Aircraft cantilever straightening device

Abstract

The invention relates to the field of aircraft accessory machining equipment, in particular to an aircraft cantilever straightening device which comprises a straightening platform fixed to a base, an adjustable end limiting assembly arranged on the straightening platform and a straightening device arranged on the straightening platform, the adjustable end limiting assembly comprises inserting barrels symmetrically arranged at the two ends of the straightening platform. A portal frame is fixed to the straightening platform, a self-locking type pressurizing mechanism is arranged on the portal frame and comprises a first pressing plate and a second pressing plate, a second pressure sensor is fixedly connected between the first pressing plate and the second pressing plate, a vibrating mechanism is arranged on the self-locking type pressurizing mechanism, and the self-locking type pressurizing mechanism is connected with the vibrating mechanism through hydraulic transmission. According to the aircraft cantilever straightening device, the two ends of the cantilever are limited and restrained through the adjustable end limiting assemblies, pressure is applied to the bent position of the cantilever through the self-locking type pressurizing mechanism, hydraulic oil is used for driving the rapping mechanism to hammer the bent position of the cantilever, and straightening treatment on the cantilever is achieved.

Description

Technical Field

[0001] The invention relates to the field of aircraft parts processing equipment, in particular to an aircraft cantilever straightening device. Background Art

[0002] The cantilever of an aircraft is an important part of its fuselage structure. During the production and processing process, it will bend to a certain extent due to various processing factors and its own structural stress, which affects its safety in use. The cantilever needs to be straightened before assembling the aircraft. In view of this, we propose an aircraft cantilever straightening device. Summary of the invention

[0003] The object of the present invention is to provide an aircraft cantilever straightening device to solve the problems raised in the above background technology. To achieve the above object, the present invention provides the following technical solutions: an aircraft cantilever straightening device, comprising a straightening platform fixed on a base, a pad fixed on the upper surface of the straightening platform, and further comprising: An adjustable end stop assembly is arranged on the straightening platform, and the adjustable end stop assembly includes inserts symmetrically arranged at both ends of the straightening platform; A gantry is fixed on the straightening platform, and a self-locking pressurizing mechanism is arranged on the gantry, the self-locking pressurizing mechanism comprises a pressure plate 1 and a pressure plate 2, and a pressure sensor 2 is fixedly connected between the pressure plate 1 and the pressure plate 2, a vibration mechanism is arranged on the self-locking pressurizing mechanism, and the self-locking pressurizing mechanism and the vibration mechanism are connected by hydraulic transmission.

[0004] Preferably, the adjustable end limit assembly also includes a sliding rod 1 slidably connected to the two ends of the straightening platform, and the two sliding rods 1 are arranged in the same straight line and parallel to the plane of the straightening platform. A sliding sleeve is sleeved and slidably connected to the sliding rod 1, and a bracket 1 is fixed on the outer peripheral wall of the sliding sleeve. The two inserts are symmetrically hinged on the two brackets 1 respectively.

[0005] Preferably, a screw is rotatably connected to the bottom surface of the straightening platform, and the screw is arranged parallel to the sliding rod. Two sections of external threads with opposite rotation directions are provided on the circumferential wall of the screw near the two ends, and a motor is fixed to the bottom of the straightening platform, which is transmission-connected to the screw.

[0006] Preferably, two screw sleeves are connected on the screw rod by two sections of external threads, and a bracket two is fixed on the peripheral wall of the screw sleeve, one end of the slide rod one away from the straightening platform is fixedly connected to the corresponding bracket two, a slide cylinder is fixed on the bracket two, and a pressure sensor one is fixed on the end of the slide cylinder close to the bracket two, a slide rod two is fixed on the bracket one, and the slide rod two is inserted into the corresponding slide cylinder, and the end of the slide rod two located in the slide cylinder is in buckle contact with the pressure sensor one.

[0007] Preferably, the self-locking pressurizing mechanism also includes a hanger fixed in the middle of the gantry, the hanger is arranged perpendicular to the straightening platform, and a guide sleeve is fixed at one end of the hanger pointing to the straightening platform, a push rod is inserted and slidably connected in the guide sleeve, and a pressure plate is fixed at one end of the push rod pointing to the straightening platform.

[0008] Preferably, the middle part of the gantry is hinged to one end of connecting rod two, and the end of connecting rod two away from the gantry is hinged to one end of connecting rod one, the end of connecting rod one away from connecting rod two is hinged to one end of the top rod pointing to the gantry, when connecting rod one and connecting rod two are in a straight line, they are parallel to and in contact with the suspension rod, a support rod is fixed on the suspension rod, and an L-shaped lever is provided on the support rod, the inflection point of the lever is hinged to the support rod, one end of the lever is hinged to one end of connecting rod three, and the other end of connecting rod three is hinged to the end of connecting rod one away from the top rod, and the end of the lever away from connecting rod three is hinged to the push-pull rod.

[0009] Preferably, a pump barrel is hinged on the gantry, and a piston plate is slidably connected in the pump barrel, and the end of the push-pull rod away from the shift rod is fixedly connected to the piston plate, a hydraulic pump is fixed at the bottom of the straightening platform, and the hydraulic pump is connected to a hydraulic oil pipe, and one end of the hydraulic oil pipe is connected to the pump barrel, and the other end is connected to the hydraulic oil tank.

[0010] Preferably, the vibration mechanism includes a frame fixed on the top rod, and a heating coil for heating the cantilever is fixed on the frame, a fixed-axis rotating connecting shaft rod is arranged perpendicular to the top rod, and a pump wheel is fixed on the outside of one end of the frame, and the impeller shaft of the pump wheel is coaxially fixedly connected to the shaft rod, and a hydraulic oil pipe 2 is fixed on and connected to the peripheral wall of the pump wheel, one end of the hydraulic oil pipe 2 is connected to the pump barrel, and the other end is connected to the hydraulic oil pool, and a control valve is provided at the end of the hydraulic oil pipe 2 connected to the pump barrel.

[0011] Preferably, a cross bar is fixed inside the frame and is arranged parallel to the shaft rod. A plurality of worm gears are rotatably connected to the cross bar at equal intervals along the length direction. A plurality of worms corresponding to the worm gears are coaxially fixedly connected to the shaft rod, and the worms are meshingly connected to the corresponding worm gears.

[0012] Preferably, a plurality of hammer rods corresponding to the worm gear are penetrated and slidably connected on the frame near the straightening platform, and the hammer rods are arranged perpendicular to the straightening platform. A hammer head is fixed at one end of the hammer rod pointing to the straightening platform, and a slide is fixed at the other end. A pin rod is fixed at a position away from the center of the worm gear, and the pin rod is slidably connected to the corresponding slide.

[0013] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, the two ends of the cantilever are limited and constrained by an adjustable end limit assembly to avoid dangerous accidents of slipping during the straightening process. In addition, the adjustable end limit assembly can realize adaptive adjustment of the extension deformation of the end wall of the cantilever during the straightening process to ensure the straightening effect of the cantilever.

[0014] In the present invention, pressure is applied to the bend of the cantilever through a self-locking pressure-applying mechanism, and when the cantilever is in a straight state, it is in a self-locking state, thereby protecting the pump barrel. At the same time, the hydraulic oil is used to drive the vibration mechanism to hammer the bend of the cantilever, and the heating coil is used for heating treatment, so as to quickly and thoroughly release the internal stress of the bend of the cantilever, so that the stalemate state is in a peaceful state, thereby realizing the straightening treatment of the cantilever. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The general assembly structure of the present invention is shown in FIG. Figure 1 ; Figure 2 The general assembly structure of the present invention is shown in FIG. Figure 2 ; Figure 3 for Figure 2 A is an enlarged structural diagram; Figure 4 for Figure 1 The enlarged structural diagram at B in FIG. Figure 5 It is a schematic diagram of the cross-sectional structure of the pump barrel in the present invention.

[0016] In the figure: 1. base; 2. straightening platform; 3. motor; 4. hydraulic pump; 5. hydraulic oil pipe 1; 6. gantry; 7. suspension rod; 8. guide sleeve; 9. connecting rod 1; 10. connecting rod 2; 11. connecting rod 3; 12. support rod; 13. lever; 14. pump barrel; 15. push-pull rod; 16. push rod; 17. frame; 18. pump wheel; 19. hydraulic oil pipe 2; 20. shaft rod; 21. heating coil; 22. hammer rod; 23. , hammer head; 24, screw; 25, sleeve; 26, slide bar 1; 27, screw sleeve; 28, insert cylinder; 29, bracket 1; 30, bracket 2; 31, pad; 32, slide cylinder; 33, slide bar 2; 34, pressure sensor 1; 35, control valve; 36, piston plate; 37, worm; 38, worm wheel; 39, slide; 40, pin rod; 41, pressure plate 1; 42, pressure sensor 2; 43, pressure plate 2; 44, cross bar. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figures 1 to 5The present invention provides a technical solution: an aircraft cantilever straightening device, comprising a straightening platform 2 fixed on a base 1, a pad 31 fixed on the upper surface of the straightening platform 2, and further comprising: An adjustable end stop assembly is arranged on the straightening platform 2, and the adjustable end stop assembly includes an insert 28 symmetrically arranged at both ends of the straightening platform 2; A gantry 6 is fixed on the straightening platform 2, and a self-locking pressurizing mechanism is arranged on the gantry 6, the self-locking pressurizing mechanism includes a pressure plate 1 41 and a pressure plate 2 43, and a pressure sensor 2 42 is fixedly connected between the pressure plate 1 41 and the pressure plate 2 43, a vibration mechanism is arranged on the self-locking pressurizing mechanism, and the self-locking pressurizing mechanism and the vibration mechanism are connected by hydraulic transmission.

[0019] In this embodiment, the adjustable end limit assembly also includes a slide bar 26 slidably connected to the two ends of the straightening platform 2, and the two slide bars 26 are arranged in the same straight line and parallel to the plane of the straightening platform 2. A sliding sleeve 25 is sleeved and slidably connected to the slide bar 26, and a bracket 29 is fixed on the outer peripheral wall of the sliding sleeve 25. The two inserts 28 are symmetrically hinged on the two brackets 29 respectively. The bottom surface of the straightening platform 2 is rotatably connected with a screw rod 24, and the screw rod 24 is arranged parallel to the slide bar 26. Two sections of external threads with opposite rotation directions are opened on the peripheral wall of the screw rod 24 near the two ends, and the straightening platform A motor 3 is fixed to the bottom of the platform 2, and the motor 3 is connected to the screw 24 in transmission. The two screw sleeves 27 are connected on the screw 24 through two sections of external threads, and a bracket 2 30 is fixed on the peripheral wall of the screw sleeve 27. The end of the slide bar 26 away from the straightening platform 2 is fixedly connected to the corresponding bracket 2 30, a slide cylinder 32 is fixed to the bracket 2 30, and a pressure sensor 1 34 is fixed to the end of the slide cylinder 32 close to the bracket 2 30, a slide bar 2 33 is fixed to the bracket 1 29, and the slide bar 2 33 is inserted into the corresponding slide barrel 32, and the end of the slide bar 2 33 located in the slide barrel 32 is in contact with the pressure sensor 1 34.

[0020] In this embodiment, the self-locking pressurizing mechanism also includes a suspension rod 7 fixed in the middle of the gantry 6, the suspension rod 7 is arranged perpendicular to the straightening platform 2, and a guide sleeve 8 is fixed to one end of the suspension rod 7 pointing to the straightening platform 2, a push rod 16 is inserted and slidably connected in the guide sleeve 8, and a pressure plate 1 41 is fixed to one end of the push rod 16 pointing to the straightening platform 2, the middle part of the gantry 6 is hinged to one end of the connecting rod 2 10, and the end of the connecting rod 2 10 away from the gantry 6 is hinged to one end of the connecting rod 1 9, and the connecting rod 1 9 is away from the connecting rod 2 1 One end of 0 is hinged to one end of the top rod 16 pointing to the gantry 6, and when the connecting rod 19 and the connecting rod 2 10 are in a straight line, they are parallel to and in contact with the suspension rod 7. A support rod 12 is fixed to the suspension rod 7, and an L-shaped lever 13 is provided on the support rod 12. The inflection point of the lever 13 is hinged to the support rod 12, one end of the lever 13 is hinged to one end of the connecting rod 3 11, and the other end of the connecting rod 3 11 is hinged to one end of the connecting rod 19 away from the top rod 16, and the end of the lever 13 away from the connecting rod 3 11 is hinged to the push-pull rod 15.

[0021] In this embodiment, a pump barrel 14 is hinged on the gantry 6, and a piston plate 36 is slidably connected inside the pump barrel 14, and the end of the push-pull rod 15 away from the lever 13 is fixedly connected to the piston plate 36, and a hydraulic pump 4 is fixed to the bottom of the straightening platform 2, and the hydraulic pump 4 is connected to a hydraulic oil pipe 5, and one end of the hydraulic oil pipe 5 is connected to the pump barrel 14, and the other end is connected to a hydraulic oil pool. The hydraulic oil pool is not drawn in this application.

[0022] In this embodiment, the rapping mechanism includes a frame 17 fixed on the top rod 16, and a heating coil 21 for heating the cantilever is fixed on the frame 17, a fixed-axis rotating connecting shaft 20 is arranged perpendicular to the top rod 16, and a pump wheel 18 is fixed on one end of the frame 17 on the outside, and the impeller shaft of the pump wheel 18 is coaxially fixedly connected to the shaft 20. A hydraulic oil pipe 19 is fixed on the peripheral wall of the pump wheel 18 and connected, one end of the hydraulic oil pipe 19 is connected to the pump barrel 14, and the other end is connected to the hydraulic oil pool, and a control valve 35 is arranged at the end of the hydraulic oil pipe 19 connected to the pump barrel 14, and a cross bar 44 is fixed inside the frame 17. The cross bar 44 is arranged parallel to the shaft rod 20, and a plurality of worm gears 38 are connected to the cross bar 44 for fixed-axis rotation at equal intervals along the length direction. A plurality of worms 37 corresponding to the worm gears 38 are coaxially fixedly connected to the shaft rod 20, and the worms 37 are meshingly connected to the corresponding worm gears 38. A plurality of hammer rods 22 corresponding to the worm gears 38 are penetrated and slidably connected on the frame of the frame 17 close to the straightening platform 2, and the hammer rods 22 are arranged perpendicular to the straightening platform 2. A hammer head 23 is fixed at one end of the hammer rod 22 pointing to the straightening platform 2, and a slide 39 is fixed at the other end. A pin rod 40 is fixed at a position away from the center of the worm wheel 38, and the pin rod 40 is slidably connected to the corresponding slide 39.

[0023] Working principle and advantages of the invention: When the aircraft cantilever straightening device is in use, the working process is as follows: like Figures 1 to 5 As shown, the motor 3 is started by the controller, so that the motor 3 drives the screw rod 24 to rotate, so that the screw rod 24 drives the two screw sleeves 27 to approach each other through the external threads at both ends thereof, and then the screw sleeve 27 drives the two insert cylinders on the slide rod 1 26 to approach each other to a suitable position through the two brackets 2 30, and the two ends of the bent cantilever to be straightened are respectively inserted into the two insert cylinders 28 to keep the end of the cantilever limited during the straightening process to avoid dangerous accidents of slipping during the straightening process.

[0024] In the initial state, the control valve 35 is in a closed state, and the connecting shafts of the connecting rods 1 9 and 10 are away from the suspension rod 7. After the cantilever is installed, the hydraulic pump 4 is started by the controller, so that the hydraulic pump 4 transmits the hydraulic oil in the hydraulic oil pool to the pump barrel 14 through the hydraulic oil pipe 1 5, so that the piston plate 36 applies a thrust to the end of the lever 13 away from the connecting rod 3 11 through the push-pull rod 15 under the action of the hydraulic pressure, and then the lever 13 drives the connecting shafts of the connecting rods 1 9 and 10 through the connecting rod 3 11 to approach the suspension rod 7 and tend to a straight state, so that the push rod 16 applies pressure to the bent part of the cantilever through the pressure plate 1 41, the pressure sensor 2 42 and the pressure plate 2 43, so as to make the bent part of the cantilever approach the pad 31 and straighten it, and at the same time, the push rod 16 synchronously drives the frame 17 to approach the cantilever. During the straightening process, the cantilever tends to straighten. Its two ends are extended outward, and pressure is applied to the corresponding bracket 29 through the insert tube 28, so that the bracket 29 drives the sliding sleeve 25 and the sliding rod 2 33 to move away from the straightening platform 2, and then the sliding rod 2 33 applies pressure to the pressure sensor 1 34. When the pressure detection value of the pressure sensor 1 34 is greater than the set value, the controller controls the motor 3 to work, so that the motor 3 drives the screw 24 to rotate in the opposite direction, so that the screw 24 drives the two screw sleeves 27 away from each other through the external threads at both ends, and then the screw sleeve 27 drives the bracket 2 30 and the sliding cylinder 32 thereon to move synchronously, so that the pressure sensor 1 34 is away from the sliding rod 2 33, so that the pressure detection value of the pressure sensor 1 34 is less than the set value, and the insert tube 28 has space to move, and this reciprocating process is repeated many times, so as to adapt to the extension of the rear end of the cantilever straightening and ensure the straightening effect of the cantilever.

[0025] When the connecting rod 1 9 and the connecting rod 2 10 are in the same straight line and in contact with the suspension rod 7, the connecting rod 1 9, the connecting rod 2 10 and the top rod 16 are in the same straight line and form a locked state. At this time, the cantilever is in a straight state, but there is still bending stress inside the cantilever and it is in a stalemate stage. At this time, the control valve 35 is opened and the heating coil 21 is energized, so that the heating coil 21 heats the bending part of the cantilever. After the control valve 35 is opened, the hydraulic oil enters the pump wheel 18 through the hydraulic oil pipe 2 19, and then flows into the hydraulic oil pool to form a circulation. In this way, the high-temperature hydraulic oil inside the pump barrel 14 can be replaced during the above-mentioned stalemate stage, the internal temperature of the pump barrel 14 can be reduced, leakage problems caused by continuous high temperature for a long time can be avoided, and the service life of the pump barrel 14 can be increased. In addition, the hydraulic oil drives the internal impeller shaft to rotate during the process of passing through the pump wheel 18, so that the impeller shaft drives the shaft rod 20 to rotate. While the shaft rod 20 rotates, it drives the corresponding worm wheel 38 to rotate through the worm 37, so that the worm wheel 38 drives the slide through the pin 40. 39 and the hammer rod 22 move up and down, so that the hammer rod 22 drives the hammer head 23 to hammer the cantilever bending part, and cooperates with the heating treatment of the heating coil 21, so as to quickly and thoroughly release the internal stress of the cantilever bending part, so that the stalemate state is in a peaceful state. At this time, the pressure detection value of the pressure sensor 242 is less than the set value, thereby indicating that the cantilever straightening state is completed. At this time, the control valve and the heating coil 21 are closed, and then the hydraulic pump 4 is started to work in reverse, so that the hydraulic pump 4 pushes the pump barrel 14 through the hydraulic oil pipe 15. The hydraulic oil in the cylinder is extracted, so that the piston plate 36 applies a pulling force to the end of the lever 13 away from the connecting rod 3 11 through the push-pull rod 15, and then the lever 13 drives the connecting shafts of the connecting rods 1 9 and 10 away from the suspension rod 7 and resets through the connecting rod 3 11, so that the push rod 16 drives the pressure plate 1 41, the pressure sensor 2 42, the frame 17 and the pressure plate 2 43 away from the straightened cantilever, and then the motor 3 is started to work, so that the motor 3 drives the two inserts 28 to the appropriate position through the screw 24, and the cantilever can be removed.

[0026] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0027] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. An aircraft cantilever straightening device, comprising a straightening platform (2) fixed on a base (1), a pad (31) fixed on the upper surface of the straightening platform (2), characterized in that: Also includes: An adjustable end stop assembly is arranged on the straightening platform (2), and the adjustable end stop assembly comprises inserts (28) symmetrically arranged at both ends of the straightening platform (2); A gantry (6) is fixed on the straightening platform (2), and a self-locking pressurizing mechanism is arranged on the gantry (6), the self-locking pressurizing mechanism comprises a first pressing plate (41) and a second pressing plate (43), and a second pressure sensor (42) is fixedly connected between the first pressing plate (41) and the second pressing plate (43), and a vibration mechanism is arranged on the self-locking pressurizing mechanism, and the self-locking pressurizing mechanism and the vibration mechanism are connected via hydraulic transmission.

2. The aircraft cantilever straightening device according to claim 1, characterized in that: The adjustable end stop assembly further comprises a slide bar (26) slidably connected to the two ends of the straightening platform (2), and the two slide bars (26) are arranged in the same straight line and parallel to the plane of the straightening platform (2), a sliding sleeve (25) is sleeved on and slidably connected to the slide bar (26), and a bracket (29) is fixed on the outer peripheral wall of the sliding sleeve (25), and the two inserts (28) are symmetrically hinged on the two brackets (29) respectively.

3. The aircraft cantilever straightening device according to claim 2, characterized in that: The bottom surface of the straightening platform (2) is rotatably connected to a screw rod (24), and the screw rod (24) is arranged in parallel with a slide rod (26). Two sections of external threads with opposite rotation directions are provided on the peripheral wall of the screw rod (24) near the two ends. A motor (3) is fixed to the bottom of the straightening platform (2), and the motor (3) is transmission-connected to the screw rod (24).

4. The aircraft cantilever straightening device according to claim 3, characterized in that: The screw rod (24) is connected to two screw sleeves (27) via two sections of external threads, and a bracket 2 (30) is fixed on the peripheral wall of the screw sleeve (27); the end of the slide rod 1 (26) away from the straightening platform (2) is fixedly connected to the corresponding bracket 2 (30); a slide cylinder (32) is fixed to the bracket 2 (30), and a pressure sensor 1 (34) is fixed to the end of the slide cylinder (32) close to the bracket 2 (30); a slide rod 2 (33) is fixed to the bracket 1 (29), and the slide rod 2 (33) is inserted into the corresponding slide cylinder (32), and the end of the slide rod 2 (33) located in the slide cylinder (32) is in a buckling contact with the pressure sensor 1 (34).

5. The aircraft cantilever straightening device according to claim 2, characterized in that: The self-locking pressurizing mechanism further comprises a suspension rod (7) fixed at the middle of the gantry (6), the suspension rod (7) being arranged perpendicular to the straightening platform (2), and a guide sleeve (8) being fixed at one end of the suspension rod (7) pointing towards the straightening platform (2), a push rod (16) being inserted and slidably connected in the guide sleeve (8), and a pressure plate (41) being fixed at one end of the push rod (16) pointing towards the straightening platform (2).

6. The aircraft cantilever straightening device according to claim 5, characterized in that: The middle part of the gantry (6) is hinged to one end of the second connecting rod (10), and the end of the second connecting rod (10) away from the gantry (6) is hinged to one end of the first connecting rod (9), and the end of the first connecting rod (9) away from the second connecting rod (10) is hinged to one end of the top rod (16) pointing to the gantry (6), and the first connecting rod (9) and the second connecting rod (10) are parallel to and in contact with the suspension rod (7) when they are in a straight line. A support rod (12) is fixed, and an L-shaped lever (13) is provided on the support rod (12), the inflection point of the lever (13) is hinged on the support rod (12), one end of the lever (13) is hinged to one end of the connecting rod three (11), and the other end of the connecting rod three (11) is hinged to one end of the connecting rod one (9) away from the top rod (16), and the end of the lever (13) away from the connecting rod three (11) is hinged to the push-pull rod (15).

7. The aircraft cantilever straightening device according to claim 6, characterized in that: A pump barrel (14) is hinged on the gantry (6), and a piston plate (36) is slidably connected inside the pump barrel (14), and one end of the push-pull rod (15) away from the shifting rod (13) is fixedly connected to the piston plate (36), and a hydraulic pump (4) is fixed to the bottom of the straightening platform (2), and the hydraulic pump (4) is connected to a hydraulic oil pipe (5), and one end of the hydraulic oil pipe (5) is connected to the pump barrel (14), and the other end is connected to a hydraulic oil pool.

8. The aircraft cantilever straightening device according to claim 7, characterized in that: The rapping mechanism comprises a frame (17) fixed on a push rod (16), and a heating coil (21) for heating the cantilever is fixed on the frame (17); a fixed-axis rotatable connecting shaft (20) is provided on the frame (17), and the shaft (20) is arranged perpendicular to the push rod (16); a pump wheel (18) is fixed on the outer side of one end of the frame (17), and the impeller shaft of the pump wheel (18) is coaxially fixedly connected to the shaft (20); a hydraulic oil pipe (19) is fixed on the peripheral wall of the pump wheel (18) and is connected to the pump barrel (14), one end of the hydraulic oil pipe (19) is connected to the pump barrel (14), and the other end is connected to the hydraulic oil pool; and a control valve (35) is provided at the end of the hydraulic oil pipe (19) connected to the pump barrel (14).

9. The aircraft cantilever straightening device according to claim 8, characterized in that: A cross bar (44) is fixed inside the frame (17), and the cross bar (44) is arranged parallel to the shaft (20). A plurality of worm wheels (38) are rotatably connected to the cross bar (44) at equal intervals along the length direction. A plurality of worms (37) corresponding to the worm wheels (38) are coaxially fixedly connected to the shaft (20), and the worms (37) are meshingly connected to the corresponding worm wheels (38). A plurality of hammer rods (22) corresponding to the worm wheels (38) are penetrated and slidably connected to the frame of the frame (17) close to the straightening platform (2), and the hammer rods (22) are arranged perpendicular to the straightening platform (2). A hammer head (23) is fixed to one end of the hammer rod (22) pointing to the straightening platform (2), and a slide frame (39) is fixed to the other end. A pin rod (40) is fixed to a position away from the center of the worm wheel (38), and the pin rod (40) is slidably connected to the corresponding slide frame (39).

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