Aircraft container tray tail pin

Abstract

The utility model relates to the technical field of airport freight, in particular to an aircraft container tray tail pin which comprises a fixing frame, a pin lifting assembly and an ejector rod assembly. The fixing frame comprises a vertical plate, and the vertical plate is fixedly provided with an upper plate, a middle plate and a lower plate. The lifting pin assembly comprises a lifting pin, the lifting pin penetrates through the upper plate, the middle plate, the lower plate and the spring support, the lifting pin is sleeved with a gasket, and the lifting pin is sleeved with a limiting spring; a vertical through hole is formed in the top of the lifting pin; a shifting block and an upper spring bolt are arranged in the vertical through hole, the shifting block is fixedly connected with a handle shaft, and the handle shaft is rotationally connected with a lifting pin; the upper spring bolt is rotationally connected with the lifting pin through a spring bolt pin; the ejector rod assembly comprises an ejector rod and an ejector rod lug, the ejector rod is rotationally connected with the ejector rod lug through an ejector rod pin, and the ejector rod penetrates through rectangular through holes formed in the middle plate, the lower plate and the vertical plate. The tail pin automatic bouncing locking device can achieve automatic bouncing locking fixing work of the tail pin, saves labor in operation, effectively improves working efficiency, and reduces labor intensity of operators at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of airport freight transportation, in particular to a tail pin of an aircraft container tray. Background Art

[0002] Airport container pallet is a transport trailer used in the field of airport freight, which can load cargo for transportation. When carrying out trailer operation, the trailer and pallet, and pallets need to be connected for towing, usually through the end pin.

[0003] Most of the existing connection devices between airport tow trucks are composed of a towing pin, a fixing frame and a U-shaped seat, which are connected to the mop of the rear vehicle through the towing pin. The towing pin does not have the function of automatically dropping and locking, and needs to be manually lifted by an operator and rotated before locking. When the mop of the rear vehicle moves below the towing pin, most of the existing connection devices require the operator to manually move the towing pin down and lock it. The manual locking method is prone to forgetting to lock, and it is not convenient to automatically lock and prevent it from falling when pulling up the towing pin.

[0004] The existing technology patents CN201020032933.6 (airport trailer rear tow hook), CN202020988648.5 (a solder-free anti-detachment device for the airport trailer rear tow hook pin), and CN202120018077.7 (a solder-free anti-detachment device for airport trailers) all use a lifting and rotating locking structure for locking and fixing, which has low work efficiency and cannot meet the use requirements. Utility Model Content

[0005] In order to solve the problems existing in the above-mentioned tail pin, the utility model designs a tail pin for an aircraft container tray, which can realize the automatic pop-up locking and fixing work of the tail pin. The specific technical scheme is as follows:

[0006] An aircraft container tray tail pin includes a fixing frame, a lifting pin assembly, and a push rod assembly:

[0007] The fixing frame comprises a vertical plate, the front side of which is fixedly mounted with an upper plate, a middle plate and a lower plate in order from top to bottom, the lower surface of the upper plate is fixedly connected with a spring support, and circular through holes are provided on the upper plate, the middle plate, the lower plate and the spring support, and the circular through holes are coaxially arranged;

[0008] The lifting pin assembly includes a lifting pin, the lifting pin is arranged through the circular through holes on the upper plate, the middle plate, the lower plate and the spring support, a washer fixedly connected to the lifting pin is sleeved on the lifting pin, the washer is arranged between the upper plate and the middle plate, and a limit spring located between the spring support and the washer is sleeved on the lifting pin; a vertical through hole and a first fixing hole and a second fixing hole passing through the vertical through hole are provided on the top of the lifting pin; a shift block and an upper locking tongue that cooperate with each other are provided in the vertical through hole, the shift block is fixedly connected to the handle shaft, the handle shaft passes through the first fixing hole and is rotatably connected to the lifting pin, handle brackets are symmetrically provided at both ends of the handle shaft, and a handle is fixedly installed on the top of the handle bracket; the upper locking tongue passes through the second fixing hole and is rotatably connected to the lifting pin through a locking tongue pin;

[0009] The push rod assembly includes a push rod and a push rod ear seat arranged at the bottom of the back side of the vertical plate. The push rod is rotatably connected to the push rod ear seat through a push rod pin. The push rod is arranged through rectangular through holes arranged on the middle plate, the lower plate and the vertical plate.

[0010] Preferably, the ends of the upper plate and the middle plate are fixedly connected to the arc-shaped plate.

[0011] Preferably, the lifting pin is further provided with a third fixing hole, the washer is provided with a fourth fixing hole, and the washer is fixedly connected to the lifting pin by the washer pin passing through the fourth fixing hole and the third fixing hole.

[0012] Furthermore, the gasket includes a horizontally arranged ring plate and a vertically arranged positioning tube, the positioning tube is provided with a fourth positioning hole, and the positioning tube is sleeved with a gasket cover plate.

[0013] Preferably, the shift block includes a first rotating portion fixedly connected to the handle shaft, the first rotating portion is provided with a vertical stop portion and two symmetrically arranged first limiting portions, and the first limiting portions are arranged on both sides of the abutment point where the first rotating portion and the top surface of the vertical through hole abut each other.

[0014] Furthermore, the upper lock tongue includes a second rotating part fixedly connected to the lock tongue pin, a long handle part is provided on the top of the second rotating part, and a first cross block part perpendicular to the long handle part is also provided on the second rotating part, the bottom end of the second rotating part abuts against the bottom surface of the vertical through hole, and a second limiting part located on the second rotating part is provided at a diagonal position of the first cross block part; the long handle part is in contact with the vertical block part.

[0015] Preferably, a second cross block is provided on the top of the push rod.

[0016] Preferably, the spring support is welded to the upper plate.

[0017] Preferably, the top rod is an L-shaped structure.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] (1) Different from the traditional trailer tail pin that needs to be lifted and rotated before locking, the utility model only needs to be lifted to the limit position to achieve the locking of the lifting pin, which saves time and effort, does not require the operator to make unnecessary movements, and avoids the risk of injury caused by the lifting pin falling due to missed movements.

[0020] (2) Different from the docking mode between the traditional trailer tail pins, which requires aligning the through holes and then lifting the rotating handle again before putting it down, the utility model can make the lifting pin automatically fall down by hitting the top rod, and the size is consistent, so there is no need to deliberately adjust the docking, which is convenient for the operator.

[0021] (3) Different from the traditional trailer tail pin which has no anti-jumping device or a light anti-jumping device, the utility model restrains the lifting pin to prevent jumping by naturally restraining the lifting pin in a flat state by the handle bracket. Since the lifting pin is basically impossible to be in an upright state under impact, the safety factor of anti-jumping is very high, which can effectively avoid the problem of unhooking of the trailer connection and ensure the safety of airport cargo operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0023] Figure 1 This is a schematic diagram of the overall structure of the tail pin of the utility model Figure 1 .

[0024] Figure 2 This is a schematic diagram of the overall structure of the tail pin of the utility model Figure 2 .

[0025] Figure 3 This is a schematic diagram of the lifting pin assembly structure of the tail pin of the towing tray of the utility model Figure 1 .

[0026] Figure 4 This is a schematic diagram of the lifting pin assembly structure of the tail pin of the towing tray of the utility model Figure 2 .

[0027] Figure 5 The utility model is a schematic diagram of the matching structure of the upper locking tongue and the shifting block of the tail pin of the towing tray.

[0028] Figure 6 The utility model is a schematic diagram of the lifting pin structure of the tail pin of the towing tray.

[0029] Figure 7 The utility model is a schematic diagram of the washer structure of the tail pin of the towing tray.

[0030] In the figure: 1, vertical plate; 2, upper plate; 3, middle plate; 4, lower plate; 5, gasket; 6, gasket cover plate; 7, spring support; 8, lifting pin; 9, limiting spring; 10, first fixing hole; 11, second fixing hole; 12, shift block; 13, upper lock tongue; 14, handle shaft; 15, handle bracket; 16, handle; 17, push rod ear seat; 18, push rod; 19, arc plate; 20, third fixing hole; 21, fourth fixing hole; 22, first limiting part; 23, long handle part; 24, vertical stop part; 25, first horizontal stop part; 26, second horizontal stop part; 27, lock tongue pin; 28, washer pin; 29, vertical through hole; 30, second limiting part; 31, first rotating part; 32, second rotating part; 33, ring plate; 34, positioning cylinder. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0032] See also Figures 1 to 7 , an embodiment provided by the utility model is as follows:

[0033] An aircraft container tray tail pin includes a fixing frame, a lifting pin assembly, and a push rod assembly:

[0034] The fixing frame includes a vertical plate 1, and an upper plate 2, a middle plate 3, and a lower plate 4 are fixedly installed on the front of the vertical plate 1 in sequence from top to bottom. The ends of the upper plate 2 and the middle plate 3 are fixedly connected to the arc plate 19. A spring support 7 is welded on the lower surface of the upper plate 2. The upper plate 2, the middle plate 3, the lower plate 4 and the spring support 7 are all provided with circular through holes, and the circular through holes are coaxially arranged.

[0035] The lifting pin assembly includes a lifting pin 8, which passes through the circular through holes on the upper plate 2, the middle plate 3, the lower plate 4 and the spring support 7. A washer 5 fixedly connected to the lifting pin 8 is sleeved on the lifting pin 8, and the washer 5 is arranged between the upper plate 2 and the middle plate 3. A limit spring 9 located between the spring support 7 and the washer 5 is sleeved on the lifting pin 8; a vertical through hole 29 and a first fixing hole 10 and a second fixing hole 11 passing through the vertical through hole 29 are provided on the top of the lifting pin 8; a shift block 12 and an upper locking tongue 13 that cooperate with each other are provided in the vertical through hole 29, the shift block 12 is fixedly connected to the handle shaft 14, the handle shaft 14 passes through the first fixing hole 10 and is rotatably connected to the lifting pin 8, and handle brackets 15 are symmetrically provided at both ends of the handle shaft 14, and a handle 16 is fixedly installed on the top of the handle bracket 15; the upper locking tongue 13 passes through the second fixing hole 11 and is rotatably connected to the lifting pin 8 through the locking tongue pin 27;

[0036] Specifically, the lifting pin 8 is also provided with a third fixing hole 20, and the washer 5 is provided with a fourth fixing hole 21. The washer 5 is fixedly connected to the lifting pin 8 by the washer pin 28 passing through the fourth fixing hole 21 and the third fixing hole 20. At the same time, the washer 5 includes a horizontally arranged ring plate 33 and a vertically arranged positioning cylinder 34. The positioning cylinder 34 is provided with a fourth positioning hole 21, and the positioning cylinder 34 is sleeved with a washer cover plate 6.

[0037] Preferably, the shift block 12 includes a first rotating portion 31 fixedly connected to the handle shaft 14, and a vertical stop portion 24 and two symmetrically arranged first limit portions 22 are provided on the first rotating portion 31, and the first limit portions 22 are arranged on both sides of the abutment point where the first rotating portion 31 and the top surface of the vertical through hole 29 abut against each other, so as to achieve fixed locking of the lifting pin assembly and the fixing seat;

[0038] At the same time, the upper lock tongue 13 includes a second rotating portion 32 fixedly connected to the lock tongue pin 27, a long handle portion 23 is provided at the top of the second rotating portion 32, and a first cross block portion 25 perpendicular to the long handle portion 23 is also provided on the second rotating portion 32, the bottom end of the second rotating portion 32 abuts against the bottom surface of the vertical through hole 29, and a second limiting portion 30 located on the second rotating portion is provided at a diagonal position of the first cross block portion 25; the long handle portion 23 is in contact and connected with the vertical block portion 24.

[0039] It is worth mentioning that the first limiting portion 22 on the shift block 12 will limit the excessive rotation of the handle 16. During the rotation of the handle 16, the first limiting portion 22 will contact the inner top surface of the vertical through hole 29 and cannot continue to rotate. At the same time, when the shift block 12 drives the upper lock tongue 13 to rotate, the second limiting portion 30 will limit the excessive rotation of the upper lock tongue 13, and the third limiting portion 30 will contact the inner bottom surface of the vertical through hole 29 to play a limiting role.

[0040] The push rod assembly includes a push rod 18 and a push rod ear seat 17 arranged at the bottom of the back side of the vertical plate 1. The push rod 18 is rotatably connected to the push rod ear seat 17 through a push rod pin. The push rod 18 passes through the rectangular through holes set on the middle plate 3, the lower plate 4, and the vertical plate 1 to achieve the upward limit of the pin before the trailer and the towing tray, and the towing trays are connected. Specifically, the push rod 18 is an L-shaped structure, and a second cross block 26 is provided on the top of the push rod 18.

[0041] Working principle:

[0042] When the tray is unlocked, when in the locked state, the handle bracket 15 is in a horizontal position, the long handle 23 of the shift block 12 contacts the upper lock tongue 13 but does not generate any force, and the upper lock tongue 13 will be horizontally placed at the bottom of the vertical through hole 29 due to gravity. At this time, the long handle 23 of the upper lock tongue 13 is in a vertical state, and the first cross block 25 of the upper lock tongue 13 will protrude the lifting pin 8. The first cross block 25 will contact the bottom of the upper plate 2 during the lifting process and be limited by the upper plate 2 to achieve anti-jumping and complete the tail pin fixing and locking work.

[0043] Before the tray is docked (i.e. locked), the handle bracket 15 is pulled to the vertical direction, the handle bracket 15 will drive the handle shaft 14 to rotate together, the handle shaft 14 will drive the shift block 12 to rotate, the vertical stop 24 on the shift block 12 will touch the long handle 23 of the upper locking tongue 13 in the vertical state during the rotation process, the upper locking tongue 13 will move together under the external force of the shift block 12, at this time the first cross block 25 of the upper locking tongue 13 will be retracted into the rectangular through hole 29, and will no longer be limited by the upper plate 2 during the process of lifting the lifting pin assembly. At this time, hold the handle 16 to lift the lifting pin assembly, the limit spring 9 will be compressed during the lifting process of the lifting pin assembly, when the washer 5 touches the second cross block 25 of the push rod 18 When the washer 5 completely passes over the top rod 18, the top rod 18 returns to its initial position due to gravity. At this time, the handle 16 is released, and the compressed limit spring 9 drives the lifting pin assembly to move downward. The washer 5 is limited and fixed on the top of the second cross block 26 of the top rod 18. At this time, there is no lifting pin 8 between the middle plate 3 and the lower plate 4. The tow tray or the mop of the trailer that needs to be docked can be placed between the middle plate 3 and the lower plate 4. The mop hits the top rod 18, and the top rod 18 releases the limit on the washer 5. The washer 5 falls due to the action of the limit spring 9, and automatic docking can be achieved without human unlocking and lowering.

[0044] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An aircraft container tray tail pin, characterized in that: Including fixed frame, lifting pin assembly, and ejector assembly: The fixing frame comprises a vertical plate (1), the front side of the vertical plate (1) is fixedly mounted with an upper plate (2), a middle plate (3), and a lower plate (4) in sequence from top to bottom, the lower surface of the upper plate (2) is fixedly connected to a spring support (7), and the upper plate (2), the middle plate (3), the lower plate (4) and the spring support (7) are all provided with circular through holes, and the circular through holes are coaxially arranged; The lifting pin assembly comprises a lifting pin (8), the lifting pin (8) is arranged through circular through holes on the upper plate (2), the middle plate (3), the lower plate (4) and the spring support (7), a washer (5) fixedly connected to the lifting pin (8) is sleeved on the lifting pin (8), the washer (5) is arranged between the upper plate (2) and the middle plate (3), and a limit spring (9) located between the spring support (7) and the washer (5) is sleeved on the lifting pin (8); a vertical through hole (29) and a first fixing hole (10) and a first fixing hole (11) penetrating the vertical through hole (29) are provided on the top of the lifting pin (8). two fixing holes (11); a shift block (12) and an upper lock tongue (13) which cooperate with each other are arranged in the vertical through hole (29); the shift block (12) is fixedly connected to the handle shaft (14); the handle shaft (14) passes through the first fixing hole (10) and is rotatably connected to the lifting pin (8); handle brackets (15) are symmetrically arranged at both ends of the handle shaft (14); a handle (16) is fixedly installed on the top of the handle bracket (15); the upper lock tongue (13) passes through the second fixing hole (11) and is rotatably connected to the lifting pin (8) via a lock tongue pin (27); The push rod assembly comprises a push rod (18) and a push rod ear seat (17) arranged at the bottom of the back side of the vertical plate (1); the push rod (18) is rotatably connected to the push rod ear seat (17) via a push rod pin; and the push rod (18) passes through rectangular through holes arranged on the middle plate (3), the lower plate (4) and the vertical plate (1).

2. The aircraft container tray tail pin according to claim 1, characterized in that: The ends of the upper plate (2) and the middle plate (3) are fixedly connected to an arc-shaped plate (19).

3. The aircraft container tray tail pin according to claim 1, characterized in that: The lifting pin (8) is also provided with a third fixing hole (20), the washer (5) is provided with a fourth fixing hole (21), and the washer (5) is fixedly connected to the lifting pin (8) via a washer pin (28) passing through the fourth fixing hole (21) and the third fixing hole (20).

4. The aircraft container tray tail pin according to claim 3, characterized in that: The gasket (5) comprises a horizontally arranged ring plate (33) and a vertically arranged positioning tube (34); a fourth fixing hole (21) is provided on the positioning tube (34); and a gasket cover plate (6) is sleeved on the positioning tube (34).

5. The aircraft container tray tail pin according to claim 1, characterized in that: The shift block (12) comprises a first rotating portion (31) fixedly connected to the handle shaft (14); the first rotating portion (31) is provided with a vertical stop portion (24) and two symmetrically arranged first limiting portions (22); the first limiting portions (22) are arranged on both sides of a contact point where the first rotating portion (31) and the top surface of the vertical through hole (29) abut against each other.

6. The aircraft container tray tail pin according to claim 5, characterized in that: The upper lock tongue (13) comprises a second rotating portion (32) fixedly connected to the lock tongue pin (27); a long handle portion (23) is provided at the top of the second rotating portion (32); a first transverse block portion (25) perpendicular to the long handle portion (23) is also provided on the second rotating portion (32); the bottom end of the second rotating portion (32) abuts against the bottom surface of the vertical through hole (29); a second limiting portion (30) located on the second rotating portion is provided at a diagonal position of the first transverse block portion (25); and the long handle portion (23) is in contact with the vertical block portion (24).

7. The aircraft container tray tail pin according to claim 1, characterized in that: A second cross block (26) is provided on the top of the push rod (18).

8. The aircraft container tray tail pin according to claim 1, characterized in that: The spring support (7) is welded to the upper plate (2).

9. The aircraft container tray tail pin according to claim 1, characterized in that: The top rod (18) is an L-shaped structure.

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