A large composite spherical frame assembly device

Abstract

The application provides a large composite spherical frame assembly device, and belongs to the technical field of aircraft assembly. The device specifically comprises an annular support seat installed on the top of a support frame, which is used for installing an annular frame; a lifting column installed on the support frame, the center of the lifting column corresponding to that of the annular support seat; an umbrella-shaped framework installed on the lifting end of the lifting column, which is in contact with the inner surface of a composite spherical skin and used for supporting the composite spherical skin, the lifting column being used for driving the umbrella-shaped framework to lift; a plurality of arc-shaped pressing edges installed on the annular support frame through a connecting frame and rotating, the connecting frame rotating to drive the arc-shaped pressing edges to approach or move away from the umbrella-shaped framework; and a locking assembly used for locking the rotation of the connecting frame when the arc-shaped pressing edges press the composite spherical skin on the umbrella-shaped framework. Through the processing scheme, the efficiency and accuracy of the assembly of the large composite spherical frame are improved.

Description

Technical Field

[0001] This application relates to the field of aircraft assembly, and in particular to an assembly apparatus for large composite spherical frames. Background Technology

[0002] The spherical frame is the end frame of the pressurized cabin, primarily bearing the pressurized load inside the cabin and ensuring the integrity of the fuselage's airtight lines. The highly curved hemispherical shell bears the pressure load through membrane stress, making it more efficient than a planar frame structure. However, since the spherical frame is generally located in the aft fuselage retraction section, the complex outer contour of the fuselage structure makes the spherical frame a multi-curvature surface. Furthermore, the manufacturing deformation caused by forming large-diameter composite spherical skins, as well as difficulties in drilling holes in the composite material and compensating for gaps, present significant challenges to the assembly of the spherical frame. Summary of the Invention

[0003] In view of this, this application provides an assembly device for large composite spherical frames, which solves the problems in the prior art and improves the efficiency and accuracy of assembling large composite spherical frames.

[0004] This application provides a technical solution for assembling large composite spherical frames, using the following approach: An assembly device for large composite spherical frames, used to assemble composite spherical skins, Y-shaped parts, and annular frames, the assembly device comprising: Support frame; An annular support base is installed on the top of the support frame. The annular support base is used to install the annular frame. The annular support base is provided with a plurality of circumferentially distributed clamps for pressing the annular frame onto the annular support base. The annular support base is provided with positioning pins that correspond to the positioning holes on the annular frame. A lifting column is installed on a support frame. The center of the lifting column corresponds to the center of the annular support seat. The top of the lifting column is used to abut the vertex of the inner surface of the composite material ball skin. An umbrella-shaped frame is installed on the lifting end of the lifting column. The umbrella-shaped frame contacts the inner surface of the composite material ball skin and is used to support the composite material ball skin. The lifting column is used to drive the umbrella-shaped frame to rise and fall. Several arc-shaped clamping edges are rotatably mounted on an annular support frame via a connecting frame. One end of the connecting frame is rotatably connected to the annular support base, and the other end of the connecting frame is fixedly connected to the bottom end of the arc-shaped clamping edge. The middle part of the connecting frame is located above the annular frame. The rotation of the connecting frame causes the arc-shaped clamping edges to move closer to or away from the umbrella-shaped frame. When the arc-shaped clamping edges move away from the umbrella-shaped frame, the arc-shaped clamping edges and the connecting frame are located outside the range of the annular frame. A locking assembly is used to lock the rotation of the connecting frame when the arc-shaped pressing edge presses the composite ball skin onto the umbrella-shaped frame; The positioner, mounted on the annular support, is used to engage with the steel cable on the composite ball skin through holes to position the circumferential position of the composite ball skin and the annular frame.

[0005] Optionally, the positioner includes a mounting base, a rotating frame, a sleeve, and a pin. The mounting base is fixed on an annular support base. One end of the rotating frame is rotatably mounted on the mounting base, and the sleeve is mounted on the other end of the rotating frame. The rotation of the rotating frame causes the sleeve to move closer to or away from the umbrella-shaped frame. When the sleeve is close to the umbrella-shaped frame, the pin is inserted into the sleeve and extends into the steel cable through hole. When the sleeve is away from the umbrella-shaped frame, the rotating frame and the sleeve are located outside the range of the annular frame.

[0006] Optionally, the lifting column includes a central support column, a lifting drive assembly, and a lifting shaft. The bottom end of the central support column is fixed on a support frame, the lifting drive assembly is mounted on the central support column, and the lifting shaft is mounted on the output end of the lifting drive assembly.

[0007] Optionally, the umbrella-shaped frame includes multiple arc-shaped rods, which are evenly distributed around the central support column. The top ends of the multiple arc-shaped rods are connected to the lifting shaft, and the bottom ends of the arc-shaped rods are suspended.

[0008] Optionally, two adjacent arc-shaped rods are fixedly connected by a connecting rod, and the connecting rod and the arc-shaped rod are fixedly connected at the middle.

[0009] Optionally, the locking assembly includes a mounting plate and a locking pin. The mounting plate and the connecting frame correspond one-to-one. The mounting plate is fixed on the annular support base, and the connecting frame is rotatably mounted on the mounting plate. The mounting plate is provided with a first insertion hole, and the connecting frame is provided with a second insertion hole. The arc-shaped pressing edge presses the composite ball skin onto the umbrella-shaped frame, aligning the first insertion hole and the second insertion hole. One end of the locking pin passes through the first insertion hole and the second insertion hole.

[0010] Optionally, the clamping device includes a sleeve, a vertical rod, a horizontal rod, and a clamping bolt; the sleeve is fixed on the annular support base, the bottom end of the vertical rod extends into the sleeve, and the vertical rod and the sleeve are rotatably connected, the rotation axis of the vertical rod is set in the vertical direction, and a locking bolt is threaded on the side wall of the sleeve, one end of the locking bolt passes through the side wall of the sleeve and abuts against the circumferential side wall at the bottom end of the vertical rod; One end of the horizontal bar is fixedly connected to the vertical bar, and the other end of the clamping bolt is threadedly connected to the end of the horizontal bar away from the vertical bar. The length direction of the clamping bolt is set in the vertical direction, and the bottom end of the clamping bolt is used to press against the upper surface of the annular frame. In summary, this application includes the following beneficial technical effects: This application solves the assembly difficulties of large composite spherical frames and proposes a method to ensure the installation accuracy control and functional performance of large composite spherical frames. The device of this application has successfully solved the current assembly difficulties of spherical frames with a diameter of 4150mm, completing a series of tasks such as hole making, gluing, compensation, and connection of the spherical frame, realizing the precise assembly and application of the spherical frame. This effectively ensures product quality and greatly reduces product manufacturing costs, possessing significant social and economic benefits. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 A schematic diagram of a composite spherical frame assembly; Figure 2 This is a schematic diagram of the mating structure of the composite material spherical skin, Y-shaped component, and annular frame; Figure 3 This is a schematic diagram of the overall structure of the assembly device of this application.

[0013] Explanation of reference numerals in the attached drawings: 1. Composite material spherical skin; 2. Y-shaped component; 3. Annular frame; 4. Support frame; 5. Annular support seat; 51. Clamping device; 52. Sleeve; 53. Vertical rod; 54. Horizontal rod; 55. Clamping bolt; 6. Lifting column; 61. Central support column; 62. Lifting drive assembly; 63. Lifting shaft; 7. Umbrella-shaped frame; 71. Arc-shaped clamping edge; 72. Locking assembly; 721. Connecting frame; 722. Mounting plate; 723. Locking pin; 73. Arc-shaped rod; 74. Connecting rod; 8. Positioner; 81. Mounting seat; 82. Rotating frame; 83. Sleeve; 84. Pin; 85. Cable through hole. Detailed Implementation

[0014] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0015] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0016] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0017] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The illustrations only show the components related to this application and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0018] Furthermore, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the described aspects can be practiced without these specific details.

[0019] This application provides an assembly device for large composite spherical frames.

[0020] Figure 1 and Figure 2 As shown, an assembly device for a large composite spherical frame is used to assemble a composite spherical skin 1, a Y-shaped component 2, and an annular frame 3, wherein multiple Y-shaped components 2 are joined together to form a closed annular structure.

[0021] like Figure 3 As shown, the assembly device includes: Support frame 4; An annular support base 5 is installed on the top of the support frame 4. The annular support base 5 is used to install the annular frame 3. The annular support base 5 is provided with a plurality of circumferentially distributed clamps 51 for pressing the annular frame 3 onto the annular support base 5. The annular support base 5 is provided with positioning pins corresponding to the positioning holes on the annular frame 3. The lifting column 6 is installed on the support frame 4. The center of the lifting column 6 corresponds to the center of the annular support seat 5. The top of the lifting column 6 is used to abut the vertex of the inner surface of the composite material ball skin 1. An umbrella-shaped frame 7 is installed on the lifting end of the lifting column 6. The umbrella-shaped frame 7 is in contact with the inner surface of the composite material ball skin 1 and is used to support the composite material ball skin 1. The lifting column 6 is used to drive the umbrella-shaped frame 7 to rise and fall. Several arc-shaped clamping edges 71 are rotatably mounted on an annular support frame via a connecting frame 721. One end of the connecting frame 721 is rotatably connected to the annular support base 5, and the other end of the connecting frame 721 is fixedly connected to the bottom end of the arc-shaped clamping edge 71. The middle part of the connecting frame 721 is located above the annular frame 3. The rotation of the connecting frame 721 causes the arc-shaped clamping edge 71 to move closer to or away from the umbrella-shaped frame 7. When the arc-shaped clamping edge 71 moves away from the umbrella-shaped frame 7, the arc-shaped clamping edge 71 and the connecting frame 721 are located outside the range of the annular frame 3. Locking assembly 72 is used to lock the rotation of connecting frame 721 when the arc-shaped pressing edge 71 presses the composite material ball skin 1 onto the umbrella-shaped frame 7; Positioner 8, installed on the annular support 5, is used to cooperate with the steel cable through hole 85 on the composite ball skin 1 to position the circumferential position of the composite ball skin 1 and the annular frame 3.

[0022] Due to the large diameter of the spherical frame, and considering the impact of manual operation on product quality, assembly was carried out vertically downwards in the flight direction. This allows workers to stand upright around the spherical frame, avoiding the difficulties faced by workers operating from above when the product is in its current position. The specific assembly process for the spherical frame is as follows: Step 1: Place the annular frame 3 with its web surface facing down on the annular support 5. The annular support 5 has positioning holes corresponding to the positioning holes on the annular frame 3. After aligning the positioning holes on the annular support 5 and the annular frame 3, insert a positioning pin to position the annular frame 3 on the annular support 5. Then, use the clamping device 51 to press the annular frame 3 firmly onto the annular support 5, fixing its position on the annular support 5. Then... Step 2: The V-shaped surfaces of the multiple Y-shaped parts 2 are respectively attached to the upper surface and the flange of the annular frame 3. The positions of the Y-shaped parts 2 on the annular frame 3 are positioned according to the pre-set positioning holes and positioning pins. In this embodiment, there are ten Y-shaped parts 2. After the positioning of the ten Y-shaped parts 2 is completed, the step difference between the Y-shaped parts 2 is checked.

[0023] Step 3: Using the guide hole of Y-shaped part 2 as a guide hole, drill the initial hole on the annular frame 3 to pre-assemble and connect the annular frame 3 and Y-shaped part 2. Specifically, using a vertical drill bushing, with the guide hole on the Y-shaped part 2 as the guide hole, drill the initial hole on the annular frame 3, and pre-assemble using process screws.

[0024] Step 4: With the concave surface of the composite ball skin 1 facing the umbrella-shaped frame 7, place the composite ball skin 1 on the umbrella-shaped frame 7, and align the steel cable on the composite ball skin 1 with the positioner 8 through the hole 85 to control the heading, elevation, and circumferential direction of the composite ball skin 1. With the concave surface in contact with the umbrella-shaped frame 7, insert the positioner 8 into the positioning hole of the ball skin; flip the arc-shaped pressing edge 71 and press it firmly against the convex surface of the composite ball skin 1, so that the composite ball skin 1 fits tightly against the umbrella-shaped frame 7.

[0025] Step 5: Drill the initial hole for the composite material ball skin 1 using the guide hole on the Y-shaped component 2, and then enlarge and ream the hole from the direction of the composite material ball skin 1. The drilling and connection of the composite material ball skin 1 and the Y-shaped component 2 are carried out evenly to prevent excessive local gaps after the composite material ball skin 1 and the Y-shaped component 2 are connected, which would affect the stress.

[0026] Flip the curved clamping edge 71 away from the composite material spherical skin 1, open the positioner 8, and drive the lifting column 6 to rise, causing the umbrella-shaped frame 7 and the composite material spherical skin 1 to rise, leaving a 50mm gap between the composite material spherical skin 1 and the Y-shaped component 2 for adhesive application. Then, screws are passed through the connection holes between the composite material spherical skin 1 and the Y-shaped component 2 to complete the connection. The lifting column 6 allows the spherical skin to be raised and lowered along the flight direction, leaving sufficient space for adhesive application and avoiding the inefficiency and low safety issues associated with hoisting the composite material spherical skin.

[0027] Step 6: Remove from shelf and perform flaw detection inspection.

[0028] The lifting column 6 includes a central support column 61, a lifting drive assembly 62, and a lifting shaft 63. The bottom end of the central support column 61 is fixed to the support frame 4. The lifting drive assembly 62 is mounted on the central support column 61, and the lifting shaft 63 is mounted on the output end of the lifting drive assembly 62. In this embodiment, the lifting drive assembly 62 is a cylinder, a linear electric cylinder, or a manual vertical screw jack.

[0029] The umbrella-shaped frame 7 includes multiple arc-shaped rods 73, which are evenly distributed circumferentially along the central support column 61. The top ends of the arc-shaped rods 73 are connected to the lifting shaft 63, and the bottom ends of the arc-shaped rods 73 are suspended. Adjacent arc-shaped rods 73 are fixedly connected by a connecting rod 74, which is fixedly connected to the middle of the arc-shaped rod 73.

[0030] The locking assembly 72 includes a mounting plate 722 and a locking pin 723. The mounting plate 722 and the connecting frame 721 correspond one-to-one. The mounting plate 722 is fixed on the annular support 5, and the connecting frame 721 is rotatably mounted on the mounting plate 722. The mounting plate 722 has a first insertion hole, and the connecting frame 721 has a second insertion hole. The arc-shaped pressing edge 71 presses the composite ball skin onto the umbrella-shaped frame 7, aligning the first and second insertion holes. One end of the locking pin 723 passes through the first and second insertion holes. The annular support 5 has a stop bar. When the connecting frame 721 and the arc-shaped pressing edge 71 rotate outside the range of the umbrella-shaped frame, the connecting frame 721 abuts against the stop bar to limit the outward rotation range of the connecting frame 721.

[0031] The positioner 8 includes a mounting base 81, a rotating frame 82, a sleeve 83, and a pin 84. The mounting base 81 is fixed on the annular support base 5. One end of the rotating frame 82 is rotatably mounted on the mounting base 81, and the sleeve 83 is mounted on the other end of the rotating frame 82. The rotation of the rotating frame 82 causes the sleeve 83 to move closer to or away from the umbrella-shaped frame 7. When the sleeve 83 moves closer to the umbrella-shaped frame 7, the pin 84 is inserted into the sleeve 83 and extends into the cable passage hole 85. When the sleeve 83 moves away from the umbrella-shaped frame 7, the rotating frame 82 and the sleeve 83 are located outside the range of the annular frame 3. In this embodiment, the connection structure between the mounting base 81 and the rotating frame 82 is the same as the mating structure between the mounting plate 722 and the connecting frame 721.

[0032] The clamping device 51 includes a sleeve 52, a vertical rod 53, a horizontal rod 54, and a clamping bolt 55. The sleeve 52 is fixed on the annular support 5. The bottom end of the vertical rod 53 extends into the sleeve 52, and the vertical rod 53 and the sleeve 52 are rotatably connected. The rotation axis of the vertical rod 53 is set in the vertical direction. A locking bolt is threaded on the side wall of the sleeve 52. One end of the locking bolt passes through the side wall of the sleeve 52 and abuts against the circumferential side wall at the bottom end of the vertical rod 53.

[0033] One end of the horizontal bar 54 is fixedly connected to the vertical bar 53, and the other end of the clamping bolt 55 is threadedly connected to the end of the horizontal bar 54 away from the vertical bar 53. The length direction of the clamping bolt 55 is set in the vertical direction, and the bottom end of the clamping bolt 55 is used to press against the upper surface of the annular frame 3.

[0034] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An assembly device for large composite spherical frames, used to assemble a composite spherical skin (1), a Y-shaped component (2), and an annular frame (3), characterized in that, The assembly device includes: Support frame (4); An annular support base (5) is installed on the top of the support frame (4). The annular support base (5) is used to install the annular frame (3). The annular support base (5) is provided with a plurality of circumferentially distributed clamps (51) for pressing the annular frame (3) onto the annular support base (5). The annular support base (5) is provided with positioning pins corresponding to the positioning holes on the annular frame (3). A lifting column (6) is installed on a support frame (4). The center of the lifting column (6) corresponds to the center of the annular support seat (5). The top of the lifting column (6) is used to abut the vertex of the inner surface of the composite material ball skin (1). An umbrella-shaped frame (7) is installed on the lifting end of the lifting column (6). The umbrella-shaped frame (7) contacts the inner surface of the composite material ball skin (1) and is used to support the composite material ball skin (1). The lifting column (6) is used to drive the umbrella-shaped frame (7) to rise and fall. Several arc-shaped clamping edges (71) are rotatably mounted on an annular support frame via a connecting frame (721). One end of the connecting frame (721) is rotatably connected to the annular support base (5), and the other end of the connecting frame (721) is fixedly connected to the bottom end of the arc-shaped clamping edge (71). The middle part of the connecting frame (721) is located above the annular frame (3). The rotation of the connecting frame (721) causes the arc-shaped clamping edge (71) to move closer to or away from the umbrella-shaped frame (7). When the arc-shaped clamping edge (71) moves away from the umbrella-shaped frame (7), the arc-shaped clamping edge (71) and the connecting frame (721) are located outside the range of the annular frame (3). Locking assembly (72) is used to lock the rotation of connecting frame (721) when the arc-shaped pressing edge (71) presses the composite ball skin (1) onto the umbrella frame (7); The positioner (8) is installed on the annular support (5) and is used to cooperate with the steel cable through hole (85) on the composite ball skin (1) to position the circumferential position of the composite ball skin (1) and the annular frame (3).

2. The assembly device for large composite spherical frames according to claim 1, characterized in that, The locator (8) includes a mounting base (81), a rotating frame (82), a sleeve (83), and a pin (84). The mounting base (81) is fixed on the annular support base (5). One end of the rotating frame (82) is rotatably mounted on the mounting base (81). The sleeve (83) is mounted on the other end of the rotating frame (82). The rotating frame (82) rotates to move the sleeve (83) closer to or away from the umbrella frame (7). When the sleeve (83) is close to the umbrella frame (7), the pin (84) is inserted into the sleeve (83) and extends into the cable passage hole (85). When the sleeve (83) is away from the umbrella frame (7), the rotating frame (82) and the sleeve (83) are located outside the range of the annular frame (3).

3. The assembly device for large composite spherical frames according to claim 1, characterized in that, The lifting column (6) includes a central support column (61), a lifting drive assembly (62), and a lifting shaft (63). The bottom end of the central support column (61) is fixed on the support frame (4). The lifting drive assembly (62) is installed on the central support column (61), and the lifting shaft (63) is installed on the output end of the lifting drive assembly (62).

4. The assembly device for large composite spherical frames according to claim 3, characterized in that, The umbrella-shaped frame (7) includes multiple arc-shaped rods (73), which are evenly distributed around the central support column (61). The top ends of the multiple arc-shaped rods (73) are connected to the lifting shaft (63), and the bottom ends of the arc-shaped rods (73) are suspended.

5. The assembly device for large composite spherical frames according to claim 4, characterized in that, The two adjacent arc-shaped rods (73) are fixedly connected by a connecting rod (74), and the connecting rod (74) and the arc-shaped rod (73) are fixedly connected at the middle.

6. The assembly device for large composite spherical frames according to claim 1, characterized in that, The locking assembly (72) includes a mounting plate (722) and a locking pin (723). The mounting plate (722) and the connecting frame (721) correspond one-to-one. The mounting plate (722) is fixed on the annular support base (5). The connecting frame (721) is rotatably mounted on the mounting plate (722). The mounting plate (722) is provided with a first insertion hole. The connecting frame (721) is provided with a second insertion hole. The arc-shaped pressing edge (71) presses the composite ball skin onto the umbrella-shaped frame (7), aligning the first insertion hole and the second insertion hole. One end of the locking pin (723) passes through the first insertion hole and the second insertion hole.

7. The assembly device for large composite spherical frames according to claim 1, characterized in that, The clamping device (51) includes a sleeve (52), a vertical rod (53), a horizontal rod (54), and a clamping bolt (55); the sleeve (52) is fixed on the annular support (5), the bottom end of the vertical rod (53) extends into the sleeve (52), and the vertical rod (53) and the sleeve (52) are rotatably connected. The rotation axis of the vertical rod (53) is set in the vertical direction. A locking bolt is threaded on the side wall of the sleeve (52), and one end of the locking bolt passes through the side wall of the sleeve (52) and abuts against the circumferential side wall at the bottom end of the vertical rod (53). One end of the horizontal bar (54) is fixedly connected to the vertical bar (53), and the other end of the clamping bolt (55) is threadedly connected to the end of the horizontal bar (54) away from the vertical bar (53). The length direction of the clamping bolt (55) is set in the vertical direction, and the bottom end of the clamping bolt (55) is used to press against the upper surface of the annular frame (3).

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