Keel beam lifting positioning system based on electric driving

Abstract

The invention provides a keel beam lifting and positioning system based on electric drive, which belongs to the technical field of aircraft assembly and comprises two groups of identical independent lifting systems, the two groups of identical independent lifting systems can form linkage and independently operate, and synchronous lifting and positioning and independent lifting fine adjustment are realized. Each independent lifting system comprises a right-angle hand-cranking speed reducer, a servo motor, a lifter push rod, supporting rods, a keel beam positioner and the like, the right-angle hand-cranking speed reducer is connected with the servo motor, the output end of the servo motor is connected with the lifter push rod to provide lifting power, and the supporting rods are arranged on the two sides of the lifter push rod and used for auxiliary supporting. And the keel beam positioner is used for positioning and locking the keel beam. The device is reliable in performance, and has relatively high overload capacity and relatively high precision; a double-system linkage design is adopted, the overall stability of the system is improved, and independent lifting can be achieved; an adjustable speed reducer is arranged, so that the lifting speed can be adjusted; the system is small in occupied space, simple in structure and convenient to operate; and the stroke protection function is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of aircraft assembly, and relates to a keel beam lifting and positioning system based on electric drive. Background Art

[0002] The lifting and positioning system currently used is a mechanical lifting system, which manually drives the lifting device up and down. This type of equipment has acceptable stability, but occupies a large area, is very difficult to drive, and can only achieve synchronous lifting, and cannot achieve individual lifting and fine-tuning. The device uses an active drive to drive a driven device for lifting and lowering movements, and a large driving force is required at the rotating wheel. Once the internal transmission device fails or loses, the driving force will be greatly increased or even stuck. In addition, the active drive driven design may cause displacement loss during the transmission process, resulting in the front and rear ends of the keel beam being unable to simultaneously close to the aircraft barrel section product. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a keel beam lifting and positioning system based on electric drive, which integrates the servo motor, reducer, lifting device, positioning device, etc. into an integrated and lightweight design, and is used to realize the positioning of the keel beam assembly during the aircraft assembly process. The present invention is based on electric drive, occupies a small space, is easy to operate, can realize the synchronous lifting and lowering of the keel beam, and can also perform fine adjustment, which greatly reduces the labor intensity and improves the positioning stability of the product.

[0004] The specific technical solutions of the present invention are as follows:

[0005] A keel beam lifting and positioning system based on electric drive, the keel beam lifting and positioning system includes two identical separate lifting systems, the two can form a linkage and operate independently, realize synchronous lifting and positioning and independent lifting fine adjustment, each independent lifting system includes a right-angle hand-cranked reducer 1, a servo motor 2, a lifter push rod 3, a support rod 4, a keel beam positioner 5, a base, and a mounting plate.

[0006] The base is a box-type structure, which is fixed on the ground, and two sets of independent lifting systems are symmetrically arranged.

[0007] The elevator push rod 3 is installed at the central position inside the base, and its lifting rod passes through the upper cover of the base box. The upper end of the lifting rod is fixedly connected to the center of the mounting plate. The mounting plate is used to fix the keel beam. The main body of the elevator push rod 3 is connected to the output end of the servo motor 2, and is used to convert the force provided by the servo motor 2 into a lifting force and move up and down, so as to drive the keel beam to lift and lower. The elevator push rod 3 has the function of locking the lifting rod, which can ensure that the keel beam is firmly positioned.

[0008] The servo motor 2 is installed on the side wall of the base box, and its output end passes through the box and is connected to the main body of the lift push rod 3 to provide lifting power. The servo motor 2 has its own brake. The servo motors 2 in the two separate lifting systems are controlled by a remote control, can be synchronously linked, and can also be controlled individually; the servo motor 2 has a power of 0.4kw, a rated torque of 1.27Nm, and a rated speed of 3000rmp.

[0009] The right-angle hand-cranked reducer 1 is installed on the servo motor 2 and is used to reduce the speed of the servo motor 2 by manual adjustment. Its planetary speed ratio is 10 and the hand-cranked speed ratio is 22.

[0010] The support rods 4 are respectively provided with two in each separate lifting system, and their upper ends are fixedly connected to the lower surface of the mounting plate and symmetrically arranged on both sides of the lifting rod of the lift push rod 3. As the lifting rod moves up and down, the lower ends of the two support rods 4 pass through the upper cover of the base box and cooperate with the upper cover of the base box to provide support force for the keel beam and play an auxiliary support role.

[0011] The keel beam positioner 5 is installed on the upper surface of the mounting plate and is used to position and lock the keel beam.

[0012] The beneficial effects of the present invention are:

[0013] It is driven by a servo motor, has reliable performance, large overload capacity, and high precision; it adopts a dual-system linkage design to improve the overall stability of the system and can be lifted and lowered independently; it is equipped with an adjustable reducer to adjust the lifting speed; the system occupies a small space, has a simple structure, and is easy to operate; it has a stroke protection function. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 This is a schematic diagram of the structure of a right-angle hand-cranked reducer.

[0016] Figure 3 Schematic diagram of the servo motor structure.

[0017] Figure 4 Schematic diagram of the lift push rod structure.

[0018] Figure 5 Schematic diagram of the support rod structure.

[0019] Figure 6 This is a schematic diagram of the keel beam locator structure.

[0020] In the figure: 1 right-angle hand-cranked reducer; 2 servo motor; 3 lift push rod; 4 support rod; 5 keel beam positioner. DETAILED DESCRIPTION

[0021] The technical solution of the present invention is described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments improved or adjusted by ordinary technicians in this field based on the embodiments of the present invention belong to the protection scope of the present invention.

[0022] A keel beam lifting and positioning system based on electric drive, the keel beam lifting and positioning system includes two identical separate lifting systems, which can form a linkage and operate independently to achieve synchronous lifting and positioning and separate lifting and fine adjustment. Each separate lifting system includes a right-angle hand-cranked reducer 1, a servo motor 2, a lifter push rod 3, a support rod 4, a keel beam positioner 5, a base, and a mounting plate. Figure 1 shown.

[0023] The base is a box-type structure, which is fixed on the ground, and two sets of independent lifting systems are symmetrically arranged.

[0024] The lift push rod 3 is installed at the center position inside the base, and its lift rod passes through the upper cover of the base box. The upper end of the lift rod is fixedly connected to the center of the mounting plate. The mounting plate is used to fix the keel beam. The main body of the lift push rod 3 is connected to the output end of the servo motor 2, which is used to convert the force provided by the servo motor 2 into a lifting force and move up and down, and is used to drive the keel beam to move up and down. The lift push rod 3 has the function of locking the lift rod, which can ensure that the keel beam is firmly positioned. Figure 4 shown.

[0025] The servo motor 2 is installed on the side wall of the base box, and its output end passes through the box and is connected to the main body of the lift push rod 3 to provide lifting power. The servo motor 2 has its own brake. The servo motors 2 in the two separate lifting systems are controlled by remote controls, which can be synchronized and can also be controlled individually; the servo motor 2 has a power of 0.4kw, a rated torque of 1.27Nm, and a rated speed of 3000rmp. Figure 3 shown.

[0026] The right-angle hand-cranked reducer 1 is installed on the servo motor 2 and is used to reduce the speed of the servo motor 2 by manual adjustment. Its planetary speed ratio is 10 and the hand-cranked speed ratio is 22. Figure 2 shown.

[0027] The support rods 4 are provided with two in each separate lifting system, and their upper ends are fixedly connected to the lower surface of the mounting plate and symmetrically arranged on both sides of the lifting rod of the lift push rod 3. As the lifting rod moves up and down, the lower ends of the two support rods 4 pass through the upper cover of the base box and cooperate with the upper cover of the base box to provide support for the keel beam and play an auxiliary support role. Figure 5 shown.

[0028] The keel beam positioner 5 is installed on the upper surface of the mounting plate and is used to position and lock the keel beam. Figure 6 shown.

[0029] The working principle is as follows: the first step is to lower the two separate lifting systems to the lowest state through the remote control, place the keel beam on the mounting plates of the two separate lifting systems, and position and lock them through the keel beam positioner 5; the second step is to control the two separate lifting systems to rise synchronously through the remote control, and the speed is set from fast to slow. When the top surface of the keel beam approaches the bottom surface of the barrel section, the two separate lifting systems stop moving; the third step is to fine-tune the two separate lifting systems respectively to make the keel beam close to the barrel section product; the fourth step is to lock it through the support rod 4 to ensure the stable positioning of the keel beam.

[0030] The above-described embodiments merely express the implementation methods of the present invention, but they should not be understood as limiting the scope of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A keel beam lifting and positioning system based on electric drive, characterized in that: The keel beam lifting and positioning system comprises two identical separate lifting systems, which can form a linkage and operate independently to achieve synchronous lifting and positioning and independent lifting and fine-tuning.

2. The electrically driven keel beam lifting and positioning system according to claim 1, characterized in that: Each individual lifting system includes a right-angle hand-cranked reducer (1), a servo motor (2), a lift push rod (3), a keel beam positioner (5), a base, and a mounting plate; The base is a box-type structure, which is fixed on the ground, and two sets of independent lifting systems are symmetrically arranged; The lift push rod (3) is installed at the center position inside the base, the lift rod passes through the upper cover of the base box, the upper end of the lift rod is fixedly connected to the center of the mounting plate, the mounting plate is used to fix the keel beam, the main body of the lift push rod (3) is connected to the output end of the servo motor (2), and the lift push rod (3) has a locking function; The servo motor (2) is mounted on the side wall of the base box, and its output end passes through the box and is connected to the main body of the lift push rod (3) to provide lifting power. The servo motor (2) has its own brake. The servo motors (2) in the two separate lifting systems can be synchronously linked and can also be controlled to move independently. The right-angle hand-cranked reducer (1) is installed on the servo motor (2) and is used to reduce the speed of the servo motor (2) through manual adjustment; The keel beam positioner (5) is installed on the upper surface of the mounting plate and is used to position and lock the keel beam.

3. The electrically driven keel beam lifting and positioning system according to claim 2 is characterized in that: The servo motor (2) has a power of 0.4 kW, a rated torque of 1.27 Nm, and a rated speed of 3000 rpm.

4. The electrically driven keel beam lifting and positioning system according to claim 2 is characterized in that: The planetary speed ratio of the right-angle hand-cranked reducer (1) is 10, and the hand-cranked speed ratio is 22.

5. The electrically driven keel beam lifting and positioning system according to claim 2, characterized in that: The separate lifting system further comprises support rods (4). Two support rods (4) are provided in each separate lifting system. The upper ends of the support rods (4) are fixedly connected to the lower surface of the mounting plate and are symmetrically arranged on both sides of the lifting rod of the lift push rod (3). As the lifting rod moves up and down, the lower ends of the two support rods (4) pass through the upper cover of the base box and cooperate with the upper cover of the base box to assist in supporting the keel beam.

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