Storage box for safety pin and airspeed tube sleeve of aircraft landing gear

Abstract

The invention relates to the technical field of aircraft protection, in particular to an aircraft landing gear safety pin and airspeed tube sleeve storage box which comprises a main shell, an airspeed tube sleeve storage mechanism, a safety pin storage mechanism and a spacing area, and the airspeed tube sleeve storage mechanism, the safety pin storage mechanism and the spacing area are located in the main shell. The main shell, the airspeed sleeve storage mechanism and the safety pin mechanism are all of semi-closed structures, the main shell is provided with a top opening and a side wall opening, a first insertion hole is formed in the position, close to the top opening, of the airspeed sleeve storage mechanism, and a second insertion hole is formed in the position, close to the top opening, of the safety pin storage mechanism. The airspeed tube sleeve storage mechanism comprises a first transparent flame-retardant plate, the safety pin storage mechanism comprises a second transparent flame-retardant plate, and projections of the first transparent flame-retardant plate and the second transparent flame-retardant plate fall in an area jointly formed by the top opening and the side wall opening. Compared with the prior art, the device has the advantages of effectively reducing the storage and checking error rate of the safety pin and the airspeed pipe sleeve, improving the working environment and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of aircraft protection, and particularly to an aircraft landing gear safety pin and an airspeed tube cover storage box. Background Art

[0002] The civil aviation aircraft landing gear safety pin is a device provided to prevent the accidental retraction of the landing gear due to human error when the aircraft is on the ground. Each landing gear of the aircraft has at least one safety pin. When the aircraft is being maintained on the ground, the maintenance personnel insert the safety pin into the bending point of the landing gear to ensure that the landing gear of the aircraft will not be accidentally retracted on the ground, and to avoid damage to personnel, equipment, and the aircraft. The civil aviation aircraft airspeed tube cover is a ground protection device for the aircraft airspeed tube. During the parking period of the aircraft, covering the aircraft with an airspeed tube cover can prevent foreign objects from entering the airspeed tube, thereby avoiding incorrect airspeed indication caused by foreign objects entering.

[0003] According to relevant civil aviation regulations, before the aircraft takes off, it is necessary to ensure that all landing gear safety pins and airspeed tube covers are removed. Otherwise, after takeoff, the landing gear may be stuck by the safety pin and cannot be retracted, and the airspeed indicator may be abnormal, resulting in the need for an emergency return flight. Therefore, before the aircraft takes off, the maintenance personnel will pull out the landing gear safety pins and airspeed tube covers, hand them over to the flight crew, and store the landing gear safety pins and airspeed tube covers in the cockpit, which is jointly supervised by the ground maintenance personnel and the flight crew. Thus, it is crucial to install and remove the aircraft landing gear safety pins and airspeed tube covers in a timely manner. In the past, this work relied on manual counting one by one. However, the omission of installing safety pins and airspeed tube covers and the forgetting to pull out safety pins and airspeed tube covers have occurred many times globally, even resulting in plane crashes and deaths.

[0004] The original storage method for landing gear safety pins and airspeed tube covers is to store them in a cloth bag. This method has the following defects: (1) Since the landing gear safety pins and airspeed tube covers are tied with streamers, it is not conducive to counting when stored in a cloth bag; (2) If taken out one by one from the cloth bag for inventory, the efficiency is low, and the surface of the landing gear safety pin is oily. This is not only not conducive to inventory, but also will contaminate the hands of personnel. Therefore, how to reduce the error rate of storing and inventorying landing gear safety pins and airspeed tube covers, while improving the inventory efficiency and the working environment of relevant personnel, has become a problem to be solved in this field. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above-mentioned defects existing in the prior art and provide a storage box for aircraft landing gear safety pins and airspeed tube covers, which can effectively reduce the error rate of storing and inventorying landing gear safety pins and airspeed tube covers, while improving the convenience and cleanliness of inventory, thereby improving the safety of aircraft navigation and reducing the incidence of safety accidents caused by errors in inventorying landing gear safety pins and airspeed tube covers.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] The present invention provides an aircraft landing gear safety pin and airspeed tube cover storage box, which includes a main housing, and further includes an airspeed tube cover storage mechanism, a safety pin storage mechanism and a spacer area located inside the main housing. The spacer area is located between the airspeed tube cover storage mechanism and the safety pin storage mechanism. The main housing, the airspeed tube cover storage mechanism and the safety pin mechanism are all semi-enclosed structures.

[0008] The main housing is provided with a top opening and a side wall opening. The airspeed tube cover storage mechanism opens a first jack near the top opening, and the safety pin storage mechanism opens a second jack near the top opening. The airspeed tube cover storage mechanism includes a first transparent flame retardant plate, and the safety pin storage mechanism includes a second transparent flame retardant plate. The projections of the first transparent flame retardant plate and the second transparent flame retardant plate both fall within the area jointly formed by the top opening and the side wall opening.

[0009] As a preferred technical solution, the airspeed tube cover storage mechanism further includes a first fixing plate, on which the first jack is opened. The first fixing plate is fixedly connected to the inner wall of the main housing near the top opening. The first transparent flame retardant plate is fixedly connected to the side wall of the first fixing plate and is in close contact with the inner wall of the main housing.

[0010] As a preferred technical solution, the safety pin storage mechanism further includes a second fixing plate, a third fixing plate, a third transparent flame retardant plate and a slot. The second fixing plate is provided with the second jack and is fixedly connected to the inner wall of the main housing near the top opening and the side wall opening. The third fixing plate is provided with a third jack and is fixedly connected to the inner wall of the main housing near the bottom of the main housing. The slot is provided with a fourth jack and is fixedly connected to the inner wall of the main housing and is located between the second fixing plate and the third fixing plate.

[0011] The second fixing plate includes a first section and a second section. The projection of the second jack on the third fixing plate in the first section overlaps with the position of the third jack. The projection of the second jack on the slot in the second section overlaps with the position of the fourth jack. The second transparent flame retardant plate and the third transparent flame retardant plate are respectively fixedly connected to both sides of the second fixing plate and are respectively fixedly connected to both sides of the third fixing plate at the same time.

[0012] As a preferred technical solution, one of the second transparent flame retardant plate and the third transparent flame retardant plate is clamped at the side wall opening.

[0013] As a preferred technical solution, the fixed connection includes bolt-nut connection.

[0014] As a preferred technical solution, the main housing includes a gripping mechanism, and the gripping mechanism is integrally connected or detachably connected to the main housing.

[0015] As a preferred technical solution, the storage box is prepared by additive manufacturing.

[0016] As a preferred technical solution, the raw material for the additive manufacturing is a flame-retardant engineering plastic.

[0017] As a preferred technical solution, the sizes of the first jack and the second jack are respectively determined by the sizes of the pitot tube sleeve and the safety pin of the actual aircraft landing gear.

[0018] As a preferred technical solution, there are multiple second jacks, and the quantity is determined by the number of safety pins of the actual aircraft landing gear.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The pitot tube sleeve storage mechanism and the safety pin storage mechanism of the present invention both adopt transparent flame-retardant panels, and the components to be handed over are assembled in the same storage box, which is convenient for relevant staff to observe and count. Each staff member in the handover process can conveniently and quickly check the quantities of the pitot tube sleeve and the safety pin, which can effectively prevent errors caused by human factors, improve the convenience of inventory taking, reduce the error rate of inventory taking, and thus improve the safety of aircraft navigation and reduce the incidence of safety accidents;

[0021] 2. The main housing, the pitot tube sleeve storage mechanism and the safety pin mechanism adopted by the present invention are all semi-closed structures. Except for the top opening and the side wall opening of the main housing, the first jack of the pitot tube sleeve storage mechanism and the second jack of the safety pin mechanism, the pitot tube sleeve storage area and the safety pin storage area are all sealed. Since the pitot tube sleeve of the landing gear safety pin is often contaminated with oil and dust, direct handover and inventory taking will cause the hands to be soiled. Therefore, the semi-closed design can effectively prevent relevant staff from contacting the oil and dust contaminated on the pitot tube sleeve of the landing gear safety pin, and greatly improves the working environment;

[0022] 3. In the present invention, the sizes of the first jack and the second jack are respectively determined by the sizes of the pitot tube sleeve and the safety pin of the actual aircraft landing gear, and the number of the second jacks can also be determined according to the number of safety pins of the actual aircraft. That is to say, the whole storage box is customized for the pitot tube sleeve and the safety pin of the aircraft landing gear of different models. Therefore, it is only necessary to check whether the sockets of the pitot tube sleeve and the safety pin storage box of the landing gear are full to know whether the work has been completed, which further improves the convenience of inventory taking, reduces the possibility of human errors, and improves safety;

[0023] 4. The present invention is prepared by additive manufacturing, and the raw material is a flame-retardant engineering plastic. It achieves high strength, lightweight, and low cost as a whole. Therefore, it is easy to manufacture, has no mold opening cost, is suitable for small-batch and multi-model manufacturing, and better meets the needs of airlines.

[0024] 5. The present invention is provided with a grasping mechanism and is lightweight, which is convenient for staff to carry and observe and count at any time to confirm whether the quantity of handover is qualified. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of the present invention;

[0026] Wherein: 1, main housing; 2, airspeed tube sheath storage mechanism; 3, safety pin storage mechanism; 11, top opening; 12, side wall opening; 21, first transparent flame-retardant plate; 22, first fixing plate; 221, first jack; 31, second transparent flame-retardant plate; 32, third transparent flame-retardant plate; 33, second fixing plate; 34, third fixing plate; 35, slot; 331, second jack; 332, first section; 333, second section; 341, third jack; 351, fourth jack. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 creative efforts shall fall within the protection scope of the present invention.

[0028] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0029] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more, unless otherwise specifically defined.

[0030] Example

[0031] like Figure 1 As shown, this embodiment provides an aircraft landing gear safety pin and pitot tube sleeve storage box, including a main shell 1, a pitot tube sleeve storage mechanism 2 located inside the main shell, a safety pin storage mechanism 3 and a spacing area, the spacing area is located between the pitot tube sleeve storage mechanism 2 and the safety pin storage mechanism 3, the main shell 1, the pitot tube sleeve storage mechanism 2 and the safety pin mechanism 3 are all semi-enclosed structures.

[0032] The main housing 1 is provided with a top opening 11 and a side wall opening 12 .

[0033] The pitot tube sleeve storage mechanism 2 includes a first transparent flame retardant plate 21 and a first fixed plate 22. The first fixed plate 22 is located near the top opening 11 and has a first plug hole 221. The first plug hole 221 is used to insert and store the pitot tube sleeve. The first fixed plate 22 is fixedly connected to the inner wall of the main shell 1 near the top opening 11 by a hexagonal nut and a matching bolt. The first transparent flame retardant plate 21 is fixedly connected to the side wall of the first fixed plate 22 near the side wall opening 12 by a bolt-nut, and is in close contact with the inner wall of the main shell 1. In this embodiment, the side wall of the first fixed plate 22 away from the side wall opening 12 is fixedly connected to the inner wall of the main shell 1, and the side wall of the main shell 1 opposite to the first transparent flame retardant plate 21 is also composed of a transparent flame retardant plate. The first transparent flame-retardant plate 21, the first fixed plate 22, and part of the side wall of the main housing 1 (the part opposite to the first transparent flame-retardant plate 21) together constitute a semi-enclosed pitot tube sleeve storage mechanism 2, and the area where the first plug hole 221 is located is the opening part of the pitot tube sleeve storage mechanism 2. In this embodiment, one pitot tube sleeve plug hole is provided, and in other embodiments, multiple side-by-side pitot tube sleeve plug holes can be provided in one pitot tube sleeve storage mechanism 2, and multiple pitot tube sleeve storage mechanisms 2 can also be provided side by side.

[0034] The safety pin storage mechanism 3 includes a second transparent flame retardant plate 31, a third transparent flame retardant plate 32, a second fixing plate 33, a third fixing plate 34, and a slot 35. The second fixing plate 33 is provided with a second jack 331 at a position close to the top opening 11, and the second jack 331 is used for storing a plurality of safety pins with corresponding quantities. The second fixing plate 33 is fixedly connected to the inner wall of the main housing 1 near the top opening 11 and the side wall opening 12 by bolts and nuts; the third fixing plate 34 is provided with a third jack 341 and is fixedly connected to the inner wall of the main housing 1 near the bottom of the main housing 1 by bolts and nuts; the slot 35 is provided with a fourth jack 351, and the slot 35 is fixedly connected to the inner wall of the main housing 1 by bolts and nuts and is located between the second fixing plate 33 and the third fixing plate 34. The second fixing plate 33 includes a first section 332 and a second section 333. The projection of the second jack on the third fixing plate 34 on the first section 332 overlaps with the position of the third jack 341, and the projection of the second jack on the slot 35 on the second section 333 overlaps with the position of the fourth jack 351. The second transparent flame retardant plate 31 and the third transparent flame retardant plate 32 are respectively fixedly connected to both sides of the second fixing plate 33 by bolts and nuts, and are respectively fixedly connected to both sides of the third fixing plate 34 by bolts and nuts. In this embodiment, the third transparent flame retardant plate 32 is snap-fitted at the side wall opening 12.

[0035] In the above-mentioned safety pin storage mechanism 3, the second fixing plate 33 is arranged directly above the third fixing plate 34, and the slot 35 is arranged between the two, so that the long safety pins can be stored through the first section of the second fixing plate 33 and the third fixing plate 34, and at the same time, 1 short safety pin can be stored through the second section of the second fixing plate 33 and the slot 35. In this embodiment, 4 long safety pin jacks and 1 short safety pin jack are provided. In other embodiments, the number of the second jack 331, the third jack 341, and the fourth jack 351 can be increased or decreased by extending or shortening the lengths of the second fixing plate 33, the third fixing plate 34, and the slot 35. The number of safety pin jacks is determined by the actual number of aircraft safety pins to meet different actual needs.

[0036] It should be noted that the projections of the first transparent flame retardant plate 21, the second transparent flame retardant plate 31, and the third transparent flame retardant plate 32 all fall within the area jointly formed by the top opening 11 and the side wall opening 12. At the same time, the side wall of the main housing 1 opposite to the first transparent flame retardant plate 21 is also a transparent flame retardant plate. That is to say, the front and back of the storage box are composed of transparent flame retardant panels so that the relevant staff during handover can observe and check at any time whether the number of pitot tube sleeves and safety pins is qualified.

[0037] In this embodiment, a handle is provided at the top of the main housing 1, and the handle is integrally connected to the main housing 1. In other embodiments, the grasping mechanism can also be of other structures, such as a handle detachably connected to the outer wall of the main housing 1. Since the storage box is light in weight, maintenance personnel can carry the storage box by hand to work. By observing whether the internal slots of the storage box for the safety pin and the pitot tube sheath are full, it is possible to more intuitively and accurately confirm whether the handover quantity is qualified.

[0038] In some other embodiments, the safety pin insertion hole and the pitot tube sheath insertion hole can be designed with different sizes, which are determined by the actual sizes of the safety pin and the pitot tube sheath of the aircraft landing gear.

[0039] The storage box provided in this embodiment is prepared by additive manufacturing, which belongs to the application of additive manufacturing technology in the field of civil aviation. A flame-retardant engineering plastic that meets the corresponding regulations of the Civil Aviation Administration of China is used as the raw material, achieving high strength, lightweight, and low cost as a whole. Since the common production technology solutions are mostly castings, injection moldings made by mold opening; stamping parts made by stamping; and machined parts directly milled by CNC machine tools, these three traditional processes require a long pre-design period and unavoidable high mold opening or processing costs. And when problems are encountered during use and the design needs to be modified, it is necessary to remake the mold or reprogram the CNC machine tool, which results in a waste of a large amount of time and funds. And mold opening casting is not suitable for small-batch production, which will lead to too high a unit price and reduce the cost performance of the product. At the same time, due to the customized needs of airlines for the storage boxes of the safety pins and pitot tube sheaths of different aircraft models, the existing traditional processing methods will not be able to quickly and well respond to such improvement needs at low cost. Therefore, compared with the traditional production and manufacturing methods, the storage box provided in this embodiment prepared by additive manufacturing technology can effectively reduce the production cost and meet the personalized needs of airlines.

[0040] The storage box for the safety pins and pitot tube sheaths of the aircraft landing gear provided in this embodiment can prevent errors caused by human factors, and at the same time better facilitate the installation, removal, and storage of the safety pins of the aircraft landing gear, improving the working environment. This product has received unanimous praise after being used by front-line maintenance personnel and flight crews. It has now been widely used in the airline fleets.

[0041] The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations based on the concept of the present invention without creative labor. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field of the present invention based on the concept of the present invention through logical analysis, reasoning, or limited experiments on the basis of the prior art should be within the protection scope determined by the claims.

Claims

1. An aircraft landing gear safety pin and pitot tube cover storage box, comprising a main housing, characterized in that, It further includes an airspeed tube sheath storage mechanism, a safety pin storage mechanism and a spacer located inside the main housing. The spacer is located between the airspeed tube sheath storage mechanism and the safety pin storage mechanism. The main housing, the airspeed tube sheath storage mechanism and the safety pin mechanism are all semi-closed structures. The main housing is provided with a top opening and a side wall opening. The airspeed tube sheath storage mechanism is provided with a first jack near the top opening, and the safety pin storage mechanism is provided with a second jack near the top opening. The airspeed tube sheath storage mechanism includes a first transparent flame-retardant plate, and the safety pin storage mechanism includes a second transparent flame-retardant plate. The projections of the first transparent flame-retardant plate and the second transparent flame-retardant plate both fall within the area jointly formed by the top opening and the side wall opening.

2. The aircraft landing gear safety pin and pitot tube sheath storage box according to claim 1, characterized in that, The airspeed tube sheath storage mechanism further includes a first fixing plate. The first jack is opened on the first fixing plate, and the first fixing plate is fixedly connected to the inner wall of the main housing near the top opening. The first transparent flame-retardant plate is fixedly connected to the side wall of the first fixing plate and is in close contact with the inner wall of the main housing.

3. The aircraft landing gear safety pin and pitot tube sheath storage box according to claim 1, characterized in that The safety pin storage mechanism further includes a second fixing plate, a third fixing plate, a third transparent flame-retardant plate and a slot. The second fixing plate is provided with the second jack and is fixedly connected to the inner wall of the main housing near the top opening and the side wall opening. The third fixing plate is provided with a third jack and is fixedly connected to the inner wall of the main housing near the bottom of the main housing. The slot is provided with a fourth jack, and the slot is fixedly connected to the inner wall of the main housing and is located between the second fixing plate and the third fixing plate. The second fixing plate includes a first section and a second section. The projection of the second jack on the third fixing plate in the first section overlaps with the position of the third jack, and the projection of the second jack on the slot in the second section overlaps with the position of the fourth jack. The second transparent flame-retardant plate and the third transparent flame-retardant plate are respectively fixedly connected to both sides of the second fixing plate and are respectively fixedly connected to both sides of the third fixing plate at the same time.

4. The aircraft landing gear safety pin and pitot tube sheath storage box according to claim 3, characterized in that One of the second transparent flame-retardant plate and the third transparent flame-retardant plate is clamped at the side wall opening.

5. The landing gear safety pin and airspeed tube sheath storage box according to any one of claims 2-3, characterized in that The fixed connection includes bolt-nut connection.

6. The aircraft landing gear safety pin and pitot tube sheath storage box according to claim 1, characterized in that The main housing includes a gripping mechanism, and the gripping mechanism is integrally connected or detachably connected to the main housing.

7. The aircraft landing gear safety pin and pitot tube sheath storage box according to claim 1, characterized in that The storage box is prepared by additive manufacturing.

8. The aircraft landing gear safety pin and pitot tube sheath storage box according to claim 7, characterized in that, The raw material for the additive manufacturing is flame-retardant engineering plastic.

9. The aircraft landing gear safety pin and pitot tube sheath storage box according to claim 1, characterized in that The sizes of the first jack and the second jack are respectively determined by the sizes of the airspeed tube sheath and the safety pin of the actual aircraft landing gear.

10. The aircraft landing gear safety pin and pitot tube sheath storage box according to claim 1, characterized in that, The second jacks are multiple, and the quantity is determined by the quantity of the safety pins of the actual aircraft landing gear.

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