Counterweight device and counterweight method for aircraft panel

Abstract

The invention provides a counterweight device and a counterweight method for an aircraft panel, and belongs to the technical field of aviation. The counterweight device for the aircraft panel comprises a front end frame, a panel, a counterweight platform, a rear end frame, a counterweight box, a box cover, at least one counterweight block and a limiting piece; wherein the counterweight platform is fixedly connected with the front end frame, the wall plate and the rear end frame; the counterweight box is fixedly connected with the counterweight platform; all the balancing weights are located in the weight box, and each balancing weight can be limited through a limiting piece. And the weight box is fixedly connected with the box cover. The device has the advantages of being good in structural stability, convenient to adjust the balance weight, convenient to disassemble and assemble in the later period, high in expansibility and the like, and the problems that an existing balance weight is inconvenient to adjust and large in local stress can be solved.

Description

Technical Field

[0001] The invention belongs to the field of aviation technology, and in particular relates to a counterweight device and a counterweight method for aircraft wall panels. Background Art

[0002] Before an aircraft is manufactured and shipped, it needs to undergo a large number of verification test flights. Generally, after the aircraft is fully fueled, specific counterweights are added at specific locations according to the weight center of gravity of the entire aircraft to ensure the center of gravity of the aircraft. Generally, the weight of the counterweights needs to be frequently changed according to the different missions of the aircraft. Sandbags are usually used to adjust the weight center of gravity. The handling and fixing of sandbags makes the pre-flight preparation time of the aircraft longer, which brings inconvenience to the preliminary preparations. Therefore, it is necessary to propose a counterweight device that can adjust the pre-flight weight center according to different flight missions.

[0003] In the prior art, the counterweight device is in the form of a combination of supports, bolts and nuts. A plurality of counterweights are strung together using specific long bolts, supported by supports at both ends, and positioned and tightened by nuts. This structure is generally used in open spaces, and there are problems such as large local stress in the supports and inconvenient counterweight adjustment. Summary of the invention

[0004] In order to solve the technical problems in the prior art that the aircraft counterweight is difficult to adjust and the local structure is easily deformed due to heavy load, the present invention provides a weight-adjustable counterweight device and a counterweight method for aircraft wall panels. The present invention adopts a counterweight platform, a counterweight box and a counterweight block combination, and uses the counterweight platform to transfer the counterweight load to the wall panels and frames to reduce the heavy local load. At the same time, a limiter is used to achieve the clamping of the counterweight block, so as to meet the needs of convenient adjustment of the counterweight when the aircraft performs different flight missions. The present invention has the characteristics of good structural stability, convenient counterweight adjustment, convenient later disassembly and assembly, and strong expandability. It can solve the problems of inconvenient counterweight adjustment and heavy local force. The technical scheme is as follows:

[0005] In a first aspect, a counterweight device for an aircraft wall panel is provided, comprising: a front end frame, a wall panel, a counterweight platform, a rear end frame, a counterweight box, a box cover, at least one counterweight block, and a stopper;

[0006] Among them, the counterweight platform is fixedly connected to the front frame, wall panel, and rear frame; the counterweight box is fixedly connected to the counterweight platform; all counterweight blocks are located in the counterweight box, and each counterweight block can be limited by a limiting piece; the counterweight box and the box cover are fixedly connected.

[0007] Optionally, the counterweight platform is composed of n corner boxes, a left upper longitudinal beam, a left web, a rear left column, a rear frame edge, a rear upper cross beam, a rear right column, a right upper longitudinal beam, a right web, a right lower longitudinal beam, n profiles, m middle cross beams, a front right column, a front upper cross beam, a front left column, a front frame edge, and a left lower longitudinal beam, where n is an even number greater than or equal to 2, and m is equal to n / 2;

[0008] The left lower longitudinal beam and the right lower longitudinal beam are T-shaped materials with sunken ends at both ends, which are fixedly connected to the front frame edge and the rear frame edge respectively; the T-shaped vertical rib edges of the left lower longitudinal beam and the right lower longitudinal beam are fixedly connected to the left web plate and the right web plate respectively;

[0009] The left upper longitudinal beam and the right upper longitudinal beam are both T-shaped materials, with gaps left at both ends. The left upper longitudinal beam is fixedly connected to the front left column and the rear left column respectively; the right upper longitudinal beam is fixedly connected to the rear right column and the front right column respectively;

[0010] The n profiles and the m middle cross beams are all T-profiles with depressions, the bottom surface of the profile is fixedly connected to the right web, the right lower longitudinal beam, the right upper longitudinal beam, and the corner box, and the vertical reinforcement surface of the profile is fixedly connected to the middle cross beam;

[0011] The front upper cross beam and the rear upper cross beam are both T-shaped profiles with depressions. The bottom surface of the front upper cross beam is fixedly connected to the front end frame, and the two ends of the vertical rib surface of the front upper cross beam are respectively fixedly connected to the left upper longitudinal beam and the right upper longitudinal beam; the bottom surface of the rear upper cross beam is fixedly connected to the rear end frame, and the two ends of the vertical rib surface of the rear upper cross beam are respectively fixedly connected to the left upper longitudinal beam and the right upper longitudinal beam;

[0012] The rear left upright column is a T-shaped material with a sunken structure, and is respectively fixedly connected to the rear end frame, the left upper longitudinal beam, the left web, the rear frame edge, the rear upper cross beam, and the left lower longitudinal beam.

[0013] Optionally, the counterweight box is composed of a front plate, a plurality of joints, a right plate, a bottom plate, a rear plate, a plurality of left and right triangular plates, a left plate, and a plurality of front and rear triangular plates, and the counterweight box is an integral welded steel plate;

[0014] The bottom plate is a steel plate with bolt holes, and the counterweight platform and the counterweight box are fixedly connected through the bolt holes inside and outside the box body;

[0015] The right plate and the left plate are provided with corresponding openings, and the spacing between the openings is consistent with the spacing between the openings on both sides of the limiting member;

[0016] The joint is an L-shaped structure, with bolt holes connected to the box cover on the horizontal surface and fixedly connected to the right plate or the left plate on the vertical surface;

[0017] Optionally, the counterweight block is a lead-antimony alloy, and the overall structure is a suitcase-like structure, which conforms to the functional characteristics of the human body and is convenient for personnel to manually extract.

[0018] Optionally, the limit member is a machine-added corner box with multiple openings at both ends. By adjusting the limit member and connecting it with different bolt holes on the right plate and the left plate, the counterweight block can be fixed and the position adjusted, which facilitates the requirement of adjustable counterweight (including quantity and position) when the aircraft performs different flight missions.

[0019] Optionally, the number and positions of the counterweights are determined according to the flight attitude data of the aircraft and the requirements for executing a flight mission.

[0020] Optionally, the counterweight box is fixedly connected to the counterweight platform by bolts; the counterweight box and the box cover are fixedly connected by bolts.

[0021] In a second aspect, a weight-adjustable counterweight method for an aircraft wall panel is provided, the method being used for any weight-adjustable counterweight device for an aircraft wall panel described in the first aspect, the method comprising:

[0022] Determine the quantity and position of the ballast blocks according to the different flight attitude data of the aircraft and the requirements for performing different flight missions;

[0023] The counterweight block that meets the counterweight weight requirement is fixed at the corresponding position of the counterweight box through the limiting piece;

[0024] Securely connect the box cover to the weight box.

[0025] The beneficial effects of the present invention are at least:

[0026] The present invention proposes a counterweight device for aircraft wall panels, which effectively solves the problem that the aircraft counterweight is difficult to adjust and the local structure is easily deformed due to heavy load. The device of the present invention adopts a combination of a counterweight platform, a counterweight box and a counterweight block, and uses the counterweight platform to transfer the counterweight load to the wall panels and frames to reduce the heavy local load. At the same time, the position of the counterweight block in the counterweight box is adjusted by a limiter to meet the demand for adjustable counterweight when the aircraft performs different flight missions.

[0027] The invention has the characteristics of good structural stability, convenient counterweight adjustment, convenient later disassembly and assembly, strong expandability, etc., and can solve the problems of inconvenient counterweight adjustment and large local force in the existing ones. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of a counterweight device;

[0029] Figure 2 is a schematic diagram of a counterweight platform;

[0030] Figure 3 It is a detailed view of the local part I of the counterweight platform;

[0031] Figure 4 is a schematic diagram of a counterweight box;

[0032] Figure 5 is a schematic diagram of a counterweight;

[0033] Figure 6 is a schematic diagram of a limiting member;

[0034] Figure 7 This is a schematic diagram of the counterweight block limit assembly;

[0035] Among them: 1. front frame, 2. wall plate 2, 3. counterweight platform, 3-1. corner box, 3-2. left upper longitudinal beam, 3-3. left web plate, 3-4. rear left column, 3-5. rear frame edge, 3-6. rear upper cross beam, 3-7. rear right column, 3-8. right upper longitudinal beam, 3-9. right web plate, 3-10. right lower longitudinal beam, 3-11. profile, 3-12. middle cross beam, 3 -13. Front right pillar, 3-14. Front upper cross beam, 3-15. Front left pillar, 3-16. Front frame edge, 3-17. Left lower longitudinal beam, 4. Rear end frame, 5. Counterweight box, 5-1. Front plate, 5-2. Joint, 5-3. Right plate, 5-4. Bottom plate, 5-5. Rear plate, 5-6. Triangle plate, 5-7. Left plate, 6. Box cover, 7. Counterweight block, 8. Limiting piece. DETAILED DESCRIPTION

[0036] The present invention is further described in detail below through specific implementation modes and drawings.

[0037] One embodiment of the present invention provides a weight-adjustable counterweight device for aircraft wall panels, see Figure 1 , Figure 5 , Figure 6 ,and Figure 7 , mainly includes a front end frame 1, a wall plate 2, a counterweight platform 3, a rear end frame 4, a counterweight box 5, a box cover 6, a counterweight block 7, and a limiter 8;

[0038] Among them, the counterweight platform 3 is fixedly connected to the front end frame 1, the wall panel 2, and the rear end frame 4; the counterweight box 5 is fixedly connected to the counterweight platform 3 by bolts; the counterweight block 7 is located in the counterweight box 5, and the counterweight block 7 can be limited by the limit piece 8; the counterweight box 5 and the box cover 6 are fixedly connected by bolts.

[0039] See also Figure 2 and Figure 3 The counterweight platform 3 is composed of 4 corner boxes 3-1, a left upper longitudinal beam 3-2, a left web 3-3, a rear left column 3-4, a rear frame edge 3-5, a rear upper cross beam 3-6, a rear right column 3-7, a right upper longitudinal beam 3-8, a right web 3-9, a right lower longitudinal beam 3-10, 4 profiles 3-11, 2 middle cross beams 3-12, a front right column 3-13, a front upper cross beam 3-14, a front left column 3-15, a front frame edge 3-16, and a left lower longitudinal beam 3-17;

[0040] The left lower longitudinal beam 3-17 and the right lower longitudinal beam 3-10 are T-shaped materials with sunken ends at both ends, which are fixedly connected to the front frame edge 3-16 and the rear frame edge 3-5 respectively; the T-shaped vertical rib edges of the left lower longitudinal beam 3-17 and the right lower longitudinal beam 3-10 are fixedly connected to the left web 3-3 and the right web 3-9 respectively;

[0041] The left upper longitudinal beam 3-2 and the right upper longitudinal beam 3-8 are both T-shaped materials, with gaps left at both ends. The left upper longitudinal beam 3-2 is fixedly connected to the front left column 3-15 and the rear left column 3-4 respectively; the right upper longitudinal beam 3-8 is fixedly connected to the rear right column 3-7 and the front right column 3-13 respectively;

[0042] The four profiles 3-11 and the two middle cross beams 3-12 are all T-profiles with depressions. The bottom surface of the profile 3-11 is fixedly connected to the right web 3-9, the right lower longitudinal beam 3-10, the right upper longitudinal beam 3-8, and the corner box 3-1. The vertical reinforcement surface of the profile 3-11 is fixedly connected to the middle cross beam 3-12.

[0043] The front upper cross beam 3-14 and the rear upper cross beam 3-6 are both T-shaped materials with a depression. The bottom surface of the front upper cross beam 3-14 is fixedly connected to the front end frame 1, and the two ends of the vertical rib surface of the front upper cross beam 3-14 are respectively fixedly connected to the left upper longitudinal beam 3-2 and the right upper longitudinal beam 3-8; the bottom surface of the rear upper cross beam 3-6 is fixedly connected to the rear end frame 4, and the two ends of the vertical rib surface of the rear upper cross beam 3-6 are respectively fixedly connected to the left upper longitudinal beam 3-2 and the right upper longitudinal beam 3-8;

[0044] The rear left upright column 3-4 is a T-shaped material with a sunken structure, and is fixedly connected to the rear end frame 4, the left upper longitudinal beam 3-2, the left web 3-3, the rear frame edge 3-5, the rear upper cross beam 3-6, and the left lower longitudinal beam 3-17 respectively;

[0045] See also Figure 4 The counterweight box 5 is mainly composed of a front plate 5-1, 6 joints 5-2, a right plate 5-3, a bottom plate 5-4, a rear plate 5-5, 4 left and right triangular plates 5-6, a left plate 5-7 and 2 front and rear triangular plates 5-8. The counterweight box is an integral welded steel plate;

[0046] The bottom plate 5-4 is a steel plate with bolt holes, and the counterweight platform 3 and the counterweight box 5 are fixedly connected through the bolt holes inside and outside the box body;

[0047] The right plate 5-3 and the left plate 5-7 are provided with corresponding openings, and the spacing between the openings is consistent with the openings on both sides of the limiter 8;

[0048] The joint 5-2 is an L-shaped structure, and has bolt holes on the horizontal surface for connection with the box cover 6;

[0049] The counterweight 7 is a lead-antimony alloy and has a dumbbell-shaped structure as a whole;

[0050] See also Figure 6 The limiting member 8 is a machine-added corner box, and each of the two end heads is provided with 4 openings. By adjusting the limiting member 8 and connecting it with different bolt holes of the right plate 5-3 and the left plate 5-7, the front and rear limiting of the counterweight block 7 can be achieved.

[0051] In an embodiment of the present invention, the counterweight block can be fixed at a corresponding position according to configuration requirements through a limiting member. For example, when a configuration block is required by calculation, if the counterweight position is required to be relatively forward, the counterweight block can be fixed to the front half of the counterweight box through a limiting member; if the counterweight position is required to be relatively backward, the counterweight block can be fixed to the back half of the counterweight box through a limiting member.

[0052] An embodiment of the present invention further provides a weight-adjustable counterweight method for aircraft wall panels, the method being used in a weight-adjustable counterweight device for aircraft wall panels provided in an embodiment of the present invention, see Figure 1 and Figure 7 , the method comprising:

[0053] Step 1: Determine the number and position of the counterweights 7 according to the different flight attitude data of the aircraft and the requirements for performing different flight missions;

[0054] Step 2: fix the counterweight block 7 that meets the counterweight weight requirement at the corresponding position of the counterweight box 5 through the limiting member 8;

[0055] Step 3: Fixedly connect the box cover 6 to the counterweight box 5.

[0056] For example, in one embodiment, when the aircraft is performing flight mission A, the flight attitude data calculation requires the counterweight position to be forward, and it is calculated that one counterweight block 7 is required; this counterweight block 7 is fixed to the front half of the counterweight box 5 by the limit member 8; finally, the box cover 6 is fixedly connected to the counterweight box 5.

[0057] For example, in another embodiment, when the aircraft is performing flight mission B, the flight attitude data calculation requires the counterweight position to be moved back, and it is calculated that three counterweight blocks 7 are needed; these three counterweight blocks 7 are fixed to the rear half of the counterweight box 5 by the limiter 8; finally, the box cover 6 is fixedly connected to the counterweight box 5.

[0058] The above only expresses the implementation mode of the present invention, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. In addition, the parts not detailed in the present invention are all conventional technologies.

Claims

1. A counterweight device for an aircraft panel, characterized in that: include: A front frame, a wall plate, a counterweight platform, a rear frame, a counterweight box, a box cover, at least one counterweight block, and a stopper; Among them, the counterweight platform is fixedly connected to the front frame, wall panel, and rear frame; the counterweight box is fixedly connected to the counterweight platform; all counterweight blocks are located in the counterweight box, and each counterweight block can be limited by a limiting piece; the counterweight box and the box cover are fixedly connected.

2. The device according to claim 1, characterized in that The counterweight platform is composed of n corner boxes, a left upper longitudinal beam, a left web, a rear left column, a rear frame edge, a rear upper cross beam, a rear right column, a right upper longitudinal beam, a right web, a right lower longitudinal beam, n profiles, m middle cross beams, a front right column, a front upper cross beam, a front left column, a front frame edge, and a left lower longitudinal beam, where n is an even number greater than or equal to 2, and m is equal to n / 2; The left lower longitudinal beam and the right lower longitudinal beam are T-shaped materials with sunken ends at both ends, which are fixedly connected to the front frame edge and the rear frame edge respectively; the T-shaped vertical rib edges of the left lower longitudinal beam and the right lower longitudinal beam are fixedly connected to the left web plate and the right web plate respectively; The left upper longitudinal beam and the right upper longitudinal beam are both T-shaped materials, with gaps left at both ends. The left upper longitudinal beam is fixedly connected to the front left column and the rear left column respectively; the right upper longitudinal beam is fixedly connected to the rear right column and the front right column respectively; The n profiles and the m middle cross beams are all T-profiles with depressions, the bottom surface of the profile is fixedly connected to the right web, the right lower longitudinal beam, the right upper longitudinal beam, and the corner box, and the vertical reinforcement surface of the profile is fixedly connected to the middle cross beam; The front upper cross beam and the rear upper cross beam are both T-shaped profiles with depressions. The bottom surface of the front upper cross beam is fixedly connected to the front end frame, and the two ends of the vertical rib surface of the front upper cross beam are respectively fixedly connected to the left upper longitudinal beam and the right upper longitudinal beam; the bottom surface of the rear upper cross beam is fixedly connected to the rear end frame, and the two ends of the vertical rib surface of the rear upper cross beam are respectively fixedly connected to the left upper longitudinal beam and the right upper longitudinal beam; The rear left upright column is a T-shaped material with a sunken structure, and is respectively fixedly connected to the rear end frame, the left upper longitudinal beam, the left web, the rear frame edge, the rear upper cross beam, and the left lower longitudinal beam.

3. The device according to claim 1, characterized in that The counterweight box is composed of a front plate, a plurality of joints, a right plate, a bottom plate, a rear plate, a plurality of left and right triangular plates, a left plate, and a plurality of front and rear triangular plates, and the counterweight box is an integral welded steel plate; The bottom plate is a steel plate with bolt holes, and the counterweight platform and the counterweight box are fixedly connected through the bolt holes inside and outside the box body; The right plate and the left plate are provided with corresponding openings, and the spacing between the openings is consistent with the spacing between the openings on both sides of the limiting member; The joint is an L-shaped structure, with bolt holes connected to the box cover on the horizontal surface and fixedly connected to the right plate or the left plate on the vertical surface.

4. The device according to claim 1, characterized in that The counterweight block is made of lead-antimony alloy and has a suitcase-like structure as a whole.

5. The device according to claim 3, characterized in that The limiting member is a machined corner box, with multiple openings at both ends.

6. The device according to claim 1, characterized in that The number and position of the ballast blocks are determined based on the aircraft's flight attitude data and the requirements for performing the flight mission.

7. The device according to claim 1, characterized in that The counterweight box and the counterweight platform are fixedly connected by bolts; the counterweight box and the box cover are fixedly connected by bolts.

8. A weight-adjustable counterweight method for aircraft wall panels, characterized in that: The method is used for the weight-adjustable counterweight device for aircraft wall panels according to any one of claims 1 to 7, and the method comprises: Determine the quantity and position of the ballast blocks according to the different flight attitude data of the aircraft and the requirements for performing different flight missions; The counterweight block that meets the counterweight weight requirement is fixed at the corresponding position of the counterweight box through the limiting piece; Securely connect the box cover to the weight box.

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