Undercarriage with damping function for plant protection unmanned aerial vehicle

Abstract

The utility model relates to the technical field of damping of unmanned aerial vehicles, and discloses a landing gear with a damping function for a plant protection unmanned aerial vehicle, the landing gear comprises a machine body assembly and a damping retractable assembly, the machine body assembly comprises a base, a machine body installed on the base and a propeller installed on the machine body; and the damping retractable assembly comprises a first mounting groove formed in the bottom of the base, and a damping assembly and a retractable assembly which are mounted in the first mounting groove. According to the undercarriage with the damping function for the plant protection unmanned aerial vehicle, by arranging the damping assembly, pulleys can make contact with the ground when the vehicle body assembly lands, and the ground extrudes the pulleys along with reduction of the distance between the vehicle body assembly and the ground, so that the pulleys drive connecting rods to move upwards; and the damping springs can be compressed under connection of the connecting plates, so that the damping springs deform, the damping and buffering purposes can be achieved, and the problem that damping cannot be conducted during landing in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of shock absorption of unmanned aerial vehicles, in particular to a landing gear with a shock absorption function for a crop protection unmanned aerial vehicle. Background Art

[0002] Plant protection UAV is an unmanned aircraft used for agricultural and forestry plant protection operations. It is an unmanned aircraft controlled by radio remote control equipment and self-contained program control devices, or operated completely or intermittently autonomously by an on-board computer.

[0003] A drone needs a landing gear for takeoff and landing. The landing gear in the prior art is generally a rigid leg, which does not have any buffer when contacting the ground during landing, and can easily cause malfunctions of the precision equipment on board. At the same time, the landing gear cannot be retracted, resulting in greater wind resistance during flight, affecting the flight speed. Utility Model Content

[0004] The utility model provides a landing gear with a shock-absorbing function for a plant protection UAV, which has the beneficial effects of shock absorption and easy storage, and solves the problems of being unable to perform shock absorption and being inconvenient to store mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a landing gear with a shock-absorbing function for a plant protection UAV, comprising:

[0006] A body assembly, comprising a base, a body mounted on the base, and a propeller mounted on the body;

[0007] A shock-absorbing and retractable assembly, comprising a first mounting groove provided at the bottom of the base, and a shock-absorbing assembly and a retractable assembly installed in the first mounting groove;

[0008] The driving assembly includes a second mounting groove opened at the bottom of the base, and a pressurizing assembly arranged inside the second mounting groove.

[0009] Preferably, the number of the shock-absorbing and retractable assemblies is three, and the three shock-absorbing and retractable assemblies are arranged in a herringbone shape.

[0010] Preferably, the shock absorbing assembly includes a support rod arranged inside the first mounting groove, and a shock absorbing groove opened inside the support rod, a shock absorbing spring and a connecting plate are arranged inside the shock absorbing groove, the bottom of the connecting plate is fixedly connected to a connecting rod, the bottom of the connecting rod is fixedly installed with a pulley, and the two ends of the shock absorbing spring are respectively connected to the inner top end of the shock absorbing groove and the upper surface of the connecting plate.

[0011] Preferably, a through groove is provided on the lower surface of the support rod relative to the position of the connecting rod, the connecting rod is movably sleeved inside the through groove, the bottom of the connecting rod passes through the outer side of the bottom end of the support rod, and the cross-sectional area value of the through groove when viewed from above is smaller than the cross-sectional area value of the shock-absorbing groove when viewed from above.

[0012] Preferably, the retractable assembly includes a cavity rod embedded in the first mounting groove, and a partition plate arranged inside the cavity rod, the cavity rod is divided by the partition plate to form a pressure chamber and a telescopic groove, the top of the support rod is connected to the lower surface of the partition plate, and the outer side surface of the partition plate is in contact with the inner wall of the cavity rod.

[0013] Preferably, a return spring is provided inside the cavity rod, the return spring is sleeved on the outside of the support rod, and two ends of the return spring are respectively connected to the lower surface of the partition plate and the inner bottom end of the cavity rod.

[0014] Preferably, the pressurizing assembly is installed on the airbag at the top inside the second mounting groove, and an air pump is fixedly installed on the airbag at a position relative to the three cavity rods, a connecting pipe is fixedly installed on the air pump, a solenoid valve is fixedly installed on the connecting pipe, one end of the connecting pipe passes through the interior of the pressure chamber, and a signal receiver is fixedly installed on the inner wall of the second mounting groove.

[0015] Preferably, a sealing plate is provided at a position of the bottom of the base relative to the second mounting groove, bolts are threadedly sleeved on the sealing plate, and the sealing plate is detachably connected to the base via the bolts.

[0016] The utility model has the following beneficial effects:

[0017] 1. The landing gear with shock absorption function of the plant protection UAV is provided with a shock absorption component, so that the pulley can contact the ground when the body component lands. As the distance between the body component and the ground decreases, the ground will squeeze the pulley, causing it to drive the connecting rod to move upward, and then the shock absorption spring will be compressed under the connection of the connecting plate to cause it to deform, thereby achieving the purpose of shock absorption and buffering, solving the problem that shock absorption cannot be performed during landing in the prior art.

[0018] 2. The plant protection UAV uses a landing gear with a shock absorbing function. By setting a driving assembly and a retracting assembly, the shock absorbing assembly can be stored inside the first mounting groove when the body assembly is in a flight state, thereby reducing the wind resistance of the body assembly during flight. When landing, compressed air is injected into the pressure chamber through the driving assembly, so that the partition plate moves downward under the pressure of the compressed air, and then the shock absorbing assembly moves downward to the outside of the bottom end extending out of the first mounting groove, so that shock absorption can be performed when the body assembly lands, solving the problem of large wind resistance affecting the flight speed in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 2 It is a schematic diagram of the side cross-sectional structure of the utility model.

[0021] Figure 3 It is a schematic diagram of the structure of the utility model when viewed from above.

[0022] Figure 4 For this utility model Figure 2 Schematic diagram of the structure at point A in the middle.

[0023] Figure 5 For this utility model Figure 2 Schematic diagram of the structure at point B in the middle.

[0024] In the figure: 100, body assembly; 200, shock-absorbing and retractable assembly; 300, driving assembly;

[0025] 101. base; 102. fuselage; 103. propeller;

[0026] 201, first installation slot; 202, shock absorbing assembly; 203, retractable assembly;

[0027] 2021, support rod; 2022, shock absorbing groove; 2023, shock absorbing spring; 2024, connecting plate; 2025, connecting rod; 2026, pulley;

[0028] 2031, cavity rod; 2032, partition plate; 2033, pressure chamber; 2034, telescopic slot; 2035, return spring;

[0029] 301, second mounting slot; 302, pressurizing assembly;

[0030] 3011, sealing plate; 3012, bolt;

[0031] 3021. air bag; 3022. air pump; 3023. connecting pipe; 3024. solenoid valve; 3025. signal receiver. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Embodiment 1

[0034] See also Figure 1-Figure 4 A landing gear with a shock-absorbing function for a crop protection UAV includes a body component 100 and a shock-absorbing retractable component 200. The body component 100 includes a base 101, a body 102 installed on the base 101, and a propeller 103 installed on the body 102; the shock-absorbing retractable component 200 includes a first mounting groove 201 opened at the bottom of the base 101, and a shock-absorbing component 202 installed inside the first mounting groove 201; the number of the shock-absorbing retractable components 200 is three, and the three shock-absorbing retractable components 200 are arranged in a herringbone shape; by arranging the shock-absorbing component 202, a buffering effect can be played when the body component 100 lands, and by arranging the three shock-absorbing retractable components 200 in a herringbone shape, the stability of the body component 100 when landing can be increased.

[0035] Furthermore, the shock absorbing assembly 202 includes a support rod 2021 arranged inside the first mounting groove 201, and a shock absorbing groove 2022 opened inside the support rod 2021, a shock absorbing spring 2023 and a connecting plate 2024 are arranged inside the shock absorbing groove 2022, a connecting rod 2025 is fixedly connected to the bottom of the connecting plate 2024, a pulley 2026 is fixedly installed on the bottom of the connecting rod 2025, and two ends of the shock absorbing spring 2023 are respectively connected to the inner top end of the shock absorbing groove 2022 and the upper surface of the connecting plate 2024; a through groove is opened on the lower surface of the support rod 2021 relative to the position of the connecting rod 2025, the connecting rod 2025 is movably sleeved inside the through groove, the bottom of the connecting rod 2025 passes through the outer side of the bottom end of the support rod 2021, and the cross-sectional area value of the through groove when viewed from above is smaller than the cross-sectional area value of the shock absorbing groove 2022 when viewed from above.

[0036] In this embodiment, when the body assembly 100 descends, the pulley 2026 contacts the ground. As the distance between the body assembly 100 and the ground decreases, the ground squeezes the pulley 2026, causing the connecting rod 2025 to move upward, and then the shock absorbing spring 2023 is compressed under the connection of the connecting plate 2024, causing the shock absorbing spring 2023 to deform, thereby achieving the purpose of shock absorption and buffering.

[0037] It should also be noted that a plurality of guide blocks are equidistantly arranged on the outer side surface of the connecting plate 2024, and a guide groove compatible with the plurality of guide blocks is provided on the inner wall of the shock absorbing groove 2022 relative to the longitudinal movement trajectory of the connecting plate 2024. In this way, the connecting plate 2024 and the connecting rod 2025 can move vertically, thereby increasing the stability of the pulley 2026 when moving up and down.

[0038] Embodiment 2

[0039] The second embodiment is an improvement made on the basis of the first embodiment. The difference from the first embodiment is that Figure 1-Figure 5 The landing gear with shock absorption function for the crop protection drone also includes a driving assembly 300 and a retractable assembly 203 arranged inside the first installation groove 201. The driving assembly 300 includes a second installation groove 301 opened at the bottom of the base 101, and a pressurizing assembly 302 arranged inside the second installation groove 301; the retractable assembly 203 includes a cavity rod 2031 embedded and installed inside the first installation groove 201, and a partition plate 2032 arranged inside the cavity rod 2031. The cavity rod 2031 is divided by the partition plate 2032 to form a pressure chamber 2033 and a telescopic groove 2034. The top of the support rod 2021 is in contact with the lower surface of the partition plate 2032. The outer side surface of the partition plate 2032 is fitted with the inner wall of the cavity rod 2031. By setting the driving component 300 and the retracting component 203, the shock absorbing component 202 can be stored inside the first mounting groove 201 when the body component 100 is in flight, thereby reducing the wind resistance of the body component 100 during flight. When landing, compressed air is injected into the pressure chamber 2033 through the driving component 300, so that the partition plate 2032 moves downward under the pressure of the compressed air, and then the shock absorbing component 202 moves downward to the outside of the bottom end extending out of the first mounting groove 201, so that shock absorption can be performed when the body component 100 lands.

[0040] Furthermore, a return spring 2035 is provided inside the cavity rod 2031, and the return spring 2035 is sleeved on the outer side of the support rod 2021. The two ends of the return spring 2035 are respectively connected to the lower surface of the partition plate 2032 and the inner bottom end of the cavity rod 2031. After takeoff, the compressed air in the pressure chamber 2033 is extracted. At this time, under the action of the return force of the return spring 2035, the partition plate 2032 and the shock absorbing assembly 202 can automatically move upward to be stored in the first mounting groove 201, thereby reducing wind resistance during flight.

[0041] Furthermore, the pressurizing component 302 is installed on the airbag 3021 at the top end inside the second installation groove 301, and the air pump 3022 is fixedly installed on the airbag 3021 at the position relative to the three cavity rods 2031, and a connecting pipe 3023 is fixedly installed on the air pump 3022, and a solenoid valve 3024 is fixedly installed on the connecting pipe 3023. One end of the connecting pipe 3023 passes through the interior of the pressure chamber 2033, and a signal receiver 3025 is fixedly installed on the inner wall of the second installation groove 301. When compressed air is injected into the pressure chamber 2033, the signal receiver 3025 is controlled by the controller, and then the air pump 3022 corresponding to the pressure chamber 2033 is opened accordingly. Under the action of the connecting pipe 3023, the compressed air inside the airbag 3021 can be introduced into the interior of the pressure chamber 2033, and then the solenoid valve 3024 can be closed.

[0042] It should also be noted that a sealing plate 3011 is provided at the bottom of the base 101 relative to the second mounting groove 301, and a bolt 3012 is threadedly sleeved on the sealing plate 3011. The sealing plate 3011 is detachably connected to the base 101 via the bolt 3012. By such a setting, the second mounting groove 301 can be sealed and fixed.

[0043] In addition, a plurality of limit blocks are equidistantly arranged on the outer side surface of the partition plate 2032, and a limit groove is provided on the inner wall of the cavity rod 2031 relative to the longitudinal movement trajectory of the plurality of limit blocks. By such an arrangement, the stability of the partition plate 2032 when moving up and down can be increased, thereby increasing the stability of the retractable component 203 in the telescopic state.

[0044] The rest of the structure is the same as that of the first embodiment.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0046] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A landing gear with shock absorption function for a plant protection UAV, characterized in that: include, A machine body assembly (100), comprising a base (101), a machine body (102) mounted on the base (101), and a propeller (103) mounted on the machine body (102); A shock-absorbing and retractable assembly (200), comprising a first installation groove (201) provided at the bottom of the base (101), and a shock-absorbing assembly (202) and a retractable assembly (203) installed inside the first installation groove (201); The driving assembly (300) comprises a second installation groove (301) opened at the bottom of the base (101), and a pressurizing assembly (302) arranged inside the second installation groove (301).

2. The landing gear with shock absorption function for the plant protection UAV according to claim 1 is characterized in that: The number of the shock-absorbing and retractable components (200) is three, and the three shock-absorbing and retractable components (200) are arranged in a herringbone shape.

3. The landing gear with shock absorption function for the plant protection UAV according to claim 1 is characterized in that: The shock absorbing assembly (202) comprises a support rod (2021) arranged inside the first installation groove (201), and a shock absorbing groove (2022) opened inside the support rod (2021); a shock absorbing spring (2023) and a connecting plate (2024) are arranged inside the shock absorbing groove (2022); a connecting rod (2025) is fixedly connected to the bottom of the connecting plate (2024); a pulley (2026) is fixedly installed on the bottom of the connecting rod (2025); and two ends of the shock absorbing spring (2023) are respectively connected to the inner top end of the shock absorbing groove (2022) and the upper surface of the connecting plate (2024).

4. The landing gear with shock absorption function for the plant protection UAV according to claim 3 is characterized in that: A through groove is provided on the lower surface of the support rod (2021) at a position relative to the connecting rod (2025); the connecting rod (2025) is movably sleeved inside the through groove; the bottom of the connecting rod (2025) penetrates the outer side of the bottom end of the support rod (2021); and the cross-sectional area value of the through groove when viewed from above is smaller than the cross-sectional area value of the shock-absorbing groove (2022) when viewed from above.

5. The landing gear with shock absorption function for the plant protection UAV according to claim 3 is characterized in that: The retractable assembly (203) includes a cavity rod (2031) embedded in the first installation groove (201), and a partition plate (2032) arranged inside the cavity rod (2031), the cavity rod (2031) is divided by the partition plate (2032) to form a pressure chamber (2033) and a telescopic groove (2034), the top of the support rod (2021) is connected to the lower surface of the partition plate (2032), and the outer side surface of the partition plate (2032) is in contact with the inner wall of the cavity rod (2031).

6. The landing gear with shock absorption function for the plant protection UAV according to claim 5 is characterized in that: A return spring (2035) is arranged inside the cavity rod (2031), and the return spring (2035) is sleeved on the outside of the support rod (2021), and the two ends of the return spring (2035) are respectively connected to the lower surface of the partition plate (2032) and the inner bottom end of the cavity rod (2031).

7. The landing gear with shock absorption function for the plant protection UAV according to claim 5 is characterized in that: The pressurizing component (302) is installed on the airbag (3021) at the top end inside the second installation groove (301), and an air pump (3022) is fixedly installed on the airbag (3021) at a position relative to the three cavity rods (2031), and a connecting pipe (3023) is fixedly installed on the air pump (3022), and a solenoid valve (3024) is fixedly installed on the connecting pipe (3023), one end of the connecting pipe (3023) passes through the interior of the pressure chamber (2033), and a signal receiver (3025) is fixedly installed on the inner wall of the second installation groove (301).

8. The landing gear with shock absorption function for the plant protection UAV according to claim 7 is characterized in that: A sealing plate (3011) is provided at a position of the bottom of the base (101) relative to the second mounting groove (301), a bolt (3012) is threadedly sleeved on the sealing plate (3011), and the sealing plate (3011) is detachably connected to the base (101) via the bolt (3012).

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