Undercarriage for surveying and mapping unmanned aerial vehicle

Abstract

The utility model relates to the technical field of unmanned aerial vehicle undercarriages, and provides an undercarriage for a surveying and mapping unmanned aerial vehicle, which comprises an undercarriage, pulleys are arranged at the bottom of the undercarriage, a mounting plate is arranged at the bottom of the undercarriage, and a buffer device is arranged at the top of the undercarriage; the buffering device comprises a sliding groove, the sliding groove is formed in the top of the undercarriage, and a first sliding block is slidably connected into the sliding groove. By means of the technical scheme, the problems that in the prior art, through movement of a mounting plate and cooperation of a rotating rod, a connecting block, a first buffering spring and other assemblies in a buffering device, a first sliding block and a second sliding block are separated towards the two sides in a sliding groove, and when a first supporting rod and a second supporting rod are separated towards the two sides, a first buffering spring and a second buffering spring are squeezed; therefore, force transmitted from the first supporting rod and the second supporting rod can be buffered and dispersed through the first buffering spring and the second buffering spring, and damage to a machine body and key assemblies can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) landing gear technology, specifically to a landing gear for a surveying UAV. Background Technology

[0002] The landing gear of a surveying drone is a crucial part of its design. It not only supports the drone's landing but also protects the fuselage and critical components from damage. Surveying drones typically require well-designed landing gear to cope with different ground conditions, ensure stable landings, and safeguard precision equipment.

[0003] According to a public announcement (announcement number: CN214356657U), a landing gear for a topographic mapping UAV includes a base rod, a mounting plate, and a fixing rod. The UAV body is mounted on the top of the mounting plate. A second shock-absorbing mechanism is provided between the mounting plate and the base rod. The second shock-absorbing mechanism includes a first sliding rod and two first springs. The two first springs are respectively sleeved on both ends of the first sliding rod. One end of each of the two first springs is fixedly connected to the first sliding rod, and the other end of each of the two first springs is provided with a sliding block. A first hinge rod and a second hinge rod are respectively hinged to the two sliding blocks. The first shock-absorbing mechanism is provided between the base rod and the fixing rod. A movable wheel is provided at the bottom end of the fixing rod. This utility model effectively avoids the phenomenon of UAVs being unable to fly due to collisions, extends the service life of UAVs, and has a stable structure.

[0004] The aforementioned application uses a base rod, mounting plate, and fixing rod, with the UAV body component mounted on the top of the mounting plate. This allows for shock absorption of the fuselage but not cushioning, which may cause damage to the fuselage and critical components due to the force of gravity during descent. Therefore, we propose a landing gear for a mapping UAV. Utility Model Content

[0005] This utility model proposes a landing gear for surveying drones, which solves the problems mentioned in the above documents.

[0006] The technical solution of this utility model is as follows: it includes a landing gear, a pulley is provided at the bottom of the landing gear, a mounting plate is provided at the bottom of the landing gear, and a buffer device is provided at the top of the landing gear;

[0007] The buffer device includes a slide groove located at the top of the landing gear. A slider is slidably connected inside the slide groove. A rotating shaft is fixedly connected to the top of the slider. A support rod is rotatably connected to the circumferential surface of the rotating shaft. A rotating rod is rotatably connected to the top of the support rod. A connecting block is fixedly connected to the circumferential surface of the rotating rod. The top of the connecting block is fixedly connected to the bottom of the mounting plate. A buffer spring is fixedly connected inside the slide groove. The end of the buffer spring away from the slide groove is fixedly connected to the front side of the slider.

[0008] The slide groove has a sliding block two connected inside. The top of the sliding block two is fixedly connected to a rotating shaft two. The circumferential surface of the rotating shaft two is rotatably connected to a support rod two. The top of the support rod two is rotatably connected to the circumferential surface of the rotating shaft two. The slide groove has a buffer spring two fixedly connected inside. The end of the buffer spring two away from the slide groove is fixedly connected to the back side of the sliding block two. The function of the buffer spring two is to buffer and disperse the force transmitted from the support rod two.

[0009] A tension spring is fixedly connected to the back side of the first support rod. The end of the tension spring away from the first support rod is fixedly connected to the front side of the second support rod. The function of the tension spring is to reduce the movement speed of the first and second support rods.

[0010] A fixing block is fixedly connected to the bottom of the mounting plate, a rotating shaft is fixedly connected to the bottom of the fixing block, a connecting rod is rotatably connected to the circumferential surface of the rotating shaft, a rotating shaft three is rotatably connected to the bottom of the connecting rod, and a slider three is fixedly connected to the circumferential surface of the rotating shaft three. The function of the connecting rod is to disperse the downward force to the left and right.

[0011] A support plate is fixedly connected to the side of the landing gear, and a slide rail is provided on the top of the support plate. The top of the slider three is slidably connected to the inside of the slide rail, and a spring is fixedly connected inside the slide rail. The end of the spring that is away from the slide rail is fixedly connected to the side of the slider three. The function of the spring is to buffer and reduce the force transmitted by the connecting rod.

[0012] The number of each of the following components—slide groove, slider one, rotating shaft one, support rod one, rotating rod, connecting block, buffer spring one, slider two, rotating shaft two, support rod two, buffer spring two, tension spring, connecting rod, rotating shaft three, and slider three—is set to two, and they are symmetrical to each other along the vertical central axis of the mounting plate. The purpose of setting each of these components to two, and symmetrical to each other along the vertical central axis of the mounting plate, is to disperse the force in multiple directions.

[0013] The landing gear is equipped with a shock-absorbing device, which includes a positioning block. The side of the positioning block is fixedly connected to the inside of the slide groove, and a friction block is fixedly connected to the bottom of the positioning block. A movable groove is opened on the front side of the sliding block one. A sliding plate is fixedly connected to the inner wall of the movable groove. A support block is slidably connected to the top of the sliding plate. An inclined block is fixedly connected to the top of the support block. The function of the inclined block is to rub against the friction block to slow down the movement speed of support rod one and support rod two.

[0014] A return spring is fixedly connected to the back side of the support block. The end of the return spring away from the support block is fixedly connected to the front side of the slide plate. The function of the return spring is to allow the inclined block to reset when the friction block stops pressing against it.

[0015] The number of positioning blocks, friction blocks, movable grooves, sliding plates, support blocks, inclined blocks, and return springs are set to several, and they are distributed along the four corners of the mounting plate. The purpose of setting the number of positioning blocks, friction blocks, movable grooves, sliding plates, support blocks, inclined blocks, and return springs to several, and distributing them along the four corners of the mounting plate, is to perform frictional deceleration on multiple support rods one and support rod two.

[0016] The friction block and the inclined block are shaped as inclined planes, and the side sections of the friction block and the inclined block are inclined planes. The back side of the friction block is located on the displacement trajectory of the inclined block. The purpose of setting the shape of the friction block and the inclined block as inclined planes and the side sections of the friction block and the inclined block as inclined planes is to allow the inclined block and the friction block to rub against each other.

[0017] The working principle and beneficial effects of this utility model are as follows:

[0018] 1. In this utility model, through the movement of the mounting plate and the cooperation of components such as the sliding groove, slider one, rotating shaft one, support rod one, rotating rod, connecting block, and buffer spring one inside the buffer device, the downward force is transmitted from the mounting plate to support rod one and support rod two through the connecting block and rotating rod. When support rod one and support rod two are subjected to downward pressure, they are separated to both sides by slider one and slider two in the sliding groove through the rotating rod, rotating shaft one and rotating shaft two. When support rod one and support rod two separate to both sides, they compress buffer spring one and buffer spring two, thereby buffering and dispersing the force transmitted from support rod one and support rod two, thus reducing damage to the machine body and key components.

[0019] 2. In this utility model, through the movement of slider one and slider two and the cooperation of components such as positioning block, friction block, movable groove, sliding plate, support block, inclined block, and return spring inside the shock absorption device, slider one and slider two move, which drives the support block to move. When the support block moves, it drives the inclined block to move. When the inclined block moves, its inclined surface touches the inclined surface of the friction block. When the inclined surface of the inclined block touches the inclined surface of the friction block, friction is generated between the inclined surface of the inclined block and the inclined surface of the friction block, thereby slowing down the movement speed of slider one and slider two and preventing the vibration caused by excessive movement from damaging the machine body and key components. Attached Figure Description

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] Figure 1 This is a three-dimensional appearance structure diagram of the present utility model;

[0022] Figure 2 This is a three-dimensional overall structural diagram of the buffer device of this utility model;

[0023] Figure 3 This is a three-dimensional overall structural diagram of the shock absorption device of this utility model;

[0024] Figure 4 This utility model Figure 2 A three-dimensional magnified structural diagram of A in the middle;

[0025] Figure 5 This utility model Figure 3 A three-dimensional magnified structural diagram of B.

[0026] In the diagram: 1. Landing gear; 2. Pulley; 3. Mounting plate; 4. Buffer device; 41. Slide rail; 42. Slider 1; 43. Rotating shaft 1; 44. Support rod 1; 45. Rotating rod; 46. Connecting block; 47. Buffer spring 1; 48. Slider 2; 49. Rotating shaft 2; 410. Support rod 2; 411. Buffer spring 2; 412. Tension spring; 413. Fixing block; 414. Rotating shaft; 415. Connecting rod; 416. Rotating shaft 3; 417. Slider 3; 418. Support plate; 419. Slide rail; 420. Elastic spring; 5. Shock absorption device; 51. Positioning block; 52. Friction block; 53. Movable groove; 54. Slide plate; 55. Support block; 56. Inclined block; 57. Return spring. Detailed Implementation

[0027] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0028] Example 1

[0029] like Figures 1-5 As shown, this embodiment proposes a landing gear for a surveying UAV, including a landing gear 1, a pulley 2 at the bottom of the landing gear 1, a mounting plate 3 at the bottom of the landing gear 1, and a buffer device 4 at the top of the landing gear 1.

[0030] The buffer device 4 includes a slide 41, which is located on the top of the landing gear 1. A slider 42 is slidably connected inside the slide 41. A rotating shaft 43 is fixedly connected to the top of the slider 42. A support rod 44 is rotatably connected to the circumferential surface of the rotating shaft 43. A rotating rod 45 is rotatably connected to the top of the support rod 44. A connecting block 46 is fixedly connected to the circumferential surface of the rotating rod 45. The top of the connecting block 46 is fixedly connected to the bottom of the mounting plate 3. A buffer spring 47 is fixedly connected inside the slide 41. The end of the buffer spring 47 away from the slide 41 is fixedly connected to the front side of the slider 42.

[0031] The slide groove 41 has a sliding block 48 inside, and a rotating shaft 49 is fixedly connected to the top of the sliding block 48. A support rod 410 is rotatably connected to the circumferential surface of the rotating shaft 49. The top of the support rod 410 is rotatably connected to the circumferential surface of the rotating rod 45. A buffer spring 411 is fixedly connected inside the slide groove 41. The end of the buffer spring 411 away from the slide groove 41 is fixedly connected to the back side of the sliding block 48. The function of the buffer spring 411 is to buffer and disperse the force transmitted from the support rod 410.

[0032] A tension spring 412 is fixedly connected to the back side of support rod 44. The end of tension spring 412 away from support rod 44 is fixedly connected to the front side of support rod 410. The function of tension spring 412 is to reduce the movement speed of support rod 44 and support rod 410.

[0033] A fixing block 413 is fixedly connected to the bottom of the mounting plate 3. A rotating shaft 414 is fixedly connected to the bottom of the fixing block 413. A connecting rod 415 is rotatably connected to the circumferential surface of the rotating shaft 414. A rotating shaft 416 is rotatably connected to the bottom of the connecting rod 415. A slider 417 is fixedly connected to the circumferential surface of the rotating shaft 416. The function of the connecting rod 415 is to disperse the downward force to the left and right.

[0034] A support plate 418 is fixedly connected to the side of the landing gear 1. A slide rail 419 is provided on the top of the support plate 418. The top of the slider 3 417 is slidably connected to the inside of the slide rail 419. A spring spring 420 is fixedly connected inside the slide rail 419. The end of the spring spring 420 away from the slide rail 419 is fixedly connected to the side of the slider 3 417. The function of the spring spring 420 is to buffer and reduce the force transmitted from the connecting rod 415.

[0035] The number of slide groove 41, slider 1 42, rotating shaft 1 43, support rod 1 44, rotating rod 45, connecting block 46, buffer spring 1 47, slider 2 48, rotating shaft 2 49, support rod 2 410, buffer spring 2 411, tension spring 412, connecting rod 415, rotating shaft 3 416, and slider 3 417 are each set to two, and are symmetrical to each other along the vertical central axis of the mounting plate 3. The purpose of setting the number of slide groove 41, slider 1 42, rotating shaft 1 43, support rod 1 44, rotating rod 45, connecting block 46, buffer spring 1 47, slider 2 48, rotating shaft 2 49, support rod 2 410, buffer spring 2 411, tension spring 412, connecting rod 415, rotating shaft 3 416, and slider 3 417 to two, and being symmetrical to each other along the vertical central axis of the mounting plate 3, is to disperse the force in multiple directions.

[0036] In this embodiment, the drone is first mounted on the mounting plate 3. When the drone lands, the descent force is transmitted from the mounting plate 3 to the support rod 44 and the second support rod 410 via the connecting block 46 and the rotating rod 45. When the support rod 44 and the second support rod 410 are subjected to a downward pressure, they are separated to both sides in the slide groove 41 by the rotating rod 45, the rotating shaft 43, and the rotating shaft 49, using the slider 42 and the slider 48. When the support rod 44 and the second support rod 410 are separated to both sides, they will compress the buffer spring 47 and the buffer spring 411, thereby allowing the support rod 44 and the second support rod 410 to move apart. The transmitted force is buffered and dispersed by buffer spring 47 and buffer spring 411, thereby reducing damage to the fuselage and key components. At the same time, the downward force is also transmitted to the fixing block 413 through the mounting plate 3, and then transmitted to the connecting rod 415 through the rotating shaft 414 by the fixing block 413. When the connecting rod 415 is subjected to downward pressure, the two connecting rods 415 are separated to both sides along the slide rail 419 by the rotating shaft 416 and the slider 417. When the connecting rods 415 are separated to both sides, they will compress the elastic spring 420, which will then buffer and disperse the downward force.

[0037] Example 2

[0038] like Figures 1-5As shown, based on the same concept as Embodiment 1 above, a second embodiment is also proposed. The landing gear 1 is provided with a shock-absorbing device 5. The shock-absorbing device 5 includes a positioning block 51. The side of the positioning block 51 is fixedly connected to the inside of the slide groove 41. The bottom of the positioning block 51 is fixedly connected to a friction block 52. The front side of the slider 1 42 is provided with a movable groove 53. The inner wall of the movable groove 53 is fixedly connected to a sliding plate 54. The top of the sliding plate 54 is slidably connected to a support block 55. The top of the support block 55 is fixedly connected to an inclined block 56. The function of the inclined block 56 is to rub against the friction block 52 to slow down the movement speed of the support rod 1 44 and the support rod 2 410.

[0039] A return spring 57 is fixedly connected to the back side of the support block 55. The end of the return spring 57 away from the support block 55 is fixedly connected to the front side of the slide plate 54. The function of the return spring 57 is to allow the inclined block 56 to be reset when the friction block 52 stops pressing the inclined block 56.

[0040] The number of positioning blocks 51, friction blocks 52, movable grooves 53, sliding plates 54, support blocks 55, inclined blocks 56, and return springs 57 are set to several, and they are distributed along the four corners of the mounting plate 3. The purpose of setting the number of positioning blocks 51, friction blocks 52, movable grooves 53, sliding plates 54, support blocks 55, inclined blocks 56, and return springs 57 to several, and distributing them along the four corners of the mounting plate 3, is to perform frictional deceleration on multiple support rods 44 and 410.

[0041] The friction block 52 and the inclined block 56 are shaped as inclined planes, and the side sections of the friction block 52 and the inclined block 56 are inclined planes. The back side of the friction block 52 is located on the displacement trajectory of the inclined block 56. The purpose of the friction block 52 and the inclined block 56 being shaped as inclined planes and the side sections of the friction block 52 and the inclined block 56 being inclined planes is so that the inclined block 56 and the friction block 52 can rub against each other.

[0042] In this embodiment, the movement of slider 1 42 and slider 2 48 can drive the shock absorption device 5. When slider 1 42 and slider 2 48 move, they will drive the support block 55 to move. When the support block 55 moves, it will drive the inclined block 56 to move. When the inclined block 56 moves, its inclined surface will touch the inclined surface of the friction block 52. When the inclined surface of the inclined block 56 touches the inclined surface of the friction block 52, the inclined surface of the inclined block 56 will rub against the inclined surface of the friction block 52, thereby slowing down the movement speed of slider 1 42 and slider 2 48 and preventing the vibration caused by excessive movement from damaging the machine body and key components.

[0043] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A landing gear for a surveying unmanned aerial vehicle, characterized in that, Includes landing gear (1), with pulleys (2) provided at the bottom of the landing gear (1), mounting plate (3) provided at the bottom of the landing gear (1), and a buffer device (4) provided at the top of the landing gear (1). The buffer device (4) includes a slide groove (41), which is located on the top of the landing gear (1). A slider (42) is slidably connected inside the slide groove (41). A rotating shaft (43) is fixedly connected to the top of the slider (42). A support rod (44) is rotatably connected to the circumferential surface of the rotating shaft (43). A rotating rod (45) is rotatably connected to the top of the support rod (44). A connecting block (46) is fixedly connected to the circumferential surface of the rotating rod (45). The top of the connecting block (46) is fixedly connected to the bottom of the mounting plate (3). A buffer spring (47) is fixedly connected inside the slide groove (41). The end of the buffer spring (47) away from the slide groove (41) is fixedly connected to the front side of the slider (42).

2. The landing gear for a surveying UAV according to claim 1, characterized in that, The slide groove (41) is slidably connected to a second slider (48). The top of the second slider (48) is fixedly connected to a second rotating shaft (49). The circumferential surface of the second rotating shaft (49) is rotatably connected to a second support rod (410). The top of the second support rod (410) is rotatably connected to the circumferential surface of the rotating rod (45). The slide groove (41) is fixedly connected to a second buffer spring (411). The end of the second buffer spring (411) away from the slide groove (41) is fixedly connected to the back side of the second slider (48).

3. The landing gear for a surveying UAV according to claim 2, characterized in that, A tension spring (412) is fixedly connected to the back side of the first support rod (44), and the end of the tension spring (412) away from the first support rod (44) is fixedly connected to the front side of the second support rod (410).

4. The landing gear for a surveying UAV according to claim 3, characterized in that, The bottom of the mounting plate (3) is fixedly connected to a fixing block (413), the bottom of the fixing block (413) is fixedly connected to a rotating shaft (414), the circumferential surface of the rotating shaft (414) is rotatably connected to a connecting rod (415), the bottom of the connecting rod (415) is rotatably connected to a rotating shaft three (416), and the circumferential surface of the rotating shaft three (416) is fixedly connected to a slider three (417).

5. The landing gear for a surveying UAV according to claim 4, characterized in that, A support plate (418) is fixedly connected to the side of the landing gear (1). A slide rail (419) is provided on the top of the support plate (418). The top of the slider three (417) is slidably connected to the inside of the slide rail (419). A spring spring (420) is fixedly connected to the inside of the slide rail (419). The end of the spring spring (420) away from the slide rail (419) is fixedly connected to the side of the slider three (417).

6. The landing gear for a surveying UAV according to claim 5, characterized in that, The number of the slide (41), slider one (42), rotating shaft one (43), support rod one (44), rotating rod (45), connecting block (46), buffer spring one (47), slider two (48), rotating shaft two (49), support rod two (410), buffer spring two (411), tension spring (412), connecting rod (415), rotating shaft three (416) and slider three (417) are each set to two, and are symmetrical to each other along the vertical central axis of the mounting plate (3).

7. The landing gear for a surveying UAV according to claim 6, characterized in that, The landing gear (1) is equipped with a shock-absorbing device (5). The shock-absorbing device (5) includes a positioning block (51). The side of the positioning block (51) is fixedly connected to the inside of the slide groove (41). The bottom of the positioning block (51) is fixedly connected to a friction block (52). The front side of the slider (42) is provided with a movable groove (53). The inner wall of the movable groove (53) is fixedly connected to a sliding plate (54). The top of the sliding plate (54) is slidably connected to a support block (55). The top of the support block (55) is fixedly connected to an inclined block (56).

8. The landing gear for a surveying UAV according to claim 7, characterized in that, A reset spring (57) is fixedly connected to the back side of the support block (55), and the end of the reset spring (57) away from the support block (55) is fixedly connected to the front side of the slide plate (54).

9. The landing gear for a surveying unmanned aerial vehicle according to claim 8, characterized in that, The number of the positioning block (51), friction block (52), movable groove (53), sliding plate (54), support block (55), inclined block (56) and reset spring (57) is set to several, and they are distributed along the four corners of the mounting plate (3).

10. A landing gear for a surveying unmanned aerial vehicle according to claim 9, characterized in that, The friction block (52) and the inclined block (56) are shaped as inclined surfaces, and the side sections of the friction block (52) and the inclined block (56) are inclined surfaces. The back side of the friction block (52) is located on the displacement trajectory of the inclined block (56).

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