Turnover device for shape maintaining tool outside fuselage of domestic large aircraft
By employing rigid connections, servo drives, and adaptive ball joint connectors, the safety and accuracy issues of the flipping device were resolved, enabling the safe and efficient flipping and positioning of large aircraft fuselage components, and improving the versatility and adaptability of the flipping device.
Patent Information
- Application Number
- CN202511894536.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-15
- Publication Date
- 2026-02-03
AI Technical Summary
Existing flipping devices suffer from poor safety, low positioning accuracy, low operating efficiency, and easy damage to products when flipping large aircraft fuselage components. In particular, the large change in the center of gravity during the flipping process can easily cause swaying, slippage, and overturning risks, affecting assembly accuracy and safety.
Employing rigid connections and dual safety locks, combined with servo drive and angle feedback closed-loop control, and equipped with adaptive ball joint connectors and locking mechanisms, it achieves safety and precise control of the flipping device, and is compatible with tooling for different aircraft models.
It improves the safety and accuracy of the flipping device, reduces manual intervention, increases operational efficiency, and ensures the stability and versatility of the positional relationship between the tooling and the machine body.
Smart Images
Figure CN121448635A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of aircraft assembly tooling, in particular to a turnover device for the outer mold line tooling of a domestic large aircraft fuselage. BACKGROUND
[0002] In the assembly process of aircraft fuselage components, the outer mold line tooling is used to support and position the fuselage skin, stringers and other structures from the outside to ensure the shape accuracy. For large components such as fuselage, it is necessary to turn over the entire component with the outer mold line tooling installed due to the need for convenient operation, internal assembly or detection. Currently, the common turnover method mainly relies on large bridge cranes with lifting belts or simple turnover frames, but the existing turnover devices have significant defects: poor safety, large variation of the center of gravity of the tooling and fuselage component during turnover, easy to produce shaking, slipping or even overturning risk, which poses a safety risk to the operator and causes damage to the product; low positioning accuracy, hoisting and turnover is difficult to accurately control the turnover axis and angle, which easily leads to changes in the relative position of the tooling and fuselage, affecting the assembly accuracy; low operation efficiency, complex preparation work, long turnover process, high dependence on operator experience; easy to damage the product, the turnover method with insufficient rigidity or uneven stress may transmit improper stress to the fuselage semi-finished product, causing deformation or damage; in view of the above situation, a turnover device for the outer mold line tooling of a domestic large aircraft fuselage is proposed. SUMMARY
[0003] In order to solve the problems of poor safety of the original turnover device, large variation of the center of gravity of the tooling and fuselage component during turnover, easy to produce shaking, slipping and overturning risk, which poses a safety risk to the operator and causes damage to the product; low positioning accuracy, hoisting and turnover is difficult to accurately control the turnover axis and angle, which easily leads to changes in the relative position of the tooling and fuselage, affecting the assembly accuracy; low operation efficiency, complex preparation work, long turnover process, high dependence on operator experience; easy to damage the product, causing deformation or damage, the present application provides a turnover device for the outer mold line tooling of a domestic large aircraft fuselage, which avoids the risk of device overturning through rigid connection and double safety locking, reduces personnel intervention through automation operation, improves safety and assembly efficiency; the device adopts servo drive and angle feedback closed-loop control, the turnover angle is accurately controllable, which ensures the stability of the relative position relationship between the tooling and fuselage, and improves the turnover precision; the device adopts adjustable cantilever connection end and multiple self-centering ball hinge connectors, which can adapt to the turnover of highland and ordinary aircraft tooling outer mold line frame, improving the versatility and adaptability of the device.
[0004] The technical scheme of the present application is: a turnover device for a domestic large aircraft fuselage outer mold tooling, comprising: a first rigid base frame, one end of the first rigid base frame is connected to a second rigid base frame, the other end of the first rigid base frame is connected to a slave transmission shaft, the slave transmission shaft is connected to a second bearing, and the second bearing is connected to a second bearing seat; the second rigid base frame is connected to a main transmission shaft, the main transmission shaft is connected to a first bearing, the first bearing is connected to a first bearing seat, and the first bearing seat is connected to a drive control structure.
[0005] Further, the drive control structure comprises: a speed reducer connected to a servo motor, the speed reducer and the servo motor control the rotation of the main transmission shaft, and the main transmission shaft drives the rotation of the slave transmission shaft.
[0006] Further, the first rigid base frame is provided with a first self-adapting ball hinge connector and a first locking mechanism, and the first self-adapting ball hinge connector and the first locking mechanism are provided with a third self-adapting ball hinge connector and a third locking mechanism at corresponding positions; the second rigid base frame is provided with a second self-adapting ball hinge connector and a second locking mechanism, and the second self-adapting ball hinge connector and the second locking mechanism are provided with a fourth self-adapting ball hinge connector and a fourth locking mechanism at corresponding positions.
[0007] Further, the first self-adapting ball hinge connector, the second self-adapting ball hinge connector, the third self-adapting ball hinge connector and the fourth self-adapting ball hinge connector are consistent in structure, the self-adapting ball hinge connector is internally spherical in structure, a ball socket-shaped thread is arranged on the outer wall of the self-adapting ball hinge connector, the self-adapting ball hinge connector is connected with a ball head of the outer mold tooling, and is fixed through a nut provided by the outer mold tooling.
[0008] Further, the first locking mechanism, the second locking mechanism, the third locking mechanism and the fourth locking mechanism are consistent in structure, the locking mechanism comprises a guide groove, one side of the locking mechanism is provided with a latch, the outer mold tooling comprises an outer mold frame guide column, the outer mold frame guide column is inserted into the guide groove, and the guide groove and the outer mold frame guide column are both provided with a round hole matched with the latch on the two sides of the outer wall.
[0009] Further, the first bearing seat is connected to a first stand column, and the second bearing seat is connected to a second stand column.
[0010] Further, the first stand column near the first rigid base frame and the second stand column near the second rigid base frame are both provided with a limiting device, and the limiting device judges the degree of turnover through an infrared signal emitting device.
[0011] Further, the first rigid base frame is provided with a first counterweight frame near the first stand column, and a first counterweight block is arranged in the counterweight frame; the second rigid base frame is provided with a second counterweight frame near the second stand column, and a second counterweight block is arranged in the counterweight frame.
[0012] Further, the first counterweight frame and the second counterweight frame are both provided with additional self-adaptive ball hinge connectors for adapting to different models of outer mold line tooling.
[0013] Further, the first flange support is connected to the outer periphery of the transmission shaft, the first flange support is connected to the end of the first rigid base frame, the second flange support is connected to the main transmission shaft, and the second flange support is connected to the end of the second rigid base frame.
[0014] The present application has the following advantages: the present application provides a turnover device for domestic large aircraft fuselage outer mold line tooling, which completely eliminates the risk of overturning and improves safety through rigid connection and double safety locking; the device adopts servo drive and angle feedback closed-loop control, and the turnover angle is accurately controllable, which ensures the stability of the relative position relationship between the tooling and the fuselage and improves the turnover precision; the device is provided with multiple self-centering ball hinge connectors, which can adapt to the turnover of plateau type and ordinary type aircraft tooling outer mold line frame, and improves the universality and adaptability. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 is a structure schematic view of the turnover device of the present application; Figure 2 is a top view of the turnover device of the present application; Figure 3 is a structure schematic view of a part of the turnover device of the present application; Figure 4 is a structure schematic view of a partial enlarged view of the third self-adaptive ball hinge connector of the present application; Figure 5 is a partial enlarged view of the locking mechanism structure of the present application; Figure 6 is a sectional view of the turnover device of the present application; Figure 7 is a structure schematic view of the turnover device of the present application after assembling the outer mold line tooling; Legend: 1 - first rigid base frame; 2 - second rigid base frame; 3 - first upright column; 4 - second upright column; 5 - speed reducer; 6 - first bearing seat; 7 - second bearing seat; 8 - first counterweight; 9 - second counterweight; 10 - first adaptive spherical hinge connector; 11 - second adaptive spherical hinge connector; 12 - third adaptive spherical hinge connector; 13 - fourth adaptive spherical hinge connector; 14 - first locking mechanism; 15 - second locking mechanism; 16 - third locking mechanism; 17 - fourth locking mechanism; 18 - first flange support; 19 - slave transmission shaft; 20 - second bearing; 21 - second flange support; 22 - main transmission shaft; 23 - first bearing; 24 - outer protective frame guide column; 25 - bolt. DETAILED DESCRIPTION
[0016] The technical solutions in the embodiments of the present application will be described in detail below with reference to the drawings and embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0017] In the description of the present application, it is necessary to understand that the orientations or positional relationships indicated by "up", "down", "left", "right", "inner", "outer", "top", "bottom", etc. are based on the orientations or positional relationships shown in the drawings, and the purpose is only to facilitate the description of the present application and simplify the description, and it does not indicate or imply that the indicated components must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.
[0018] In addition, if the terms "first", "second", "third", etc. appear, they are only used for differentiation in description and cannot be understood as indicating or implying relative importance. If the terms "horizontal", "vertical", "overhanging", etc. appear, they do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.
[0019] In the description, it should be noted that unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, unless otherwise specified, the meaning of "multiple" is two or more.
[0020] Figure 1 is a structural schematic diagram of the overturning device of the present application; Figure 2 is a top view of the overturning device of the present application; Figure 3 is a structural schematic diagram of a part of the overturning device of the present application; Figure 4 is a structural schematic diagram of a partial enlarged view of the self-adaptive spherical hinge connector of the present application; Figure 5 is a partial enlarged view of the structure of the locking mechanism of the present application; Figure 6 is a sectional view of the overturning device of the present application; Figure 7 is a structural schematic diagram of the overturning device of the present application after being assembled with the outer mold line tooling; as shown in Figures 1 to 7 The present application provides an overturning device for outer mold line tooling of a domestic large aircraft fuselage, comprising: a first rigid base frame 1, one end of the first rigid base frame 1 is rigidly connected with a second rigid base frame 2, the first rigid base frame 1 and the second rigid base frame 2 are fixed at the edges by bolts, the top ends of the first rigid base frame 1 and the second rigid base frame 2 are installed with outer mold line tooling, the outer mold line tooling is used for fixing a component to be operated, the other end of the first rigid base frame 1 is connected with a slave transmission shaft 19, the slave transmission shaft 19 is connected with a second bearing 20, and the second bearing 20 is connected with a second bearing seat 7; the number of the second bearing 20 is two, which are arranged at both ends of the slave transmission shaft 19.
[0021] The second rigid base frame 2 is connected with a main transmission shaft 22, the main transmission shaft 22 is connected with a first bearing 23, the first bearing 23 is connected with a first bearing seat 6, the first bearing seat 6 is connected with a drive control structure, and the number of the first bearing 23 is two, which are arranged at both ends of the main transmission shaft 22.
[0022] The drive control structure comprises: a speed reducer 5 connected with a servo motor, the speed reducer 5 and the servo motor control the rotation of the main transmission shaft 22, and the main transmission shaft 22 drives the rotation of the slave transmission shaft 19.
[0023] The first rigid base frame 1 is provided with a first self-adaptive spherical hinge connector 10 and a first locking mechanism 14, and the first self-adaptive spherical hinge connector 10 and the first locking mechanism 14 are provided with a third self-adaptive spherical hinge connector 12 and a third locking mechanism 16 at corresponding positions; the second rigid base frame 2 is provided with a second self-adaptive spherical hinge connector 11 and a second locking mechanism 15, and the second self-adaptive spherical hinge connector 11 and the second locking mechanism 15 are provided with a fourth self-adaptive spherical hinge connector 13 and a fourth locking mechanism 17 at corresponding positions.
[0024] The first adaptive ball hinge connector 10, the second adaptive ball hinge connector 11, the third adaptive ball hinge connector 12, and the fourth adaptive ball hinge connector 13 are structurally consistent, and the inside of the adaptive ball hinge connector is in a spherical structure, a ball socket-shaped thread is arranged at the outer wall, after the bottom ball head of the external preservation tool is inserted into the adaptive ball hinge connector, the nut at the top of the ball head of the external preservation tool is tightened to realize the connection between the external preservation tool and the adaptive ball hinge connector, the adaptive ball hinge connector is used for connecting the external preservation frame, the external preservation tool is transported to the top of the first rigid base frame 1 and the second rigid base frame 2 by using a crane, the four bottom ball heads of the external preservation tool are respectively connected to the adaptive ball hinge connectors at the top of the first rigid base frame 1 and the second rigid base frame 2, the hooved block is inserted, and the positioning pin and the safety pin are inserted above the hooved block to protect the fixing device.
[0025] The first locking mechanism 14, the second locking mechanism 15, the third locking mechanism 16, and the fourth locking mechanism 17 are structurally consistent, the locking mechanism comprises a guide groove, one side of the locking mechanism is provided with a bolt 26, the external preservation tool comprises an external preservation frame guide column 25, the external preservation frame guide column 25 is inserted into the connecting guide groove, and the guide groove and the external preservation frame guide column 25 are both provided with a circular hole matched with the bolt 26 at the two sides of the outer wall.
[0026] The first bearing seat 6 is connected to the first vertical column 3, and the second bearing seat 7 is connected to the second vertical column 4.
[0027] The first vertical column 3 is provided with a limiting device near the first rigid base frame 1, and the second vertical column 4 is provided with a limiting device near the second rigid base frame 2, the limiting device judges the degree of turning through the emission of an infrared signal, the limiting device emits an infrared ray and transmits information to a control system when the external preservation tool is in an initial position and when the external preservation tool is turned to 180°.
[0028] The first rigid base frame 1 is provided with a first counterweight frame near the first vertical column 3, and the first counterweight block 8 is mounted in the first counterweight frame; the second rigid base frame 2 is provided with a second counterweight frame near the second vertical column 4, and the second counterweight block 9 is mounted in the second counterweight frame, the first counterweight block 8 and the second counterweight block 9 are used to ensure that the gravity center of the turning device does not change when the external preservation tool is turned, and the risk of overturning is avoided.
[0029] The first counterweight frame and the second counterweight frame are both provided with additional adaptive ball hinge connectors for adapting to different models of external preservation tools.
[0030] In the present application, the first adaptive ball hinge connector 10, the second adaptive ball hinge connector 11, the third adaptive ball hinge connector 12, and the fourth adaptive ball hinge connector 13 are used to adapt to the conventional type of outer protective tooling. In practice, the length of the first rigid base frame 1 and the second rigid base frame 2 and the weight of the counterweight can be adjusted according to specific needs, and the position of the additional adaptive ball hinge connector can be adjusted, thereby improving the adaptability of the device.
[0031] The first flange support 18 is connected to the outer periphery of the slave transmission shaft 19, the first flange support 18 is connected to the end of the first rigid base frame 1, the main transmission shaft 22 is connected to the second flange support 21, and the second flange support 21 is connected to the end of the second rigid base frame 2.
[0032] In practice, the outer protective tooling is transported to the top of the turnover device using a lifting appliance, the four ball heads at the bottom of the outer protective tooling are aligned with the adaptive ball hinge connectors at the top of the turnover device, at this time the lower outer protective tooling, the ball head at the bottom of the outer protective tooling is connected with the ball socket of the adaptive ball hinge connector, at this time the nut is tightened, the hoof-shaped block is inserted, and the safety pin is inserted on the side of the hoof-shaped block for protecting the fixing device; the device is connected with a control system, a power supply switch is started, the turnover device is opened, the control system is operated, the control system includes a display screen, the ball socket state is checked through the screen, the turnover device is started, the reducer and the servo motor drive the main transmission shaft to rotate, the main transmission shaft is connected with the slave transmission shaft and drives the slave transmission shaft to rotate, when the outer protective tooling is turned over by 180°, the limiting device emits an electric signal to obtain the current outer protective tooling turning angle and transmits the information to the control system, and the control system can adjust the turning speed of the turnover device.
[0033] The present application provides a turnover device for domestic large aircraft fuselage outer protective tooling, the device comprises: a rigid base frame, the rigid frame comprises: a first rigid base frame and a second rigid base frame, one end of the first rigid base frame is rigidly connected with the second rigid base frame, the rigid base frame top end installs outer protective tooling, the outer protective tooling is used to fix the component to be operated, the both ends of the rigid frame are connected with main transmission shaft and slave transmission shaft respectively, the main transmission shaft is connected with the reducer, the reducer is connected with the servo motor, the reducer and the servo motor drive the main transmission shaft to rotate, the main transmission shaft drives the slave transmission shaft to rotate to realize the turnover of the device, the device is rigidly connected and double safety locking, which completely eliminates the risk of overturning and improves safety; the device adopts servo drive and angle feedback closed loop control, the turning angle is accurately controllable, which ensures the stability of the relative position relationship between the tooling and the fuselage and improves the turning precision; the device is provided with multiple self-centering ball hinge connectors, which can adapt to the turnover of the outer protective frame of the plateau type and ordinary type aircraft tooling, and improve the universality and adaptability.
[0034] Having described various embodiments of the application, it is to be understood that the above description is meant not to limit and not to encompass all of the possible embodiments covered by the claims. Many modifications and variations of this application can be apparent to those of ordinary skill in the art without departing from the spirit and scope of the described embodiments. It is intended that the scope of the application should only be limited by the appended claims.
Claims
1. A flipping device for a shape-protection tooling for the fuselage of a domestically produced large aircraft, comprising: The first rigid base frame (1) is characterized in that: one end of the first rigid base frame (1) is connected to the second rigid base frame (2), and the other end of the first rigid base frame (1) is connected to the drive shaft (19), the drive shaft (19) is connected to the second bearing (20), and the second bearing (20) is connected to the second bearing seat (7); the second rigid base frame (2) is connected to the main drive shaft (22), the main drive shaft (22) is connected to the first bearing (23), the first bearing (23) is connected to the first bearing seat (6), and the first bearing seat (6) is connected to the drive control structure.
2. The flipping device for the shape-maintaining tooling of the fuselage of a domestically produced large aircraft according to claim 1, characterized in that: The drive control structure includes: a reducer (5), which is connected to a servo motor. The reducer (5) and the servo motor control the rotation of the main drive shaft (22), and the main drive shaft (22) drives the rotation of the secondary drive shaft (19).
3. The flipping device for the shape-maintaining tooling of the fuselage of a domestically produced large aircraft according to claim 2, characterized in that: The first rigid base frame (1) is provided with a first adaptive ball joint connector (10) and a first locking mechanism (14), and a third adaptive ball joint connector (12) and a third locking mechanism (16) are provided at the corresponding positions of the first adaptive ball joint connector (10) and the first locking mechanism (14); the second rigid base frame (2) is provided with a second adaptive ball joint connector (11) and a second locking mechanism (15), and a fourth adaptive ball joint connector (13) and a fourth locking mechanism (17) are provided at the corresponding positions of the second adaptive ball joint connector (11) and the second locking mechanism (15).
4. The flipping device for the shape-maintaining tooling of the fuselage of a domestically produced large aircraft according to claim 3, characterized in that: The first adaptive ball joint connector (10), the second adaptive ball joint connector (11), the third adaptive ball joint connector (12), and the fourth adaptive ball joint connector (13) have the same structure. The adaptive ball joint connector has a spherical structure inside and a ball-and-socket thread on its outer wall. The adaptive ball joint connector is connected to the ball head of the outer protective tooling and is fixed by the nut that comes with the outer protective tooling.
5. The flipping device for the shape-maintaining tooling of the fuselage of a domestically produced large aircraft according to claim 4, characterized in that: The first locking mechanism (14), the second locking mechanism (15), the third locking mechanism (16), and the fourth locking mechanism (17) have the same structure. The locking mechanism includes a guide groove and a pin (26) is provided on one side of the locking mechanism. The outer protective tooling includes an outer protective frame guide post (25). The outer protective frame guide post (25) is inserted into the connecting guide groove. The guide groove and the outer walls of the outer protective frame guide post (25) are both provided with round holes that match the pin (26).
6. The flipping device for the shape-maintaining tooling of the fuselage of a domestically produced large aircraft according to claim 2, characterized in that: The first bearing housing (6) is connected to the first column (3), and the second bearing housing (7) is connected to the second column (4).
7. The flipping device for the shape-maintaining tooling of the fuselage of a domestically produced large aircraft according to claim 1, characterized in that: The first column (3) is provided with a limiting device near the first rigid base frame (1), and the second column (4) is provided with a limiting device near the second rigid base frame (2). The limiting device determines the degree of device flipping by emitting infrared signals.
8. The flipping device for the shape-maintaining tooling of the fuselage of a domestically produced large aircraft according to claim 7, characterized in that: The first rigid base frame (1) is provided with a first counterweight frame near the first column (3), and a first counterweight block (8) is installed inside the counterweight frame; the second rigid base frame (2) is provided with a second counterweight frame near the second column (4), and a second counterweight block (9) is installed inside the counterweight frame.
9. The flipping device for the shape-maintaining tooling of the fuselage of a domestically produced large aircraft according to claim 8, characterized in that: Both sides of the first and second counterweight frames are equipped with additional adaptive ball joint connectors to adapt to different models of external protective tooling.
10. The flipping device for the shape-maintaining tooling of the fuselage of a domestically produced large aircraft according to claim 1, characterized in that: The first flange bracket (18) is connected to the outer periphery of the drive shaft (19), the first flange bracket (18) is connected to the end of the first rigid base frame (1), the main drive shaft (22) is connected to the second flange bracket (21), and the second flange bracket (21) is connected to the end of the second rigid base frame (2).