阅读说明：本技术 一种大型飞机翼盒总装型架转站结构及转站方法 (Large aircraft wing box final assembly type frame transfer station structure and transfer station method ) 是由 赵安安 郭峰 赵成 蔡继钊 于 2020-05-22 设计创作，主要内容包括：本申请公开了一种大型飞机翼盒总装型架转站结构,包含钢地轨、轮组结构、X方向轮组、Y方向轮组、型架定位结构和牵引车；轮组结构安装在翼盒总装型架底盘两侧,每个轮组结构包含独立的X方向轮组和Y方向轮组,用于翼盒总装型架在X方向和Y方向地轨上移动,Y方向轮组带有升降和锁紧功能,通过Y方向轮组升降实现X方向轮组和Y方向轮组的切换。本发明采用静摩擦系数小的钢制轮和钢地轨配合,实现大尺寸、大重量飞机翼盒总装型架在生产线狭小空间的移动问题,其结构和方法便于实施且安全性高。(The application discloses a large airplane wing box general assembly type frame transfer station structure which comprises a steel ground rail, a wheel set structure, an X-direction wheel set, a Y-direction wheel set, a type frame positioning structure and a tractor; wheel set structural mounting contains independent X direction wheelset and Y direction wheelset in wing box assembly type frame chassis both sides, every wheelset structure for wing box assembly type frame moves on X direction and Y direction ground rail, and Y direction wheelset has lift and locking function, goes up and down through Y direction wheelset and realizes the switching of X direction wheelset and Y direction wheelset. The invention adopts the cooperation of the steel wheels with small static friction coefficient and the steel ground rail, realizes the movement problem of the large-size and heavy-weight airplane wing box assembly frame in a narrow space of a production line, and has convenient implementation and high safety of the structure and the method.)

1. A large-scale aircraft wing box assembly type frame transfer station structure is characterized by comprising a steel ground rail, a wheel set structure, an X-direction wheel set, a Y-direction wheel set, a type frame positioning structure and a tractor; the steel ground rail consists of an X-direction ground rail and a Y-direction ground rail, the X-direction ground rail and the Y-direction ground rail are arranged on the ground of the factory building, the X-direction ground rail consists of two parallel rails, and the distance between the rails is consistent with the width of the wing box general assembly type frame; the Y-direction ground rail is overlapped with the X-direction ground rail and is vertical to the X-direction ground rail, the Y-direction ground rail consists of four parallel rails, wherein the two outer rails are guiding ground rails, the distance between the rails is consistent with the length of the wing box general assembly frame, and the two inner rails are bearing ground rails; the wheel set structure is divided into four groups, eight in total, the wheel set structure is uniformly arranged along a chassis of the wing box assembly type frame, the wheel set structure interval is consistent with the Y-direction ground rail interval, each wheel set structure consists of an X-direction wheel set, a Y-direction wheel set, a fixed frame, a floating frame, a sliding rail and a spring, the fixed frame is welded on the chassis of the wing box assembly type frame, the floating frame is arranged on the fixed frame through the sliding rail and the spring, the X-direction wheel set and the Y-direction wheel set are arranged on the floating frame, and the X-direction wheel set and the Y-direction wheel set can respectively move along the X-direction ground; the profile frame positioning structure consists of a ball head structure, a ball socket structure and a lifting structure, the ball head structure and the lifting structure are arranged at one end of a chassis of the wing box general assembly profile frame, the ball socket structure is arranged on the ground at the lap joint position of an X-direction ground rail and a Y-direction ground rail, and after the wing box general assembly profile frame finishes X-direction movement, the profile frame is positioned by the profile frame positioning structure to finish the steering of the profile frame from the X direction to the Y direction; the tractor can be connected with the end and the middle of the wing box general assembly type frame chassis, and the movable wing box general assembly type frame is pulled to move along the X-direction ground rail and the Y-direction ground rail respectively.

2. The wing box assembly type frame transfer station structure of a large-scale aircraft according to claim 1, wherein the Y-direction wheel set is composed of a Y-direction lifting wheel, a servo motor, a locking structure and a sliding groove, the Y-direction lifting wheel is installed on the floating frame through the sliding groove, one end of the servo motor and the locking structure is installed on the floating frame, the other end of the servo motor and the locking structure is connected with the Y-direction lifting wheel, the servo motor drives the Y-direction lifting wheel to move along the sliding groove, and after the Y-direction lifting wheel is moved to a position, the Y-direction lifting wheel is locked.

3. The structure of claim 1, wherein the floating frame is a C-shaped structure, the sliding blocks of two parallel sliding rails are mounted on the floating frame, the rails of the sliding rails are mounted on the fixed frame, the springs are divided into two groups of four, one end of each group of springs is connected to the fixed frame, the other end of each group of springs is connected to the upper portion of the C-shaped portion of the floating frame, the other end of each group of springs is connected to the lower portion of the C-shaped portion of the floating frame, the springs are used for transferring the weight of the wing box assembly frame to the floating frame, the X-direction wheel set and the Y-direction wheel set, and the sliding rails are used for fine adjustment of the floating frame along the guide direction, so that the four groups of wheel set are in close contact with the steel ground rail and bear the.

4. A large-scale aircraft wing box final assembly type frame transfer method is characterized by comprising the following steps:

the first step is as follows: setting one end of an X-direction ground rail as a first station position, setting one end of a Y-direction ground rail as a second station position, initially placing a wing box assembly frame on the first station position, placing a Y-direction wheel set in a lifting state, and contacting the X-direction wheel set with the X-direction ground rail;

the second step is that: the tractor is connected with the end of the wing box general assembly type frame, and the wing box general assembly type frame is drawn to move along the ground rail in the X direction;

the third step: the wing box general assembly type frame moves to the lap joint of the X-direction ground rail and the Y-direction ground rail, the positioning structure of the type frame is operated, the lifting structure pushes the ball head structure to enter the ball socket structure, the ball head structure is tightly matched and aligned with the ball socket structure under the action of the pushing force of the lifting structure, the position of the wing box general assembly type frame is fixed, the Y-direction wheel set is lowered, the Y-direction wheel set is enabled to be in contact with the Y-direction ground rail, and the wing box general assembly type frame is continuously lifted until the X-direction wheel set is separated from the X-direction ground rail;

the fourth step: and the tractor is connected with the middle of the wing box general assembly type frame, the traction wing box general assembly type frame moves to the second station position along the ground rail in the Y direction, and the station transferring operation is completed.

Technical Field

The application relates to the technical field of large-scale aircraft wing box final assembly fixture transfer stations, in particular to a transfer station moving structure and a transfer station method for meeting the pulsating production requirement of a production line by a wing box final assembly fixture.

Background

In recent years, with the rapid advance of the development work of domestic large-scale military and civil transport machines, the main contradiction of the development of domestic multi-type large transport machines is gradually changed from the problem of 'research' to the problem of 'manufacture', how to rapidly increase the yield and realizing the breakthrough of the production capacity becomes the difficult point that aircraft manufacturing enterprises need to pay key attention to.

The aircraft wing box product has a large number of parts, large coordination difficulty in assembly and large number of hole-making rivets, and the assembly of the wing box is always a bottleneck problem which restricts the production period of the whole aircraft. At present, the general assembly type frame of the wing box of the domestic large transport is of a fixed structure, all processes need to complete work at the same station, pulsating production cannot be realized, and the requirement of yield improvement cannot be met.

Use length to be greater than 25 meters level wing box final assembly fixture as the research object, the fixture total weight exceeds 60 tons, and the current fixture of analysis removes structure and technique and can't satisfy the production line planning demand of pulsation, for example: firstly, the mould frame adopts a scheme that a common wheel set is dragged by a large tractor, the mould frame has large turning radius and large friction force of the common wheel set, and the required large tractor has large size and can not meet the requirement of a production line; secondly, the AGV moves, and needs to have lifting and moving functions, and due to the characteristics of an extra-heavy type and a narrow-width frame, the cost and the expense of the AGV are high, and potential safety hazards exist; and thirdly, the fixture is provided with a moving system, the increased structure size is large, and in order to ensure the stable movement, the part exceeding the framework of the fixture can not meet the requirements of the space size of stations such as hole making of a production line.

The research on a structure and a station transferring method for meeting the station transferring requirement of a pulsation production line of a large airplane wing box general assembly type frame needs to solve the problems of light and handy movement of an ultra-heavy type frame, small space steering of the ultra-large type frame and the moving safety of the ultra-long, ultra-high and small-width type frame aiming at the defects in the prior art.

Disclosure of Invention

In order to solve the problems, the invention provides a large airplane wing box general assembly type frame transfer station structure and a transfer station method, wherein a vertically crossed X-direction ground rail and a vertically crossed Y-direction ground rail are designed to be connected with a station I and a station II, an integrally designed wheel set structure comprises an X-direction wheel set and a Y-direction wheel set which are respectively used for moving the frame in the X direction and the Y direction, a Y-direction wheel set lifting structure is designed to realize the switching of the two direction wheel sets, the steering function of the frame is realized through the switching of the wheel sets, and in addition, a frame positioning structure is further arranged to ensure the safety of the switching of the wheel sets.

A large-scale aircraft wing box assembly type frame transfer station structure comprises a steel ground rail, a wheel set structure, an X-direction wheel set, a Y-direction wheel set, a type frame positioning structure and a tractor; the steel ground rail consists of an X-direction ground rail and a Y-direction ground rail, the X-direction ground rail and the Y-direction ground rail are arranged on the ground of the factory building, the X-direction ground rail consists of two parallel rails, and the distance between the rails is consistent with the width of the wing box general assembly type frame; the Y-direction ground rail is overlapped with the X-direction ground rail and is vertical to the X-direction ground rail, the Y-direction ground rail consists of four parallel rails, wherein the two outer rails are guiding ground rails, the distance between the rails is consistent with the length of the wing box general assembly frame, and the two inner rails are bearing ground rails; the wheel set structure is divided into four groups, eight in total, the wheel set structure is uniformly arranged along a chassis of the wing box assembly type frame, the wheel set structure interval is consistent with the Y-direction ground rail interval, each wheel set structure consists of an X-direction wheel set, a Y-direction wheel set, a fixed frame, a floating frame, a sliding rail and a spring, the fixed frame is welded on the chassis of the wing box assembly type frame, the floating frame is arranged on the fixed frame through the sliding rail and the spring, the X-direction wheel set and the Y-direction wheel set are arranged on the floating frame, and the X-direction wheel set and the Y-direction wheel set can respectively move along the X-direction ground; the profile frame positioning structure consists of a ball head structure, a ball socket structure and a lifting structure, the ball head structure and the lifting structure are arranged at one end of a chassis of the wing box general assembly profile frame, the ball socket structure is arranged on the ground at the lap joint position of an X-direction ground rail and a Y-direction ground rail, and after the wing box general assembly profile frame finishes X-direction movement, the profile frame is positioned by the profile frame positioning structure to finish the steering of the profile frame from the X direction to the Y direction; the tractor can be connected with the end and the middle of the wing box general assembly type frame chassis, and the movable wing box general assembly type frame is pulled to move along the X-direction ground rail and the Y-direction ground rail respectively.

The Y-direction wheel set is composed of a Y-direction lifting wheel, a servo motor, a locking structure and a sliding groove, the Y-direction lifting wheel is installed on the floating frame through the sliding groove, one end of the servo motor and one end of the locking structure are installed on the floating frame, the other end of the servo motor and the other end of the locking structure are connected with the Y-direction lifting wheel, the servo motor drives the Y-direction lifting wheel to move along the sliding groove, and the Y-direction lifting wheel is locked and fixed by the.

The floating frame is C type structure, the slider of two parallel slide rails is installed on the floating frame, the rail mounting of slide rail is on fixed frame, the spring divide into two sets ofly, totally four, the one end of two sets of springs is all connected on fixed frame, wherein the other end of a set of spring is connected on floating frame C type upper portion, the other end of a set of spring is connected in floating frame C type lower part, the spring is used for transmitting the weight of wing box assembly type frame to floating frame and X direction wheelset, Y direction wheelset is last, the slide rail is used for the floating frame to finely tune along the direction, in order to realize four group wheelset structures in close contact with steel ground rail, and on average bear weight.

A large-scale aircraft wing box final assembly type frame transfer method comprises the following steps:

the first step is as follows: setting one end of an X-direction ground rail as a first station position, setting one end of a Y-direction ground rail as a second station position, initially placing a wing box assembly frame on the first station position, placing a Y-direction wheel set in a lifting state, and contacting the X-direction wheel set with the X-direction ground rail;

the second step is that: the tractor is connected with the end of the wing box general assembly type frame, and the wing box general assembly type frame is drawn to move along the ground rail in the X direction;

the third step: the wing box general assembly type frame moves to the lap joint of the X-direction ground rail and the Y-direction ground rail, the positioning structure of the type frame is operated, the lifting structure pushes the ball head structure to enter the ball socket structure, the ball head structure is tightly matched and aligned with the ball socket structure under the action of the pushing force of the lifting structure, the position of the wing box general assembly type frame is fixed, the Y-direction wheel set is lowered, the Y-direction wheel set is enabled to be in contact with the Y-direction ground rail, and the wing box general assembly type frame is continuously lifted until the X-direction wheel set is separated from the X-direction ground rail;

the fourth step: and the tractor is connected with the middle of the wing box general assembly type frame, the traction wing box general assembly type frame moves to the second station position along the ground rail in the Y direction, and the station transferring operation is completed.

Has the advantages that: the large-scale wing box assembly type frame pulsation production line transfer station structure provided by the invention adopts the contact of the high-strength steel wheel and the shallow V-shaped groove high-strength steel ground rail paved in a buried manner, has extremely small maximum static friction coefficient under the lubricating condition, and solves the problem of large friction coefficient between the rubber caster and the ground; the wheel set structure with highly integrated design has the functions of moving in the X direction and the Y direction at the same time, vertical steering of the fixture is realized through switching of the wheel sets, the turning radius is not needed, the damage of the steel wheel set steering to the ground is avoided, and the potential safety hazard of steering is avoided; meanwhile, a fixture positioning structure is further arranged, and reliability of wheel set switching is guaranteed. The transfer station structure effectively reduces the difficulty and risk of transferring the large wing box type frame, can move by adopting a walking tractor with 20-ton traction force which is conventionally equipped in a factory building, has a compact structure, has the transfer station structure which exceeds the size of the frame by only about 0.6m, has small influence on other equipment of a pulsating production line such as large-scale hole making equipment, a large-scale moving platform and the like, and meets the integral integration requirement of the production line.

Drawings

FIG. 1 general schematic view of a wing box final assembly type frame transfer station

FIG. 2 schematic view of a wing box assembly jig

FIG. 3 is a partial schematic view of a wheel set structure

FIG. 4 is a schematic view of the X-direction wheel set and the Y-direction wheel set

The numbering in the figures illustrates: 1. a steel ground rail; 2. a wheel set structure; 3. an X-direction wheel set; 4. a Y-direction wheel set; 5. a fixture positioning structure; 6. a tractor; 7. an X-direction ground rail; 8. a Y-direction ground rail; 9. a fixed frame; 10. a floating frame; 11. a slide rail; 12. a spring, 13 and a ball head structure; 14. a ball and socket arrangement; 15. a lifting structure; 16. a Y-direction lifting wheel; 17. a servo motor; 18. a locking structure; 19. a chute; 20. a first station position; 21. a second station; 22. a wing box final assembly fixture chassis; 23. the X direction; 24. a Y direction; 25. the plant floor.

Detailed Description

Referring to fig. 1 to 4, a large airplane wing box general assembly type frame transfer station structure comprises a steel ground rail 1, a wheel set structure 2, an X-direction wheel set 3, a Y-direction wheel set 4, a type frame positioning structure 5 and a tractor 6; the steel ground rail 1 consists of an X-direction ground rail 7 and a Y-direction ground rail 8, the X-direction ground rail 7 and the Y-direction ground rail 8 are installed on the plant ground 25, the X-direction ground rail 7 consists of two parallel V-shaped groove rails, and the rail distance is consistent with the width of the wing box assembly type frame; the Y-direction ground rail 8 is lapped with the X-direction ground rail 7 and is vertical to the X-direction ground rail, the Y-direction ground rail 8 consists of four parallel rails, two of the four parallel rails are V-shaped groove guide ground rails, the distance between the two rails is consistent with the length of the wing box general assembly frame, and two of the two rails are bearing plane ground rails; wheel set structure 2 is divided into four groups, totally eight, evenly arrange along wing box assembly type frame chassis, 2 intervals of wheel set structure are unanimous with 8 intervals of Y direction ground rail, every wheel set structure 2 is by X direction wheelset 3, Y direction wheelset 4, fixed frame 9, floating frame 10, slide rail 11 and spring 12 are constituteed, fixed frame 9 welds on wing box assembly type frame chassis 22, floating frame 10 passes through slide rail 11 and spring 12 and installs on fixed frame 9, X direction wheelset 3 and Y direction wheelset 4 install on floating frame 10, X direction wheelset 3 and Y direction wheelset 4 can be respectively along X direction ground rail 7 and the removal of Y direction ground rail 8.

The Y-direction wheel set 4 is composed of a Y-direction lifting wheel 16, a servo motor 17, a locking structure 18 and a sliding groove 19, the Y-direction lifting wheel 16 is installed on the floating frame 10 through the sliding groove 19, one end of the servo motor 17 and one end of the locking structure 18 are installed on the floating frame 10, the other end of the servo motor 17 and the other end of the locking structure 18 are connected with the Y-direction lifting wheel 16, the servo motor 17 drives the Y-direction lifting wheel 16 to move along the sliding groove 19, and after the Y-direction lifting wheel is moved to a.

The fixture positioning structure 5 consists of a ball head structure 13, a ball socket structure 14 and a lifting structure 15, the ball head structure 13 and the lifting structure 15 are installed at one end of a wing box assembly fixture chassis 22, the ball socket structure 14 is installed on the ground at the lap joint position of an X-direction ground rail 7 and a Y-direction ground rail 8, after the wing box assembly fixture finishes the movement of the X direction 23, the fixture position is positioned through the fixture positioning structure 5, after the position is determined, a Y-direction lifting wheel 16 is positioned right above the Y-direction ground rail 8, the Y-direction lifting wheel 16 is lowered, the Y-direction lifting wheel 16 is contacted with the Y-direction ground rail 8 and then continuously lowered until the fixture is lifted, an X-direction wheel group 3 is separated from the X-direction ground rail 7, the Y-direction lifting wheel 16 is locked, and the fixture finishes the conversion from the X direction 23 to the Y direction 24; the tractor 6 can be connected with the end and the middle of a wing box assembly type frame chassis 22, and pulls and moves the wing box assembly type frame to move along an X-direction ground rail 7 and a Y-direction ground rail 8 respectively.

The floating frame 10 is a C-shaped structure, the sliding blocks of two parallel sliding rails 11 are installed on the floating frame 10, the rails of the sliding rails 11 are installed on the fixed frame 9, the springs 12 are divided into two groups, four groups in total, one end of each group of springs 12 is connected to the fixed frame 9, the other end of each group of springs 12 is connected to the C-shaped upper portion of the floating frame 10, the other end of each group of springs 12 is connected to the C-shaped lower portion of the floating frame 10, the springs 12 are used for transmitting the weight of the wing box assembly frame to the floating frame 10 and the X-direction wheel sets 3 and the Y-direction wheel sets 4, in the moving process, when the bearing force of the eight wheel set structures 2 is uneven, the floating frame 10 of the wheel set structure 2 can be finely adjusted along the guiding height of the sliding rails 11, so that the wheel set structures 2 are in close contact with the steel ground rails 1, the average bearing weight is realized, and the stress, the risk of deformation of the fixture is reduced.

A large-scale aircraft wing box final assembly type frame transfer method comprises the following steps:

the first step is as follows: one end of an X-direction ground rail 7 is set as a first station position 20, one end of a Y-direction ground rail 8 is set as a second station position 21, a wing box assembly frame is initially placed at the first station position 20, a Y-direction wheel set 4 is placed in a lifting state and separated from the Y-direction ground rail 8, and an X-direction wheel set 3 is in contact with the X-direction ground rail 7;

the second step is that: the tractor 6 is connected with the end of the wing box general assembly type frame, and the wing box general assembly type frame is pulled to move along the ground rail in the X direction 23;

the third step: the wing box general assembly type frame moves to the lap joint of an X-direction ground rail 7 and a Y-direction ground rail 8, a positioning structure 5 of the type frame is operated, a lifting structure 15 pushes a ball head structure 13 to enter a ball socket structure 14, the ball head structure 13 is in close fit alignment with the ball socket structure 14 under the action of the pushing force of the lifting structure 15, the position of the wing box general assembly type frame is fixed, a Y-direction lifting wheel 16 is lowered, the Y-direction lifting wheel 16 accurately enters a Y-direction ground rail V-shaped groove, the Y-direction lifting wheel 16 is continuously lowered, the type frame is continuously lifted until an X-direction wheel set 3 is separated from the X-direction ground rail 7, and the Y-direction lifting wheel 16 is locked;

the fourth step: and the tractor 6 is connected with the middle of the wing box general assembly type frame, the wing box general assembly type frame is pulled to move to the second station 21 along the ground rail in the Y direction 24, and the station transferring operation is completed.