Position limiting and locking structure and method for cabin container of airplane

Abstract

A kind of limiting and locking structure and the limiting and locking method of aircraft cabin container, limiting and locking structure is driven by one base, one limiting pin three groups of lock tongue mechanisms to carry out limiting and locking, base is fixed on the support floor in aircraft cabin, lock tongue mechanism cooperates with the locking seat of container bottom, limiting pin is driven three groups of lock tongue mechanisms to carry out locking to the locking seat of container bottom when moving upward, limiting pin is driven three groups of lock tongue mechanisms to release the locking of the locking seat of container bottom when moving downward, the present application is based on the bottom of container limiting and locking, i.e. meet the limiting and locking requirements of container, also can realize the requirements of automatic locking, unlocking, also can be used in other container industry of civil, application prospect is wide.

Description

Technical Field

[0001] This invention belongs to the field of structural design technology, specifically a limiting and locking structure and a limiting and locking method for containers inside an aircraft cabin. Background Technology

[0002] Containers are a widely used transportation device in the modern freight logistics field. The securing and locking of containers during transportation not only affects the safety of goods during transportation, but failure may also lead to catastrophic accidents.

[0003] For cargo aircraft, especially unmanned cargo aircraft, the securing of containers on board must meet the requirements of limiting movement in all directions as well as the requirements of load transfer in all directions. In particular, with the rapid development of unmanned cargo aircraft in recent years, container cargo transportation must also meet the requirements of automation. However, most of the container securing technologies in domestic container cargo transportation are still based on manual operation. For example, existing patent applications CN105691968A and utility model patent CN210762326U require manual securing of containers from multiple points around the perimeter, which cannot meet the needs of model development and research. Summary of the Invention

[0004] To meet the needs of aircraft cargo containers, this application provides a limiting and locking structure and a limiting and locking method for containers inside an aircraft cabin.

[0005] A limiting and locking structure is characterized by comprising a base, a limiting pin, and three locking tongue assemblies. The base body is a flat plate structure, with a protruding connecting seat fixed on its upper surface. The connecting seat has a central through hole passing through the base, and three horizontal connecting lugs arranged radially around the central through hole. A slotted through hole is provided on the base between each horizontal connecting lug. The limiting pin passes through the central through hole of the base. The upper part of the limiting pin is a round-headed pin, and the middle part of the limiting pin has three radially arranged connecting lugs perpendicular to the central axis of the limiting pin. The connecting lug is located below the base, and the lower end of the limiting pin has a vertically downward connecting head; each latch assembly includes a latch and a rocker arm. The upper end of the latch has an inwardly bent constraint end, and the lower end of the latch has two connecting holes. The outer first connecting hole is hinged to the upper end of the rocker arm through a first pin, and the inner second connecting hole is hinged to the horizontal connecting lug on the connecting seat through a second pin. The rocker arm passes through the slotted through hole on the base, and the lower end of the rocker arm is hinged to the connecting lug on the limiting pin through a third pin. The three latch assemblies are evenly connected to the base and the connecting lug on the limiting pin with the limiting pin as the center.

[0006] The limiting and locking structure is characterized in that the locking tongue is an L-shaped structure, a first connecting hole is provided at the bottom corner of the locking tongue, a second connecting hole is provided at the bottom end of the locking tongue, and an inwardly bent constraint end is provided at the top of the locking tongue.

[0007] The limiting and locking structure is characterized in that the rocker arm is an arc-shaped rod structure, and the two ends of the rocker arm are respectively provided with connecting ears.

[0008] The limiting and locking structure is characterized in that the base is provided with multiple connecting holes, through which the base of the limiting and locking structure can be fixed to the supporting floor.

[0009] A method for locking and limiting a container inside an aircraft cabin, characterized by the following: 1) using the above-mentioned locking structure, the base of the locking structure is fixed to the support floor of the aircraft; 2) the bottom of the container is provided with a locking seat, the locking seat has an I-shaped cross-section, including an upper connecting plate and a lower locking plate, the upper connecting plate of the locking seat is fixed to the bottom of the container, the lower locking plate of the locking seat is a circular plate that matches the locking tongue of the locking structure, the diameter of the lower locking plate is smaller than the inner diameter of the locking tongue in the open state, and the bottom center of the lower locking plate of the locking seat is provided with a limiting hole that matches the limiting pin of the locking structure; 3) when locking the container, firstly, the limiting pin is pulled downward by external force. When the limiting pin moves vertically downward, the limiting pin drives the locking tongue to rotate counterclockwise around the second pin shaft through the rocker arm, and the constraint end of the front end of the locking tongue opens outward. Then the container is placed... At the predetermined position of the aircraft support floor, the locking seat at the bottom of the container is aligned with the connecting seat of the locking structure, and the limiting hole at the bottom of the container is coaxial with the central through hole of the connecting seat of the locking structure. Then, by external force, the limiting pin of the locking structure is pushed vertically upward, so that the upper end of the limiting pin enters the limiting hole at the bottom of the container through the central through hole. When the limiting pin moves vertically upward, it drives the locking tongue to rotate clockwise around the second pin shaft through the rocker arm. The restraining end at the front end of the locking tongue presses inward against the upper surface of the locking plate of the locking seat at the bottom of the container, thus locking and fixing the bottom of the container. 4) When releasing the locking of the container, the limiting pin is pulled downward by external force. The limiting pin drives the locking tongue to rotate counterclockwise around the second pin shaft through the rocker arm. The restraining end at the front end of the locking tongue opens outward, releasing the pressure and locking of the locking plate of the locking seat at the bottom of the container, thus separating the container from the locking structure.

[0010] The aforementioned method for limiting and locking containers inside an aircraft cabin is characterized in that the lower end connector of the limiting pin is connected to the telescopic end of the actuating cylinder, and the actuating cylinder applies upward or downward force to the limiting pin.

[0011] The beneficial effects of this application are as follows: 1) The limiting locking structure of this invention is a complete assembly, consisting of a base and a limiting pin driving three sets of locking tongue mechanisms for limiting locking. This facilitates modular production and simplifies the connection with surrounding components, greatly simplifying maintenance, repair, or replacement during later use. 2) The limiting locking method for containers inside aircraft cabins in this application applies the limiting lock to the bottom of the container. Compared to traditional locking methods, this reduces the space required for limiting locks between containers, increasing the effective usable space in the cargo hold. Fewer limiting points are required during use, facilitating automated control connections, significantly saving transportation time and improving transportation efficiency. It is applicable to limiting and fixing containers and similar products, with a wide range of uses. 3) This invention, based on limiting locking at the bottom of the container, satisfies both the limiting and locking requirements of the container and enables automated locking and unlocking. It can also be used in other civilian container industries, with broad application prospects. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the limit locking structure.

[0013] Figure 2 An exploded view of the limiting and locking structure.

[0014] Figure 3 This is a schematic diagram of the base structure.

[0015] Figure 4 This is a schematic diagram of the limit pin structure.

[0016] Figure 5 This is a schematic diagram of the rocker arm structure.

[0017] Figure 6 Diagram of the locking tongue structure

[0018] Figure 7 This is a schematic diagram showing the installation and locking state of the limit locking structure.

[0019] Figure 8 This diagram shows the installation and unlocked state of the limit locking structure.

[0020] The numbers in the diagram are explained as follows: 1. Base, 2. Limit pin, 3. Locking tongue, 4. Rocker arm, 5. Connecting seat, 6. First pin, 7. Second pin, 8. Third pin, 9. Connecting hole, 10. Center through hole, 11. Connecting ears, 12. Slotted through hole, 13. Connecting lug, 14. Connecting head, 15. Restraining end, 16. First connecting hole, 17. Second connecting hole, 18. Supporting plate, 19. Container, 20. Locking seat, 21. Upper connecting plate, 22. Lower locking plate. Detailed Implementation

[0021] Referring to the attached drawings, the limiting and locking structure of this application includes a base 1, a limiting pin 2, and three locking tongue assemblies. The base 1 is a flat plate structure, and a protruding connecting seat 5 is fixed on the upper surface of the base 1. The connecting seat 5 has a central through hole 10 passing through the base. The connecting seat 5 has three horizontal connecting lugs 11 arranged radially around the central through hole. A slotted through hole 12 is provided on the base between each horizontal connecting lug 11. The limiting pin 2 passes through the central through hole 10 of the base 1. 0. The upper part of the limiting pin 2 is a round-headed pin. The middle part of the limiting pin 2 is provided with three radially arranged connecting lugs 13 perpendicular to the central axis of the limiting pin. The connecting lugs 13 are located below the base 1. The lower end of the limiting pin 2 is provided with a vertically downward connecting head 14. Each latch assembly includes a latch 3 and a rocker arm 4. The latch 3 is an L-shaped structure. The bottom corner of the latch 3 is provided with a first connecting hole 16. The bottom end of the latch 3 is provided with a second connecting hole 17. The top of the latch 3 is provided with an inwardly bent constraint end 15. The first connecting hole 16 of the latch 3 is hinged to the upper end of the rocker arm 4 through a first pin 6. The inner second connecting hole 17 is hinged to the horizontal connecting lugs 11 on the connecting seat through a second pin 7. The rocker arm 4 passes through the slotted through hole 12 on the base 1. The lower end of the rocker arm 4 is hinged to the connecting lugs 13 on the limiting pin 2 through a third pin 8. In this embodiment, the rocker arm 4 is an arc-shaped rod structure. The two ends of the rocker arm are respectively provided with connecting lugs. Three sets of locking tongue components are evenly connected to the connecting lug 13 of the base 1 and the limiting pin 2, with the limiting pin 2 as the center.

[0022] In practice, the base 1 of the limiting locking structure is provided with multiple connection holes 9, which can be used to fix the base of the limiting locking structure to the support floor 18.

[0023] When using the limiting locking structure of this application to limit and lock containers inside an aircraft cabin, the base 1 of the locking structure must be fixed to the support floor 18 of the aircraft. A locking seat 20 must be provided at the bottom of the container 19. This locking seat 20 has an I-shaped cross-section and includes an upper connecting plate 21 and a lower locking plate 22. The upper connecting plate 21 of the locking seat 20 is fixed to the bottom of the container 19. The lower locking plate 22 of the locking seat 20 is a circular plate that matches the locking tongue 3 of the limiting locking structure. The diameter of the lower locking plate 22 is smaller than the inner diameter of the locking tongue assembly when the locking tongue 3 is open. A limiting hole matching the limiting pin 2 of the locking structure is provided at the center of the bottom of the lower locking plate 22 of the locking seat 20. When locking the container, the limiting pin 2 is first pulled downwards by external force. When the limiting pin 2 moves vertically downwards, the limiting pin 2... The locking pin 2 drives the locking tongue 3 to rotate counterclockwise around the second pin shaft 7 via the rocker arm 4. The restraint end 15 at the front end of the locking tongue opens outward. Then, the container 19 is placed in the predetermined position on the aircraft support floor 18, so that the locking seat 20 at the bottom of the container 19 mates with the connecting seat 5 of the locking structure. The limiting hole at the bottom of the container 19 is coaxial with the central through hole 10 of the connecting seat 5 of the locking structure. Then, the limiting pin 2 of the locking structure is pushed vertically upward by external force, so that the upper end of the limiting pin 2 enters the limiting hole at the bottom of the container 19 through the central through hole 10. When the limiting pin 2 moves vertically upward, the rocker arm 4 drives the locking tongue 3 to rotate clockwise around the second pin shaft 7. The restraint end 15 at the front end of the locking tongue presses inward against the upper surface of the locking plate 22 of the locking seat at the bottom of the container, thus locking and fixing the bottom of the container 19. When the container 19 is released from locking, the limit pin 2 is pulled down by external force. The limit pin 2 drives the locking tongue 3 to rotate counterclockwise around the second pin shaft 7 through the rocker arm 4. The constraint end 15 at the front end of the locking tongue opens outward, releasing the pressure and locking of the locking plate 22 of the bottom locking seat 20 of the container 19, and the container 19 can be separated from the limit locking structure.

[0024] In practice, the actuator can provide upward or downward movement power to the limit pin of the limit locking structure. The lower end connector 14 of the limit pin 2 is connected to the telescopic end of the actuator, and the actuator applies upward or downward movement power to the limit pin.

[0025] This application uses a motion mechanism consisting of a base 1, a limiting pin 2, and three sets of locking tongue assemblies. A power unit applies a vertical driving force to the limiting pin 2, thereby driving the rocker arm 4 and locking tongue 3 of the locking tongue assembly to move. The base 1 is structurally and rigidly connected to the support floor 18 of the aircraft cargo hold, with the limiting pin 2 and locking tongue assembly being the moving parts. The power unit can act as a moving cylinder, applying an external force coaxial with the limiting pin 2. This force drives the limiting pin 2 to move up and down, thereby causing the locking tongue assembly to open and close inward and outward around the limiting pin 2. This achieves the cooperation between the limiting pin 2, the locking tongue assembly, and the locking seat 20 at the bottom of the container, realizing the limiting function of the limiting pin 2 and the locking function of the locking tongue assembly for the container. See [link to relevant documentation]. Figure 7.

[0026] The pin of the limit pin 2 moves upward and inserts into the limit hole of the locking seat 2 at the bottom of the container. The small clearance between the hole and the shaft realizes the constraint of the container's radial degree of freedom of the limit pin and transmits the load.

[0027] The locking tongue assembly is used to achieve unidirectional constraint of the container 19 along the axial direction of the limiting pin 2. It is combined with the frame of the supporting floor 18 to limit the movement of the container 19 along the axial direction of the limiting pin 2 and transmit axial load. The locking tongue assembly locks and unlocks with the lower locking plate of the bottom locking seat 2 of the container 19 as the limiting pin 2 moves up and down. When the limiting pin 2 moves upward, the locking tongue assembly moves inward toward the center of the limiting pin 2 to lock the locking seat 2 at the bottom of the container. When the limiting pin 2 moves downward, the locking tongue assembly moves outward away from the center of the limiting pin 2 to achieve the unlocking function.

[0028] It should be noted that the above-described embodiments are illustrative of this technical solution and not restrictive. Equivalent substitutions or other modifications made by those skilled in the art based on existing technology, as long as they do not exceed the scope and ideas of this technical solution, should be included within the scope of the claims made by this technical solution.

Claims

1. A limiting and locking structure, characterized in that, The device comprises a base, a limiting pin, and three locking tongue assemblies. The base is a flat plate structure with a protruding connecting seat fixed on its upper surface. The connecting seat has a central through-hole passing through the base, and three horizontal connecting lugs arranged radially around the central through-hole. A slotted through-hole is provided between each of the horizontal connecting lugs. The limiting pin passes through the central through-hole of the base. The upper part of the limiting pin is a round-headed pin, and the middle part of the limiting pin has three radially arranged connecting lugs perpendicular to the central axis of the limiting pin. These connecting lugs are located at the bottom... Below the base, the lower end of the limiting pin has a vertically downward connecting head; each latch assembly includes a latch and a rocker arm. The upper end of the latch has an inwardly bent constraint end, and the lower end of the latch has two connecting holes. The outer first connecting hole is hinged to the upper end of the rocker arm through a first pin, and the inner second connecting hole is hinged to the horizontal connecting ears on the connecting base through a second pin. The rocker arm passes through the slotted through hole on the base, and the lower end of the rocker arm is hinged to the connecting ear on the limiting pin through a third pin. The three latch assemblies are evenly connected to the base and the connecting ear on the limiting pin with the limiting pin as the center.

2. The limiting and locking structure as described in claim 1, characterized in that, The latch is an L-shaped structure with a first connecting hole at the bottom corner, a second connecting hole at the bottom end, and an inwardly bent constraint end at the top.

3. The limiting and locking structure as described in claim 1, characterized in that, The rocker arm is an arc-shaped rod structure, with connecting lugs at both ends.

4. The limiting and locking structure as described in claim 1, characterized in that, The base is provided with multiple connection holes, through which the base of the limiting and locking structure can be fixed to the support floor.

5. A method for limiting and locking a container inside an aircraft cabin, characterized in that... Includes the following: 1) The locking structure described in claim 1, 2, 3, or 4 is used to fix the base of the locking structure to the support floor of the aircraft; 2) The bottom of the container is provided with a locking seat, which has an I-shaped cross-section and includes an upper connecting plate and a lower locking plate. The upper connecting plate of the locking seat is fixed to the bottom of the container, and the lower locking plate of the locking seat is a circular plate that matches the locking tongue of the locking structure. The diameter of the lower locking plate is smaller than the inner diameter of the locking tongue in the open state. The bottom center of the lower locking plate of the locking seat is provided with a limiting hole that matches the limiting pin of the locking structure; 3) When locking the container, the limiting pin is first pulled downward by external force. When the limiting pin moves vertically downward, the limiting pin drives the locking tongue to rotate counterclockwise around the second pin shaft through the rocker arm. The restraint end at the front end of the locking tongue opens outward. Then the container is placed on the aircraft support floor. At the predetermined position of the plate, the locking seat at the bottom of the container is aligned with the connecting seat of the locking structure, and the limiting hole at the bottom of the container is coaxial with the central through hole of the connecting seat of the locking structure. Then, by external force, the limiting pin of the locking structure is pushed vertically upward, so that the upper end of the limiting pin enters the limiting hole at the bottom of the container through the central through hole. When the limiting pin moves vertically upward, it drives the locking tongue to rotate clockwise around the second pin shaft through the rocker arm. The restraining end at the front end of the locking tongue presses inward against the upper surface of the locking plate of the locking seat at the bottom of the container, thus locking and fixing the bottom of the container. 4) When releasing the locking of the container, the limiting pin is pulled downward by external force. The limiting pin drives the locking tongue to rotate counterclockwise around the second pin shaft through the rocker arm. The restraining end at the front end of the locking tongue opens outward, releasing the pressing and locking of the locking plate of the locking seat at the bottom of the container, thus separating the container from the locking structure.

6. The limiting and locking method for containers inside an aircraft cabin as described in claim 5, characterized in that, The lower end of the limiting pin is connected to the telescopic end of the actuating cylinder, and the actuating cylinder applies upward or downward force to the limiting pin.

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