CN214057885U - Semi-blocking type cargo door rocker arm manufactured by additive manufacturing technology - Google Patents
Semi-blocking type cargo door rocker arm manufactured by additive manufacturing technology Download PDFInfo
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- CN214057885U CN214057885U CN202023050864.4U CN202023050864U CN214057885U CN 214057885 U CN214057885 U CN 214057885U CN 202023050864 U CN202023050864 U CN 202023050864U CN 214057885 U CN214057885 U CN 214057885U
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Abstract
The utility model belongs to the technical field of large-scale civil airliner half-plugging formula cargo compartment door, a half-plugging formula cargo compartment door rocking arm with additive manufacturing technique preparation is provided, mainly comprises top flange, lower flange, left web, right web, lightening hole, strengthening rib, truss, auricle and connecting hole. The utility model discloses a half jam formula cargo door rocking arm is satisfying under the prerequisite of intensity, rigidity requirement, compares with the conventional machine of the same/similar material adds the rocking arm, subtracts to weigh after topological optimization and reaches more than 50%, satisfies the cargo door and opens, closes the requirement, satisfies to bear the hatch door and open requirements such as process hatch door gravity load, wind-load, and the simultaneous manufacturing efficiency is showing and is improving.
Description
Technical Field
The utility model belongs to the technical field of the aviation, especially, relate to a semi-blocking formula cargo compartment door rocker arm structure with additive manufacturing technology preparation.
Background
The cargo door is the passage for cargo into and out of the cargo compartment, and the cargo door of a passenger aircraft serves as the passage for the consignment of luggage or container cargo into and out of the compartment. Passenger aircraft cargo doors are primarily of the plugged, semi-plugged and non-plugged type.
Cargo hold doors do not occupy cargo space and are typically semi-plugged or non-plugged, with semi-plugged doors having better security and being widely used. The semi-blocking cargo door consists of a door structure, a mechanism, a door trim and the like. The opening mechanism is one of the main operation mechanisms of the cargo door, and the opening mechanism usually uses two rocker arms as main bearing structures to control the opening of the cargo door and bear the gravity load, the wind load and the like of the cargo door in the opening process.
At present, the technical scheme of the rocker arm of the cargo hold door is mostly machined. As the rocker arm is used as a main bearing part of the cargo door opening mechanism, the structural size of the rocker arm is large, blank materials usually at least need thick aluminum alloy plates with the specification of delta 2.500in (63.5mm) multiplied by 130mm multiplied by 530mm, the blank materials are often not easy to purchase, machining difficulty is large, machining time is long, material waste is serious, and the structural weight is usually heavy due to double limitations of the requirements on the minimum machining thickness and the structural rigidity. Particularly in the development stage of the airplane, the design scheme is changed quickly, and the development cost of the airplane is increased by manufacturing the rocker arm test piece every time.
The method is particularly important for finding a processing mode which has the advantages of quick manufacture, lower processing cost, effective reduction of the weight of the structure on the premise of ensuring the structural strength and the rigidity and guarantee of the mechanical performance for an airplane project.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a cargo compartment door rocking arm with additive manufacturing technique preparation. The rocker arm produced by the manufacturing technology reduces the structural weight, does not need to use blank materials with large size specifications, is favorable for improving the structural efficiency, reducing the material waste, reducing the processing cost, and effectively reducing the structural weight on the premise of ensuring the structural strength and the rigidity.
The technical scheme of the utility model:
a semi-blocking cargo door rocker arm manufactured by an additive manufacturing technology mainly comprises an upper edge strip, a lower edge strip, a left web plate, a right web plate, lightening holes, reinforcing ribs, a truss, lug plates and connecting holes;
the upper edge strip, the lower edge strip, the left web plate and the right web plate jointly enclose a main body part of the semi-blocking cargo door rocker arm, the main body part is positioned between the third lug plate 3 and the connecting hole 4, and the cross section of a space is rectangular; the section area gradually increases from the third lug piece 3 to the connecting hole 4 to the plane where the first lug piece 1 and the second lug piece 2 are located; the first lug plate 1 and the second lug plate 2 are respectively integrated with a second left web plate 9 and a second right web plate 10 and are positioned at the upper parts of the second left web plate 9 and the second right web plate 10; reinforcing ribs, namely a third reinforcing rib 23 and a fourth reinforcing rib 24 are arranged around the first lug 1 and the second lug 2 respectively;
the upper edge strip mainly comprises a first upper edge strip 5, a second edge strip 13 and a reinforcing edge strip 11; one end of the first upper edge strip 5 is connected with the third lug piece 3, and the other end is connected with the first lug piece 1 and the second lug piece 2; one end of the second edge strip 13 is connected with the connecting hole 4, and the other end is connected with the rear end edge of the reinforcing edge strip 11; the left side and the right side of the reinforcing edge strip 11 are respectively connected with the lower edges of the left reinforcing rib 23 and the right reinforcing rib 24;
the lower edge strip mainly comprises a first lower edge strip 6, a second lower edge strip 12 and a third lower edge strip 14 which are sequentially connected between the third lug piece 3 and the connecting hole 4;
the left web plate mainly comprises a first left web plate 7 and a second left web plate 9 which are sequentially connected between the third lug plate 3 and the connecting hole 4;
the right web plate mainly comprises a first right web plate 8 and a second right web plate 10 which are sequentially connected between the third lug plate 3 and the connecting hole 4;
lightening holes are respectively formed in the first lower edge strip 6, the second lower edge strip 12 and the connecting hole 4 and respectively are a first lightening hole 19, a third lightening hole 21 and a second lightening hole 20;
the trusses are arranged on the first left web 7 and the first right web 8, are respectively positioned below the first lug 1 and the second lug 2 in an inclined manner, and are respectively a left truss 17 and a right truss 18;
the second reinforcing rib 22 is fixed between the first lower edge strip 6 and the second lower edge strip 12, and two ends of the second reinforcing rib are respectively connected with the trusses on two sides; lightening holes are formed in the first lower edge strip 6 and the second lower edge strip 12 and are positioned between the reinforcing ribs;
the middle web plate 15 is arranged in the main body part of the semi-blocking cargo door rocker arm and is respectively connected with the second edge strip 13, the third lower edge strip 14 and the connecting hole 4;
the first reinforcing rib 16 and the fifth reinforcing rib 27 are arranged inside the main body part of the semi-blocking cargo door rocker arm and are respectively connected with the second edge strip 13, the third lower edge strip 14, the middle web 15 and the second left web 9;
a space surrounded by the middle web 15, the first reinforcing ribs 16 and the fifth reinforcing ribs 27 is filled with a second micro-truss 26;
the space behind the third tab 3 is filled with a first micro-truss 25.
The utility model has the advantages that:
the utility model provides a cargo compartment door rocking arm belongs to the application of vibration material disk technique in civil aviation field, carries out topology optimization design according to cargo compartment door opening mechanism load operating mode, and cargo compartment door rocking arm after optimizing satisfies that cargo compartment door opens, closes the functional requirement to satisfy intensity, rigidity requirement under each load operating mode. Simultaneously the utility model discloses the hatch door rocking arm of the supply of providing wholly has intensity height, lightweight, efficient, advantage such as with low costs.
The utility model provides a goods hatch door rocking arm chooses for use aluminum alloy metal powder material to adopt the laser selection district among the vibration material disk technique to melt the technology preparation, the rocking arm part of making through the vibration material disk technique can realize the trial-production work of small batch's test piece, has avoided leading to the waste of frock, anchor clamps etc. because of the scheme change, and has practiced thrift the time for the development of aircraft. Compared with the traditional forging or machining process, on the premise of not reducing the structural strength and the rigidity, the material increase manufacturing technology saves more than 70% of raw materials and more than 50% of time, and improves the production efficiency of small-batch test pieces.
Drawings
Fig. 1 is a schematic view of a rocker arm structure of a cargo door according to an embodiment of the present invention;
fig. 2 is a schematic view of an internal structure of a rocker arm of a cargo door according to an embodiment of the present invention;
fig. 3 is a schematic view of a connection structure of a rocker arm connecting hole of a cargo door according to an embodiment of the present invention;
fig. 4 is a schematic view of a cargo door rocker micro-truss cell according to an embodiment of the present invention.
In the figure: 1 a first tab; 2 a second tab; 3 a third tab; 4, connecting holes; 5 a first upper edge strip; 6 a first lower edge strip; 7 a first left web; 8 a first right web; 9 a second left web; 10 a second right web; 11 a reinforcing bead; 12 a second lower bead; 13 a second bead; 14 a third lower bead; 15 an intermediate web; 16 a first reinforcing rib; 17 a left truss; 18 right truss; 19 a first lightening hole; 20 a second relief hole; 21 a third relief hole; 22 a second reinforcing rib; 23 a third reinforcing rib; 24 a fourth reinforcing bead; 25 a first microtruss; 26 a second microtruss; 27 fifth strengthening the tendons.
Detailed Description
In order to make the purpose, technical solution and advantages of the present invention clearer, the following will combine the drawings in the embodiments of the present invention to perform more detailed description on the technical solution in the embodiments of the present invention.
It should be noted that: in the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1, a semi-plugged cargo door rocker arm manufactured by an additive manufacturing technology mainly comprises an upper edge strip, a lower edge strip, a left web plate, a right web plate, lightening holes, reinforcing ribs, a truss, lug plates and connecting holes;
the upper edge strip, the lower edge strip, the left web plate and the right web plate jointly enclose a main body part of the semi-blocking cargo door rocker arm, the main body part is positioned between the third lug plate 3 and the connecting hole 4, and the cross section of a space is rectangular; the section area gradually increases from the third lug piece 3 to the connecting hole 4 to the plane where the first lug piece 1 and the second lug piece 2 are located; the first lug plate 1 and the second lug plate 2 are respectively integrated with a second left web plate 9 and a second right web plate 10 and are positioned at the upper parts of the second left web plate 9 and the second right web plate 10; reinforcing ribs, namely a third reinforcing rib 23 and a fourth reinforcing rib 24 are arranged around the first lug 1 and the second lug 2 respectively;
the upper edge strip mainly comprises a first upper edge strip 5, a second edge strip 13 and a reinforcing edge strip 11; one end of the first upper edge strip 5 is connected with the third lug piece 3, and the other end is connected with the first lug piece 1 and the second lug piece 2; one end of the second edge strip 13 is connected with the connecting hole 4, and the other end is connected with the rear end edge of the reinforcing edge strip 11; the left side and the right side of the reinforcing edge strip 11 are respectively connected with the lower edges of the left reinforcing rib 23 and the right reinforcing rib 24;
the lower edge strip mainly comprises a first lower edge strip 6, a second lower edge strip 12 and a third lower edge strip 14 which are sequentially connected between the third lug piece 3 and the connecting hole 4;
the left web plate mainly comprises a first left web plate 7 and a second left web plate 9 which are sequentially connected between the third lug plate 3 and the connecting hole 4;
the right web plate mainly comprises a first right web plate 8 and a second right web plate 10 which are sequentially connected between the third lug plate 3 and the connecting hole 4;
lightening holes are respectively formed in the first lower edge strip 6, the second lower edge strip 12 and the connecting hole 4 and respectively are a first lightening hole 19, a third lightening hole 21 and a second lightening hole 20;
the trusses are arranged on the first left web 7 and the first right web 8, are respectively positioned below the first lug 1 and the second lug 2 in an inclined manner, and are respectively a left truss 17 and a right truss 18;
the second reinforcing rib 22 is fixed between the first lower edge strip 6 and the second lower edge strip 12, and two ends of the second reinforcing rib are respectively connected with the trusses on two sides; lightening holes are formed in the first lower edge strip 6 and the second lower edge strip 12 and are positioned between the reinforcing ribs;
the middle web plate 15 is arranged in the main body part of the semi-blocking cargo door rocker arm and is respectively connected with the second edge strip 13, the third lower edge strip 14 and the connecting hole 4;
the first reinforcing rib 16 and the fifth reinforcing rib 27 are arranged inside the main body part of the semi-blocking cargo door rocker arm and are respectively connected with the second edge strip 13, the third lower edge strip 14, the middle web 15 and the second left web 9;
a space surrounded by the middle web 15, the first reinforcing ribs 16 and the fifth reinforcing ribs 27 is filled with a second micro-truss 26;
the space behind the third tab 3 is filled with a first micro-truss 25.
The cargo door rocker arm manufactured by the additive manufacturing technology is subjected to structural optimization design through simulation calculation of a model, so that the structural weight is reduced, and the structural bearing capacity is improved.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (1)
1. A semi-blocking cargo door rocker arm manufactured by an additive manufacturing technology is characterized in that the semi-blocking cargo door rocker arm mainly comprises an upper edge strip, a lower edge strip, a left web plate, a right web plate, lightening holes, reinforcing ribs, trusses, lugs and connecting holes;
the upper edge strip, the lower edge strip, the left web plate and the right web plate jointly enclose a main body part of the semi-blocking cargo door rocker arm, the main body part is positioned between the third lug plate (3) and the connecting hole (4), and the cross section of the space is rectangular; the cross section area gradually increases from the third lug piece (3) to the connecting hole (4) to the plane where the first lug piece (1) and the second lug piece (2) are located; the first lug (1) and the second lug (2) are integrated with the second left web (9) and the second right web (10) respectively and are positioned at the upper parts of the second left web (9) and the second right web (10); reinforcing ribs are arranged around the first lug plate (1) and the second lug plate (2), and are respectively a third reinforcing rib (23) and a fourth reinforcing rib (24);
the upper edge strip mainly comprises a first upper edge strip (5), a second edge strip (13) and a reinforcing edge strip (11); one end of the first upper edge strip (5) is connected with the third lug (3), and the other end of the first upper edge strip is connected with the first lug (1) and the second lug (2); one end of the second edge strip (13) is connected with the connecting hole (4), and the other end of the second edge strip is connected with the rear end edge of the reinforcing edge strip (11); the left side and the right side of the second edge strip (13) are respectively connected with the lower edges of the third reinforcing rib (23) and the fourth reinforcing rib (24);
the lower edge strip mainly comprises a first lower edge strip (6), a second lower edge strip (12) and a third lower edge strip (14), and the first lower edge strip, the second lower edge strip and the third lower edge strip are sequentially connected between the third lug piece (3) and the connecting hole (4);
the left web plate mainly comprises a first left web plate (7) and a second left web plate (9), and the first left web plate and the second left web plate are sequentially connected between the third lug plate (3) and the connecting hole (4);
the right web plate mainly comprises a first right web plate (8) and a second right web plate (10), and the first right web plate and the second right web plate are sequentially connected between the third lug plate (3) and the connecting hole (4);
the lightening holes are respectively formed in the first lower edge strip (6), the second lower edge strip (12) and the connecting hole (4) and are respectively a first lightening hole (19), a third lightening hole (21) and a second lightening hole (20);
the trusses are arranged on the first left web plate (7) and the first right web plate (8), are respectively positioned below the first lug plate (1) and the second lug plate (2) in an inclined manner, and are respectively a left truss (17) and a right truss (18);
the second reinforcing rib (22) is fixed between the first lower edge strip (6) and the second lower edge strip (12), and two ends of the second reinforcing rib are respectively connected with the trusses on two sides; lightening holes are formed in the first lower edge strip (6) and the second lower edge strip (12) and are positioned between the reinforcing ribs;
the middle web plate (15) is arranged in the main body part of the semi-blocking cargo door rocker arm and is respectively connected with the second edge strip (13), the third lower edge strip (14) and the connecting hole (4);
the first reinforcing rib (16) and the fifth reinforcing rib (27) are arranged inside the main body part of the semi-blocking cargo door rocker arm and are respectively connected with the second edge strip (13), the third lower edge strip (14), the middle web plate (15) and the second left web plate (9);
a space surrounded by the middle web plate (15), the first reinforcing ribs (16) and the fifth reinforcing ribs (27) is filled with a second micro-truss (26);
and a space at the rear part of the third lug (3) is filled with a first micro-truss (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023050864.4U CN214057885U (en) | 2020-12-17 | 2020-12-17 | Semi-blocking type cargo door rocker arm manufactured by additive manufacturing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023050864.4U CN214057885U (en) | 2020-12-17 | 2020-12-17 | Semi-blocking type cargo door rocker arm manufactured by additive manufacturing technology |
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| Publication Number | Publication Date |
|---|---|
| CN214057885U true CN214057885U (en) | 2021-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023050864.4U Active CN214057885U (en) | 2020-12-17 | 2020-12-17 | Semi-blocking type cargo door rocker arm manufactured by additive manufacturing technology |
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| Country | Link |
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| CN (1) | CN214057885U (en) |
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- 2020-12-17 CN CN202023050864.4U patent/CN214057885U/en active Active
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