An adaptive vertical restraint device for cargo aircraft

Abstract

The present invention discloses an adaptive vertical limit device for cargo aircraft, comprising a lock tongue, a base, a first limit column, a sleeve, a leaf spring, a gasket, a nut, a pin, a second limit column, a gasket, a first boss and a second boss, wherein a gasket is arranged at the end of the lock tongue; the lock tongue is fixedly connected to the sleeve through a pin; the sleeve is clamped with the leaf spring; the sleeve and the leaf spring are inside the base; the lock tongue is fixedly connected to the base through a gasket and a nut; and the base is provided with a first limit column and a second limit column. The beneficial effect of the invention is that the limit device can realize vertical limit and can automatically return to its original position after rotation, which can not only meet the limit requirements, but also save weight, reduce the workload of personnel, and improve work efficiency.

Description

Technical Field

[0001] The invention relates to the field of restraining devices, and in particular to an adaptive vertical restraining device for a cargo aircraft. Background Art

[0002] The use of standardized, modernized, and standardized cargo loading systems can save manpower and shorten downtime. Improve the economic benefits of aircraft. At present, the civil aviation cargo system has relevant standard requirements for the specifications of container units and their guidance, limiting and other requirements. The front and rear limits of large container pallets are achieved by limiting devices on both sides, and their number is about 1 / 3 to 1 / 2 of the total number of limiting devices. The limiting device that can achieve front and rear limits needs to be manually extended after the container pallet is installed in place. If this type of limiting device is used, it will lead to a large amount of personnel operation. Since the goods loaded on the container pallet are tied with a mooring net or a mooring belt, when the mooring belt has redundant length to drag, it is easy to hook with the side limiting device. At the same time, the strength required to achieve front and rear limits is relatively high. If only vertical limits are achieved, it can effectively save product weight and improve aircraft use efficiency.

[0003] Therefore, it is very necessary to invent a limiting device that can achieve vertical limiting and automatically return to its original position after rotation, which can not only meet the limiting requirements, but also save weight, reduce the workload of personnel, and improve work efficiency. Summary of the invention

[0004] The invention provides an adaptive vertical limit device for a cargo aircraft, which can solve the problems in the prior art that workers have to operate a large amount of work, are easily hooked on the limit device on the side, and are time-consuming and labor-intensive.

[0005] The present invention provides an adaptive vertical limit device for a cargo aircraft, comprising a locking tongue, a base, a first limiting column, a sleeve, a leaf spring, a gasket, a nut, a pin shaft, a second limiting column, a gasket, a first boss and a second boss, wherein a gasket is arranged at the end of the locking tongue; the locking tongue is fixedly connected to the sleeve through a pin shaft; the sleeve is clamped with the leaf spring; the sleeve and the leaf spring are inside the base; the locking tongue is fixedly connected to the base through a gasket and a nut; and the base is provided with a first limiting column and a second limiting column.

[0006] Preferably, through holes adapted to the pin are provided on both side walls of the base; a through hole adapted to the pin is provided on the locking tongue; and a through hole adapted to the pin is provided on the sleeve.

[0007] Preferably, a groove adapted to the leaf spring is provided inside the base.

[0008] Preferably, the locking tongue, sleeve and leaf spring are coaxial.

[0009] Preferably, a first boss is provided on the sleeve; a notch adapted to the first boss is provided on the leaf spring; and the first boss of the sleeve is embedded in the notch of the leaf spring.

[0010] Preferably, two second bosses are provided on the base; a notch adapted to the second bosses is provided on the leaf spring; and the second bosses on the base are embedded in the notch of the leaf spring.

[0011] The adaptive vertical limiting device for a cargo aircraft provided by the present invention is fixed on the side guide rail through the base. When the container pallet is being loaded, it first contacts the locking tongue. The locking tongue rotates counterclockwise under the action of the pallet (as Figure 4 shown). The rotation of the locking tongue drives the pin shaft to rotate, and the pin shaft drives the sleeve to rotate. The first boss embedded in the leaf spring by the sleeve will drive the leaf spring to twist. Since there are also two second bosses on the base embedded in the notch of the leaf spring, when the leaf spring rotates, one end of the notch starts to rotate under the drive of the boss of the sleeve, while the other end of the notch is limited by the boss of the base and cannot move. At this time, the leaf spring deforms and has a torsional moment (as Figure 5 shown). The moment is transmitted to the locking tongue through the sleeve and the pin shaft; during the movement of the pallet, the locking tongue always remains in contact with the pallet (as Figure 6 shown). When the pallet moves to a position where the limiting notch is opposite to the locking tongue (as Figure 7 shown), the locking tongue returns under the torsional moment of the leaf spring (as Figure 8 shown), realizing the vertical limiting of the pallet (as Figure 4 shown). When the pallet continues to move, the limiting device will repeat the above process: rotate - hold - return until the pallet moves to a predetermined position, achieving vertical limiting, and the limiting device that can automatically return after rotation can not only meet the limiting requirements, but also save weight, reduce the workload of personnel, improve work efficiency, and when the locking tongue rotates, when it rotates to the position of the first limiting column or the second limiting column, it stops rotating to protect the leaf spring from being damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural diagram of an adaptive vertical limiting device for a cargo aircraft provided by the present invention;

[0013] Figure 2 is a cross-sectional view of an adaptive vertical limiting device for a cargo aircraft provided by the present invention;

[0014] Figure 3 is a schematic diagram after rotation of an adaptive vertical limiting device for a cargo aircraft provided by the present invention;

[0015] Figure 4 is a schematic working diagram of an adaptive vertical limiting device for a cargo aircraft provided by the present invention;

[0016] Figure 5 A cargo tray rotation structure diagram of a cargo aircraft adaptive vertical limit device provided by the present invention;

[0017] Figure 6 A schematic diagram of the leaf spring action of an adaptive vertical restraint device for a cargo aircraft provided by the present invention;

[0018] Figure 7 A structural diagram of a cargo tray returning to its original position at a container limit opening of an adaptive vertical limit device for a cargo aircraft provided by the present invention;

[0019] Figure 8 A structural diagram of the return state of a restraining device of an adaptive vertical restraining device for a cargo aircraft provided by the present invention.

[0020] Explanation of the reference numerals: 1-lock tongue; 2-base; 3-first limiting column; 4-sleeve; 5-leaf spring; 6-gasket; 7-nut; 8-pin shaft; 9-second limiting column; 10-gasket; 401-first boss; 201-second boss. DETAILED DESCRIPTION

[0021] A specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation.

[0022] like Figures 1 to 8 As shown, an adaptive vertical limit device for a cargo aircraft provided by an embodiment of the present invention comprises a lock tongue 1, a base 2, a first limit column 3, a sleeve 4, a leaf spring 5, a gasket 6, a nut 7, a pin 8, a second limit column 9, a gasket 10, a first boss 401 and a second boss 201, wherein a gasket 10 is arranged at the end of the lock tongue 1; the lock tongue 1 is fixedly connected to the sleeve 4 through the pin 8; the sleeve 4 is clamped with the leaf spring 5; the sleeve 4 and the leaf spring 5 are inside the base 2; the lock tongue 1 is fixedly connected to the base 2 through the gasket 6 and the nut 7; and the base 2 is provided with a first limit column 3 and a second limit column 9.

[0023] Preferably, through holes adapted to the pin shaft 8 are provided on both side walls of the base 2 ; a through hole adapted to the pin shaft 8 is provided on the locking tongue 1 ; and a through hole adapted to the pin shaft 8 is provided on the sleeve 4 .

[0024] Preferably, a groove adapted to the leaf spring 5 is provided inside the base 2 .

[0025] Preferably, the locking tongue 1, sleeve 4 and leaf spring 5 are coaxial.

[0026] Preferably, the sleeve 4 is provided with a first boss 401 ; the leaf spring 5 is provided with a notch corresponding to the first boss 401 ; and the first boss 401 of the sleeve 4 is embedded in the notch of the leaf spring 5 .

[0027] Preferably, two second bosses 201 are provided on the base 2 ; a notch adapted to the second boss 201 is provided on the leaf spring 5 ; and the second boss 201 on the base 2 is embedded in the notch of the leaf spring 5 .

[0028] Working principle: The self-adaptive vertical restraint device for cargo aircraft is fixed on the side rail through the base 2. When the container pallet is loaded, it first contacts the lock tongue 1, and the lock tongue 1 rotates counterclockwise under the action of the pallet (such as Figure 4 As shown). The rotation of the lock tongue 1 drives the pin 8 to rotate, and the pin 8 drives the sleeve 4 to rotate. The first boss 401 of the sleeve 4 embedded in the leaf spring 5 drives the leaf spring 5 to twist. Since there are also two second bosses 201 on the base 2 embedded in the notch of the leaf spring 5, when the leaf spring rotates, one end of the notch starts to rotate under the drive of the boss 401 of the sleeve 4, while the other end of the notch is limited by the boss 201 of the base 2 and cannot move. At this time, the leaf spring 5 is deformed and has a torsional moment (as shown). Figure 5 As shown). The torque is transmitted to the lock tongue 1 through the sleeve 4 and the pin 8; during the movement of the pallet, the lock tongue 1 always maintains contact with the pallet (as shown Figure 6 When the pallet moves until the limit notch is opposite to the lock tongue 1 (as shown in Figure 7 As shown in FIG. 1 ), the lock tongue 1 returns to its original position under the torsional torque of the leaf spring 5 (as shown in FIG. Figure 8 As shown), to achieve vertical movement restriction of the pallet (such as Figure 3 ). When the pallet continues to move, the limiting device will repeat the above process: rotation-maintaining-returning until the pallet moves to the predetermined position, which can realize vertical limiting. The limiting device that can automatically return to its position after rotation can not only meet the limiting requirements, but also save weight, reduce the workload of personnel, and improve work efficiency. In addition, when the lock tongue 1 rotates to the position of the first limiting column 3 or the second limiting column 9 during the rotation process, it stops rotating to protect the leaf spring from being damaged.

[0029] The above disclosure is only a specific embodiment of the present invention, but the embodiments of the present invention are not limited thereto, and any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. An adaptive vertical restraint device for cargo aircraft, Features: The invention comprises a lock tongue (1), a base (2), a first limiting column (3), a sleeve (4), a leaf spring (5), a first gasket (6), a nut (7), a pin shaft (8), a second limiting column (9), a second gasket (10), a first boss (401) and a second boss (201), wherein the end of the lock tongue (1) is provided with a gasket (10); the lock tongue (1) is fixedly connected to the sleeve (4) through the pin shaft (8); the sleeve (4) is clamped with the leaf spring (5); the sleeve (4) and the leaf spring (5) are inside the base (2); the lock tongue (1) is fixedly connected to the base (2) through the first gasket (6) and the nut (7); the base (2) is provided with a first limiting column (3) and a second limiting column (9); the sleeve (4) is provided with a first boss (401); and the base (2) is provided with two second bosses (201).

2. An adaptive vertical restraint device for a cargo aircraft as claimed in claim 1, It is characterized in that The two side walls of the base (2) are provided with through holes adapted to the pin shaft (8); the locking tongue (1) is provided with a through hole adapted to the pin shaft (8); and the sleeve (4) is provided with a through hole adapted to the pin shaft (8).

3. The adaptive vertical restraint device for a cargo aircraft as claimed in claim 1, It is characterized in that A groove adapted to the leaf spring (5) is arranged inside the base (2).

4. The adaptive vertical restraint device for a cargo aircraft as claimed in claim 1, It is characterized in that The locking tongue (1), the sleeve (4) and the leaf spring (5) are coaxial.

5. The adaptive vertical restraint device for a cargo aircraft as claimed in claim 1, It is characterized in that The sleeve (4) is provided with a first boss (401); the leaf spring (5) is provided with a notch adapted to the first boss (401); and the first boss (401) of the sleeve (4) is embedded in the notch of the leaf spring (5).

6. The adaptive vertical restraint device for a cargo aircraft as claimed in claim 1, It is characterized in that The base (2) is provided with two second bosses (201); the leaf spring (5) is provided with a notch adapted to the second bosses (201); and the second bosses (201) on the base (2) are embedded in the notches of the leaf spring (5).

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