A lightweight hanging and dropping locking mechanism and its hanging and dropping method

Abstract

The present invention discloses a lightweight hanging and dropping locking mechanism and its hanging and dropping method, which includes a hook, a hanging plate assembly, side plates and a rocker; the bottom end of the hook is rotatably connected to the side plates, the hanging plate assembly is located above the hook, and a contact member is provided at one end of the hanging plate assembly close to the hook; one end of the hanging plate assembly far from the hook is rotatably connected to the side plates, and a hanging plate hole is provided on the hanging plate assembly, and the hanging plate hole is an arc-shaped hole; a rocker shaft is provided near the middle position of the rocker, the rocker rotates around the rocker shaft, the rocker shaft is provided on the side plates, a rocker pin is provided at the bottom end of the rocker, and the rocker pin is inserted into the hanging plate hole; when the goods are hung on the hook, the top end of the hook rotates counterclockwise to contact the contact member, the rocker pin is located at one end of the hanging plate hole close to the hook, and the angle formed by the connection line between the rocker pin and the rocker shaft and the end of the hanging plate hole close to the hook is less than 90° self-locking angle. It ensures low cost and high efficiency of hanging transportation, and is safe and reliable during hanging and dropping tasks.

Description

Technical Field

[0001] The present invention belongs to the field of external suspension cargo transportation in aviation, and relates to a lightweight suspension release locking mechanism and its suspension and release method. Background Art

[0002] When performing the task of external suspension cargo transportation in aviation, the suspension and release of the moored cargo mainly rely on the suspension release device installed in the cargo hold. The suspension release locking mechanism is the core actuating mechanism of the suspension release device.

[0003] At present, domestic and foreign suspension transport aircraft are mostly used for the transportation of large-load goods with a load of 1000 kg or more. Correspondingly, the suspension release locking mechanism has also been specially designed for large loads to adapt to the suspension and release of large loads. Most of these suspension release locking mechanisms require multi-stage transmission to reduce the load of the release actuator with a large transmission ratio, and the structure is relatively complex. For the transportation of small-load goods below 1000 kg, in most cases, it is covered by the technology of the 1000 kg suspension release locking mechanism.

[0004] With the increasing maturity of the development of unmanned aerial vehicles, there is a large demand for small cargo unmanned aerial vehicles. Due to the limitation of the takeoff weight, the load capacity of this type of suspension transport aircraft is small, and most of the suspension transport weights are below 250 kg. The conventional suspension release locking mechanism cannot meet the requirements of small installation space, small self-weight, and low manufacturing cost. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above-mentioned disadvantages of the prior art, and provide a lightweight suspension release locking mechanism and its suspension and release method, realizing a suspension release locking mechanism with small structural dimensions, small self-weight, easy processing, and high safety, ensuring low-cost and high-efficiency suspension transportation, and being safe and reliable during the suspension and release tasks.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A lightweight suspension release locking mechanism includes a hook, a suspension plate assembly, side plates, and a rocker.

[0008] The bottom end of the hook is rotatably connected to the side plate. The suspension plate assembly is located above the hook, and a contact member is provided at one end of the suspension plate assembly close to the hook. The other end of the suspension plate assembly far from the hook is rotatably connected to the side plate. An arc-shaped hole is provided on the suspension plate assembly. A rocker shaft is provided near the middle position of the rocker. The rocker rotates around the rocker shaft, and the rocker shaft is provided on the side plate. A rocker pin is provided at the bottom end of the rocker, and the rocker pin is inserted into the arc-shaped hole.

[0009] When the goods are hung on the hook, the contact part contacts with the counterclockwise rotation side at the top of the hook. The rocker pin is located at one end of the suspension plate hole close to the hook, and the angle formed by the connection line between the rocker pin and the rocker shaft and the end of the suspension plate hole close to the hook is less than 90°, which is a self-locking angle.

[0010] Preferably, a driving device is arranged on the right side of the top of the rocker. The driving direction of the driving device is the clockwise and counterclockwise directions of the rocker.

[0011] Preferably, a manual release is arranged near the middle position of the rocker.

[0012] Preferably, the contact part adopts a roller. The roller is rotatably connected with a roller shaft, and the roller shaft is located at one end of the suspension plate assembly close to the hook.

[0013] Preferably, the suspension plate assembly includes a left suspension plate and a right suspension plate which are symmetric left and right. The contact part and the bottom end of the rocker are located between the left suspension plate and the right suspension plate, and the suspension plate hole is arranged on the left suspension plate or the right suspension plate.

[0014] Preferably, a hook bevel is arranged on the counterclockwise rotation side at the top of the hook.

[0015] Preferably, a suspension plate assembly stop block is arranged on the side plate. The suspension plate assembly stop block is located in the clockwise rotation direction of the suspension plate assembly.

[0016] Preferably, a hook stop block is arranged on the side plate. The hook stop block is located in the counterclockwise rotation direction of the hook.

[0017] Preferably, an on-board mounting hole is arranged at the top of the side plate.

[0018] A suspension and release method based on the light hanging release locking mechanism. When hanging goods, hang the goods on the hook. First, rotate the hook clockwise to the highest point, and then rotate the rocker clockwise. The rocker pin is located at one end of the suspension plate hole close to the hook. At this time, the contact part contacts with the counterclockwise rotation side at the top of the hook. The angle formed by the connection line between the rocker pin and the rocker shaft and the end of the suspension plate hole close to the hook is less than 90°, and a self-locking structure is formed between the hook and the suspension plate assembly.

[0019] When unloading or airdropping, rotate the rocker counterclockwise. The rocker pin moves to the end far from the hook in the suspension plate hole. The angle formed by the connection line between the rocker pin and the rocker shaft and the end of the suspension plate hole close to the hook is greater than 90°, unlocking the self-locking structure, so that the contact part is separated from the top of the hook, and the hook rotates counterclockwise to be separated from the goods.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention provides a lightweight hanging and dropping locking mechanism, which can perform hanging, transportation and dropping tasks. When performing the hanging task of externally hanging goods in flight, the hook is opened to smoothly hook the goods; during the transportation of the goods, the mechanism is locked and the hanging is kept reliable; when unloading or airdropping is required, the rocker is driven to unlock the locking mechanism, the hook is opened, and the goods are dropped. The locking of the mechanism relies on the connection line between the rocker pin and the rocker shaft to form a self-locking angle less than 90° with the hanging plate hole of the hanging plate assembly. Under the action of the hanging load, the locking mechanism always has a tendency to move towards the locking area to ensure reliable locking. By shortening the distance between the hanging point of the hook and the hook shaft, and increasing the distance from the acting point of the hanging plate assembly and the hook to the hook shaft, the acting force of the hook on the hanging plate assembly is greatly reduced, which is beneficial to reducing the weight of the mechanism. The hanging and dropping locking mechanism has a compact structure, a small number of parts, and simple structural features, making the mechanism have a small self-weight and easy to process.

[0022] Furthermore, the hanging plate assembly stopper and the hook stopper are respectively arranged near the positions of the hanging plate assembly and the hook shaft. While effectively resisting the impact load of the mechanism movement after the goods are dropped, the structure is simple and compact. Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of the present invention in a locked state after hanging the goods;

[0024] Figure 2 is a schematic diagram of the locked state of the present invention after removing the left hanging plate part of the structure;

[0025] Figure 3 is a schematic diagram of the rocker disengaging from the locking area when the present invention drops the goods;

[0026] Figure 4 is a schematic diagram of the rocker assisting the hanging plate assembly to open and the hook approaching separation from the hanging plate assembly when the present invention drops the goods;

[0027] Figure 5 is a schematic diagram of the rocker restricting the hanging plate assembly from continuing to rotate, the hook being fully opened, and the goods being dropped when the present invention drops the goods.

[0028] Wherein: 1 - goods, 2 - hook, 3 - hanging plate assembly, 4 - roller shaft, 5 - roller, 6 - on-board mounting hole, 7 - side plate, 8 - rocker shaft, 9 - rocker, 10 - driving device, 11 - side plate mounting hole, 12 - driving device mounting hole, 13 - manual dropping, 14 - hanging plate assembly stopper, 15 - hanging plate assembly shaft, 16 - hanging plate hole, 17 - rocker pin, 18 - hook stopper, 19 - hook shaft, 20 - initial section of the hanging plate hole, 21 - left hanging plate, 22 - right hanging plate, 23 - hook ramp, 24 - acting position of the driving device, 25 - middle section of the hanging plate hole, 26 - end section of the hanging plate hole. Detailed Embodiment

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0030] It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the accompanying drawings, and the terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms used in the description of the present invention in this specification are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0032] See Figure 1 and Figure 2 , the present invention discloses a light suspension release locking mechanism, which is applicable to the suspension, transportation and release of cargo 1 during the transportation of external suspended cargo in aviation. As the core actuator, the suspension release locking mechanism can integrate the drive device 10 and the manual release 13, and has multiple release methods in specific usage scenarios.

[0033] The suspension release locking mechanism includes a hook 2, a suspension plate assembly 3, a roller rotating shaft 4, a roller 5, a side plate 7, a rocker rotating shaft 8, a rocker 9, a suspension plate assembly stop block 14, a suspension plate assembly rotating shaft 15, a rocker pin 17, a hook stop block 18, a hook rotating shaft 19, a left suspension plate 21 and a right suspension plate 22.

[0034] An on-aircraft mounting hole 6 connected to the airframe is provided at the top of the side plate 7, and the hook 2, the suspension plate assembly 3, the suspension plate assembly stop block 14, the hook stop block 18 and the drive device 10 are installed on the through holes at the corresponding positions of the side plate 7.

[0035] The bottom end of the hook 2 is rotatably connected to the side plate 7 through a hook rotating shaft. A hook bevel 23 is provided on the counterclockwise rotation side at the top of the hook 2, and the side of the hook 2 is the suspension area.

[0036] The hook stop block 18 is located in the counterclockwise rotation direction of the hook 2. After the cargo 1 is released and the hook 2 rotates counterclockwise by a certain angle, the outside of the suspension area contacts the hook stop block 18 to limit the moving position of the hook 2.

[0037] The suspension plate assembly 3 is located above the hook 2. The suspension plate assembly 3 is designed with a left suspension plate 21 and a right suspension plate 22 that are symmetric left and right. The left suspension plate 21 and the right suspension plate 22 have the same structure. The roller 5 is installed on the roller rotating shaft 4 and rotates around the roller rotating shaft 4. The roller rotating shaft 4 is located at one end of the suspension plate assembly 3 close to the hook 2. The roller rotating shaft 4 is located between the left suspension plate 21 and the right suspension plate 22. The roller rotating shaft 4 is riveted to the left suspension plate 21 and the right suspension plate 22. The suspension plate assembly rotating shaft 15 is located at one end of the suspension plate assembly 3 far from the hook 2. The suspension plate assembly rotating shaft 15 is riveted to the left suspension plate 21 and the right suspension plate 22. The suspension plate assembly 3 rotates around the suspension plate assembly rotating shaft 15.

[0038] A suspension plate hole 16 is provided on the suspension plate assembly 3. The suspension plate hole 16 is provided on the left suspension plate 21 or the right suspension plate 22. The suspension plate hole 16 is an arc-shaped hole. The part of the suspension plate hole 16 close to the hook 2 is the initial section 20 of the suspension plate hole. The part of the suspension plate hole 16 far from the hook 2 is the tail section 26 of the suspension plate hole. The middle part is the middle section 25 of the suspension plate hole.

[0039] The initial section 20 of the suspension plate hole is the hanging locking area. The middle section 25 of the suspension plate hole is the auxiliary opening area. The tail section 26 of the suspension plate hole is the limiting section. By adjusting the dimensions of the initial section 20, the middle section 25, and the tail section 26 of the suspension plate hole, the hanging safety margin, the dropping ability, and the mechanism size can be changed.

[0040] The suspension plate assembly stopper 14 is located in the clockwise rotation direction of the suspension plate assembly 3 and is used to limit the moving position of the suspension plate assembly 3 after the cargo 1 is dropped.

[0041] A rocker shaft 8 is provided near the middle position of the rocker 9. The rocker 9 rotates around the rocker shaft 8. The rocker shaft 8 is provided on the side plate 7. The rocker pin 17 is in interference fit with the bottom end of the rocker 9. The bottom end of the rocker 9 is clamped between the left suspension plate 21 and the right suspension plate 22. The rocker pin 17 moves in the suspension plate hole 16.

[0042] The rocker 9 and the suspension plate hole 16 are in line contact through the cylindrical rocker pin 17 to reduce the friction when the mechanism is opened.

[0043] A driving device acting position 24 is designed at the top end of the rocker 9. A manual dropping 13 is provided near the middle position of the rocker 9. The manual dropping 13 is used to drive the rocker pin 17 to move in the suspension plate hole 16 and change the locking state of the hanging dropping locking mechanism. The driving device acting position 24 is located on the right side of the top end of the rocker 9.

[0044] See Figure 3 ., a driving device 10 is provided on the right side above the top end of the rocker 9. The driving device 10 acts on the driving device acting position 24. The driving direction of the driving device 10 is the clockwise and counterclockwise directions of the rocker 9 and is used to drive the rocker 9 to rotate clockwise and counterclockwise around the rocker shaft 8.

[0045] The hanging release locking mechanism is connected to the aircraft through the aircraft mounting holes 6. It is also possible to design various connection structures according to specific usage scenarios, so that the load of the hanging cargo 1 is transmitted from the side plate 7 to the airframe.

[0046] The usage process of the light hanging release locking mechanism is as follows: Hang the cargo 1 into the hook 2. First, rotate the hook 2 clockwise to the highest point, and then rotate the rocker 9 clockwise. The rocker pin 17 enters the initial section 20 of the hanging plate hole, forming a self-locking structure between the hook 2 and the hanging plate assembly 3. At this time, the hook inclined platform 23 is located between the left hanging plate 21 and the right hanging plate 22, and the roller 5 contacts the hook inclined platform 23, making the hook 2 unable to rotate, thus completing the hanging of the cargo 1. During the transportation of the cargo 1, the mechanism is locked, and the cargo 1 is always in a hanging and holding state.

[0047] The roller 5 contacts the hook inclined platform 23, making the contact between the hanging plate assembly 3 and the hook 2 a line contact, reducing the friction when the mechanism is opened. And the force exerted by the hook 2 on the roller 5 after hanging the cargo 1 always has a tendency to open the hanging plate assembly 3 relative to the rotation center of the hanging plate assembly 3, pushing the hanging plate assembly 3 to continue to open after the structural self-locking of the hanging plate assembly 3 is released.

[0048] See Figure 2 , after hanging the cargo 1, the rocker pin 17 is located at the end of the initial section 20 of the hanging plate hole. The self-locking angle α formed by the connection line of the rocker shaft 8 and the initial section 20 of the hole is less than 90°. The smaller the self-locking angle, the stronger the hanging and holding ability and the higher the structural safety. The hanging release locking mechanism is in a self-locking state, and the self-locking state does not change with the change of the weight of the hanging cargo 1.

[0049] When unloading or airdropping is required, the driving device 10 drives the rocker 9 to unlock the locking mechanism, the hook 2 opens, and the cargo 1 is released.

[0050] The rocker pin 17 moves in the hanging plate hole 16 to the end of the initial section 20 of the hanging plate hole. The self-locking angle α formed by the connection line of the rocker shaft 8 and the initial section 20 of the hole is greater than 90°. The hanging release locking mechanism cannot be structurally self-locked. The hanging plate assembly 3 rotates clockwise around the hanging plate assembly rotating shaft 15 under the action of the force transmitted by the cargo 1 to the hook inclined platform 23, and the hanging release locking mechanism has a tendency to open automatically.

[0051] See Figure 4 , under the action of the driving device 10, the rocker 9 continues to drive the rocker pin 17 to move in the hanging plate hole 16. When the rocker pin 17 moves to the middle section 25 of the hanging plate hole, it pushes the hanging plate assembly 3 to continue to rotate clockwise, separating the hanging plate assembly 3 from the hook inclined platform 23.

[0052] See Figure 5, under the action of the driving device 10, the hanging plate assembly 3 is completely separated from the hook inclined platform 23. The hook 2 rotates counterclockwise around the hook rotating shaft 19 under the action of the goods 1, and the goods 1 are dropped from the hook 2. The hook 2 rotates to the hook stopper 18, the hanging plate assembly 3 rotates to the hanging plate assembly stopper 14, and the rocker pin 17 rotates to the tail section 26 of the hanging plate hole. Under the combined action of the torque of the continuous rotation of the rocker 9 and the opening torque transmitted from the goods 1, the hanging plate assembly 3 rotates around the hanging plate assembly rotating shaft 15 in the opening direction of the hook 2 and disengages from the hook 2, and the suspended goods 1 are dropped from the hook 2.

[0053] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0054] It should be understood that the above description is for illustrative purposes and not for limitation. By reading the above description, many embodiments and many applications other than the provided examples will be obvious to those skilled in the art. Therefore, the scope of this patent should not be determined by reference to the above description, but should be determined by reference to the full scope of the foregoing claims and the equivalents thereof. For the sake of completeness, all articles and references including patent applications and published announcements are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the foregoing claims is not intended to abandon such subject matter, nor should the applicant be considered not to have considered such subject matter as part of the disclosed inventive subject matter.

Claims

1. A lightweight hanging and dropping locking mechanism, characterized in that, It includes a lifting hook (2), a suspension plate assembly (3), side plates (7) and a rocker (9); The bottom end of the lifting hook (2) is rotatably connected to the side plate (7). The suspension plate assembly (3) is located above the lifting hook (2). A contact member is provided at one end of the suspension plate assembly (3) close to the lifting hook (2). One end of the suspension plate assembly (3) far from the lifting hook (2) is rotatably connected to the side plate (7). A suspension plate hole (16) is provided on the suspension plate assembly (3), and the suspension plate hole (16) is an arc-shaped hole. A rocker shaft (8) is provided near the middle position of the rocker (9). The rocker (9) rotates around the rocker shaft (8). The rocker shaft (8) is provided on the side plate (7). A rocker pin (17) is provided at the bottom end of the rocker (9), and the rocker pin (17) is inserted into the suspension plate hole (16); When the goods (1) are hung on the lifting hook (2), the top end of the lifting hook (2) contacts the contact member when rotating counterclockwise. The rocker pin (17) is located at one end of the suspension plate hole (16) close to the lifting hook (2). The connecting line between the rocker pin (17) and the rocker shaft (8) forms a self-locking angle less than 90° with one end of the suspension plate hole (16) close to the lifting hook (2); The contact member adopts a roller (5). The roller (5) is rotatably connected with a roller shaft (4). The roller shaft (4) is located at one end of the suspension plate assembly (3) close to the lifting hook (2); A hook bevel (23) is provided on the counterclockwise rotation side of the top of the lifting hook (2).

2. The light suspension dropping and locking mechanism according to claim 1, characterized in that A driving device (10) is provided on the right side of the top end of the rocker (9). The driving direction of the driving device (10) is the clockwise and counterclockwise directions of the rocker (9).

3. The light suspension dropping and locking mechanism according to claim 1, wherein A manual release (13) is provided near the middle position of the rocker (9).

4. The light suspension dropping and locking mechanism according to claim 1, wherein The suspension plate assembly (3) includes a left suspension plate (21) and a right suspension plate (22) which are symmetric left and right. The contact member and the bottom end of the rocker (9) are located between the left suspension plate (21) and the right suspension plate (22). The suspension plate hole (16) is provided on the left suspension plate (21) or the right suspension plate (22).

5. The light suspension release locking mechanism according to claim 1, characterized in that A suspension plate assembly stopper (14) is provided on the side plate (7). The suspension plate assembly stopper (14) is located in the clockwise rotation direction of the suspension plate assembly (3).

6. The light suspension dropping and locking mechanism according to claim 1, wherein A hook stopper (18) is provided on the side plate (7). The hook stopper (18) is located in the counterclockwise rotation direction of the lifting hook (2).

7. The light suspension release locking mechanism according to claim 1, characterized in that, Upper mounting holes (6) are provided at the top of the side plate (7).

8. A suspension and release method for the light suspension and release locking mechanism according to any one of claims 1-7, characterized in that, When suspending goods, hang the goods (1) on the lifting hook (2). First, rotate the lifting hook (2) clockwise to the highest point, and then rotate the rocker (9) clockwise. The rocker pin (17) is located at one end of the suspension plate hole (16) close to the lifting hook (2). At this time, the top end of the lifting hook (2) contacts the contact member when rotating counterclockwise. The connecting line between the rocker pin (17) and the rocker shaft (8) forms a self-locking angle less than 90° with one end of the suspension plate hole (16) close to the lifting hook (2). The lifting hook (2) and the suspension plate assembly (3) form a self-locking structure; When unloading or airdropping, turn the rocker (9) counterclockwise. The rocker pin (17) moves to the end far away from the hook (2) in the suspension plate hole (16). The connecting line between the rocker pin (17) and the rocker shaft (8) forms a self-locking angle greater than 90° with the end of the suspension plate hole (16) close to the hook (2), unlocking the self-locking structure. As a result, the contact part is separated from the top of the hook (2), and the hook (2) rotates counterclockwise to separate from the goods (1).

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