Positioning device for airplane pipeline welding

Abstract

The invention relates to the technical field of welding, in particular to a positioning device for aircraft pipeline welding, which comprises a clamp component clamped on the outer wall of a pipeline in a clamping manner; the rotating part comprises a main frame fixed to the clamp part, a gear set is arranged on the main frame, the outer wall of the gear set is connected with a semicircular gear ring in a meshed mode, and the gear ring is installed on the main plate and drives the main plate to rotate around the pipeline circumferentially; the power part comprises a motor and a switching part, and the switching part sequentially transmits power of the motor to the clamp part and the rotating part; and the welding part is mounted on the back surface of the main plate and circumferentially rotates together with the main plate to realize circumferential welding. The pipeline is accurately positioned through the clamping jaw, and the friction ring, the gear disc and other components are driven by the motor to work cooperatively, so that the welding head is accurately aligned with a welding seam and performs circumferential rotation welding. Compared with manual welding, welding deviation caused by factors such as hand shaking and space limitation is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of welding, in particular to a positioning device for welding of aircraft pipelines. Background Art

[0002] When inspecting and repairing aircraft pipes, it is impossible to dismantle all the pipes for mechanical welding because the pipes are long and the installation space is limited. Therefore, maintenance personnel can usually only weld them manually in the existing space. Although this method can meet maintenance needs to a certain extent, the welding effect is poor due to space and equipment limitations.

[0003] Especially when manual welding is performed in a narrow space, there are the following major problems: First, the welding accuracy is difficult to ensure. Due to space limitations, the operation of the welder is restricted, and it is difficult to accurately control the position and angle of the circumferential welding, resulting in unstable welding quality. Secondly, the welding standards are inconsistent, and the technical levels and experiences of different welders are different. There are differences in welding results, and it is difficult to ensure the consistency of welding. In addition, manual welding is inefficient, labor-intensive, and there are safety hazards in operating in a narrow space. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is that there are many problems when performing manual circumferential welding in a small space. Space restrictions restrict the operation of welders, making it difficult to accurately control the welding position and angle, resulting in unstable welding quality. The differences in technical levels and experience of different welders result in inconsistent welding results. In addition, manual welding is inefficient, labor-intensive, and there are safety hazards in operating in a small space.

[0005] The above technical problem is solved by the following technical solution: The present invention provides a positioning device for welding aircraft pipelines, including a clamp component, which is clamped on the outer wall of the pipeline in a clamping manner; The rotating component comprises a main frame fixed to the clamp component, the main frame is provided with a gear set, the outer wall of the gear set is meshedly connected with a semicircular gear ring, the gear ring is installed on the main board, and drives the main board to rotate around the pipe; A power component, including a motor and a switching component, wherein the switching component sequentially transmits the motor power to the clamp component and the rotating component; The welding component is installed on the back side of the main board and performs circumferential rotation together with the main board to realize circumferential welding.

[0006] In a preferred embodiment of the positioning device for aircraft pipeline welding of the present invention: the power component also includes a box body, a screw rod of the clamp component is rotatably arranged on the bottom surface of the box body, a rotating rod of the rotating component is arranged on the side surface of the box body, and the motor is respectively connected to the screw rod and the rotating rod through a switching member.

[0007] The switching member includes a friction ring, the lower surface of which is in contact with a gear plate sleeved on the screw, a spring pin is provided on the side of the gear plate, one end of which is inserted into the tooth gap of the outer wall of the gear plate, and the motor output tube is inserted into the annular groove at the upper end of the friction ring to drive the friction ring to rotate.

[0008] An output bevel gear is sleeved on the outer wall of the output cylinder, and the output bevel gear is meshed with an input bevel gear provided at one end of the rotating rod. An oblique groove is opened on the upper surface of the spring pin, and a straight rod is provided above the oblique groove. The upper end of the straight rod is located on the lower surface of the output bevel gear, which is used to push the output bevel gear to mesh with the input bevel gear.

[0009] The inner side wall of the hole of the output bevel gear is provided with two symmetrical arc grooves, and the outer wall of the output cylinder is provided with a protrusion, and the protrusion slides along the arc groove.

[0010] A spring sleeve rod is arranged between the output bevel gear and the friction ring, and the spring sleeve rod is locked after being retracted to a certain position. An extrusion rod is arranged on the side of the box body, and the extrusion rod unlocks the spring sleeve rod.

[0011] The clamp component includes a main body installed below the main frame, in which two symmetrical multi-link clamps are arranged, and a cross plate is arranged at the upper ends of the two multi-link clamps. The screw is screwed to the cross plate, and the lower end of the screw is connected to the main body through a bearing.

[0012] The main frame and the main board are connected by a keyway, and the slot on the main board is set to be semicircular, and the cross section of the convex key on the main frame is set to be T-shaped.

[0013] The gear set includes a first pinion connected to the rotating rod, two sets of intermediate large gears are symmetrically arranged about the first pinion, a second pinion is arranged on the other side of each intermediate large gear, and the first pinion and the second pinion are both meshed with the gear ring.

[0014] The welding component comprises a welding head installed on the back of the mainboard, and the welding head is connected to a welding machine through a pipeline.

[0015] The beneficial effect of the present invention is that the device accurately positions the pipeline through the clamping claw, and the motor drives the friction ring, gear plate and other components to work together, so that the welding head is accurately aligned with the weld and performs circular rotation welding. Compared with manual welding, it avoids welding deviations caused by factors such as hand shaking and space limitations, significantly improves welding accuracy and quality, ensures that the weld is uniform and firm, and meets the high requirements of aircraft pipelines for welding quality.

[0016] The device uses a motor drive and gear transmission system. From pipe clamping to the circumferential rotation welding of the welding head, the entire process does not require manual intervention, realizing automatic welding. This not only reduces manual operation steps and labor intensity, but also greatly shortens welding time and improves welding efficiency. It is especially suitable for scenes such as aircraft pipes that require frequent maintenance and welding, and can effectively improve the overall efficiency of maintenance work.

[0017] The device is compact and small in size, and can be flexibly operated in the narrow space where aircraft pipes are located. The structural design of the clamp and welding head enables it to adapt to pipes of different sizes and can still accurately complete welding tasks under limited space. This flexibility makes the device have a wide range of application prospects in aircraft pipeline maintenance, solving the problem that traditional welding equipment is difficult to operate in a small space. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments of the present invention are briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention. Among them: Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ; Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ; Figure 3 The overall structure of the present invention is shown in FIG. Figure 3 ; Figure 4 It is a schematic diagram of the internal structure of the power component of the present invention; Figure 5 for Figure 4 A schematic diagram of the structure enlargement in the middle; Figure 6 It is a schematic diagram of the connection structure between the output bevel gear and the output cylinder.

[0019] In the figure: 1. Clamp components; 11. Screw rod; 12. Main body; 13. Multi-link clamp; 14. Cross plate; 2. Rotating component; 21. Main frame; 22. Gear set; 221. First pinion; 222. Transfer gear; 223. Second pinion; 23. Gear ring; 24. Main board; 25. Rotating rod; 3. Power components; 31. Motor; 311. Output cylinder; 3111. Protrusion; 312. Output bevel gear; 3121. Arc groove; 313. Input bevel gear; 32. Switching member; 321. Friction ring; 3211. Annular groove; 322. Gear plate; 323. Spring pin; 3231. Oblique groove; 324. Straight rod; 325. Spring sleeve rod; 326. Extrusion rod; 33. Box body; 4. Welding parts; 41. Welding heads; 42. Pipes. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with specific implementation methods and drawings.

[0021] The terms used in the present invention are those general terms currently widely used in the art in consideration of the functions of the present invention, but these terms may vary according to the intention of a person of ordinary skill in the art, precedents, or new technologies in the art. In addition, specific terms may be selected by the applicant, and in this case, their detailed meanings will be described in the detailed description of the present invention. Therefore, the terms used in the specification should not be understood as simple names, but rather as a general description based on the meaning of the terms and the present invention.

[0022] Reference Figure 1-Figure 6 The present embodiment provides a positioning device for welding an aircraft pipeline, comprising a clamp component 1, which is clamped on the outer wall of the pipeline in the form of a clamp; a rotating component 2, which comprises a main frame 21 fixed to the clamp component 1, and a gear set 22 is arranged on the main frame 21, and a semicircular gear ring 23 is meshed and connected to the outer wall of the gear set 22, and the gear ring 23 is installed on the main board 24, driving the main board 24 to rotate around the pipeline 42; a power component 3, which comprises a motor 31 and a switching component 32, and the switching component 32 transmits the power of the motor 31 to the clamp component 1 and the rotating component 2 in sequence; a welding component 4, which is installed on the back of the main board 24, and rotates in a circle with the main board 24 to achieve circle welding.

[0023] In this embodiment, the clamp component 1 is the basis of the entire device, and is fixed to the outer wall of the pipe 42 by means of a clamp. This design can ensure that the device is stably attached to the pipe 42 during the welding process and will not loosen due to the heat or vibration generated during welding. Furthermore, the clamp structure of the clamp component 1 can be adjusted according to the size of the pipe 42 to adapt to pipes 42 of different diameters, thereby ensuring the firmness and reliability of the clamping.

[0024] The rotating component 2 includes a main frame 21 fixed to the clamp component 1, and a gear set 22 is arranged on the main frame 21. The outer wall of the gear set 22 is meshed and connected with a semicircular gear ring 23, and the gear ring 23 is installed on the main board 24. When the gear set 22 rotates, the gear ring 23 drives the main board 24 to rotate around the pipe 42. This design enables the welding head 41 to perform circumferential welding along the outer wall of the pipe 42, ensuring the comprehensiveness and uniformity of the welding. The design of the rotating component 2 cleverly utilizes the principle of gear transmission to achieve the precise rotation of the welding head 41.

[0025] The power component 3 includes a motor 31 and a switching component 32. The motor 31 is the power source of the entire device, and the switching component 32 is responsible for transmitting the power of the motor 31 to the clamp component 1 and the rotating component 2 in sequence. When the device needs to clamp the pipe 42, the switching component 32 transmits the power of the motor 31 to the clamp component 1, so that the clamp component 1 can be firmly clamped on the pipe 42. When welding is required, the switching component 32 transmits the power of the motor 31 to the rotating component 2, driving the gear set 22 and the gear ring 23 to rotate, thereby driving the main board 24 and the welding head 41 to rotate in a circle. This power transmission method enables the device to efficiently complete the two key steps of clamping and welding.

[0026] The design of the welding component 4 enables the welding head 41 to rotate with the rotation of the main board 24, thereby achieving circumferential welding of the outer wall of the pipe. The welding component 4 generally includes a welding head 41 and related welding equipment, and can perform precise welding operations according to welding requirements.

[0027] The effects are as follows: (1) Improving welding accuracy and quality: With the precise clamping of the clamp component 1 and the stable rotation of the rotating component 2, the welding component 4 can accurately perform circumferential welding on the outer wall of the pipe. The coordinated cooperation of the gear set 22 and the gear ring 23 ensures the stability and accuracy of the welding process, avoids welding deviations caused by hand shaking or space limitations during manual welding, greatly improves the accuracy and quality of welding, ensures that the weld is symmetrical and stable, and meets the strict standards of aircraft pipe 42 for welding quality. (2) Achieving automated welding, speeding up and increasing efficiency: The design of the motor 31 and the switching component 32 in the power component 3 enables the entire welding process to be automated. From the clamping process of the pipe 42 to the circumferential rotation of the welding component 4, no manual intervention is required throughout the process, which significantly reduces the manual operation links and reduces the labor intensity. Automated operation not only improves welding efficiency, but also shortens welding time. It is especially suitable for scenes such as aircraft pipes 42 that require frequent maintenance and welding, and can effectively improve the overall efficiency of maintenance work. (3) Adapt to narrow spaces and enhance flexibility: The device is exquisitely designed and compact, and can operate flexibly in the narrow space where the aircraft pipe 42 is located. The structural layout of the clamp component 1 and the rotating component 2 enables it to adapt to pipes 42 of different sizes, and even in cramped spaces, it can accurately complete the welding task. This flexibility makes the device extremely potential for application in the field of aircraft pipe 42 maintenance, breaking the dilemma that traditional welding equipment is difficult to use in narrow spaces, and providing strong support for on-site maintenance of aircraft pipe 42.

[0028] Reference Figure 4-Figure 6 The power component 3 also includes a box body 33, on the bottom surface of which the screw 11 of the clamp component 1 is rotatably arranged, and on the side of the box body 33 a rotating rod 25 of the rotating component 2 is arranged, and the motor 31 is respectively connected to the screw 11 and the rotating rod 25 through a switching member 32.

[0029] It should be explained that the box 33 plays a key role in protecting and isolating the power component 3. Its internal structure is designed to protect key components such as the switching component 32, and prevent external factors from interfering with the operation of the switching component 32, thereby preventing power transmission failure. This design ensures the stability and reliability of power transmission and provides a basic guarantee for the normal operation of the entire device.

[0030] Reference Figure 4-Figure 6, the motor 31 is respectively connected to the screw 11 and the rotating rod 25 through the switching member 32. In the clamping stage, the power of the motor 31 is transmitted to the screw 11 of the clamp component 1 through the switching member 32, driving the screw 11 to rotate, thereby realizing the clamping action of the clamp component 1. In the welding stage, the switching member 32 switches the power of the motor 31 to the rotating rod 25 of the rotating component 2, driving the rotating rod 25 to rotate, and driving the rotating component 2 to rotate in a circle, thereby realizing the circumferential welding of the welding component 4. This design not only improves the efficiency of power transmission, but also reduces the complexity and cost of the equipment. Compared with using two motors 31 to control the clamp component 1 and the rotating component 2 respectively, this design is smoother in coordination, easier to operate, and improves the reliability and stability of the entire device.

[0031] In the automated operation of pipe 42 welding, a reasonable power control method is crucial to ensure welding quality and efficiency. Compared with using a single motor 31 to control the fixture component 1 and the rotating component 2 respectively, the sequential transmission of the power of the motor 31 through the switching member 32 has significant advantages. First, in terms of the smoothness and synchronization of the coordination, the switching member 32 scheme realizes the sequential control and power switching of the clamping and welding actions through the switching member 32, ensuring the seamless connection between the two actions and avoiding potential conflicts or interference. The independent motor 31 scheme requires precise control of the start, stop and speed of the two motors 31, which not only requires complex control algorithms and accurate sensor feedback, but also makes it difficult to ensure perfect synchronization between the two motors 31, which may lead to unstable clamping or reduced welding quality. Secondly, in terms of simplifying the control system and reducing costs, the switching member 32 scheme only requires one motor 31 and one switching member 32, which greatly simplifies the complexity of the control system and reduces the cost of hardware and software. The independent motor 31 scheme requires two motors 31, two drivers, multiple sensors and complex control algorithms, which increases the hardware cost and the difficulty of software development and debugging. In addition, in terms of improving reliability and reducing maintenance costs, the switching member 32 solution uses a mechanical switching mechanism, which has a simple structure, high reliability, and relatively low maintenance costs. The independent motor 31 solution requires the maintenance of two motors 31, two drivers, and multiple sensors. Failure of any one component may cause the entire system to fail. Finally, in terms of reducing volume and weight, the switching member 32 solution only requires one motor 31, which can reduce the volume and weight of the entire device, making it more compact and portable. The independent motor 31 solution requires two motors 31, which will increase the volume and weight of the entire device.

[0032] Specifically combined with the example of the technical solution, the switching member 32 solution also shows obvious advantages in the clamping force control and the rotation of the welding head 41. In terms of clamping force control, the use of the switching member 32 can ensure that the clamping force remains stable during the welding process. When the clamping is completed, the switching member 32 will lock the clamping mechanism to prevent the clamping force from loosening, while the use of the independent motor 31 requires continuous adjustment of the output of the clamping motor 31 to maintain the clamping force stable. In terms of the rotation of the welding head 41, the use of the switching member 32 can ensure that the welding head 41 can only start to rotate after the clamping is completed, so as to avoid the welding head 41 from colliding with the pipe 42 during the clamping process, while the use of the independent motor 31 requires precise control of the start time of the two motors 31 to avoid collision. In summary, the switching member 32 solution realizes the sequential control, power switching and decoupling of the clamping and welding actions through the switching member 32, which not only simplifies the control system, reduces costs, improves reliability, but also reduces volume and weight, and avoids over-constraint. In contrast, the independent motor 31 solution requires complex control algorithms and precise sensor feedback to achieve similar functions, and has higher costs and lower reliability. Therefore, using the switching member 32 for power transmission is better than controlling each component with a separate motor 31, and is more suitable for application in automated equipment such as pipe 42 welding that requires precise sequential operations.

[0033] Reference Figure 4-Figure 6 The switching member 32 includes a friction ring 321, the lower surface of the friction ring 321 contacts the gear plate 322 sleeved on the screw 11, a spring pin 323 is provided on the side of the gear plate 322, one end of the spring pin 323 is inserted into the tooth gap of the outer wall of the gear plate 322, and the output cylinder 311 of the motor 31 is inserted into the annular groove 3211 at the upper end of the friction ring 321, which is used to drive the friction ring 321 to rotate. An output bevel gear 312 is sleeved on the outer wall of the output cylinder 311, and the output bevel gear 312 is meshed with an input bevel gear 313 provided at one end of the rotating rod 25. An inclined groove 3231 is provided on the upper surface of the spring pin 323, and a straight rod 324 is provided above the inclined groove 3231. The upper end of the straight rod 324 is located on the lower surface of the output bevel gear 312, which is used to push the output bevel gear 312 to mesh with the input bevel gear 313.

[0034] It should be noted that the output tube 311 of the motor 31 is plugged into the annular groove 3211 on the upper end of the friction ring 321. This connection method is keyway matching. The design purpose of the output tube 311 of the motor 31 is to adapt to the internal screw 11 and ensure that the screw 11 can smoothly move up and down in the output tube 311. At the same time, since the output tube 311 of the motor 31 and the annular groove 3211 of the friction ring 321 are keyway matching, the friction ring 321 can be driven to rotate when the output tube 311 of the motor 31 rotates, and the friction ring 321 can also move up and down along the output tube 311. The lower surface of the friction ring 321 is in contact with the gear plate 322 sleeved on the screw 11. This contact relationship enables the friction ring 321 to rotate through the rotation of the gear plate 322. A spring pin 323 is arranged on the side of the gear plate 322, and one end of the spring pin 323 is inserted into the tooth gap of the outer wall of the gear plate 322. The main function of this design is that when the gear plate 322 rotates, the spring pin 323 will be squeezed out of the tooth gap, and then the output bevel gear 312 is driven to move up and down through the action of the straight rod 324, so as to contact or separate with the input bevel gear 313. This lifting movement is a key link in the working process of the switching member 32, which ensures the power switching between the clamp component 1 and the rotating component 2. The screw rod 11 and the cross plate 14 are screwed together, which means that a particularly tight lock is not required during the working process of the switching member 32. The spring pin 323 will be reinserted into the tooth gap after the gear plate 322 stops rotating, playing a role of limiting and ensuring the stability of the system in the working state. Although the spring pin 323 provides a certain locking function, it does not rely on it for complete locking. Such a design makes the switching member 32 more flexible during operation and also reduces the complex requirements for the locking mechanism.

[0035] Reference Figure 6 The inner wall of the hole of the output bevel gear 312 is provided with two symmetrical arc grooves 3121 , and the outer wall of the output tube 311 is provided with a protrusion 3111 , and the protrusion 3111 slides along the arc groove 3121 .

[0036] It should be noted that the output tube 311 is inserted into the annular groove 3211 of the friction ring 321, thereby directly driving the friction ring 321 to rotate. At the same time, the rotation of the output tube 311 drives the protrusion 3111 to move. The protrusion 3111 moves to either end of the arc groove 3121 and then drives the output bevel gear 312 to rotate. This setting is to ensure that when the motor 31 initially rotates, the friction ring 321 is driven first and then the output bevel gear 312 is driven, so that the clamp component 1 can be driven to move first and the connection with the rotating component 2 can be disconnected at the same time, ensuring that only the clamp component 1 is driven to move in the early stage.

[0037] Reference Figure 4A spring sleeve rod 325 is provided between the output bevel gear 312 and the friction ring 321 . The spring sleeve rod 325 is locked after being retracted to a certain position. An extrusion rod 326 is provided on the side of the box body 33 . The extrusion rod 326 unlocks the spring sleeve rod 325 .

[0038] It should be explained that the function of the spring sleeve rod 325 is to synchronously drive the friction ring 321 to rise when the output bevel gear 312 rises, separate the friction ring 321 from the gear plate 322, and disconnect the control of the clamp component 1. In the initial state, the output bevel gear 312 is meshed with the input bevel gear 313, the friction ring 321 is in contact with the gear plate 322, and the spring sleeve rod 325 is extended and expanded; when the friction ring 321 drives the gear plate 322 to rotate and squeeze out the spring pin 323, the output bevel gear 312 drops, the spring sleeve rod 325 drops and compresses the internal spring, and at the same time the internal pin drops to achieve plug-in locking, the spring sleeve rod 325 shrinks and locks, and then when the gear plate 322 stops rotating, the spring pin 323 is reset, and the output bevel gear 312 is locked. The friction ring 321 is driven to rise by the locked spring sleeve rod 325 to realize the switching of power; when the welding is completed, the squeeze rod 326 on the outside is pressed, and the squeeze rod 326 pushes the latch on the spring sleeve rod 325 to unlock, so that the spring sleeve rod 325 separates the output bevel gear 312 from the friction ring 321 and restores the initial state, and then the motor 31 drives the gear plate 322 to drive the clamp component 1 to unlock through the friction ring 321, and the device is removed from the pipe 42. When it is used again, the squeeze rod 326 is pressed again to reset it.

[0039] Reference Figure 1-Figure 4 The clamp component 1 includes a main body 12 installed below the main frame 21, and two symmetrical multi-link type clamps 13 are arranged in the main body 12. A cross plate 14 is arranged at the upper ends of the two multi-link type clamps 13. The screw 11 is screwed to the cross plate 14, and the lower end of the screw 11 is connected to the main body 12 through a bearing.

[0040] It should be noted that the screw 11 drives the cross plate 14 to rise and fall, and the cross plate 14 is installed at the upper end of the multi-link clamp 13. The multi-link clamp 13 is composed of two connecting rods connected end to end, wherein the lowermost connecting rod clamps the pipe 42, and the upper connecting rod is set to a bent shape and fixed to the main body 12 through a rotating shaft. The lowermost connecting rod is also hinged to the main body 12 through another connecting rod, so that when passing through the position of the cross plate 14, it can directly drive the lowermost connecting rod to deform, thereby realizing the clamping of the clamp component 1.

[0041] Reference Figure 1-Figure 4The main frame 21 and the main board 24 are connected by a keyway, and the slot on the main board 24 is set to be semicircular, and the cross section of the convex key on the main frame 21 is set to be T-shaped. The gear set 22 includes a first pinion 221 connected to the rotating rod 25, and two sets of intermediate large gears 222 are symmetrically arranged about the first pinion 221. A second pinion 223 is arranged on the other side of each intermediate large gear 222, and the first pinion 221 and the second pinion 223 are both meshed with the gear ring 23.

[0042] The main frame 21 is provided with a convex key, and the main board 24 is provided with a groove, and the convex key is inserted into the groove, so that when the gear set 22 installed on the main frame 21 drives the gear ring 23 to rotate, the gear ring 23 drives the main board 24 fixedly connected thereto to rotate along the key groove track, thereby realizing the main board 24 to perform a circular rotation on the main frame 21. The three pinion gears are set to open the spacing to ensure that when the gear ring 23 rotates to any position, there are always one or two pinion gears in contact with it and can drive it to rotate. The large gear is set to transmit power to each pinion gear to ensure that the pinion gears rotate synchronously.

[0043] Reference Figure 1-Figure 4 The welding component 4 includes a welding head 41 installed on the back of the main board 24, and the welding head 41 is connected to a welding machine through a pipeline 42.

[0044] It should be noted that the welding component 4 is composed of a welding head 41 and a welding machine. The welding head 41 is installed on the back of the main board 24 and is connected to the welding machine through a pipe 42. The welding head 41 is responsible for the actual welding work, and the welding machine provides the energy and materials required for welding. This design enables the welding head 41 to perform circumferential welding as the main board 24 rotates, and at the same time obtains the required welding resources from the welding machine through the pipe 42, ensuring the continuity and stability of the welding process.

[0045] Reference Figure 1-Figure 6First, place the clamp on the pipe 42, and then move the position of the clamp until the welding head 41 corresponds to the top of the weld. At this time, start the motor 31, and the motor 31 drives the friction ring 321 to rotate through the output tube 311. Since the friction ring 321 fits with the gear plate 322 at this time, the gear plate 322 is driven to rotate. The rotation of the gear plate 322 drives the screw 11 to rotate. At the same time, the rotation of the gear plate 322 also squeezes out the spring pin 323 inserted in the outer tooth gap thereof. The outward movement of the spring pin 323 causes the straight rod 324 located on the inclined groove 3231 to drop, and the straight rod The downward movement of 324 causes the output bevel gear 312 at its upper end to move downward, thereby separating the output bevel gear 312 from the input bevel gear 313. At the same time, the spring sleeve rod 325 between the output bevel gear 312 and the friction ring 321 contracts and is locked. The rotation of the screw 11 drives the cross plate 14 to move up and down, and the cross plate 14 drives the two multi-link type clamping claws 13 symmetrically arranged on the left and right to deform, thereby clamping the pipe 42. When the gear plate 322 cannot rotate after the pipe 42 is clamped, the spring pin 323 is automatically re-inserted into the tooth gap of the gear plate 322, and the inclined groove 3231 pushes the straight rod 324 to move upward. The output bevel gear 312 is moved upward, and the output bevel gear 312 drives the friction ring 321 to move upward through the spring sleeve rod 325, so that the friction ring 321 is separated from the gear plate 322, and the output bevel gear 312 is meshed with the input bevel gear 313, and then the motor 31 drives the output bevel gear 312 to rotate through the output tube 311, and the output bevel gear 312 drives the input bevel gear 313 to rotate, and the input bevel gear 313 drives the rotating rod 25 to rotate, and the rotating rod 25 drives the first pinion 221 to rotate, and the first pinion 221 drives the transfer large gears 222 on both sides to rotate, and the two sides The transfer large gear 222 drives the second small gear 223 on the other side to rotate, so that under the joint action of the first small gear 221 and the two second small gears 223, the gear ring 23 meshing with them rotates, and the gear ring 23 drives the main board 24 to rotate on the main frame 21, so that the welding head 41 installed on the back of the main board 24 rotates in a circle, and then the welding head 41 performs a circle rotation welding at the weld, realizing fully automatic welding. After welding is completed, the extrusion rod 326 is pressed to unlock the spring sleeve rod 325, so that the output bevel gear 312 and the friction ring 321 are reset.

[0046] Finally, it should be pointed out that the methods and devices described in detail above are only embodiments, and those skilled in the art can modify these embodiments in different ways without departing from the scope of the present invention.

Claims

1. A positioning device for aircraft pipeline welding, characterized in that: include, A clamp component (1) is clamped on the outer wall of the pipe in a clamping manner; The rotating component (2) comprises a main frame (21) fixed to the clamp component (1), the main frame (21) being provided with a gear set (22), the outer wall of the gear set (22) being meshingly connected with a semicircular gear ring (23), the gear ring (23) being mounted on a main board (24) to drive the main board (24) to rotate around the pipe; A power component (3) comprising a motor (31) and a switching component (32), wherein the switching component (32) sequentially transmits the power of the motor (31) to the clamp component (1) and the rotating component (2); A welding component (4) is mounted on the back side of the main board (24) and performs circumferential rotation together with the main board (24) to achieve circumferential welding.

2. The positioning device for aircraft pipe welding according to claim 1, characterized in that: The power component (3) further comprises a box (33), on the bottom surface of which a screw (11) of the clamp component (1) is rotatably arranged, and on the side surface of the box (33) a rotating rod (25) of the rotating component (2) is arranged, and the motor (31) is respectively connected to the screw (11) and the rotating rod (25) through a switching member (32).

3. The positioning device for aircraft pipe welding according to claim 2, characterized in that: The switching member (32) comprises a friction ring (321), the lower surface of the friction ring (321) being in contact with a gear plate (322) sleeved on the screw rod (11), a spring pin (323) being provided on the side of the gear plate (322), one end of the spring pin (323) being inserted into a tooth gap on an outer wall of the gear plate (322), and an output cylinder (311) of the motor (31) being inserted into an annular groove (3211) at an upper end of the friction ring (321) for driving the friction ring (321) to rotate.

4. The positioning device for aircraft pipe welding according to claim 3, characterized in that: An output bevel gear (312) is sleeved on the outer wall of the output cylinder (311), and the output bevel gear (312) meshes with an input bevel gear (313) provided at one end of the rotating rod (25). An inclined groove (3231) is provided on the upper surface of the spring pin (323), and a straight rod (324) is provided above the inclined groove (3231). The upper end of the straight rod (324) is located on the lower surface of the output bevel gear (312) and is used to push the output bevel gear (312) to mesh with the input bevel gear (313).

5. The positioning device for aircraft pipe welding according to claim 4, characterized in that: The inner wall of the hole of the output bevel gear (312) is provided with two symmetrical arc grooves (3121), and the outer wall of the output cylinder (311) is provided with a protrusion (3111), and the protrusion (3111) slides along the arc groove (3121).

6. The positioning device for aircraft pipe welding according to claim 4, characterized in that: A spring sleeve rod (325) is provided between the output bevel gear (312) and the friction ring (321), and the spring sleeve rod (325) is locked after being retracted to a certain position. An extrusion rod (326) is provided on the side of the box body (33), and the extrusion rod (326) unlocks the spring sleeve rod (325).

7. The positioning device for aircraft pipeline welding according to claim 2, characterized in that: The clamp component (1) comprises a main body (12) installed below a main frame (21), two symmetrical multi-link type clamps (13) are arranged inside the main body (12), a transverse plate (14) is arranged at the upper ends of the two multi-link type clamps (13), the screw rod (11) is screwed to the transverse plate (14), and the lower end of the screw rod (11) is connected to the main body (12) via a bearing.

8. The positioning device for aircraft pipe welding according to claim 2, characterized in that: The main frame (21) and the main board (24) are connected via a keyway, the slot on the main board (24) is arranged in a semicircular shape, and the cross section of the protruding key on the main frame (21) is arranged in a T-shape.

9. The positioning device for aircraft pipeline welding according to claim 2, characterized in that: The gear set (22) comprises a first pinion (221) connected to the rotating rod (25), two sets of intermediate large gears (222) are symmetrically arranged about the first pinion (221), a second pinion (223) is arranged on the other side of each intermediate large gear (222), and the first pinion (221) and the second pinion (223) are both meshed with the gear ring (23).

10. The positioning device for aircraft pipe welding according to claim 1, characterized in that: The welding component (4) comprises a welding head (41) mounted on the back side of the main board (24); the welding head (41) is connected to a welding machine via a pipe (42).

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