Lifting clamp for task equipment of unmanned aerial vehicle

Abstract

The utility model discloses an unmanned aerial vehicle task equipment hoisting clamp and belongs to the field of unmanned aerial vehicles. The clamp comprises a lifting ring lead screw, a threaded lantern ring, a connecting rod lifting claw and a bottom ring sleeve. The main body of the lifting ring screw rod is a threaded rod, a lifting ring is arranged at the top end and a polished shaft section is arranged at the lower end. The threaded lantern ring is coaxially sleeved on the threaded rod part of the lifting ring screw rod and is in threaded fit with the lifting ring screw rod. And the bottom ring sleeve is coaxially and axially sleeved on the optical axis section of the lifting ring screw rod in a limiting manner and is in running fit with the optical axis section. The four sets of connecting rod lifting claws are evenly distributed on the periphery of the threaded lantern ring, the connecting rod lifting claws are four-connecting-rod mechanisms, and the connecting rods are hinged to one another to form a parallelogram. Grabber hooks used for grabbing equipment to be hoisted are arranged at the lower ends of the connecting rod hoisting claws, and two connecting rods of the connecting rod hoisting claws are hinged to the threaded lantern ring and the bottom ring sleeve correspondingly, so that the opening angle of the connecting rod hoisting claws is adjusted. The hoisting clamp is used for hoisting unmanned aerial vehicle task equipment with an inner concave part, and the problems that the equipment is inconvenient to load and unload and has potential safety hazards during loading and unloading are solved.

Description

Technical Field

[0001] The invention belongs to the field of unmanned aerial vehicles (UAVs), and in particular relates to a hoisting fixture for UAV mission equipment, which is an auxiliary tool for hoisting UAV mission equipment. Background Art

[0002] As drones expand into various fields and gain more capabilities, fixed-wing drones are increasingly demanding onboard mission equipment, such as optoelectronic platforms and radars, to meet diverse application scenarios. These higher requirements often come with increased size and weight, from a few centimeters and a few kilograms to tens of centimeters and dozens of kilograms. This means that installing or removing drone-mounted mission equipment, once easily accomplished by one or two people, now requires the coordinated efforts of five or six.

[0003] Because drone-mounted mission equipment typically has a smooth surface and lacks mounting surfaces, conventional lifting fixtures are difficult to use. Installation and removal of mission equipment typically requires multiple people to coordinate and move the equipment or tie it down with ropes. During the installation and removal process, operator coordination errors can occur at any time, causing unpredictable damage to the equipment or drone, or even causing operator injuries, leading to safety accidents.

[0004] At the same time, due to the special nature of drones, the weight of drones must be minimized, so it is not possible to add auxiliary disassembly and assembly devices or equipment to the drone and mission equipment. Therefore, considering the structural characteristics of the drone-mounted mission equipment, which has a smooth exterior and only a recessed area on the top of the equipment, it is necessary to design a dedicated lifting fixture to facilitate the installation, removal and replacement of the mission equipment. Summary of the Invention

[0005] Technical problem to be solved: In order to avoid the shortcomings of the existing technology, the present invention provides a UAV mission equipment lifting fixture for lifting fixed-wing UAV mission equipment, which solves the problem that UAV mission equipment has no special lifting fixture, is inconvenient to load and unload, and has potential safety hazards in loading and unloading.

[0006] The technical solution of the present invention is: a lifting fixture for UAV mission equipment, comprising a lifting eye screw, a threaded collar, a connecting rod lifting claw and a bottom ring sleeve;

[0007] The lifting ring screw rod is vertically arranged, and its main body is a threaded rod, with a lifting ring at the top and an optical axis section at the bottom;

[0008] The threaded collar is coaxially sleeved on the threaded rod portion of the lifting ring screw and matched with the thread of the lifting ring screw;

[0009] The bottom ring sleeve is coaxial and axially limited and is sleeved on the optical axis section of the lifting ring screw, and is rotationally matched with the optical axis section;

[0010] The connecting rod lifting claw is provided with multiple groups, evenly distributed around the circumference of the threaded collar; the connecting rod lifting claw is a four-bar mechanism, including a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod, and the four connecting rods form a parallelogram; one end of the first connecting rod is hinged to the threaded collar, and the other end is hinged to the middle of the second connecting rod; one end of the second connecting rod is hinged to the bottom ring sleeve, and the other end is hinged to the middle of the third connecting rod; one end of the third connecting rod is hinged to one end of the fourth connecting rod, and the other end is provided with a flat claw hook, and the claw hook is used to grasp the equipment to be lifted; the other end of the fourth connecting rod is hinged to the middle of the first connecting rod.

[0011] A further technical solution of the present invention is: the lifting fixture also includes a limit bolt, which is coaxially installed on the lower end surface of the optical axis section, for limiting the axial downward displacement of the bottom ring sleeve; a step is provided between the optical axis section of the lifting ring screw and its threaded rod section, for limiting the axial upward displacement of the bottom ring sleeve.

[0012] A further technical solution of the present invention is: a threaded hole is axially provided at the center of the lower end surface of the optical axis segment, the rod of the limiting bolt is threadedly connected to the threaded hole, and the head of the limiting bolt contacts the lower end surface of the bottom ring sleeve.

[0013] A further technical solution of the present invention is: the threaded sleeve includes an inner thread sleeve and an outer ring sleeve, the inner thread sleeve is provided with an internal thread and is threadedly connected to the threaded rod of the lifting ring screw; the outer ring sleeve is coaxially sleeved on the outer diameter of the inner thread sleeve and is fixedly connected to the inner thread sleeve; a plurality of connecting ears are evenly distributed around the outer diameter of the outer ring sleeve, which is used to be hinged to the first connecting rod through a pin shaft.

[0014] A further technical solution of the present invention is that the outer diameter circumference of the bottom ring sleeve is evenly distributed with the same number of connecting ears as the connecting ears of the outer ring sleeve, which are used to be hinged to the second connecting rod through a pin shaft.

[0015] A further technical solution of the present invention is that: the connecting rod hanging claws are provided with four groups, and the outer ring sleeve and the bottom ring sleeve are each provided with four connecting ear pieces.

[0016] A further technical solution of the present invention is that the claw hook is arranged horizontally and faces outward; during hoisting, the upper end surface of the claw hook contacts the top inner wall of the shell of the hoisted equipment.

[0017] A further technical solution of the present invention is: two second connecting rods and two fourth connecting rods are provided, the two second connecting rods are parallel and aligned at both ends, and the two fourth connecting rods are parallel and aligned at both ends; the first connecting rod and the third connecting rod are clamped between the two second connecting rods and between the two fourth connecting rods.

[0018] Beneficial effects

[0019] The beneficial effects of the present invention are as follows: the present invention provides a hoisting fixture for drone mission equipment, which is suitable for drone mission equipment with a recessed mounting area on the top. By hanging the hoisting fixture on a traveling crane or a truck crane, the opening size of the connecting rod lifting claw is adjusted to adapt to the same type of drone mission equipment of different specifications and sizes. By screwing the lifting eye screw, the claw hook is embedded in the recessed portion on the top of the drone mission equipment, so that the claw hook fits with the inner wall of the top of the shell of the hoisted equipment, and the hoisting, installation and disassembly of the drone mission equipment can be achieved. By using this hoisting fixture, a single person can install or disassemble the drone mission equipment, which improves work efficiency, liberates manpower, and ensures the safety of the equipment and operators.

[0020] The lifting fixture of this invention utilizes a purely mechanical connection, offering a 360° viewing angle without blind spots. It is easy to operate, highly reliable, and does not damage or adversely affect the equipment. Its simple component structure makes it easy to process and assemble, resulting in excellent manufacturability and cost-effectiveness. Maintenance is also simplified; routine maintenance requires only applying grease to the threads of the eye screw and inner sleeve.

[0021] The lifting clamp of the present invention is easy to store and has good storage performance. By screwing the lifting ring screw and adjusting the position of the threaded collar to make it close to the bottom collar, the connecting rod lifting claw can be folded like an umbrella, which makes the carrying and storage of the clamp convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the lifting fixture of the present invention;

[0023] Figure 2 This is a schematic diagram of the working state of the lifting fixture of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the lifting ring screw in the present invention;

[0025] Figure 4 This is a schematic diagram of the connecting rod lifting claw structure of the present invention;

[0026] Figure 5 It is a schematic diagram of the structure of the inner wire sleeve in the present invention;

[0027] Figure 6 This is a schematic diagram of the outer ring structure in the present invention;

[0028] Figure 7 This is a schematic diagram of the bottom ring structure of the present invention;

[0029] Figure 8 It is a schematic diagram of the limiting bolt structure in the present invention.

[0030] Explanation of the accompanying drawings: 1. Lifting eye screw, 11. Threaded rod, 12. Lifting eye, 13. Optical axis segment, 2. Threaded sleeve, 21. Inner thread sleeve, 211. Connecting flange, 22. Outer ring sleeve, 221. Connecting ear of outer ring sleeve, 222. Connecting part, 3. Connecting rod lifting claw, 31. First connecting rod, 32. Second connecting rod, 33. Third connecting rod, 34. Fourth connecting rod, 35. Claw hook, 36. Pin, 4. Bottom ring sleeve, 41. Connecting ear of bottom ring sleeve, 5. Limit bolt, 6. UAV mission equipment, 61. Inner recess. DETAILED DESCRIPTION

[0031] The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0033] See Figure 1 、 2 This embodiment provides a UAV mission equipment lifting fixture, serving as an auxiliary tool for lifting UAV mission equipment. It is used for installing or removing mission equipment with a recessed top surface, such as UAV optoelectronic platforms and radars. The fixture includes a lifting eye screw 1, a threaded collar 2, a connecting rod claw 3, a bottom ring 4, and a limit bolt 5. The detailed structure is described below.

[0034] See Figure 1 、 3 The lifting eye screw 1 is vertically arranged, and its main body is a threaded rod 11, with a lifting eye 12 at the top for lifting, and an optical axis section 13 coaxially arranged at the lower end with the main threaded rod 11. The threaded collar 2 is coaxially sleeved on the threaded rod 11 of the lifting eye screw 1, and is threadedly matched with the lifting eye screw 1. The threaded collar 2 can move up and down along the axis of the lifting eye screw 1.

[0035] See Figure 1 、 5, 6, the threaded collar 2 includes an inner thread sleeve 21 and an outer ring sleeve 22, which are coaxially fixedly connected. Specifically, the inner thread sleeve 21 is a sleeve structure, and a through internal thread is provided along its axis, which is threadedly connected to the threaded rod 11 of the lifting ring screw 1. The top of the inner ring sleeve 21 is provided with a connecting flange 211 for being fixedly connected to the outer ring sleeve 22. The outer ring sleeve 22 is coaxially sleeved on the outer diameter of the inner thread sleeve 21, and the top of the outer ring sleeve 22 is provided with an outwardly convex connecting portion 222 for being fixedly connected to the connecting flange 211 of the inner thread sleeve 21 by bolts, and the upper end face of the connecting portion 222 is against the lower end face of the connecting flange 211. Four connecting lugs 221 are evenly distributed around the outer diameter of the outer ring sleeve 22, for being hinged to the first connecting rod 31 of the connecting rod hanging claw 3 through a pin 36.

[0036] See Figure 1 、 7 The bottom ring sleeve 4 is coaxial and axially limited to the optical axis section 13 at the lower end of the eye screw 1. The bottom ring sleeve 4 is sleeve-shaped and rotates with the optical axis section 13. Due to the axial limitation, the bottom ring sleeve 4 cannot move axially along the rod of the eye screw 1. The limiting bolt 5 is coaxially installed on the lower end surface of the optical axis section 13. For details, please refer to Figure 8 A threaded hole is axially provided at the center position of the lower end face of the optical axis section 13 of the lifting eye screw 1. The threaded rod portion of the limiting bolt 5 is threadedly connected to the threaded hole of the optical axis section 13. The head of the limiting bolt 5 contacts the lower end face of the bottom ring sleeve 4, and the axial downward displacement of the bottom ring sleeve 4 is limited by the limiting bolt 5. At the same time, a step is provided between the optical axis section 13 of the lifting eye screw 1 and its threaded rod 11, thereby limiting the axial upward displacement of the bottom ring sleeve 4. The axial limitation of the bottom ring sleeve 4 is achieved by the cooperation of the limiting bolt 5 and the step of the lifting eye screw 1, so that it can only rotate around the axis of the optical axis section 13. The outer diameter circumference of the bottom ring sleeve 4 is evenly distributed with the same number of connecting ears 41 as the outer ring sleeve 22, which is used to be hinged to the second connecting rod 32 of the connecting rod hanging claw 3 through the pin 36.

[0037] See Figure 1 、 4The connecting rod lifting claw 3 is provided with four groups, evenly distributed around the circumference of the threaded collar 2. The connecting rod lifting claw 3 is a four-bar linkage, including a first connecting rod 31, a second connecting rod 32, a third connecting rod 33 and a fourth connecting rod 34, and the four connecting rods form a parallelogram. One end of the first connecting rod 31 is hinged to the connecting ear 221 of the outer ring sleeve 22, and the other end of the first connecting rod 31 is hinged to the middle of the second connecting rod 32. One end of the second connecting rod 32 is hinged to the connecting ear 41 of the bottom ring sleeve 4, and the other end of the second connecting rod 32 is hinged to the middle of the third connecting rod 33. One end of the third connecting rod 33 is hinged to one end of the fourth connecting rod 34, and the other end of the third connecting rod 33 is provided with a claw hook 35. The claw hook 35 is arranged horizontally and faces outward. The claw hook 35 is used to grasp the drone mission equipment 6 to be hoisted. The fourth connecting rod 34 connects the third connecting rod 33 and the first connecting rod 31, and its other end is hinged to the middle of the first connecting rod 31. In this embodiment, the connecting rods, the first connecting rod 31 and the connecting ear 221 of the outer ring sleeve 22 , and the second connecting rod 32 and the connecting ear 41 of the bottom ring sleeve 4 are all hinged via pins 36 .

[0038] To ensure the stability of the movement within the plane of the connecting rod lifting claw 3, in this embodiment, two second connecting rods 32 and two fourth connecting rods 34 are provided. The two second connecting rods 32 are parallel and aligned at both ends, and the two fourth connecting rods 34 are parallel and aligned at both ends. The first connecting rod 31 and the third connecting rod 33 are sandwiched between the two second connecting rods 32 and between the two fourth connecting rods 34. The hinged connection between the first connecting rod 31 and the connecting tab 221 of the outer ring sleeve 22 is forked, and the connecting tab 221 is clamped in the fork groove.

[0039] See Figure 2During hoisting, the lifting ring 12 of the lifting fixture is hung on a traveling crane or a truck-mounted crane. The traveling crane or truck-mounted crane is moved to place the lifting fixture directly above the UAV mission equipment 6 to be installed or removed. By rotating the lifting ring screw 1, the threaded collar 2 is moved up and down, thereby adjusting the opening and closing angles of the connecting rod lifting claws 3, so that the claw hooks 35 at the lower ends of the four third connecting rods 33 respectively enter the corresponding inner recesses 61 at the top of the mission equipment 6. When adjusting the opening and closing angles of the connecting rod lifting claws 3, the threaded collar 2 moves downward and closer to the bottom ring 4, and the opening and closing angle becomes smaller. The threaded collar 2 moves upward and away from the bottom ring 4, and the opening and closing angle becomes larger. Continue to twist the lifting eye screw 1 so that it drives the threaded collar 2 to move upward, and drives the first connecting rod 31 and the fourth connecting rod 34 of the connecting rod claw 3, thereby adjusting the expansion angle of the connecting rod claw 3 so that the claw hook 35 can hook the inner wall edge of the shell at the inner recess 61 of the task equipment 6, that is, below the inner edge of the lifting mechanism of the task equipment 6, and ensure that the claw hook 35 is in stable contact with the inner wall of the equipment shell, and then the lifting operation can be carried out. When installing the drone task equipment 6, the drone task equipment 6 is hoisted into place and then the equipment is fixedly connected; when disassembling the drone task equipment 6, first ensure that the connecting bolts fixing the task equipment 6 are completely loosened, and then the task equipment 6 is lifted to a suitable height by the lifting equipment and moved horizontally to the top of the packaging box, and the position is adjusted and slowly dropped into the packaging box for storage. After the lifting fixture is used, the lifting eye screw 1 can be rotated to move the threaded collar 2 to a position close to the bottom ring sleeve 4, so that the connecting rod claw 3 is completely retracted and then stored.

[0040] It should be noted that this lifting fixture can also be used to lift equipment that can be supported internally. The number of connecting rod lifting claws 3 can be adjusted according to the use requirements, and at least three sets are required to ensure stability. At the same time, the number of mounting tabs on the outer ring and bottom ring can be adjusted accordingly according to the number of connecting rod lifting claws 3.

[0041] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention.

Claims

1. A UAV mission equipment lifting fixture, characterized by: It includes a lifting eye screw, a threaded collar, a connecting rod lifting claw and a bottom ring sleeve; The lifting ring screw rod is vertically arranged, and its main body is a threaded rod, with a lifting ring at the top and an optical axis section at the bottom; The threaded collar is coaxially sleeved on the threaded rod portion of the lifting ring screw and matched with the thread of the lifting ring screw; The bottom ring sleeve is coaxial and axially limited and is sleeved on the optical axis section of the lifting ring screw, and is rotationally matched with the optical axis section; The connecting rod lifting claw is provided with multiple groups, evenly distributed around the circumference of the threaded collar; the connecting rod lifting claw is a four-bar mechanism, including a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod, and the four connecting rods form a parallelogram; one end of the first connecting rod is hinged to the threaded collar, and the other end is hinged to the middle of the second connecting rod; one end of the second connecting rod is hinged to the bottom ring sleeve, and the other end is hinged to the middle of the third connecting rod; one end of the third connecting rod is hinged to one end of the fourth connecting rod, and the other end is provided with a claw hook, and the claw hook is used to grasp the equipment to be lifted; the other end of the fourth connecting rod is hinged to the middle of the first connecting rod.

2. The UAV mission equipment hoisting fixture according to claim 1, characterized in that: The lifting fixture also includes a limit bolt, which is coaxially installed on the lower end surface of the optical axis section to limit the axial downward displacement of the bottom ring sleeve; a step is provided between the optical axis section of the lifting ring screw and its threaded rod section to limit the axial upward displacement of the bottom ring sleeve.

3. The UAV mission equipment hoisting fixture according to claim 2, characterized in that: A threaded hole is axially provided at the center of the lower end surface of the optical axis segment, the rod of the limiting bolt is threadedly connected to the threaded hole, and the head of the limiting bolt contacts the lower end surface of the bottom ring sleeve.

4. The UAV mission equipment hoisting fixture according to claim 1, characterized in that: The threaded sleeve includes an inner thread sleeve and an outer ring sleeve, the inner thread sleeve is provided with an internal thread and is threadedly connected to the threaded rod of the lifting ring screw; the outer ring sleeve is coaxially sleeved on the outer diameter of the inner thread sleeve and is fixedly connected to the inner thread sleeve; a plurality of connecting ears are evenly distributed around the outer diameter of the outer ring sleeve, which is used to be hinged to the first connecting rod through a pin shaft.

5. The UAV mission equipment hoisting fixture according to claim 4, characterized in that: The outer diameter circumference of the bottom ring sleeve is evenly distributed with the same number of connecting ears as the connecting ears, which is used for hinged connection with the second connecting rod through the pin shaft.

6. The UAV mission equipment hoisting fixture according to claim 5, characterized in that: The connecting rod hanging claws are provided with four groups, and the outer ring sleeve and the bottom ring sleeve are each provided with four connecting ear pieces.

7. The UAV mission equipment hoisting fixture according to claim 1, characterized in that: The claw hook is arranged horizontally and faces outward; during hoisting, the upper end surface of the claw hook contacts the inner wall of the top of the shell of the hoisted equipment.

8. The UAV mission equipment hoisting fixture according to claim 1, characterized in that: There are two second connecting rods and two fourth connecting rods, the two second connecting rods are parallel and aligned at both ends, and the two fourth connecting rods are parallel and aligned at both ends; the first connecting rod and the third connecting rod are clamped between the two second connecting rods and between the two fourth connecting rods.

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