Surface spraying equipment and spraying method for aircraft parts

Abstract

The invention discloses surface spraying equipment for aircraft parts and a spraying method, and relates to the technical field of spraying of the aircraft parts, the surface spraying equipment comprises a suspension bracket, the suspension bracket is fixedly mounted at the top of the inner wall of a spraying chamber, a carrying plate is fixedly mounted at the bottom of the suspension bracket, and the surface spraying equipment further comprises an elastic telescopic rod, the fixed end of the elastic telescopic rod is fixedly mounted at the bottom of the carrying plate; the movable disc is fixedly installed at the movable end of the elastic telescopic rod, and the movable disc is used for sealing a port in one side of the part; the two rotating plates are rotationally mounted on the outer wall of the carrying plate; controllable pushing force is applied through the movable disc, the straight pipe part can be prevented from accidentally deflecting in the spraying process, then the angle of the straight pipe part is accurately adjusted through the rotating rod, and the area to be sprayed is made to be within the comfortable operation range of an operator all the time.

Description

Technical Field

[0001] The present invention relates to the technical field of aircraft component spraying, in particular to a surface spraying device and a spraying method for aircraft component. Background Art

[0002] Surface spraying equipment for aircraft parts is a surface treatment equipment designed specifically for high-precision, high-performance parts in the aerospace field. Its core function is to form a uniform and firm coating on the surface of parts through a specific process to meet the stringent requirements of aviation operations.

[0003] The patent with patent announcement number CN212077140U relates to a spraying mechanism for aircraft parts, which belongs to the field of aircraft parts processing equipment, including a spraying body and a spraying tube; a spraying tube is provided on the left side of the spraying body, and a power supply, a metal wire, a wire feeding roller, a conductive block, a conductive nozzle, and an air nozzle are provided inside the spraying body; the spraying mechanism for aircraft parts also includes a protective device and an adjustment device; the protective device is slidably matched with the spraying tube; the adjustment device is fixedly connected to the spraying tube, and the adjustment device is located inside the protective device. This patent reduces the contact between the jet airflow and the external environment through the protective device, thereby reducing the probability of chemical reaction between the jet airflow and the external environment and reducing the impact on the anti-corrosion performance; the radiation angle of the spray jet is adjusted by the adjustment device to reduce the coating coverage area acting on the convex surface per unit time, thereby avoiding uneven spraying.

[0004] The above patent has the function of adjusting the radiation angle to avoid uneven spraying. However, when arc spraying aircraft straight tube components, the suspended straight tube components are prone to deflection, which not only affects the spraying quality, but also causes trouble to the operator. Because during the spraying process, the operator needs to constantly adjust the posture to ensure that the spray gun and the straight tube components remain horizontal for spraying, which increases the difficulty of spraying. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the present invention provides a surface spraying equipment and a spraying method for aircraft parts, which solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a surface spraying equipment for aircraft parts, including a hanging bracket, the hanging bracket is fixedly mounted on the top of the inner wall of the spraying chamber, and the bottom of the hanging bracket is fixedly mounted with a carrying plate, and also includes: an elastic telescopic rod, the fixed end of the elastic telescopic rod is fixedly mounted on the bottom of the carrying plate; a movable disk, the movable disk is fixedly mounted on the movable end of the elastic telescopic rod, and the movable disk pushes the movable disk, and the movable disk drives the movable end of the elastic telescopic rod to contract, and the movable disk is used to seal one side port of the part; two rotating plates, the two rotating plates are rotatably mounted on the outer wall of the carrying plate; a round rod, the round rod is rotated to penetrate the surface of the rotating plate close to the side of the movable disk, the round rod is used to suspend the part, and the straight pipe part to be sprayed is put on the round rod so that the round rod is tightly fitted with the inner wall of the straight pipe part; a fixed disk, the fixed disk is fixedly mounted on the circumferential surface of the round rod, and the fixed disk is used to seal one side port of the part.

[0007] According to the above technical solution, a circular groove is opened on one side of the round rod close to the elastic telescopic rod, and the movable end of the elastic telescopic rod is in contact with the inner wall of the circular groove. The movable end of the elastic telescopic rod is out of contact with the circular groove, thereby releasing the restriction on the round rod.

[0008] According to the above technical solution, the inner wall of the movable disk fits with the circumferential surface of the round rod, and a plurality of friction plates are provided on the circumferential surface of the round rod. The friction plates are used to enhance the static friction between the round rod and the components. The friction plates provided on the round rod can increase the friction between the round rod and the straight tube components, ensuring that the round rod can accurately drive the straight tube components to rotate synchronously.

[0009] According to the above technical solution, a rotating rod is fixedly installed on the side of the round rod away from the elastic telescopic rod, and a gripping rod is fixedly installed between the two rotating plates. When the gripping rod is rotated upward, the gripping rod drives the rotating plate to rotate upward, and the rotating plate drives the round rod and the fixed plate to move as a whole.

[0010] The cam is fixedly mounted on the frame, and the cam is fixedly mounted on the frame, and the cam is fixedly mounted on the frame, and the cam is fixedly mounted on the frame, and the cam is fixedly mounted on the frame,

[0011] According to the above technical solution, a circular hole is opened on the side of the inner frame close to the pull rod, the pull rod contacts the inner wall of the circular hole, the roller contacts the outer wall of the connecting plate, the connecting plate pushes the roller toward the fixed frame, and the roller drives the movable block and the pull rod to move synchronously.

[0012] According to the above technical solution, the protective device includes an external frame, a hollow plate, a convex plate, a spring sheet, a rectangular plate, a short rod, a resist plate and a contact plate. The deformed spring sheet pushes the convex plate to move, prompting the convex plate to drive the rectangular plate to move in the direction away from the hollow plate. The external frame is fixedly mounted on a side of the fixed frame away from the inner frame, the hollow plate is fixedly mounted on the inner wall of the external frame, the convex plate is slidably mounted on the inner wall of the hollow plate, the spring sheet is arranged between the convex plate and the external frame, the rectangular plate is fixedly mounted on the outer wall of the convex plate, the short rod is fixedly mounted on a side of the rectangular plate close to the hollow plate, the resist plate is fixedly mounted on the circumferential surface of the short rod, the contact plate is fixedly mounted on a side of the hollow plate close to the resist plate, and a rubber sheet is provided on a side of the convex plate close to the connecting plate, the rubber sheet contacts the connecting plate, and when the connecting plate moves in the direction away from the convex plate, the pressure exerted on the convex plate gradually decreases.

[0013] According to the above technical solution, the abutment plate itself is elastic, and two protrusions are provided on one side of the contact plate close to the abutment plate. The abutment plate collides with the protrusions to generate vibration, and then the abutment plate bends and deforms and separates from the protrusions.

[0014] A method for spraying a surface of an aircraft component using a spraying device, comprising the following steps: Step 1: First push the movable plate to disengage the movable end of the elastic telescopic rod from the circular groove, then rotate the rotating plate to the predetermined position, and then put the straight tube component to be sprayed on the round rod to make the round rod fit tightly with the inner wall of the straight tube component; Step 2: Rotate the rotating plate. When the rotating plate returns to its initial position, release the movable plate. The movable end of the elastic telescopic rod automatically returns to its original position and contacts the circular groove. At the same time, the movable plate applies a controllable thrust to one side port of the straight tube component, so that both sides of the straight tube component are stably blocked. Step 3: Perform the spraying operation. The operator holds the spray gun according to the regulations and performs arc spraying on the straight pipe parts in the suspended state; Step 4: After the spraying is completed, cool the straight tube components directly. After the straight tube components are cooled, remove the straight tube components to complete the recycling work.

[0015] The present invention provides a surface spraying equipment for aircraft parts. It has the following beneficial effects: (1) The surface spraying equipment for aircraft parts uses a movable disk to apply controllable thrust to the straight tube parts, so that the ports on both sides of the straight tube parts are stably blocked. By effectively covering the ports on both sides of the straight tube parts during the suspension process, the coating material is prevented from being sprayed onto the inner wall of the parts during arc spraying, thereby reducing the difficulty of subsequent cleaning of the inner wall. At the same time, the rotating rod is rotated, and the round rod is rotated synchronously to adjust the angle of the straight tube parts. The controllable thrust is applied by the movable disk to avoid accidental deflection of the straight tube parts during spraying. The rotating rod is then used to accurately adjust the angle of the straight tube parts so that the area to be sprayed is always within the operator's comfortable operating range, thereby improving the spraying quality.

[0016] (2) The surface spraying equipment for the aircraft parts has a movable block that blocks the rotation of the connecting plate to keep it at a specified angle. By limiting the straight tube parts at a specified height for suspension cooling, the parts can be prevented from contacting and colliding with each other during the cooling process, preventing the newly sprayed coating from being scratched or damaged, and ensuring the integrity of the coating. At the same time, after the straight tube parts are cooled, the operator directly takes them out to complete the recycling work. The recycling process is simple and fast, which can reduce the risk of accidental damage to the parts during the removal process and ensure the stability of the quality of the aircraft parts after spraying.

[0017] (3) The surface spraying equipment for aircraft parts generates vibration when the bumps on the plate collide with the contact plate. The vibration ensures that the roller and the movable block can accurately disengage without getting stuck during the process, thus ensuring the continuity and accuracy of the suspension cooling operation. At the same time, the rubber sheet can alleviate the impact force generated during contact by virtue of its own elasticity. The dual buffering effect of the rubber sheet and the shrapnel greatly reduces the impact force when the connecting plate is reset, and the stable motion state can provide reliable guarantee for high-quality spraying. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the mounting plate of the present invention; Figure 3 This is a schematic diagram of the position structure of the elastic telescopic rod and the circular groove of the present invention; Figure 4 Schematic diagram of the friction plate structure of the present invention; Figure 5 This is a schematic diagram of the position structure of the external frame of the present invention; Figure 6 This is a schematic diagram of the internal structure of the fixing frame of the present invention; Figure 7 This is a schematic diagram of the arc chute structure of the present invention; Figure 8 Schematic diagram of the spring structure of the present invention; Figure 9 This is a schematic diagram of the internal structure of the external frame of the present invention; Figure 10 It is a schematic diagram of the shrapnel structure of the present invention.

[0019] In the figure: 1. Suspension bracket; 2. Carrying plate; 3. Elastic telescopic rod; 4. Movable disk; 5. Rotating plate; 6. Round rod; 7. Fixed disk; 8. Rotating rod; 9. Grip rod; 21. Fixed frame; 22. Sliding rod; 23. Connecting plate; 24. Inner frame; 25. Movable block; 26. Spring; 27. Roller; 28. Pull rod; 31. External frame; 32. Hollow plate; 33. Convex plate; 34. Spring piece; 35. Rectangular plate; 36. Short rod; 37. Abutment plate; 38. Contact plate. DETAILED DESCRIPTION

[0020] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0021] See also Figures 1-10One embodiment of the present invention is: a surface spraying equipment for aircraft parts, including a hanging bracket 1, the hanging bracket 1 is fixedly mounted on the top of the inner wall of the spraying chamber, and a carrying plate 2 is fixedly mounted on the bottom of the hanging bracket 1, and also includes: an elastic telescopic rod 3, the fixed end of the elastic telescopic rod 3 is fixedly mounted on the bottom of the carrying plate 2; a movable disk 4, the movable disk 4 is fixedly mounted on the movable end of the elastic telescopic rod 3, and the movable disk 4 is used to seal one side port of the part; two rotating plates 5, the two rotating plates 5 are rotatably mounted on the outer wall of the carrying plate 2; a round rod 6, the round rod 6 is rotatably penetrated through the surface of the rotating plate 5 near the side of the movable disk 4, and the round rod 6 is used to suspend the part; a fixed disk 7, the fixed disk 7 is fixedly mounted on the circumferential surface of the round rod 6, and the fixed disk 7 is used to seal one side port of the part, and effectively shields the two side ports of the straight tube part during the suspension process to prevent the coating material from being sprayed onto the inner wall of the part during arc spraying.

[0022] A circular groove is provided on one side of the round rod 6 close to the elastic telescopic rod 3 , and the movable end of the elastic telescopic rod 3 fits in contact with the inner wall of the circular groove. The elasticity of the elastic telescopic rod 3 itself can prevent accidental falling off.

[0023] The inner wall of the movable disk 4 fits with the circumferential surface of the round rod 6. A plurality of friction plates are provided on the circumferential surface of the round rod 6. The friction plates are used to enhance the static friction between the round rod 6 and the components. By providing the friction plates, the rotating rod 8 can accurately adjust the angle of the straight pipe components, so that the area to be sprayed is always within the comfortable working range of the operator.

[0024] A rotating rod 8 is fixedly installed on the side of the round rod 6 away from the elastic telescopic rod 3, and a grip rod 9 is fixedly installed between the two rotating plates 5. By adding the rotating rod 8, the operator can flexibly adjust the angle of the round rod 6, thereby accurately adjusting the angle of the straight tube component.

[0025] A method for spraying a surface of an aircraft component using a spraying device, comprising the following steps: Step 1: First push the movable plate 4 to disengage the movable end of the elastic telescopic rod 3 from the circular groove, then rotate the rotating plate 5 to the predetermined position, and then put the straight tube component to be sprayed on the round rod 6, so that the round rod 6 is tightly fitted with the inner wall of the straight tube component; Step 2: Rotate the rotating plate 5. When the rotating plate 5 returns to its initial position, release the movable plate 4. The movable end of the elastic telescopic rod 3 automatically returns to its original position and contacts the circular groove. At the same time, the movable plate 4 applies a controllable thrust to one side port of the straight tube component, so that both sides of the straight tube component are stably blocked. Step 3: Perform the spraying operation. The operator holds the spray gun according to the regulations and performs arc spraying on the straight pipe parts in the suspended state; Step 4: After the spraying is completed, cool the straight tube components directly. After the straight tube components are cooled, remove the straight tube components to complete the recycling work.

[0026] When the cam 5 is in the working state, the movable plate 4 is pushed away from the round rod 6, and the movable plate 4 drives the movable end of the elastic telescopic rod 3 to retract. During the retraction process, the movable end of the elastic telescopic rod 3 is out of contact with the circular groove; then the gripping rod 9 is rotated upward, and the gripping rod 9 drives the rotating plate 5 to rotate upward, and the rotating plate 5 drives the round rod 6 and the fixed plate 7 to move as a whole; when the rotating plate 5 rotates to the predetermined position, the straight tube component to be sprayed is sleeved on the round rod 6, so that the round rod 6 is closely fitted with the inner wall of the straight tube component, and at the same time, one side port of the straight tube component is fitted with the fixed plate 7; the gripping rod 9 is rotated to reset it to its initial position, and then the movable plate 4 is released, so that the movable end of the elastic telescopic rod 3 is automatically reset and contacts the circular groove, and at the same time, the reset of the movable end drives the movable plate 4 to move synchronously, and the movable plate 4 moves to contact the other side port of the straight tube component and applies a controllable thrust so that the two side ports of the straight tube component are stably blocked. By effectively blocking the two side ports of the straight tube component during the suspension process, it is prevented that the coating material is sprayed onto the inner wall of the component during arc spraying, thereby reducing the difficulty of subsequent cleaning of the inner wall; When performing the spraying operation, the operator holds the spray gun according to the regulations and performs arc spraying on the straight pipe parts in a suspended state. During the spraying process, the controllable thrust applied by the movable disk 4 can prevent the straight pipe parts from deflecting during spraying; when the angle of the straight pipe parts needs to be adjusted, the operator first pushes the movable disk 4 to release the thrust applied to the straight pipe parts, and then rotates the rotating rod 8. The rotating rod 8 drives the round rod 6 and the fixed disk 7 to rotate as a whole, and the friction plate provided on the round rod 6 can increase the friction between the round rod 6 and the straight pipe parts, ensuring that the round rod 6 can accurately drive the straight pipe parts to rotate synchronously; after adjusting to the preset angle, the operator releases the movable disk 4 to reset it to the initial position, and re-applies a controllable thrust to the straight pipe parts to stabilize the straight pipe parts. After that, the operator continues the spraying operation. By applying a controllable thrust by the movable disk 4, the straight pipe parts can be prevented from accidentally deflecting during spraying, and the rotating rod 8 is used to accurately adjust the angle of the straight pipe parts, so that the area to be sprayed is always within the operator's comfortable operating range, thereby improving the spraying quality.

[0027] See also Figures 1-10On the basis of the above embodiment, in another embodiment of the present invention, a self-locking device for locking the position of the rotating plate 5 is provided on the carrying plate 2, and a protective device for improving the safety of use is provided on the self-locking device; the self-locking device includes a fixed frame 21, a slide rod 22, a connecting plate 23, an inner frame 24, a movable block 25, a spring 26, a roller 27 and a pull rod 28, the fixed frame 21 is fixedly mounted on the inner wall of the carrying plate 2, the inner wall of the fixed frame 21 is provided with an arc-shaped slide groove, and the slide rod 22 is slidably mounted on the arc-shaped slide groove of the fixed frame 21 The connecting plate 23 is fixedly mounted on the circumferential surface of the slide rod 22, the connecting plate 23 is fixedly connected to the rotating plate 5, the inner frame 24 is fixedly mounted on the inner wall of the fixed frame 21, the movable block 25 is slidably mounted on the inner wall of the inner frame 24, a spring 26 is arranged between the movable block 25 and the inner frame 24, the roller 27 rotates and passes through the surface of the movable block 25, and the pull rod 28 is fixedly mounted on the side of the movable block 25 close to the spring 26. By limiting the straight tube components at a specified height for suspended cooling, the components can be prevented from contacting and colliding with each other during the cooling process.

[0028] A circular hole is opened on one side of the inner frame 24 close to the pull rod 28. The pull rod 28 contacts the inner wall of the circular hole, and the roller 27 contacts the outer wall of the connecting plate 23. The recycling process is simple and fast, which can reduce the risk of accidental damage to parts during the removal process and ensure the stable quality of the aircraft parts after spraying.

[0029] The protective device includes an external frame 31, a hollow plate 32, a convex plate 33, a spring piece 34, a rectangular plate 35, a short rod 36, a stop plate 37 and a contact plate 38. The external frame 31 is fixedly mounted on the side of the fixed frame 21 away from the inner frame 24, the hollow plate 32 is fixedly mounted on the inner wall of the external frame 31, the convex plate 33 is slidably mounted on the inner wall of the hollow plate 32, the spring piece 34 is arranged between the convex plate 33 and the external frame 31, the rectangular plate 35 is fixedly mounted on the outer wall of the convex plate 33, the short rod 36 is fixedly mounted on the side of the rectangular plate 35 close to the hollow plate 32, the stop plate 37 is fixedly mounted on the circumferential surface of the short rod 36, and the contact plate 38 is fixedly mounted on the side of the hollow plate 32 close to the stop plate 37. A rubber sheet is provided on the side of the convex plate 33 close to the connecting plate 23, and the rubber sheet contacts the connecting plate 23. Through the dual buffering effect of the rubber sheet and the spring piece 34, the impact force when the connecting plate 23 is reset is greatly reduced, and the stable motion state can provide reliable guarantee for high-quality spraying.

[0030] The abutment plate 37 itself is elastic, and two protrusions are provided on the side of the contact plate 38 close to the abutment plate 37. Through vibration, it is ensured that the roller 27 and the movable block 25 can be accurately disengaged without getting stuck during the process, thereby ensuring the continuity and accuracy of the suspension cooling operation.

[0031] When the present embodiment is working, after the spraying is completed, the operator pushes the movable disk 4 to release the contact between the movable end of the elastic telescopic rod 3 and the circular groove, and then rotates the rotating plate 5 upward. The rotating plate 5 drives the straight tube parts to rotate synchronously through the circular rod 6. At the same time, the rotating plate 5 also drives the connecting plate 23 to rotate together. The connecting plate 23 drives the slide bar 22 to slide along the arc-shaped slide groove. At the same time, the connecting plate 23 pushes the roller 27 toward the fixed frame 21. The roller 27 drives the movable block 25 and the pull rod 28 to move synchronously. During this process, the movable block 25 compresses the spring 26, causing it to undergo elastic deformation until the connecting plate 23 rotates to a specified angle and disengages from the roller 27. At this time, the spring 26 restores and pushes the movable block 25 and the pull rod 28 to reset. After the movable block 25 is reset, it can prevent the connecting plate 23 from rotating, thereby limiting the rotating plate 5 and keeping it at a specified angle. By limiting the straight pipe components at a specified height for hanging cooling, it can avoid mutual contact and collision between components during the cooling process, prevent the newly sprayed coating from being scratched or damaged, and ensure the integrity of the coating. After the straight pipe components are cooled, the operator can directly take them out to complete the recycling work; when the spraying operation is carried out again, the operator puts a new straight pipe component on the round rod 6; Then, the pull rod 28 is pulled away from the inner frame 24, and the pull rod 28 drives the movable block 25 to move synchronously. The movable block 25 compresses the spring 26 during the movement and releases the obstruction of the connecting plate 23, so that the rotating plate 5 can rotate back to the initial position; when the connecting plate 23 is completely reset, the pull rod 28 is released, and the spring 26 pushes the movable block 25 to reset, and the movable block 25 drives the roller 27 to reset synchronously, preparing for the next suspension cooling. The recycling process is simple and fast, which can reduce the risk of accidental damage to parts during the removal process and ensure the stable quality of the sprayed aircraft parts. When the connecting plate 23 moves in the direction away from the convex plate 33, the pressure exerted on the convex plate 33 gradually decreases. At this time, the deformed spring piece 34 pushes the convex plate 33 to move, prompting the convex plate 33 to drive the rectangular plate 35 to move in the direction away from the hollow plate 32. During the movement, the rectangular plate 35 drives the short rod 36 and the stop plate 37 to move synchronously. During the movement, the stop plate 37 collides with the protrusion on the contact plate 38 to generate vibration. Then, the stop plate 37 bends and deforms and separates from the protrusion. The generated vibration acts on the fixed frame 21, so that the roller 27 and the movable block 25 can be smoothly disengaged from each other, preventing them from getting stuck during the sliding process. When the spring piece 34 completes the reset, the convex plate 33 stays in the specified position. The vibration ensures that the roller 27 and the movable block 25 can be accurately disengaged from each other without getting stuck during the sliding process, thereby ensuring the consistency and accuracy of the suspension cooling operation. When the connecting plate 23 is reset, it contacts the rubber sheet of the convex plate 33 during the rotation process. The rubber sheet can alleviate the impact force generated by the contact by virtue of its own elasticity. Subsequently, the connecting plate 23 pushes the convex plate 33 to move toward the hollow plate 32. The convex plate 33 squeezes the spring piece 34 during the movement. The deformed spring piece 34 exerts elastic resistance on the convex plate 33, thereby slowing down the movement speed of the convex plate 33, thereby reducing the speed of the connecting plate 23 when it is reset; at the same time, the convex plate 33 drives the rectangular plate 35 to move synchronously, and the rectangular plate 35 drives the short rod 36 and the support plate 37 to move synchronously. The support plate 37 collides with the protrusion on the contact plate 38 again to generate vibration. Through the dual buffering effect of the rubber sheet and the spring piece 34, the impact force when the connecting plate 23 is reset is greatly reduced, and the stable movement state can provide reliable guarantee for high-quality spraying.

[0032] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A surface spraying device for aircraft parts, comprising a suspension bracket (1), characterized in that: The suspension bracket (1) is fixedly mounted on the top of the inner wall of the spraying chamber, and a mounting plate (2) is fixedly mounted on the bottom of the suspension bracket (1), and further comprises: An elastic telescopic rod (3), wherein the fixed end of the elastic telescopic rod (3) is fixedly mounted on the bottom of the carrying plate (2); A movable disk (4), the movable disk (4) being fixedly mounted on the movable end of the elastic telescopic rod (3), the movable disk (4) being used to seal a side port of a component; Two rotating plates (5), the two rotating plates (5) being rotatably mounted on the outer wall of the carrying plate (2); A round rod (6), the round rod (6) rotatably passing through the surface of the rotating plate (5) on the side close to the movable disk (4), and the round rod (6) is used to suspend parts; A fixed disk (7) is fixedly mounted on the circumferential surface of the round rod (6), and the fixed disk (7) is used to seal a side port of a component.

2. The surface spraying equipment for aircraft parts according to claim 1, characterized in that: A circular groove is provided on one side of the round rod (6) close to the elastic telescopic rod (3), and the movable end of the elastic telescopic rod (3) is in contact with the inner wall of the circular groove.

3. The surface spraying equipment for aircraft parts according to claim 2, characterized in that: The inner wall of the movable disk (4) is in contact with the circumferential surface of the round rod (6), and a plurality of friction plates are provided on the circumferential surface of the round rod (6). The friction plates are used to enhance the static friction between the round rod (6) and the components.

4. The surface spraying equipment for aircraft parts according to claim 3, characterized in that: A rotating rod (8) is fixedly mounted on a side of the round rod (6) away from the elastic telescopic rod (3), and a gripping rod (9) is fixedly mounted between the two rotating plates (5); Wherein, a self-locking device for locking the position of the rotating plate (5) is provided on the mounting plate (2), and a protective device for improving the safety of use is provided on the self-locking device.

5. The surface spraying equipment for aircraft parts according to claim 4, characterized in that: The self-locking device comprises a fixed frame (21), a slide rod (22), a connecting plate (23), an inner frame (24), a movable block (25), a spring (26), a roller (27) and a pull rod (28), wherein the fixed frame (21) is fixedly mounted on the inner wall of the mounting plate (2), an arc-shaped sliding groove is provided on the inner wall of the fixed frame (21), the slide rod (22) is slidably mounted on the arc-shaped sliding groove of the fixed frame (21), and the connecting plate (23) is fixedly mounted on the inner wall of the slide rod (22). The connecting plate (23) is fixedly connected to the rotating plate (5), the inner frame (24) is fixedly mounted on the inner wall of the fixed frame (21), the movable block (25) is slidably mounted on the inner wall of the inner frame (24), a spring (26) is provided between the movable block (25) and the inner frame (24), the roller (27) rotates and passes through the surface of the movable block (25), and the pull rod (28) is fixedly mounted on a side of the movable block (25) close to the spring (26).

6. The surface spraying equipment for aircraft parts according to claim 5, characterized in that: A circular hole is provided on one side of the inner frame (24) close to the pull rod (28), the pull rod (28) contacts the inner wall of the circular hole, and the roller (27) contacts the outer wall of the connecting plate (23).

7. The surface spraying equipment for aircraft parts according to claim 6, characterized in that: The protective device comprises an external frame (31), a hollow plate (32), a convex plate (33), a spring piece (34), a rectangular plate (35), a short rod (36), a stop plate (37) and a contact plate (38), wherein the external frame (31) is fixedly mounted on a side of the fixed frame (21) away from the inner frame (24), the hollow plate (32) is fixedly mounted on the inner wall of the external frame (31), the convex plate (33) is slidably mounted on the inner wall of the hollow plate (32), and the spring piece (34) is arranged on the convex plate (33). ) and the external frame (31), the rectangular plate (35) is fixedly mounted on the outer wall of the convex plate (33), the short rod (36) is fixedly mounted on a side of the rectangular plate (35) close to the hollow plate (32), the abutment plate (37) is fixedly mounted on the circumferential surface of the short rod (36), the contact plate (38) is fixedly mounted on a side of the hollow plate (32) close to the abutment plate (37), and a rubber sheet is provided on a side of the convex plate (33) close to the connecting plate (23), and the rubber sheet is in contact with the connecting plate (23).

8. The surface spraying equipment for aircraft parts according to claim 7, characterized in that: The abutment plate (37) itself has elasticity, and two protrusions are provided on a side of the contact plate (38) close to the abutment plate (37).

9. A method for spraying a surface of an aircraft component using a spraying device, comprising using the spraying device according to claim 8, wherein: The following steps are involved: Step 1: first push the movable disk (4) to disengage the movable end of the elastic telescopic rod (3) from the circular groove, then rotate the rotating plate (5) to a predetermined position, and then put the straight tube component to be sprayed on the round rod (6) so that the round rod (6) is tightly fitted with the inner wall of the straight tube component; Step 2: Rotate the rotating plate (5). When the rotating plate (5) is reset to the initial position, release the movable plate (4). The movable end of the elastic telescopic rod (3) automatically resets and contacts the circular groove. At the same time, the movable plate (4) applies a controllable thrust to one side port of the straight pipe component, so that both side ports of the straight pipe component are stably blocked. Step 3: Perform the spraying operation. The operator holds the spray gun according to the regulations and performs arc spraying on the straight pipe parts in the suspended state; Step 4: After the spraying is completed, cool the straight tube components directly. After the straight tube components are cooled, remove the straight tube components to complete the recycling work.

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