Airplane air inlet skin gravity center fixing device
By designing a center of gravity fixing device for the aircraft intake airliner skin that includes a fixing frame, a bracket, a hanging arm, a bracket, a limiting plate and a clamping structure, the problems of inconvenience and low production efficiency caused by the lack of special tooling in the prior art are solved, and the rapid positioning and efficient clamping and fixing of the aircraft intake airliner skin are achieved.
Patent Information
- Application Number
- CN202421689016.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-17
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-07-17
AI Technical Summary
In the prior art, the center of gravity fixing device for the intake duct skin of the aircraft lacks special tooling, which leads to inconvenience in use and affects production efficiency.
A fixed device for the center of gravity of the air intake duct of an aircraft is designed, including a fixing frame, a bracket, a hanging arm, a bracket, a limiting plate and a clamping structure, through which the air intake body is supported, positioned and clamped.
It realizes rapid positioning and efficient clamping and fixing of the aircraft air intake skin, improves production efficiency and is easy to use.
Smart Images
Figure CN222808305U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fixing tooling, in particular to a device for fixing the center of gravity of an aircraft air inlet skin. Background Art
[0002] The outside of an aircraft air inlet is composed of multiple skins with irregular curved surfaces, which are reliably connected to the air inlet frame by rivets. After riveting, the surface of the skin should be flat and smooth. When the aircraft air inlet skin is covered, multiple sets of counterweights are required to adjust its center of gravity. During adjustment, a fixing device is required for clamping and fixing. In the prior art, general tooling is usually used for clamping and fixing, and there is no suitable special tooling. It is not convenient to use and affects production efficiency. Therefore, it is necessary to provide an aircraft air inlet skin center of gravity fixing device to improve production efficiency. Utility Model Content
[0003] The utility model aims to solve the shortcomings in the prior art and proposes a device for fixing the center of gravity of the aircraft air inlet skin.
[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a device for fixing the center of gravity of an aircraft air inlet skin, comprising a fixing frame, an air inlet body and a plurality of counterweight blocks, wherein three groups of brackets are arranged on the upper wall of the fixing frame from left to right, and the upper walls of the three groups of brackets are all provided with a supporting structure for supporting the air inlet body, and the upper wall of the fixing frame is fixedly connected with four groups of hanging arms, and the four groups of hanging arms are all arranged on the upper wall of the fixing frame and are arranged in groups of two, respectively, close to the front wall and the rear wall of the fixing frame, and the inner walls of the four groups of hanging arms at one end away from the fixing frame are all provided with a suspension structure. Structure, a plurality of groups of second pillars are arranged on the upper wall of the fixing frame near the left wall, and the upper ends of the plurality of second pillars are all provided with a left positioning structure for positioning the lower edge of the left end of the air inlet body; a plurality of groups of third pillars are arranged on the upper wall of the fixing frame near the right wall, and the upper ends of the plurality of third pillars are all provided with a right positioning structure for positioning the lower edge of the right end of the air inlet body; the upper wall of the fixing frame near the four corners are fixedly connected with first pillars, and the upper ends of the four groups of the first pillars are all provided with a clamping structure for pressing against the air inlet body to form a fixation.
[0005] As a further description of the above technical solution:
[0006] The supporting structure includes three groups of brackets, which are respectively arranged on one side of the three groups of brackets away from the fixing frame, and the shapes of the inner side walls of the three groups of brackets are consistent with the outer shape of the lower wall part of the air inlet body.
[0007] As a further description of the above technical solution:
[0008] The suspension structure comprises four groups of hanging holes, which are respectively arranged on the inner walls of four groups of hanging arms and are all located at one end away from the fixing frame.
[0009] As a further description of the above technical solution:
[0010] The left positioning structure comprises a plurality of groups of left limiting plates, and the plurality of groups of left limiting plates are respectively fixedly connected to one end of the plurality of groups of second pillars away from the fixing frame.
[0011] As a further description of the above technical solution:
[0012] The right positioning structure includes a plurality of groups of right limiting plates, and the plurality of groups of right limiting plates are respectively fixedly connected to one end of the plurality of groups of third pillars away from the fixing frame.
[0013] As a further description of the above technical solution:
[0014] The clamping structure includes four groups of connecting seats, which are respectively fixedly connected to one end of the four groups of first pillars away from the fixing frame, and the outer walls of the connecting seats are distributed up and down and fixedly connected with two groups of sliding sleeves in sequence, and the inner wall of the sliding sleeve is slidably connected with a sliding rod, and the sliding rod and the sliding sleeve are locked by a first hand-tightening screw, one end of the sliding rod passes through the sliding sleeve and extends toward the outside of the sliding sleeve, and the end of the sliding rod extending to the outer wall of the sliding sleeve is fixedly connected with a connecting head, and the inner wall of the connecting head is threadedly connected with a second hand-tightening screw.
[0015] The utility model has the following beneficial effects:
[0016] Compared with the prior art, the aircraft air inlet skin center of gravity fixing device, the air inlet body falls on the bracket of the bracket to form a support and positioning for the bottom, and the left and right lower edges of the left and right ends of the air inlet body are abutted for left and right positioning by the left limit plate and the right limit plate, and then the extension length of the slide rod and the angle of the connector are adjusted, and the upper edges of the left and right ends of the air inlet body are tightened and fixed by the second hand-tightening screws, which can play a better fixing role, has a fast positioning speed, is very convenient to use, and effectively improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of the overall structure of a device for fixing the center of gravity of an aircraft air inlet skin proposed by the utility model;
[0018] Figure 2 The utility model provides a device for fixing the center of gravity of the aircraft air inlet skin. Figure 1 A partial enlarged view of the middle A;
[0019] Figure 3 The utility model is a schematic diagram of the side structure of a bracket of a device for fixing the center of gravity of an aircraft air inlet skin.
[0020] Legend:
[0021] 1. Fixed frame; 2. First pillar; 3. Bracket; 4. Bracket; 5. Hanging arm; 6. Hanging hole; 7. Second pillar; 8. Left limit plate; 9. Third pillar; 10. Right limit plate; 11. Connecting seat; 12. Sliding sleeve; 13. Sliding rod; 14. First hand screw; 15. Connecting head; 16. Second hand screw; 17. Counterweight. DETAILED DESCRIPTION
[0022] 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 in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] Reference Figures 1 to 3 The utility model provides a device for fixing the center of gravity of an aircraft air inlet skin: comprising a fixing frame 1, an air inlet body and a plurality of counterweight blocks 17.
[0024] like Figure 1 , Figure 3 As shown, in order to support the air inlet body, three groups of brackets 3 are sequentially arranged on the upper wall of the fixing frame 1 from left to right, and the upper walls of the three groups of brackets 3 are all provided with a supporting structure for supporting the air inlet body, and the supporting structure includes three groups of brackets 4, and the three groups of brackets 4 are respectively arranged on the side of the three groups of brackets 3 away from the fixing frame 1, and the shapes of the inner side walls of the three groups of brackets 4 are consistent with the outer shape of the lower wall part of the air inlet body. After the air inlet body falls on the inner side walls of the brackets 4, the lower wall of the air inlet body can be supported by the characteristics that the inner side walls of the brackets 4 are consistent with the outer shape of the lower wall part of the air inlet body, and the front and rear positions can be positioned by the brackets 4;
[0025] like Figure 1 As shown, in order to facilitate the lifting of the fixing frame 1, four groups of hanging arms 5 are fixedly connected to the upper wall of the fixing frame 1. The four groups of hanging arms 5 are all arranged on the upper wall of the fixing frame 1 and are arranged in groups of two, respectively close to the front wall and the rear wall of the fixing frame 1. The inner walls of the ends of the four groups of hanging arms 5 away from the fixing frame 1 are all provided with hanging structures. The hanging structures include four groups of hanging holes 6. The four groups of hanging holes 6 are respectively arranged on the inner walls of the four groups of hanging arms 5 and are all located at the end away from the fixing frame 1. The hanging holes 6 are used to connect the common lifting equipment on the market. After lifting, the rear center of gravity of the skin is detected, and the center of gravity is adjusted by installing the configuration block.
[0026] like Figure 1As shown, in order to position the left end of the air inlet body, a plurality of groups of second pillars 7 are arranged on the upper wall of the fixing frame 1 and near the left wall, and the upper ends of the plurality of groups of second pillars 7 are all provided with left positioning structures for positioning the lower edge of the left end of the air inlet body, and the left positioning structures include a plurality of groups of left limiting plates 8, and the plurality of groups of left limiting plates 8 are respectively fixedly connected to the ends of the plurality of groups of second pillars 7 away from the fixing frame 1, and the plurality of groups of left limiting plates 8 are in contact with the lower edge of the left end of the air inlet body to play a limiting role;
[0027] like Figure 1 As shown, in order to position the right end of the air inlet body, multiple groups of third pillars 9 are arranged on the upper wall of the fixing frame 1 and near the right wall. The upper ends of the multiple groups of third pillars 9 are all provided with right positioning structures for positioning the lower edge of the right end of the air inlet body. The right positioning structure includes multiple groups of right limiting plates 10. The multiple groups of right limiting plates 10 are respectively fixedly connected to the ends of the multiple groups of third pillars 9 away from the fixing frame 1. The multiple groups of right limiting plates 10 are in contact with the lower edge of the right end of the air inlet body, and cooperate with the multiple groups of left limiting plates 8 to play the role of left and right positioning of the air inlet body.
[0028] like Figure 1 , Figure 2 As shown, in order to clamp and fix the air inlet body, the upper wall of the fixing frame 1 and near the four corners are fixedly connected with the first pillars 2, and the upper ends of the four groups of first pillars 2 are provided with a clamping structure for pressing against the air inlet body to form a fixed structure, and the clamping structure includes four groups of connecting seats 11, and the four groups of connecting seats 11 are respectively fixedly connected to the ends of the four groups of first pillars 2 away from the fixing frame 1, and the outer walls of the connecting seats 11 are distributed up and down and fixedly connected with two groups of sliding sleeves 12 in sequence, and the inner side wall of the sliding sleeve 12 is slidably connected with a sliding rod 13, and the sliding rod 13 and the sliding sleeve 12 are locked by a first hand screw 14. The first hand screw 14 is threadedly connected to the inner wall of the connecting head 15, and the second hand screw 16 is threadedly connected to the inner wall of the connecting head 15. The extension length and angle of the sliding rod 13 can be adjusted by loosening the first hand screw 14, and the second hand screw 16 can be conveniently adjusted to the upper edge of the air inlet body, so that the second hand screw 16, which is threadedly connected to the connecting head 15, can be rotated to make the end of the second hand screw 16 facing the air inlet body abut against the upper edge of the air inlet body, thereby clamping the air inlet body.
[0029] Working principle: after the air inlet body falls on the inner wall of the bracket 4, the lower wall of the air inlet body can be supported by the inner wall of the bracket 4 and the shape of the lower wall of the air inlet body is consistent. At the same time, the front and rear position can be positioned by the bracket 4. The hanging hole 6 is used to connect the common equipment on the market. After lifting, the rear center of gravity of the skin is detected, and the center of gravity is adjusted by installing the configuration block. Multiple groups of left limit plates 8 abut against the lower edge of the left end of the air inlet body to play a limiting role, and multiple groups of right limit plates 10 abut against the lower edge of the right end of the air inlet body, and cooperate with multiple groups of left limit plates 8 to play the role of left and right positioning of the air inlet body. Loosening the first hand screw 14 can adjust the extension length and angle of the sliding rod 13, and the second hand screw 16 can be more conveniently adjusted to the upper edge range of the air inlet body, so that the second hand screw 16 threadedly connected to the connecting head 15 is rotated so that the end of the second hand screw 16 facing the air inlet body abuts against the upper edge of the air inlet body, thereby clamping the air inlet body.
[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A device for fixing the center of gravity of an aircraft air inlet skin, characterized in that: The invention comprises a fixing frame (1), an air inlet duct body and a plurality of counterweight blocks (17), wherein the upper wall of the fixing frame (1) is provided with three groups of brackets (3) from left to right in sequence, and the upper walls of the three groups of brackets (3) are all provided with a supporting structure for supporting the air inlet duct body, and the upper wall of the fixing frame (1) is fixedly connected with four groups of hanging arms (5), and the four groups of hanging arms (5) are all provided on the upper wall of the fixing frame (1) and are arranged in groups of two, respectively, close to the front wall and the rear wall of the fixing frame (1), and the inner walls of the ends of the four groups of hanging arms (5) away from the fixing frame (1) are all provided with a suspension structure, and the upper wall of the fixing frame (1) and close to the front wall and the rear wall of the fixing frame (1) are fixedly connected with the four groups of hanging arms (5). A plurality of groups of second pillars (7) are arranged at the left wall position, and the upper ends of the plurality of groups of the second pillars (7) are all provided with a left positioning structure for positioning the lower edge of the left end of the air inlet duct body. A plurality of groups of third pillars (9) are arranged at the upper wall of the fixing frame (1) and near the right wall position, and the upper ends of the plurality of groups of the third pillars (9) are all provided with a right positioning structure for positioning the lower edge of the right end of the air inlet duct body. The upper wall of the fixing frame (1) and near the four corners are all fixedly connected with first pillars (2), and the upper ends of the four groups of the first pillars (2) are all provided with a clamping structure for pressing against the air inlet duct body to form a fixed structure.
2. The device for fixing the center of gravity of an aircraft air inlet skin according to claim 1, characterized in that: The supporting structure comprises three groups of brackets (4), the three groups of brackets (4) being respectively arranged on a side of the three groups of brackets (3) away from the fixing frame (1), and the shapes of the inner side walls of the three groups of brackets (4) are consistent with the outer shape of the lower wall portion of the air inlet body.
3. The device for fixing the center of gravity of an aircraft air inlet skin according to claim 2, characterized in that: The suspension structure comprises four groups of hanging holes (6), and the four groups of hanging holes (6) are respectively arranged on the inner walls of four groups of hanging arms (5) and are all located at an end away from the fixing frame (1).
4. The device for fixing the center of gravity of an aircraft air inlet skin according to claim 3, characterized in that: The left positioning structure comprises a plurality of groups of left limit plates (8), and the plurality of groups of left limit plates (8) are respectively fixedly connected to one end of the plurality of groups of second pillars (7) away from the fixing frame (1).
5. The device for fixing the center of gravity of an aircraft air inlet skin according to claim 4, characterized in that: The right positioning structure comprises a plurality of groups of right limiting plates (10), and the plurality of groups of right limiting plates (10) are respectively fixedly connected to one end of the plurality of groups of third pillars (9) away from the fixing frame (1).
6. The device for fixing the center of gravity of an aircraft air inlet skin according to claim 5, characterized in that: The clamping structure comprises four groups of connecting seats (11), the four groups of connecting seats (11) are respectively fixedly connected to one end of the four groups of first pillars (2) away from the fixing frame (1), the outer wall of the connecting seat (11) is distributed up and down and fixedly connected with two groups of sliding sleeves (12) in sequence, the inner wall of the sliding sleeve (12) is slidably connected with a sliding rod (13), the sliding rod (13) and the sliding sleeve (12) are locked by a first hand screw (14), one end of the sliding rod (13) passes through the sliding sleeve (12) and extends toward the outside of the sliding sleeve (12), one end of the sliding rod (13) extending to the outer wall of the sliding sleeve (12) is fixedly connected with a connecting head (15), and the inner wall of the connecting head (15) is threadedly connected with a second hand screw (16).