Heavy-load adjustable lifting assembly of large-size aircraft component assembling tool

Abstract

The utility model belongs to the technical field of assembly tools, and discloses a heavy-load adjustable lifting assembly of a large-size aircraft part assembly tool, which comprises a left lifting assembly and a right lifting assembly which are used for driving a main body frame to lift when the tool is transferred, and each lifting assembly comprises a left lifting group, a right lifting group, a connecting rod and a servo motor, the output ends of the two ends of the servo motor are each connected with one connecting rod, the two ends of the two connecting rods are connected with the left lifting set and the right lifting set respectively, the servo motor synchronously drives the left lifting set and the right lifting set through the connecting rods, and the left lifting set and the right lifting set are the same in structure. According to the heavy-load adjustable lifting wheel set of the large-size aircraft component assembling tool, the assembling tool can move, a traditional aircraft component assembling fixed tool is changed into a movable tool, and the utilization rate of automation equipment is greatly improved.

Description

Technical Field

[0001] This utility model belongs to the field of assembly tooling technology, and in particular relates to a heavy-duty adjustable lifting component for assembling large-size aircraft parts. Background Technology

[0002] From the perspective of the overall aircraft assembly hierarchy, the entire aircraft assembly and manufacturing process involves a large number of component-level and part-level assembly tasks. These levels often involve significant work in part positioning, drilling, and riveting. Currently, domestic OEMs still rely on traditional fixed-position assembly fixtures, employing manual drilling and riveting methods, which severely restricts the efficiency and quality of the entire aircraft assembly process. In recent years, OEMs have successively purchased automated equipment such as robotic drilling and riveting systems and tracked robotic drilling systems. However, this equipment currently suffers from poor versatility due to limitations in its installation area, resulting in extremely low utilization. To improve the utilization rate of automated equipment, it is urgent to transform many traditional fixed fixtures into mobile assembly fixtures. These fixtures should be moved to the equipment's working area via AGVs or manually, allowing the equipment to replace manual labor in automated drilling and riveting work. This would improve the utilization rate of automated equipment, while simultaneously shortening product delivery cycles and enhancing assembly technology. Utility Model Content

[0003] The purpose of this invention is to provide a heavy-duty adjustable lifting assembly for assembling large-size aircraft parts, in order to solve the aforementioned technical problems.

[0004] To achieve the above objectives, the specific technical solution of the heavy-duty adjustable lifting assembly of a large-size aircraft component assembly fixture of this utility model is as follows:

[0005] A heavy-duty adjustable lifting assembly for a large-size aircraft component assembly tooling includes two lifting assemblies, left and right, used to drive the lifting of the main frame during tooling transfer. Each lifting assembly includes a left lifting group, a right lifting group, a connecting rod, and a servo motor. The output ends of the servo motors are respectively connected to a connecting rod, and the two connecting rods are respectively connected to the left lifting group and the right lifting group. The servo motors synchronously drive the left lifting group and the right lifting group through the connecting rods. The left lifting group and the right lifting group have the same structure.

[0006] Furthermore, the left lifting assembly includes a fixed base, a screw jack, a linear guide rail, a sliding block, and adjustable casters. The fixed base is fixedly installed on the main frame. The screw jack includes a screw jack body, a screw, and a nut. The screw jack body is fixedly installed above the fixed base. The screw extends into the fixed base, and the nut is threadedly connected to the screw. The input end of the screw jack body is fixedly connected to a connecting rod. The connecting rod rotates under the drive of a servo motor, driving the screw jack body to rotate. The nut is fixedly connected to the sliding block, thereby causing the sliding block to slide up and down along the screw. The linear guide rail is fixedly installed on both sides of the inner wall of the fixed base. The two sides of the sliding block are slidably connected to the linear guide rail. The adjustable casters are fixedly connected to the bottom of the sliding block and move up and down with the sliding block.

[0007] Furthermore, the screw jack has a mechanical self-locking function, which enables it to lock itself.

[0008] Furthermore, the fixed base has a limiting groove on one side and a limiting block on the upper side of the sliding block. The limiting block moves within the limiting groove to limit the moving distance of the sliding block.

[0009] Furthermore, contact sensors are fixed at the upper and lower ends of the limiting groove. The contact sensors are electrically connected to the controller of the assembly fixture. When the limiting block touches the contact sensor, it sends a position signal to the controller to indicate that the upper or lower position has been reached.

[0010] Furthermore, the directional swivel caster includes a wheel seat, a hinge, a wheel, and a buffer spring. The wheel seat is rotatably connected to the lower part of the sliding block. The lower end of the wheel seat is fixedly connected to the middle of the hinge by a nut. One end of the hinge is rotatably connected to the wheel, and the other end is fixedly connected to the buffer spring. One end of the buffer spring is fixed to the wheel seat, and the other end is fixedly connected to the hinge, which is used to provide cushioning during the process of the directional swivel caster descending and contacting the ground.

[0011] Furthermore, the fixed base has fixed holes on both sides for fixing the connection positioning component and the guide component. The connection positioning component is used to align with the holes on the transfer vehicle for tooling transfer. The guide component is used to dock with the slide rail on the ground, so that the tooling slides into the fixed point on the ground, thereby achieving accurate fixing of the tooling to the ground.

[0012] The heavy-duty adjustable lifting assembly of a large-size aircraft component assembly tooling of this utility model has the following advantages:

[0013] 1. The heavy-duty adjustable lifting wheel set of the large-size aircraft component assembly tooling of this utility model realizes the mobility of the assembly tooling, changing the traditional fixed tooling for aircraft component assembly into a mobile tooling, and greatly improving the utilization rate of automated equipment.

[0014] 2. The heavy-duty adjustable lifting wheel assembly of the large-size aircraft component assembly tooling of this utility model has a limit groove, a limit stop and a contact sensor, which can control the range of ascent and descent, indicate the ascent or descent position and improve control accuracy.

[0015] 3. This utility model's heavy-duty adjustable lifting component has fixing holes on both sides, which can be used to fix and connect the positioning component and the guide component, providing lifting and support functions in conjunction with AGV vehicles; it can be moved manually or by AGV vehicles.

[0016] 4. This utility model adopts a modular design, which is highly adaptable to the size of aircraft assembly tooling and has low cost. Attached Figure Description

[0017] Figure 1 A schematic diagram of the assembly tooling structure for large-size aircraft components according to this utility model;

[0018] Figure 2 A schematic diagram of the heavy-duty adjustable lifting assembly structure of the large-size aircraft component assembly tooling of this utility model.

[0019] Figure 3 This is a schematic diagram of the screw jack structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the limiting groove, limiting block, and contact sensor structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the directional universal wheel adjusting caster structure of this utility model;

[0022] The markings in the diagram are as follows: 1. Main frame; 2. Left lifting assembly; 21. Fixed base; 211. Limiting groove; 212. Contact sensor; 22. Screw jack; 221. Screw jack body; 222. Screw; 223. Nut; 23. Linear guide rail; 24. Sliding block; 241. Limiting stop; 25. Adjustable caster; 251. Wheel seat; 252. Hinge; 253. Wheel; 254. Buffer spring; 3. Right lifting assembly; 4. Connecting rod; 5. Servo motor. Detailed Implementation

[0023] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed account of a heavy-duty adjustable lifting assembly for a large-size aircraft component assembly fixture.

[0024] like Figure 1As shown, a heavy-duty adjustable lifting assembly of a large-size aircraft component assembly tooling of this utility model is installed on both sides of the lower part of the main frame 1 of the large-size aircraft component assembly tooling. It includes two lifting assemblies, left and right, which can be controlled independently or in conjunction, and are used to drive the lifting of the main frame 1 during tooling transfer.

[0025] like Figure 2 As shown, a single lifting assembly includes a left lifting group 2, a right lifting group 3, a connecting rod 4, and a servo motor 5. The output ends of the two ends of the servo motor 5 are respectively connected to a connecting rod 4. The two ends of the two connecting rods 4 are respectively connected to the left lifting group 2 and the right lifting group 3. The servo motor drives the left lifting group 2 and the right lifting group 3 synchronously through the connecting rods 4. The left lifting group 2 and the right lifting group 3 have the same structure. Here, the left lifting group 2 is used as an example for explanation.

[0026] like Figure 5 As shown, the left lifting assembly 2 includes a fixed base 21, a screw jack 22, a linear guide rail 23, a sliding block 24, and directional swivel casters 25. The fixed base 21 is fixedly installed on the main frame 1, as shown. Figure 3 As shown, the screw jack 22 includes a screw jack body 221, a screw 222, and a nut 223. The screw jack body 221 is fixedly installed above the fixed base 21. The screw 222 extends into the fixed base 21. The nut 223 is threadedly connected to the screw 222. The input end of the screw jack body 221 is fixedly connected to the connecting rod 4. The connecting rod 4 rotates under the drive of the servo motor 5, driving the screw jack body 221 to rotate and thus the screw 222. The nut 223 is fixedly connected to the sliding block 24, thereby causing the sliding block 24 to slide up and down along the screw 222. The screw jack 22 has a mechanical self-locking function, enabling it to lock itself. Linear guide rails 23 are fixedly installed on both sides of the inner wall of the fixed base 21. The two sides of the sliding block 24 are slidably connected to the linear guide rails 23. The linear guide rails 23 can limit the lateral movement of the sliding block 24 and maintain the vertical movement of the sliding block 24. Adjustable casters 25 are fixedly connected to the bottom of the sliding block 24 and move up and down with the sliding block 24.

[0027] like Figure 4 As shown, the fixed base 21 also has a limiting groove 211 on one side, and a limiting stop 241 on the upper side of the sliding block 24. The limiting stop 241 moves within the limiting groove 211 to limit the movement distance of the sliding block 24. At the same time, contact sensors 212 are fixed at the upper and lower ends of the limiting groove 211. The contact sensors 212 are electrically connected to the controller of the assembly fixture. When the limiting stop 241 touches the contact sensor 212, it sends a position signal to the controller to indicate that the rise or fall has reached the correct position, thereby improving control accuracy.

[0028] like Figure 5As shown, the directional swivel caster 25 includes a wheel seat 251, a hinge 252, a wheel 253, and a buffer spring 254. The wheel seat 251 is rotatably connected to the lower part of the sliding block 24. The lower end of the wheel seat 251 is fixedly connected to the hinge 252 by a nut. One end of the hinge 252 is rotatably connected to the wheel 253, and the other end is fixedly connected to the buffer spring 254. One end of the buffer spring 254 is fixed to the wheel seat 251, and the other end is fixedly connected to the hinge 252. It is used to provide cushioning during the process of the directional swivel caster 25 descending and contacting the ground, and to prevent the directional swivel caster 25 from being damaged by gravity impact.

[0029] The fixed base 21 has fixed holes on both sides for fixing the connection positioning component and the guide component (not shown in the figure). The connection positioning component is used to align with the holes on the transfer vehicle for tooling transfer; the guide component is used to dock with the slide rail on the ground so that the tooling slides into the fixed point on the ground to achieve accurate fixing of the tooling to the ground.

[0030] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A heavy duty adjustable lift assembly for a large aircraft component assembly fixture, comprising: The left and right two lifting assemblies are used for driving the lifting of the main body frame (1) during the transfer of the tooling, and each lifting assembly comprises a left lifting group (2), a right lifting group (3), a connecting rod (4) and a servo motor (5), the two ends of the servo motor (5) are connected with a connecting rod (4) respectively, the two ends of the two connecting rods (4) are connected with the left lifting group (2) and the right lifting group (3) respectively, the servo motor (5) synchronously drives the left lifting group (2) and the right lifting group (3) through the connecting rod (4), and the left lifting group (2) and the right lifting group (3) are the same in structure.

2. The heavy duty adjustable lift assembly for large size aircraft component assembly tooling of claim 1, wherein, The left lifting group (2) comprises a fixed seat (21), a screw lifter (22), a linear guide rail (23), a sliding block (24) and a directional universal wheel adjusting trolley (25), the fixed seat (21) is fixedly installed on the main body frame (1), the screw lifter (22) comprises a screw lifter body (221), a screw rod (222) and a nut (223), the screw lifter body (221) is fixedly installed above the fixed seat (21), the screw rod (222) extends into the fixed seat (21), the nut (223) is threadedly connected with the screw rod (222), the input end of the screw lifter body (221) is fixedly connected with the connecting rod (4), the connecting rod (4) is driven to rotate by the servo motor (5) to drive the screw lifter body (221) and the screw rod (222) to rotate, the nut (223) is fixedly connected with the sliding block (24), so that the sliding block (24) slides up and down along the screw rod (222), the linear guide rail (23) is fixedly installed on the inner wall of the fixed seat (21), the two sides of the sliding block (24) are slidably connected with the linear guide rail (23), and the directional universal wheel adjusting trolley (25) is fixedly connected with the lower side of the sliding block (24) and rises and falls along with the sliding block (24).

3. The heavy duty adjustable lift assembly for large aircraft component assembly tooling of claim 1 wherein, The screw lifter (22) has a mechanical self-locking function and can realize self-locking.

4. The heavy duty adjustable lift assembly for large aircraft component assembly tooling of claim 2, wherein, The fixed seat (21) further has a limiting groove (211) on one side, the sliding block (24) is provided with a limiting block (241) on one side above, the limiting block (241) moves in the limiting groove (211) and is used for limiting the movement distance of the sliding block (24).

5. The heavy duty adjustable lift assembly for large aircraft component assembly tooling of claim 4, wherein, The limiting groove (211) is fixed with a contact sensor (212) at the upper end and the lower end, the contact sensor (212) is electrically connected with a controller of the assembly tooling, when the limiting block (241) touches the contact sensor (212), a signal is sent to the controller, and it is prompted that the lifting or the lowering is in place.

6. The heavy duty adjustable lift assembly for large aircraft component assembly tooling of Claim 2, wherein, The directional universal wheel adjusting trolley (25) comprises a wheel seat (251), a hinge (252), a wheel (253) and a buffer spring (254), the wheel seat (251) is rotatably connected below the sliding block (24), the lower end of the wheel seat (251) is fixedly connected with the middle of the hinge (252) through a nut (223), one end of the hinge (252) is rotatably connected with the wheel (253), and the other end is fixedly connected with the buffer spring (254), one end of the buffer spring (254) is fixed on the wheel seat (251), and the other end is fixedly connected with the hinge (252), so as to provide buffering during the process that the directional universal wheel adjusting trolley (25) contacts the ground.

7. The heavy duty adjustable lift assembly for large aircraft component assembly tooling of claim 2, wherein, The fixed seat (21) is provided with fixed hole positions on both sides, which are used for fixedly connecting a positioning assembly and a guiding assembly, the connecting positioning assembly is used for aligning the hole positions on the transfer trolley and transferring the tooling; the guiding assembly is used for docking with the slide rails on the ground, so that the tooling slides into the fixed points on the ground, and accurate fixing of the tooling on the ground is realized.

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