheel shaft 2 can rotate clockwise in the mounting plate 9 through the rotating shaft 3, the rotating shaft 3 drives the swinging shaft 4 on the upper part of the wheel shaft 3 to swing clockwise, the small-diameter section of the swinging shaft 4 toggles the bottom of the trigger plate 5, the trigger plate 5 rotates anticlockwise around the rotating pin shaft 18, the pulling force of the reset tension spring 23 is overcome, and then the trigger part 24 at the top of the trigger plate 5 contacts the trigger wheel-mounted switch 1, and the wheel-mounted switch 1 is conducted.
After unmanned aerial vehicle takes off, tire 27 leaves the ground, under the effect of tire 27 gravity, this force acts on shaft 2, and then can produce a anticlockwise moment in axis of rotation 3 department for shaft 2 accessible axis of rotation 3 anticlockwise rotation in mounting panel 9, axis of rotation 3 drives the anticlockwise swing of the oscillating axle 4 on its upper portion, the minor diameter section of oscillating axle 4 stirs trigger plate 5 bottom, make trigger plate 5 rotate clockwise around its rotation round pin axle 18, and then make trigger plate 5 top trigger part 24 break away from wheel load switch 1, wheel load switch 1 disconnection, simultaneously, reset extension spring 23's pulling force still can directly act on upper connecting seat 22, the trigger part 24 of initiative pulling trigger plate 5 top breaks away from wheel load switch 1.
The invention is not limited to the specific embodiments described above. The invention extends to any novel one, or any novel combination, of the features disclosed in this specification, as well as to any novel one, or any novel combination, of the steps of the method or process disclosed. It is intended that insubstantial changes or modifications from the invention as described herein be covered by the claims below, as viewed by a person skilled in the art, without departing from the true spirit of the invention.
Claims (4)
1. The utility model provides a trigger mechanism of unmanned aerial vehicle undercarriage wheel load switch which characterized in that: the wheel load switch (1) is fixedly arranged on a support arm (6) of the landing gear, the wheel axle (2) is fixedly connected with the bottom of the support arm (6) in a rotatable mode through the rotating shaft (3), the trigger plate (5) is fixedly arranged on the support arm (6) and can rotate relative to the support arm (6), the swing shaft (4) is arranged on the upper portion of the wheel axle (2), and the wheel axle (2) can drive the swing shaft (4) to swing;
the support arm (6) is provided with a limit hole, the swing shaft (4) penetrates through the limit hole, the outer diameter of the swing shaft (4) positioned in the limit hole is smaller than the diameter of the limit hole, and a swing gap (7) is formed between the swing shaft and the limit hole;
the bottom of the trigger plate (5) is provided with a stirring hole, the swinging shaft (4) penetrates through the stirring hole, the outer diameter of the part of the swinging shaft (4) positioned in the stirring hole is smaller than the diameter of the stirring hole, and a stirring gap (8) is formed between the swinging shaft and the stirring hole;
the rotation of the wheel axle (2) can drive the trigger plate (5) to rotate, so that the top end of the trigger plate (5) can trigger the wheel-mounted switch (1); the bottom of the support arm (6) is provided with two mounting plates (9), the bottoms of the two mounting plates (9) are provided with mounting holes, the upper part of the wheel axle (2) is positioned between the two mounting plates (9), and the wheel axle (2) and the support arm (6) are rotatably and fixedly connected through the rotating shaft (3) penetrating through the wheel axle (2) and the mounting holes; the upper parts of the two mounting plates (9) are respectively provided with the limiting holes, the two ends of the swinging shaft (4) correspondingly penetrate through the two limiting holes, and one end part of the swinging shaft (4) penetrates through the stirring hole;
a lower bushing (10) is fixedly arranged in the mounting hole, the rotating shaft (3) is mounted in the lower bushing (10) and is matched with the lower bushing, and the rotating shaft (3) can rotate relative to the lower bushing (10); one end of the rotating shaft (3) is provided with a first limiting step (11), the external dimension of the first limiting step (11) is larger than the diameter of the mounting hole, and the outer surface of the other end of the rotating shaft (3) is provided with an external thread which is connected with a first nut (12);
the rotary shaft is provided with an axial lubrication hole, the axial lubrication hole penetrates through the limit step and axially extends along the rotary shaft, an inlet of the axial lubrication hole is in threaded connection with an oil injection nozzle, the positions of the rotary shaft corresponding to the lower bushing are provided with radial lubrication holes, one end of each radial lubrication hole is communicated with the axial lubrication hole, and the other end of each radial lubrication hole is communicated with the inner surface area of the lower bushing;
the swing shaft comprises a large-diameter section and a small-diameter section, a second limiting step is arranged between the large-diameter section and the small-diameter section, the external dimension of the second limiting step is larger than the diameter of the limiting hole, and the second limiting step is arranged between the mounting plate and the trigger plate; the small-diameter section passes through the stirring hole, an external thread is arranged at the outer end of the small-diameter section, a second nut is connected with the external thread, a rotating pin shaft is arranged at the bottom of the trigger plate, a rotating hole is correspondingly formed in the mounting plate, the rotating pin shaft is arranged in the rotating hole and can rotate in the rotating hole, and the second nut is used for limiting the trigger plate; the outer end of the large-diameter section is provided with external threads, and the threads are connected with a third nut.
2. The trigger mechanism of an unmanned aerial vehicle landing gear wheel load switch of claim 1, wherein: an upper bushing (20) is fixedly installed in the limiting hole, the large-diameter section is installed in the upper bushing (20), and the swinging gap (7) is formed between the outer surface of the large-diameter section and the inner surface of the upper bushing (20).
3. The trigger mechanism of an unmanned aerial vehicle landing gear wheel load switch of claim 1, wherein: the support arm (6) is provided with a lower connecting seat (21), the trigger plate (5) is provided with an upper connecting seat (22), and the two connecting seats are connected through a reset tension spring (23).
4. The trigger mechanism of an unmanned aerial vehicle landing gear wheel load switch of claim 1, wherein: the top end of the trigger plate (5) is provided with a trigger part (24), and the trigger part (24) is used for being contacted with the wheel-mounted switch (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811451785.9A CN109533299B (en) | 2018-11-30 | 2018-11-30 | Trigger mechanism of unmanned aerial vehicle undercarriage wheel load switch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811451785.9A CN109533299B (en) | 2018-11-30 | 2018-11-30 | Trigger mechanism of unmanned aerial vehicle undercarriage wheel load switch |
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| CN109533299A CN109533299A (en) | 2019-03-29 |
| CN109533299B true CN109533299B (en) | 2024-03-22 |
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| US5263664A (en) * | 1992-03-03 | 1993-11-23 | Messier-Bugatti | Raisable landing gear |
| CN103879553A (en) * | 2012-12-20 | 2014-06-25 | 梅西耶-布加蒂-道提公司 | An aircraft wheel fitted with dricekey-bolts |
| CN106081071A (en) * | 2016-06-02 | 2016-11-09 | 江西洪都航空工业集团有限责任公司 | A kind of Novel electric door trip cam trigger mechanism |
| CN108054033A (en) * | 2017-12-14 | 2018-05-18 | 中国航空工业集团公司成都飞机设计研究所 | A kind of fixed front-wheel load switch trigger mechanism |
| CN108032998A (en) * | 2017-12-20 | 2018-05-15 | 中国科学院工程热物理研究所 | Recoil simulator is carried based on the unmanned plane undercarriage wheel of shock strut and toggle |
| CN209366448U (en) * | 2018-11-30 | 2019-09-10 | 四川腾盾科技有限公司 | A kind of trigger mechanism of unmanned plane undercarriage wheel load switch |
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