Unmanned aerial vehicle undercarriage for crane detection

Abstract

The utility model relates to an unmanned aerial vehicle undercarriage for crane detection, which comprises a mounting seat, two moving blocks, a moving block buffer mechanism, a retractable mechanism, a support leg and a support leg buffer mechanism, a mounting groove is arranged on one side of the mounting seat close to the ground, the two ends of the mounting groove are respectively connected with the moving blocks in a sliding manner, and the retractable mechanism is connected with the support leg buffer mechanism. A moving block buffer mechanism is mounted on one side, close to each other, of the two moving blocks; mounting plates are arranged on the two sides, in the extending direction of the mounting base, of the moving block, the folding and unfolding mechanisms are mounted on the mounting plates and connected with the supporting legs, and the supporting leg buffering mechanisms are mounted in the supporting legs. Compared with the prior art, the unmanned aerial vehicle landing gear supporting leg has the advantages that the moving block buffering mechanism, the folding and unfolding mechanism and the supporting leg buffering mechanism are matched with other parts, folding and unfolding of the unmanned aerial vehicle landing gear supporting leg and buffering during landing are achieved, impact force can be better absorbed, and the problem that the unmanned aerial vehicle landing gear supporting leg is prone to being damaged due to the fact that the connecting position is weak is solved; and the limiting blocks are matched with the limiting grooves, so that the heights of the supporting legs of the unmanned aerial vehicle are the same.

Description

Technical Field

[0001] The utility model relates to a drone landing gear, in particular to a drone landing gear for crane detection. Background Art

[0002] A drone is an unmanned aircraft controlled by a radio remote control device and a self-contained program control device. There is no cockpit on board, but it is equipped with autopilot, program control device, signal acquisition device and other equipment. Personnel on the ground, on ships or at the remote control station of the mother aircraft use radar and other equipment to track, locate, remotely control, telemeter and digitally transmit it. It can take off like a normal aircraft or be launched into the air with a booster rocket under radio remote control, or it can be carried into the air by the mother aircraft for flight. At present, drones have been widely used in meteorology, agriculture, exploration, photography, disaster prevention and mitigation, crop yield estimation, drug control and anti-smuggling, border patrol, public security and anti-terrorism and other fields.

[0003] The landing gear of a drone is an important part of a drone. It is mainly used to support and protect the drone's fuselage and control the drone's driving and take-off and landing on the ground. The landing gear of a drone is generally fixed at the bottom of the drone's fuselage to support the drone's fuselage upwards. It is an important component that can ensure the drone's safe landing and take-off stability. The existing drone landing gear is fixed at the bottom of the drone. The landing gear cannot be recovered, which will affect the drone's entry into a small space and may block the drone's components such as the camera. During the drone's landing process, under the action of the drone's inertia, the drone's landing gear needs to withstand the corresponding impact, which can easily cause damage to the drone.

[0004] After searching, the authorization announcement number CN216546686U discloses a landing gear device for engineering surveying drones, which specifically discloses: including a drone body, a connecting plate fixedly connected to the bottom of the drone body, movable blocks at both ends of the bottom of the connecting plate, a first rotating plate rotatably connected to the bottom of the movable block, and a second rotating plate rotatably connected to the bottom of the first rotating plate. However, the existing technology cannot retract or extend the landing gear.

[0005] In summary, how to design a retractable landing gear with a buffer function is a technical problem that needs to be solved. Utility Model Content

[0006] The purpose of the utility model is to provide a UAV landing gear for crane inspection in order to overcome the defect that the landing gear in the prior art cannot be retracted.

[0007] The purpose of the utility model can be achieved through the following technical solutions:

[0008] According to one aspect of the utility model, there is provided a UAV landing gear for crane inspection, comprising a mounting seat, a moving block, a moving block buffer mechanism, a retracting mechanism, a support leg and a support leg buffer mechanism, wherein a mounting groove is provided on a side of the mounting seat close to the ground, the moving block is divided into two pieces, both ends of the mounting groove are respectively slidably connected to the moving blocks, and a moving block buffer mechanism is installed on a side close to the two moving blocks; mounting plates are provided on both sides of the moving block along the extension direction of the mounting seat, the retracting mechanism is installed on the mounting plate and connected to the support leg, and a support leg buffer mechanism is installed in the support leg.

[0009] As a preferred technical solution, the retracting and extending mechanism includes a motor, a power gear, a driven gear and a connecting rod mechanism, and the mounting plates on both sides are a first mounting plate and a second mounting plate; the motor is mounted on the first mounting plate and its output shaft passes through the first mounting plate and is connected to the power gear, the driven gear is rotatably connected to the first mounting plate and meshes with the power gear; the connecting rod mechanism connects the power gear and one end of the support leg.

[0010] As a preferred technical solution, the connecting rod mechanism includes a mounting rod, a pulling rod and a connecting rod, the driven gear and one end of the pulling rod are fixedly connected, and the other end of the pulling rod, the connecting rod and the mounting rod are rotationally connected in sequence; one end of the supporting leg and the end where the mounting rod is connected to the connecting rod are fixedly connected, and the end of the moving block where the buffer mechanism is installed is provided with a mounting block, and the other end of the mounting rod is rotationally connected to the mounting block.

[0011] As a preferred technical solution, the pull rod includes a first pull rod and a second pull rod, and there are two connecting rods; one end of the first pull rod is fixedly connected to the driven gear, and the other end is connected to one end of a connecting rod; one end of the second pull rod is rotatably connected to the second mounting plate, and the other end is connected to one end of another connecting rod; the other ends of the two connecting rods are both rotatably connected to the mounting rod.

[0012] As a preferred technical solution, one end of the two connecting rods connected to the first pull rod and the second pull rod and the side away from the mounting rod is fixedly connected to a limiting plate.

[0013] As a preferred technical solution, the moving block buffer mechanism includes a buffer rod and a second spring, both ends of the buffer rod are slidably connected to the two moving blocks respectively, and the second spring is sleeved on the buffer rod.

[0014] As a preferred technical solution, the support leg includes an outer support leg, an inner support leg and a balance pole, one end of the inner support leg is installed on the outer support leg through a support leg buffer mechanism, and the other end is connected to the middle of the balance pole and is perpendicular to the balance pole.

[0015] As a preferred technical solution, the supporting leg buffer mechanism includes a fixed connecting plate and a first spring, a shock-absorbing groove is provided inside the end where the outer supporting leg and the inner supporting leg are connected, and a connecting groove is provided on the end face, the shock-absorbing groove and the connecting groove are connected, both are cylindrical and the diameter of the shock-absorbing groove is larger than the connecting groove, one end of the first spring is connected to the shock-absorbing groove, and the other end is connected to one side of the fixed connecting plate; the fixed connecting plate is disc-shaped, with a diameter larger than the connecting groove, located in the shock-absorbing groove to form a moving pair with the shock-absorbing groove, and the other side is connected to the inner supporting leg, and the diameter of the inner supporting leg is smaller than the diameter of the shock-absorbing groove.

[0016] As a preferred technical solution, limiting grooves are provided on both sides of the installation groove, limiting blocks are fixedly connected on both sides of the moving block, and the limiting blocks and the limiting grooves form a moving pair.

[0017] As a preferred technical solution, the mounting seat is provided with a mounting hole, and the drone is mounted on the mounting seat through the mounting hole.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1) The utility model realizes the retraction and extension of the support legs of the UAV landing gear and the buffering of the landing of the UAV landing gear by cooperating with other components through the moving block buffer mechanism, the retracting and extending mechanism and the support leg buffer mechanism. The double buffer structure composed of the moving block buffer mechanism and the support leg buffer mechanism can better absorb the impact force;

[0020] 2) The motor, power gear, driven gear, connecting rod mechanism and support leg of the retractable mechanism of the utility model are used in coordination. The motor drives the power gear to rotate, and the driven gear drives the connecting rod mechanism to move, so as to realize the recovery of the support leg. The motor rotates in the opposite direction to realize the lowering of the support leg, so as to prevent the landing gear of the drone from blocking the camera and other onboard equipment when the drone is working;

[0021] 3) The support leg buffer mechanism of the utility model realizes buffering through the first spring, the fixed connecting piece, the inner support leg and the outer support leg, and the moving block buffer mechanism realizes buffering through the buffer rod and the second spring. The two types of buffer mechanisms realize buffering at the connection points at both ends of the support legs, solving the problem of easy damage due to impact caused by weak connection points;

[0022] 4) The utility model has limit slots on both sides of the installation slot, and the limit blocks cooperate with the limit slots to limit the position of the moving block to ensure that the heights of the supporting legs of the drone are the same. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of a UAV landing gear for crane inspection in the utility model;

[0024] Figure 2 This is a half-section first-person perspective schematic diagram of a drone for crane inspection according to the utility model;

[0025] Figure 3 This is a schematic diagram of a half-section second viewing angle of a drone for crane inspection according to the utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the supporting leg buffer mechanism of the utility model;

[0027] The numbers in the figure show:

[0028] 1. Mounting seat, 2. Mounting slot, 3. Moving block, 4. Mounting plate, 5. Motor, 6. Power gear, 7. Driven gear, 8. First pull rod, 9. Second pull rod, 10. Mounting block, 11. Mounting rod, 12. Connecting rod, 13. Limiting plate, 14. Outer supporting leg, 15. Connecting slot, 16. Shock-absorbing slot, 17. Inner supporting leg, 18. Fixed plate, 19. First spring, 20. Balance bar, 21. Limiting slot, 22. Limiting block, 23. Buffer rod, 24. Second spring, 25. Mounting hole. DETAILED DESCRIPTION

[0029] 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 part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0030] like Figure 1 As shown, the utility model provides a UAV landing gear for crane inspection, including a mounting seat 1, a moving block 3, a moving block buffer mechanism, a retracting mechanism, a support leg and a support leg buffer mechanism.

[0031] like Figure 2 As shown, the mounting seat 1 is a rectangular plate-like structure, with mounting grooves 2 opened in sequence near the ground, and limit grooves 21 opened on both sides of the mounting groove 2. The moving block 3 is slidably connected to the mounting groove 2, and the limit blocks 22 are fixedly connected on both sides of the moving block 3. The limit blocks 22 and the limit grooves 21 cooperate to form a moving pair, and the limit blocks 22 limit the position of the moving block 3 to ensure that the height of the balance bars 20 on both sides is the same. The mounting groove 2 can be a groove with the same length as the mounting seat 1, or it can be two grooves opened from both ends and not connected to each other in the middle. The mounting seat 1 is also provided with a mounting hole 25, and the drone is installed on the mounting seat 1 through the mounting hole 25.

[0032] The moving block 3 is fixedly welded with mounting plates 4 perpendicular to the mounting seat 1 on both sides along the extension direction of the mounting seat 1. The mounting plates 4 on both sides are respectively the first mounting plate 4 and the second mounting plate 4. There are two moving blocks 3. When the mounting groove 2 is one groove, the two moving blocks 3 are installed on both sides of the mounting groove 2; when the mounting groove 2 is two grooves, the two moving blocks 3 are respectively installed in one groove. A mounting block 10 is provided at one end of the moving block 3 where the buffer mechanism is installed.

[0033] The moving block buffer mechanism includes a buffer rod 23 and a second spring 24. When the mounting slot 2 is a single slot, the two ends of the buffer rod 23 are respectively slidably connected to the two mounting blocks 10, the second spring 24 is sleeved on the outer surface of the buffer rod 23, and the two ends of the second spring 24 are respectively welded to the opposite sides of the two mounting blocks 10; when the mounting slot 2 is two slots, one end of the buffer rod 23 is fixedly connected to one end of the mounting slot 2, and the other end is slidably connected to the mounting block 10, the second spring 24 is sleeved on the outer surface of the buffer rod 23, one end of the second spring 24 is welded to one end of the mounting slot 2, and the other end is welded to the side of the mounting block 10 where the buffer rod 23 is installed. When the drone lands, it pushes the moving blocks 3 on both sides to move toward the opposite side, and the moving blocks 3 compress the second spring 24 to buffer the impact force of landing.

[0034] like Figure 3 As shown, the retracting and releasing mechanism includes a motor 5, a power gear 6, a driven gear 7 and a connecting rod mechanism, and the connecting rod mechanism includes a mounting rod 11, a first pull rod 8, a second pull rod 9 and a connecting rod 12. The motor 5 is mounted on the first mounting plate 4, and its output shaft passes through the first mounting plate 4 and is connected to the power gear 6. The driven gear 7 is rotatably connected to the first mounting plate 4 and meshes with the power gear 6; there are two connecting rods 12, one end of the first pull rod 8 is fixedly connected to the driven gear 7, and the other end is connected to one end of a connecting rod 12, one end of the second pull rod 9 is rotatably connected to the second mounting plate 4, and the other end is connected to one end of another connecting rod 12, the other ends of the two connecting rods 12 are both rotatably connected to the mounting rod 11, and the other end of the mounting rod 11 is rotatably connected to the mounting block 10, and the end of the mounting rod 11 connected to the connecting rod 12 is fixedly connected to one end of the outer support leg 14, so the other ends of the two connecting rods 12 can also be rotatably connected to the end of the outer support leg 14 without affecting the movement relationship of the connecting rod mechanism. There are two mounting rods 11, one end of which is connected to both sides of the mounting block 10 respectively, and the other end is fixedly connected to one end of the outer support leg 14. The end of the connecting rod 12 connected to the first pull rod 8 and the second pull rod 9 and the side away from the mounting rod 11 is fixedly connected to a limit plate 13, and the limit plate 13 limits the maximum angle of the outer support leg 14. The motor 5 drives the power gear 6 to rotate, the driven gear 7 drives the first pull rod 8 to rotate, the first pull rod 8 pulls the connecting rod 12 to rotate, and the other end of the connecting rod 12 drives the outer support leg 14 to rotate around the mounting rod 11, so as to realize the recovery of the outer support leg 14.

[0035] The supporting legs include an outer supporting leg 14, an inner supporting leg 17 and a balancing pole 20, all of which are cylindrical. One end of the inner supporting leg 17 is installed on the outer supporting leg 14 through a supporting leg buffer mechanism, and the other end is connected to the middle of the balancing pole 20 and is perpendicular to the balancing pole 20.

[0036] like Figure 4 As shown, the support leg buffer mechanism includes a fixed connecting piece and a first spring 19. A shock absorbing groove 16 is provided inside one end where the outer support leg 14 and the inner support leg 17 are connected, and a connecting groove 15 is provided on the end face. The shock absorbing groove 16 and the connecting groove 15 are connected, and both are cylindrical. The diameter of the shock absorbing groove 16 is larger than the connecting groove 15. One end of the first spring 19 is connected to the end of the shock absorbing groove 16 away from the connecting groove 15, and the other end is connected to one side of the fixed connecting piece. The fixed connecting piece is disc-shaped, with a diameter larger than the connecting groove 15, and is located in the shock absorbing groove 16 to form a moving pair with the shock absorbing groove 16. The other side of the fixed connecting piece is connected to the inner support leg 17, and the diameter of the inner support leg 17 is smaller than the connecting groove 15. The inner support leg 17 passes through the connecting groove 15. When the drone lands, the balance bar 20 pushes the fixed plate 18 to move along the shock absorbing groove 16, and the impact force of landing is buffered by compressing the first spring 19.

[0037] The working process of this utility model is as follows:

[0038] The motor 5 drives the power gear 6 to rotate, and the driven gear 7 drives the first pull rod 8 to rotate. The first pull rod 8 pulls the connecting rod 12 to rotate, and cooperates with the second pull rod 9 to pull the upper part of the other side of the connecting rod 12. The other end of the connecting rod 12 drives the outer support leg 14 to rotate around the mounting rod 11. The first pull rod 8, the second pull rod 9 and the connecting rod 12 rotate to a horizontal position to realize the recovery of the outer support leg 14. The motor 5 rotates in the opposite direction to realize the lowering of the outer support leg 14. When the UAV lands, the balance bar 20 pushes the fixing plate 18 to move along the shock absorbing groove 16, compressing the first spring 19, and the moving blocks 3 on both sides move toward each other and to one side. The moving blocks 3 compress the second spring 24 to buffer the impact force of the landing.

[0039] The utility model cooperates with the motor 5, the power gear 6, the driven gear 7, the first pull rod 8, the second pull rod 9, the connecting rod 12, the mounting rod 11, and the outer supporting leg 14. The motor 5 drives the power gear 6 to rotate, the driven gear 7 drives the first pull rod 8 to rotate, the first pull rod 8 pulls the connecting rod 12 to rotate, cooperates with the second pull rod 9 to pull the upper part of the other side of the connecting rod 12, and the other end of the connecting rod 12 drives the outer supporting leg 14 to rotate around the mounting rod 11 to realize the recovery of the outer supporting leg 14, and the motor 5 rotates in the opposite direction to realize the lowering of the outer supporting leg 14. , which can realize the retraction and extension of the drone landing gear and prevent the landing gear from blocking the camera and other onboard equipment when the drone is working; the utility model also cooperates with the balance bar 20, the fixed plate 18, the shock absorbing groove 16, the first spring 19, the moving block 3, the buffer rod 23, and the second spring 24. When the drone lands, the balance bar 20 pushes the fixed plate 18 to move along the shock absorbing groove 16, compressing the first spring 19, and the moving blocks 3 on both sides move toward one side along the buffer rod 23, and the moving blocks 3 compress the second spring 24 to buffer the impact force of landing.

[0040] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A UAV landing gear for crane inspection, characterized in that: The invention comprises a mounting seat (1), a moving block (3), a moving block buffer mechanism, a retractable mechanism, a support leg and a support leg buffer mechanism. The mounting seat (1) is provided with a mounting groove (2) on a side close to the ground. The moving block (3) is composed of two pieces. Both ends of the mounting groove (2) are respectively slidably connected to the moving blocks (3). The moving block buffer mechanism is installed on the side close to the two moving blocks (3). The moving blocks (3) are provided with mounting plates (4) on both sides along the extension direction of the mounting seat (1). The retractable mechanism is installed on the mounting plate (4) and connected to the support leg. The support leg buffer mechanism is installed in the support leg.

2. The landing gear of a UAV for crane inspection according to claim 1, characterized in that: The retractable mechanism comprises a motor (5), a power gear (6), a driven gear (7) and a connecting rod mechanism, wherein the mounting plates (4) on both sides are a first mounting plate (4) and a second mounting plate (4); the motor (5) is mounted on the first mounting plate (4) and its output shaft passes through the first mounting plate (4) and is connected to the power gear (6); the driven gear (7) is rotatably connected to the first mounting plate (4) and meshes with the power gear (6); the connecting rod mechanism connects the power gear (6) and one end of the supporting leg.

3. The landing gear of a UAV for crane inspection according to claim 2, characterized in that: The connecting rod mechanism comprises a mounting rod (11), a pulling rod and a connecting rod (12); the driven gear (7) is fixedly connected to one end of the pulling rod, and the other end of the pulling rod, the connecting rod (12) and the mounting rod (11) are rotationally connected in sequence; one end of the supporting leg is fixedly connected to the mounting rod (11) and the end connected to the connecting rod (12); one end of the movable block (3) on which the buffer mechanism is installed is provided with a mounting block (10), and the other end of the mounting rod (11) is rotationally connected to the mounting block (10).

4. The landing gear of a UAV for crane inspection according to claim 3, characterized in that: The pull rod comprises a first pull rod (8) and a second pull rod (9), and there are two connecting rods (12); one end of the first pull rod (8) is fixedly connected to the driven gear (7), and the other end is connected to one end of a connecting rod (12); one end of the second pull rod (9) is rotatably connected to the second mounting plate (4), and the other end is connected to one end of another connecting rod (12); the other ends of the two connecting rods (12) are both rotatably connected to the mounting rod (11).

5. The landing gear of a UAV for crane inspection according to claim 4, characterized in that: One end of the two connecting rods (12) connected to the first pull rod (8) and the second pull rod (9) and the side away from the mounting rod (11) is fixedly connected to a limiting plate (13).

6. The landing gear of a UAV for crane inspection according to claim 1, characterized in that: The moving block buffer mechanism comprises a buffer rod (23) and a second spring (24). The two ends of the buffer rod (23) are respectively slidably connected to the two moving blocks (3), and the second spring (24) is sleeved on the buffer rod (23).

7. The landing gear of a UAV for crane inspection according to claim 1, characterized in that: The support legs include an outer support leg (14), an inner support leg (17) and a balance pole (20); one end of the inner support leg (17) is mounted on the outer support leg (14) via a support leg buffer mechanism, and the other end is connected to the middle of the balance pole (20) and is perpendicular to the balance pole (20).

8. The landing gear of a UAV for crane inspection according to claim 7, characterized in that: The support leg buffer mechanism comprises a fixed connecting piece and a first spring (19); a shock absorbing groove (16) is provided inside one end where the outer support leg (14) and the inner support leg (17) are connected, and a connecting groove (15) is provided on the end surface; the shock absorbing groove (16) and the connecting groove (15) are connected, both are cylindrical, and the diameter of the shock absorbing groove (16) is larger than that of the connecting groove (15); one end of the first spring (19) is connected to the shock absorbing groove (16), and the other end is connected to one side of the fixed connecting piece; the fixed connecting piece is disc-shaped, with a diameter larger than that of the connecting groove (15); it is located in the shock absorbing groove (16) and forms a moving pair with the shock absorbing groove (16); the other side is connected to the inner support leg (17); the diameter of the inner support leg (17) is smaller than the diameter of the shock absorbing groove (16).

9. The landing gear of a UAV for crane inspection according to claim 1, characterized in that: Limiting grooves (21) are provided on both sides of the installation groove (2), and limiting blocks (22) are fixedly connected on both sides of the moving block (3), and the limiting blocks (22) and the limiting grooves (21) form a moving pair.

10. The UAV landing gear for crane inspection according to claim 1, characterized in that: The mounting seat (1) is provided with a mounting hole (25), and the drone is mounted on the mounting seat (1) through the mounting hole (25).

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