Power-off self-locking electric air-drop device

Abstract

The utility model discloses a power-off self-locking electric air-drop device, and belongs to the technical field of lifting hooks. Comprising a frame body, a lifting hook assembly is arranged in the frame body and comprises a pair of symmetrically-distributed lifting hooks, the lifting hooks are rotationally installed in the frame body, each lifting hook is provided with a lifting position and a releasing position in the movement stroke, each lifting hook comprises a lifting part and a driving part, the rotating directions of the lifting parts and the driving parts are opposite, and the driving parts can be relatively fixed through locking pieces. The locking piece is controlled by the electric driving piece, the locking piece is provided with a locking position and a loosening position on the movement stroke, the locking piece is used for fixing the driving part of the lifting hook when the locking piece is located at the locking position, and the locking piece is used for avoiding the driving part of the lifting hook when the locking piece is located at the loosening position. The automatic unhooking device has the advantages that through a brand new structural design, the bearing capacity of the automatic unhooking device is improved, the requirement for torsional force of an electric driving piece is lowered, the overall reliability of the device is improved, the power-off self-locking capacity is improved, and the risk that goods fall accidentally in the construction process of the dispenser is lowered.

Description

Technical Field

[0001] The utility model relates to the technical field of hooks, and particularly relates to an electric aerial delivery device capable of power-off self-locking. Background Art

[0002] With the rise of the lifting industry, various forms of lifting devices emerge in an endless stream. In the traditional lifting industry, manual methods are generally used to pick up and unhook goods, which requires a large amount of labor. At present, some automatic unhookers gradually appear on the market and are widely used in scenarios such as unmanned aerial vehicle (UAV) lifting, waterborne cargo ship shipping, tower crane lifting, etc. However, the existing automatic unhookers in the prior art have more components, a higher probability of mechanism failure, and some existing technologies do not have a control mechanism and rely entirely on the weight of heavy objects to achieve self-locking. If the goods swing and lose weight in the air, there is a risk of accidental unhooking. In short, the existing automatic unhookers in the prior art have problems of poor reliability and general load-bearing capacity. Summary of the Invention

[0003] The purpose of the utility model is to provide an electric aerial delivery device capable of power-off self-locking to solve the technical problems of poor reliability and general load-bearing capacity of the existing automatic unhookers in the prior art.

[0004] To solve the above technical problems, the utility model adopts the following technical solutions:

[0005] Design an electric aerial delivery device capable of power-off self-locking, including a frame body. A hook assembly is arranged inside the frame body. The hook assembly includes a pair of symmetrically distributed hooks. The hooks are rotatably installed inside the frame body. The hooks have a lifting position and a release position in the movement stroke. The hook includes a lifting part and a driving part. The lifting part and the driving part rotate in opposite directions. The driving part can be relatively fixed through a locking part. The locking part is controlled by an electric driving part. The locking part has a locking position and a releasing position in the movement stroke. When the locking part is in the locking position, it is used to fix the driving part of the hook. When the locking part is in the releasing position, it is used to avoid the driving part of the hook. A restoring part is also installed on the frame body. When the locking part is in the releasing position, the restoring part is used to drive the hook to reset.

[0006] Preferably, the locking part includes a pressing part. The structural dimensions of the pressing part are adapted to the structural dimensions between the two driving parts when the hook is in the lifting position.

[0007] Preferably, the locking part is a top tooth. The top tooth is rotatably installed on the frame body. When the top tooth is in the locking position, it is horizontally placed.

[0008] Preferably, a fixing member is installed at the upper end of the frame body. The frame body can be fixedly installed on the driving device through the fixing member. The fixing member includes a C-shaped mounting plate, and the two side plates of the mounting plate are respectively fixed to the upper ends of the front and rear sides of the frame body through bolt assemblies.

[0009] Preferably, at least two threaded holes are formed in the top plate of the mounting plate. The threaded holes are symmetrically distributed on the top plate. The mounting plate is directly installed and fixed on the driving device through the threaded holes and bolt assemblies.

[0010] Preferably, the fixing member includes a lifting ring. A through hole is formed in the middle of the top plate of the mounting plate. Correspondingly, a threaded hole is provided on the upper end surface of the frame body. The lifting ring passes through the through hole and is in threaded fit with the threaded hole.

[0011] Preferably, the restoring member is a return spring piece. Return spring pieces are symmetrically installed at the upper ends of both sides inside the frame body. When the lifting hook is in the lifting position, the outer side of the driving part is in pressing fit with the return spring piece.

[0012] Preferably, the electric driving member is a servo steering gear. The servo steering gear is installed on the rear side surface of the frame body. The driving shaft of the servo steering gear is fixedly connected to the top tooth, and the servo steering gear drives the top tooth to rotate.

[0013] Preferably, a controller assembly is installed on the front side surface of the frame body. The controller assembly includes a controller frame body, and a power supply interface and a photosensitive switch interface are provided on the controller frame body.

[0014] Compared with the prior art, the beneficial technical effects of the present utility model are as follows: The device of the present utility model can convert the weight of the hoisted goods into a smaller pressure acting on the locking member, increasing the load-bearing capacity of the automatic hook release device. And because the device is symmetrically arranged left and right, the pressure can be offset, reducing the dependence on the electric driving member, prolonging the service life of the electric driving member, and ensuring that the device is self-locked in the event of an accidental power failure, preventing the risk of the goods falling due to power failure, and improving the overall reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is an assembly schematic diagram of the fixing member in the present utility model;

[0017] Figure 3 is a partial structural schematic diagram of the mounting plate in the present utility model;

[0018] Figure 4 is a schematic structural diagram inside the frame body of the present utility model;

[0019] Figure 5 This is a schematic structural diagram of the hook in the hoisting position in the present utility model;

[0020] Figure 6 This is a schematic structural diagram of the hook in the released position in the present utility model.

[0021] In the figure, 1 is the frame body; 2 is the hook; 21 is the hoisting part; 22 is the driving part; 3 is the top tooth; 31 is the pressing part; 4 is the servo steering gear; 5 is the mounting plate; 51 is the transverse bolt; 52 is the threaded hole; 53 is the through hole; 6 is the lifting ring; 7 is the return spring piece; 8 is the controller frame body; 81 is the power interface; 82 is the photosensitive switch interface; 9 is the optical axis bolt. Specific embodiments

[0022] The following will describe the specific embodiments of the present utility model in conjunction with the accompanying drawings and embodiments. However, the following embodiments are only used to illustrate the present utility model in detail and do not limit the scope of the present utility model in any way. The equipment parts, structures, etc. involved in the following embodiments are all conventional commercially available products unless otherwise specified.

[0023] Embodiment 1: An electric airdrop device with power-off self-locking, see Figures 1-6 , including a frame body 1. A hook assembly is provided inside the frame body 1. The hook assembly includes a pair of symmetrically distributed hooks 2. The hooks 2 are rotatably installed inside the frame body 1. The hooks 2 have a hoisting position and a released position in the movement stroke. The hook 2 includes a hoisting part 21 and a driving part 22. The hoisting part 21 and the driving part 22 rotate in opposite directions. The driving part 22 can be relatively fixed through a locking member. The locking member is controlled by an electric driving member. The locking member has a locking position and a releasing position in the movement stroke. When the locking member is in the locking position, it is used to fix the driving part of the hook 2. When the locking member is in the releasing position, it is used to avoid the driving part of the hook 2.

[0024] Specifically, as Figure 4 shown, the hook 2 is rotatably installed inside the frame body 1 through an optical axis bolt 9. The locking member is a top tooth 3. The top tooth 3 includes a pressing part 31. The structural dimensions of the pressing part 31 are adapted to the structural dimensions between the two driving parts 22 when the hook 2 is in the hoisting position. The pressing part 31 is used for pressing cooperation with the driving part 22 of the hook 2, so as to realize the relative fixation of the hook 2. Preferably, the electric driving member is a servo steering gear 4. The servo steering gear 4 is installed on the rear side surface of the frame body 1. The driving shaft of the servo steering gear 4 is fixedly connected to the top tooth 3. The servo steering gear 4 drives the top tooth 3 to rotate. The top tooth 3 is horizontally placed when it is in the locking position. In other embodiments, the electric driving member can be a telescopic rod. The telescopic rod is fixedly matched with the top tooth 3. The telescopic rod drives the top tooth 3 to insert between the two driving parts 22 or avoid the driving part 22.

[0025] Preferably, as Figure 4As shown, the optical axis bolt 9 is installed at a position below the middle of the hook 2. With this design, the torque received by the driving part 22 is relatively small.

[0026] Embodiment 2: On the basis of Embodiment 1, as Figures 1-3 shown, a fixing part is installed at the upper end of the frame body 1. The frame body 1 can be installed on the driving device through the fixing part, and the driving device drives this electric airdrop device to transport the goods to the end point.

[0027] Specifically, as Figure 2 shown, the fixing part includes a C-shaped mounting plate 5. The two side plates of the mounting plate 5 are respectively fixed to the upper front and rear sides of the frame body 1 through transverse bolts 51. The fixing part also includes a lifting ring 6. A through hole 53 is opened in the middle of the top plate of the mounting plate 5. Correspondingly, threaded holes are provided on the upper end surface of the frame body 1. The lifting ring 6 passes through the through hole 53 and is in threaded fit with the threaded hole. When the lifting ring 6 is tightened, the lifting ring 6 is in top pressure fit with the upper end of the mounting plate 5, and the driving device can be fixed to this device by hooking the lifting ring 6.

[0028] Preferably, as Figure 3 shown, at least two threaded holes 52 are opened on the top plate of the mounting plate 5, and the threaded holes 52 are symmetrically distributed on the top plate. When the lifting ring 6 is not needed, the lifting ring 6 can be unscrewed, and the mounting plate 5 is directly installed and fixed on the driving device through the threaded holes 52 and the bolt assembly.

[0029] Embodiment 3: On the basis of Embodiment 1, as Figure 4 shown, elastic members are symmetrically installed at the upper ends on both sides inside the frame body 1. When the hook 2 is in the lifting position, the outside of its driving part is in top pressure fit with the elastic members. Specifically, the elastic member is a return spring piece 7. The return spring piece 7 is used to release elastic force when the top tooth 3 is in the released position, so as to push the driving part 22 of the hook 2 to rotate to the released position, and further enable the lifting part 21 of the hook 2 to release the goods.

[0030] Embodiment 4: On the basis of Embodiment 1, as Figure 1 shown, the power-off self-locking electric airdrop device further includes a controller assembly. The controller assembly is installed on the front side of the frame body 1. The controller assembly includes a controller frame body 8, and a power interface 81 is provided on the controller frame body 8. With this design, it is available for users to replace the battery without disassembling the automatic unhooking device, extending the operation time, and the control of the dispenser can be completed through the control schemes of the lighting devices carried by the drone, tower crane, shipping lights and other equipment, which is more stable and reliable, and reduces the risk of control signal loss due to a relatively long control distance.

[0031] Preferably, a photosensitive switch interface 82 is also provided on the controller frame 8. With such a design, there are two driving methods for the servo steering gear: one is to control it through a short-range remote controller, with a control range of 80m. This method is used for using the lifting hook at close range, such as clamping goods and operating at close range; the second is to control it through light. A photosensitive switch interface 82 is provided on the controller frame 8. After inserting the photosensitive switch wire, when the photosensitive switch senses that the light intensity reaches a certain threshold, the servo steering gear 4 drives the top tooth 3 to rotate 90 degrees, the goods lifting hook is released and opened, and the goods are unhooked.

[0032] This device designs a brand-new controller, which can be controlled remotely within a short distance and can also control the automatic unhooking of the dispenser through the original lighting control scheme of the lifting device when used at a long distance, making the automatic unhooking device not only increase reliability but also extend the operable range, that is, the device can lift as far as it can, and the automatic unhooking device can operate stably as far as it can.

[0033] The working process of this device is as follows Figure 5 As shown in the figure, the servo steering gear 4 drives the top tooth 3 to push open the upper ends of the two goods lifting hooks 2. At this time, the top tooth 3 is in a horizontal state. At this time, the hooks below the goods lifting hooks 2 are closed, and the lifting straps of the goods will be stuck in the inner part of the space between the two hooks. At this time, even if the servo steering gear 4 is powered off, the top tooth 3 will still push against the upper ends of the two goods lifting hooks. The pulling force from the weight of the goods will be transmitted to the top tooth 3 through the goods lifting hook 2 and the optical axis bolt 9. Since the left and right goods lifting hooks 2 are symmetrical, the transmitted forces are opposite, so they will cancel each other out on the top tooth 3. At this time, the servo steering gear 4 is not stressed, which can prevent the weight of the goods from being borne by the internal motor of the steering gear, resulting in motor burnout.

[0034] Due to this force structure, it can be ensured that even if the servo steering gear 4 is powered off, the structure itself can still complete self-locking to ensure that the goods will not fall. Another advantage of this structure is that the weight of the goods can be transferred to the goods lifting hook 2, so that the strength of the goods lifting hook 2 itself can ensure the ability to carry the goods, improving the load-bearing capacity of the entire automatic unhooking device. For example, if a 400-kilogram goods acts on the lifting hook and a force analysis is done, it is found that the lateral force brought to the top tooth is only 29.7 kilograms. This requires lower requirements for the core driving components and makes the dropping action easier to achieve.

[0035] As Figure 6 shown in the figure, when unhooking, the servo steering gear 4 drives the top tooth 3 to rotate 90 degrees, releasing the upper end of the goods lifting hook 2. At this time, due to the gravity of the goods acting on the lifting part of the lifting hook 2 and the elastic force of the return spring piece, the lifting part of the lifting hook 2 rotates inward, the lifting hook 2 opens a gap, and the goods are released.

[0036] The present utility model has been described in detail above in conjunction with the accompanying drawings and embodiments. However, those skilled in the art can understand that, without departing from the gist of the present utility model, various specific parameters in the above embodiments can be changed to form multiple specific embodiments, which are all within the common scope of variations of the present utility model and will not be elaborated herein one by one.

Claims

1. An electric airdrop device with power-off self-locking, comprising a frame body, characterized in that, A hook assembly is provided on the frame body. The hook assembly includes a pair of symmetrically distributed hooks. The hooks are rotatably installed on the frame body. The hooks have a lifting position and a release position in their movement stroke. The hooks include a lifting portion and a driving portion. The lifting portion and the driving portion rotate in opposite directions. The driving portion can be relatively fixed by a locking member. The locking member is controlled by an electric driving member. The locking member has a locking position and a releasing position in its movement stroke. When the locking member is in the locking position, it is used to fix the driving portion of the hook. When the locking member is in the releasing position, it is used to avoid the driving portion of the hook. A restoring member is also installed on the frame body. When the locking member is in the releasing position, the restoring member is used to drive the hook to reset.

2. The power-off self-locking electric airdrop device according to claim 1, wherein The locking member includes a pressing portion. The structural dimensions of the pressing portion are adapted to the structural dimensions between the two driving portions when the hook is in the lifting position.

3. The power-off self-locking electric airdrop device according to claim 2, wherein The locking member is a top tooth. The top tooth is rotatably installed on the frame body. The top tooth is horizontally placed when it is in the locking position.

4. The power-off self-locking electric airdrop device according to claim 1, characterized in that A fixing member is installed at the upper end of the frame body. The frame body can be installed and fixed on the driving device through the fixing member. The fixing member includes a C-shaped mounting plate. The two side plates of the mounting plate are respectively fixed to the front and rear upper sides of the frame body through bolt assemblies.

5. The power-off self-locking electric airdrop device according to claim 4, characterized in that, At least two threaded holes are provided on the top plate of the mounting plate. The threaded holes are symmetrically distributed on the top plate. The mounting plate is directly installed and fixed on the driving device through the threaded holes and bolt assemblies.

6. The power-off self-locking electric airdrop device according to claim 4, wherein The fixing member includes a lifting ring. A through hole is provided in the middle of the top plate of the mounting plate. Correspondingly, a threaded hole is provided on the upper end surface of the frame body. The lifting ring passes through the through hole and is in threaded cooperation with the threaded hole.

7. The power-off self-locking electric airdrop device according to claim 1, wherein, The restoring member is a return spring piece. Return spring pieces are symmetrically installed on the upper sides of both sides inside the frame body. When the hook is in the lifting position, the outside of the driving portion is in pressing cooperation with the return spring piece.

8. The power-off self-locking electric airdrop device according to claim 3, wherein, The electric driving member is a servo steering gear. The servo steering gear is installed on the rear side surface of the frame body. The driving shaft of the servo steering gear is fixedly connected to the top tooth. The servo steering gear drives the top tooth to rotate.

9. The power-off self-locking electric aerial delivery device according to claim 1, characterized in that, A controller assembly is installed on the front side surface of the frame body. The controller assembly includes a controller frame body. A power supply interface and a photosensitive switch interface are provided on the controller frame body.

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