Movable loose frame and skin positioning device for helicopter mid-fuselage

Abstract

The present invention discloses a movable loose frame and skin positioning device for a helicopter mid-fuselage, comprising: a left ground rail and a right ground rail; a left column and a right column; a left connecting rod and a right connecting rod; a mounting frame; a plurality of card plates, the plurality of card plates being arranged on the mounting frame at intervals along the left-right direction, the length direction of each card plate being oriented in the up-down direction; a plurality of loose frame positioning members, the loose frame positioning members being provided with loose frame connection structures suitable for detachably connecting to the helicopter fuselage loose frame, the loose frame positioning members being movably arranged on the card plates between an extended position and a retracted position; and a plurality of adsorption devices, the adsorption devices comprising an adsorption drive device, an adsorption member, a buffer member, and a force sensor, the adsorption drive device being arranged on the card plates, and the adsorption member being movably arranged on the adsorption drive device. The movable loose frame and skin positioning device for a helicopter mid-fuselage according to the embodiments of the present invention has the advantages of high assembly efficiency, small space occupation, and high assembly precision.

Description

Technical Field

[0001] The present invention relates to the technical field of aircraft manufacturing, in particular to a movable loose frame and skin positioning device for a helicopter mid-fuselage. Background Art

[0002] In an aircraft such as a helicopter, the assembly of the central fuselage includes at least the assembly of the loose frame and the skin.

[0003] In the related art, when assembling the loose frame and skin of the middle fuselage of a helicopter, the skin is positioned using a skin positioning tool, and the loose frame is positioned using a loose frame positioning tool. However, for positions on the fuselage where both the skin and the loose frame need to be installed, it is difficult to arrange the skin positioning tool and the loose frame positioning tool at the same time. If the two sets of tooling are arranged at different positions, the tooling needs to be moved frequently during the assembly process. On the one hand, additional operation processes are added, which reduces assembly efficiency. On the other hand, the space required for the assembly process is increased, so that the assembly process requires a larger site and increases additional costs. On the other hand, the transportation process easily leads to loss of assembly accuracy, affecting assembly quality. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a movable loose frame and skin positioning device for a helicopter mid-fuselage, which has the advantages of high assembly efficiency, small space occupation, and high assembly precision.

[0005] To achieve the above-mentioned purpose, according to an embodiment of the present invention, a movable loose frame and skin positioning device for the middle fuselage of a helicopter is proposed, wherein the movable loose frame and skin positioning device for the middle fuselage of the helicopter comprises: a left ground rail and a right ground rail, wherein the left ground rail and the right ground rail are arranged at intervals; a left upright and a right upright, wherein the left upright is slidably arranged on the left ground rail, and the right upright is slidably arranged on the right ground rail; a left connecting rod and a right connecting rod, wherein the rear end of the left connecting rod is connected to the left upright, and the rear end of the right connecting rod is connected to the right upright; a mounting frame, wherein the mounting frame is respectively connected to the front end of the left connecting rod and the front end of the right connecting rod; a plurality of card plates, wherein the plurality of card plates are arranged on the mounting frame at intervals along the left and right directions, and the length direction of each card plate is oriented along the up and down direction; a plurality of loose frame positioning members ... The loose frame positioning member is provided with a loose frame connection structure suitable for being detachably connected to the loose frame of the helicopter's fuselage, the loose frame positioning member is movably arranged on the card plate between an extended position and a retracted position, the loose frame positioning member extends forward from the front edge of the card plate in the extended position and is retracted to the rear of the front edge of the card plate in the retracted position; a plurality of adsorption devices, the adsorption device includes an adsorption drive device, an adsorption member, a buffer member and a force sensor, the adsorption drive device is arranged on the card plate, the adsorption member can be movably arranged on the adsorption drive device forward and backward, the adsorption member is suitable for adsorbing the fuselage skin of the helicopter, the buffer member is respectively connected to the adsorption member and the adsorption drive device, and the force sensor is arranged on the adsorption drive device and is suitable for detecting the force applied to the adsorption member.

[0006] The movable loose frame and skin positioning device for the helicopter mid-fuselage according to the embodiment of the present invention has the advantages of high assembly efficiency, small space occupation, high assembly precision, etc.

[0007] In addition, the helicopter mid-fuselage movable loose frame and skin positioning device according to the above embodiment of the present invention may also have the following additional technical features:

[0008] According to one embodiment of the present invention, the loose frame positioning member is rotatably provided on the clamping plate between the extended position and the retracted position.

[0009] According to one embodiment of the present invention, the clamping plate is in an arc shape with the middle portion bent backwards compared to the two ends.

[0010] According to one embodiment of the present invention, the width direction of the card plate is oriented along the front-rear direction and the thickness direction is oriented along the left-right direction.

[0011] According to one embodiment of the present invention, each of the card plates is provided with a plurality of loose frame positioning members spaced apart in the up-down direction and a plurality of adsorption devices spaced apart in the up-down direction.

[0012] According to one embodiment of the present invention, the installation frame is rectangular, there are two left connecting rods respectively connected to the upper and lower ends of the left edge of the installation frame, and there are two right connecting rods respectively connected to the upper and lower ends of the right edge of the installation frame.

[0013] According to one embodiment of the present invention, the left ground rail and the right ground rail are parallel to each other.

[0014] According to one embodiment of the present invention, the adsorption drive device is an electric push rod.

[0015] According to an embodiment of the present invention, the loose frame connection structure is a screw through hole, and the loose frame positioning piece is adapted to be detachably connected to the body loose frame via a threaded fastener engaged in the screw through hole.

[0016] According to one embodiment of the present invention, the adsorption member is a suction cup.

[0017] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0019] Figure 1 The figure is a schematic structural diagram of a movable loose frame and skin positioning device for a helicopter mid-fuselage according to an embodiment of the present invention.

[0020] Figure 2 The figure is a partial structural diagram of a movable loose frame and skin positioning device for a helicopter mid-fuselage according to an embodiment of the present invention.

[0021] Figure 3 1 is a schematic structural diagram of an adsorption device for a movable loose frame and skin positioning device for a helicopter mid-fuselage according to an embodiment of the present invention.

[0022] Figure 1: Movable loose frame and skin positioning device for helicopter mid-fuselage 1, left ground rail 11, right ground rail 12, left column 21, right column 22, left connecting rod 31, right connecting rod 32, mounting frame 40, clamping plate 50, loose frame positioning member 60, loose frame connecting structure 61, adsorption device 70, adsorption drive device 71, adsorption member 72, buffer member 73, force sensor 74. DETAILED DESCRIPTION

[0023] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0025] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0026] The following describes a movable loose frame and skin positioning device 1 for a helicopter mid-fuselage according to an embodiment of the present invention with reference to the accompanying drawings.

[0027] like Figure 1-Figure 3 As shown, the movable loose frame and skin positioning device 1 for the mid-fuselage of a helicopter according to an embodiment of the present invention includes a left ground rail 11, a right ground rail 12, a left column 21, a right column 22, a left connecting rod 31, a right connecting rod 32, a mounting frame 40, a plurality of clamping plates 50, a plurality of loose frame positioning members 60 and a plurality of adsorption devices 70.

[0028] The left and right floor rails 11 and 12 are spaced apart (left-right, up-down, and front-back directions are indicated by the arrows in the figure). The left upright post 21 is slidably mounted on the left floor rail 11, and the right upright post 22 is slidably mounted on the right floor rail 12. The rear end of the left connecting rod 31 is connected to the left upright post 21, and the rear end of the right connecting rod 32 is connected to the right upright post 22. The mounting frame 40 is connected to the front ends of the left and right connecting rods 31 and 32, respectively.

[0029] A plurality of card plates 50 are disposed on the mounting frame 40 at intervals along the left-right direction, and a length direction of each card plate 50 is oriented along the up-down direction.

[0030] The loose frame positioning member 60 is provided with a loose frame connection structure 61 adapted to be detachably connected to the loose frame of the helicopter fuselage. The loose frame positioning member 60 is movably mounted on the clamping plate 50 between an extended position and a retracted position. In the extended position, the loose frame positioning member 60 extends forward from the front edge of the clamping plate 50, and in the retracted position, it retracts to the rear of the front edge of the clamping plate 50. It should be understood that "movable" includes both slidable and rotatable.

[0031] The adsorption device 70 includes an adsorption drive device 71, an adsorption component 72, a buffer component 73 and a force sensor 74. The adsorption drive device 71 is arranged on the card plate 50, and the adsorption component 72 is arranged on the adsorption drive device 71 so as to be movable forward and backward. The adsorption component 72 is suitable for adsorbing the fuselage skin of the helicopter. The buffer component 73 is respectively connected to the adsorption component 72 and the adsorption drive device 71. The force sensor 74 is arranged on the adsorption drive device 71 and is suitable for detecting the force applied to the adsorption component 72.

[0032] Reference below Figure 1-Figure 3 The working process of the movable loose frame and skin positioning device 1 for the helicopter mid-fuselage according to the embodiment of the present invention is described.

[0033] First, move the loose frame positioning member 60 to the extended position, install the loose frame on the loose frame positioning member 60, and use the loose frame positioning member 60 to position the loose frame. Use the left ground rail 11 and the right ground rail 12 to make the loose frame close to the installation position of the loose frame on the fuselage. Complete the installation of the loose frame under the positioning of the loose frame positioning member 60. Rotate the loose frame positioning member 60 to the retracted position, use the adsorption device 70 to adsorb the skin, and complete the installation of the skin under the positioning of the adsorption device 70. Finally, use the left ground rail 11 and the right ground rail 12 to make the installation frame 40 away from the fuselage to facilitate the subsequent hole making process.

[0034] According to the movable loose frame and skin positioning device 1 for the mid-fuselage of a helicopter according to an embodiment of the present invention, by providing a left ground rail 11 and a right ground rail 12, the left ground rail 11 and the right ground rail 12 can be used to realize the forward and backward movement of the left column 21 and the right column 22, thereby driving the installation frame 40 and the loose frame positioning member 60 and the adsorption device 70 thereon to move forward and backward. On the one hand, the forward and backward position adjustment of the loose frame positioning member 60 and the adsorption device 70 can be realized, and the digital position adjustment of the loose frame and the skin can be realized. On the other hand, after the installation of the loose frame and the skin is completed, the left ground rail 11 and the right ground rail 12 can be used to move the installation frame 40 to a position away from the helicopter fuselage to provide space for the subsequent hole making process.

[0035] By providing the left connecting rod 31 and the right connecting rod 32 , an operating space can be reserved at the rear of the installation frame 40 , making it easier for operators to install the loose frame and the skin in the installation frame 40 .

[0036] By providing the installation frame 40 , it is possible to facilitate the arrangement of the clamping plate 50 , the loose frame positioning member 60 and the adsorption device 70 .

[0037] By providing the clamping plate 50 , not only can the arrangement of the loose frame positioning member 60 and the adsorption device 70 be facilitated, but the clamping plate 50 can also be used to assist in shaping the skin.

[0038] In addition, the frame structure using columns, connecting rods, mounting frames and card plates can facilitate the formation of an open structure and reduce interference with the loose frame and skin assembly process.

[0039] By providing the loose frame positioning member 60 , the loose frame can be detachably mounted on the loose frame positioning member 60 during assembly of the loose frame so as to be positioned by the loose frame positioning member 60 , and then the installation of the loose frame is completed under the positioning action of the loose frame positioning member 60 .

[0040] By making the loose frame positioning member 60 movable between the extended position and the retracted position, during the assembly process, the loose frame positioning member 60 can be first moved to the extended position, the loose frame can be installed on the loose frame positioning member 60, and the installation of the loose frame on the fuselage can be completed under the positioning of the loose frame positioning member 60. Thereafter, the loose frame positioning member 60 can be moved to the retracted position so that the loose frame positioning member 60 avoids the skin, thereby preventing the loose frame positioning member 60 from interfering with the adsorption of the skin by the adsorption device 70.

[0041] By providing the adsorption device 70 , when assembling the skin, the adsorption member 72 of the adsorption device 70 can be used to adsorb the skin to achieve positioning of the skin, and then the installation of the skin can be completed under the positioning effect of the adsorption device 70 .

[0042] By providing the buffer member 73 , the adsorption member 72 can be buffered to prevent the adsorption member 72 from excessively squeezing the skin and causing deformation of the skin.

[0043] By setting up a force sensor 74, the force sensor 74 can be used to detect the force on the adsorption part 72, so as to control the force of the adsorption drive device 71 according to the detection result of the force sensor 74, thereby ensuring that the adsorption part 72 is reliably adsorbed while avoiding excessive squeezing of the skin to cause deformation of the skin.

[0044] That is to say, the movable loose frame and skin positioning device 1 of the helicopter mid-fuselage has the function of positioning the loose frame and the skin at the same time, and will not interfere with each other. Compared with the technical solution in the related art in which independent positioning tooling is provided for the loose frame and the skin respectively, there is no need for frequent movement. On the one hand, it can reduce the operation process and improve the assembly efficiency. On the other hand, it can improve the space utilization rate and reduce the site occupation, thereby reducing the cost. On the other hand, it can reduce the accuracy loss caused by transportation and improve the assembly accuracy.

[0045] Therefore, the helicopter mid-fuselage movable frame and skin positioning device 1 according to the embodiment of the present invention has the advantages of high assembly efficiency, small occupied space, high assembly precision, etc.

[0046] The following describes a movable loose frame and skin positioning device 1 for a helicopter mid-fuselage according to a specific embodiment of the present invention with reference to the accompanying drawings.

[0047] In some specific embodiments of the present invention, Figure 1-Figure 3 As shown, the movable loose frame and skin positioning device 1 for the mid-fuselage of a helicopter according to an embodiment of the present invention includes a left ground rail 11, a right ground rail 12, a left column 21, a right column 22, a left connecting rod 31, a right connecting rod 32, a mounting frame 40, a plurality of clamping plates 50, a plurality of loose frame positioning members 60 and a plurality of adsorption devices 70.

[0048] Specifically, if Figure 2 As shown, the loose frame positioning member 60 is rotatably provided on the card plate 50 between the extended position and the retracted position. Compared with the technical solution in which the loose frame positioning member 60 slides back and forth, the loose frame positioning member 60 can be more convenient for positioning the loose frame.

[0049] Advantageously, as Figure 1 and Figure 2 As shown, the card plate 50 is in an arc shape with its middle portion bent backwards compared to both ends, so that the card plate 50 and the loose frame positioning member 60 and the adsorption device 70 on the card plate 50 can be easily adapted to the arc-shaped fuselage structure.

[0050] More advantageously, if Figure 1 and Figure 2 As shown, the width direction of the cardboard 50 is oriented in the front-to-back direction, and the thickness direction is oriented in the left-to-right direction. Specifically, the loose frame positioning member 60 and the suction device 70 can be installed on one side of the thickness direction of the cardboard 50. This facilitates the installation of the loose frame positioning member 60 and the suction device 70 on the cardboard 50.

[0051] Furthermore, if Figure 1 and Figure 2As shown, each clamping plate 50 is provided with a plurality of loose frame positioning members 60 spaced apart in the vertical direction and a plurality of suction devices 70 spaced apart in the vertical direction. In this way, the loose frame can be positioned using the plurality of loose frame positioning members 60, facilitating positioning of the plurality of loose frames, while the plurality of suction devices 70 can be used to position the skin, thereby ensuring a more uniform force on the skin and preventing deformation of the skin.

[0052] More specifically, if Figure 1 and Figure 2 As shown, the mounting frame 40 is rectangular, with two left connecting rods 31 connected to the upper and lower ends of the left edge of the mounting frame 40, and two right connecting rods 32 connected to the upper and lower ends of the right edge of the mounting frame 40. This can make the force applied to the mounting frame 40 more uniform, improve the stability of the mounting frame 40 and the loose frame positioning member 60 and the adsorption device 70 on the mounting frame 40, and thus improve the stability of the positioned loose frame and the skin.

[0053] Alternatively, as Figure 1 As shown, the left ground rail 11 and the right ground rail 12 are parallel to each other. This makes it easy for the left ground rail 11 and the right ground rail 12 to drive the rest of the structure to move.

[0054] Furthermore, if Figure 3 As shown, the adsorption drive device 71 is an electric push rod. This can facilitate the drive of the adsorption member 72 to move back and forth.

[0055] Furthermore, if Figure 2 As shown, the loose frame connection structure 61 is a screw through hole, and the loose frame positioning member 60 is suitable for being detachably connected to the loose frame of the fuselage through a threaded fastener engaged in the screw through hole. This can facilitate the detachable connection between the loose frame positioning member 60 and the loose frame, and can also facilitate improving the stability of the loose frame.

[0056] Furthermore, if Figure 2 and Figure 3 As shown, the adsorption member 72 is a suction cup. This makes it easy to adsorb the skin.

[0057] Specifically, each of the left and right ground rails 11 and 12 comprises a base, a guide rail, a slider, a drive motor, a ball screw, and a scale. The guide rail is mounted on the base, and the slider is slidably mounted on the guide rail. The drive motor is connected to the ball screw, which threads into the slider to convert rotation into sliding motion. The scale measures the slider's position. The base can be cast to ensure load-bearing capacity and stability. This allows the ground rail to easily drive the movement of other structures mounted on it.

[0058] A plurality of process holes spaced apart in the vertical direction are provided on the left column 21 and the right column 22. This can improve the column rigidity and reduce the column weight.

[0059] The buffer member 73 can be a spring, which can facilitate buffering the force applied to the adsorption member 72.

[0060] Other structures and operations of the movable loose frame and skin positioning device 1 for the helicopter mid-fuselage according to the embodiment of the present invention are well known to those skilled in the art and will not be described in detail here.

[0061] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0062] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A movable loose frame and skin positioning device for the middle fuselage of a helicopter, characterized in that: include: A left ground rail and a right ground rail, wherein the left ground rail and the right ground rail are spaced apart; a left upright post and a right upright post, wherein the left upright post is slidably disposed on the left ground rail, and the right upright post is slidably disposed on the right ground rail; A left connecting rod and a right connecting rod, wherein the rear end of the left connecting rod is connected to the left upright column, and the rear end of the right connecting rod is connected to the right upright column; a mounting frame connected to a front end of the left connecting rod and a front end of the right connecting rod respectively; A plurality of card plates, wherein the plurality of card plates are spaced apart on the mounting frame along the left-right direction, and the length direction of each card plate is oriented along the up-down direction; a plurality of loose frame positioning members, each of which is provided with a loose frame connection structure suitable for detachably connecting to a loose frame of a helicopter fuselage, the loose frame positioning members being movably arranged on the card plate between an extended position and a retracted position, the loose frame positioning members extending forward from a front edge of the card plate in the extended position and retracted to the rear of the front edge of the card plate in the retracted position; Multiple adsorption devices, the adsorption devices include an adsorption drive device, an adsorption member, a buffer member and a force sensor, the adsorption drive device is arranged on the card plate, the adsorption member is arranged on the adsorption drive device so as to be movable forward and backward, the adsorption member is suitable for adsorbing the fuselage skin of a helicopter, the buffer member is respectively connected to the adsorption member and the adsorption drive device, and the force sensor is arranged on the adsorption drive device and is suitable for detecting the force applied to the adsorption member.

2. The helicopter mid-body movable loose frame and skin positioning device according to claim 1, characterized in that: The loose frame positioning member is rotatably arranged on the clamping plate between the extended position and the retracted position.

3. The helicopter mid-body movable loose frame and skin positioning device according to claim 1, characterized in that: The clamping plate is in an arc shape with the middle portion bent backwards compared to the two ends.

4. The helicopter mid-body movable loose frame and skin positioning device according to claim 1, characterized in that: The width direction of the card plate is oriented in the front-rear direction and the thickness direction is oriented in the left-right direction.

5. The helicopter mid-fuselage movable frame and skin positioning device according to claim 1, characterized in that: Each of the card plates is provided with a plurality of loose frame positioning members spaced apart in the up-down direction and a plurality of adsorption devices spaced apart in the up-down direction.

6. The helicopter mid-fuselage movable frame and skin positioning device according to claim 1, characterized in that: The installation frame is rectangular, the two left connecting rods are respectively connected to the upper and lower ends of the left edge of the installation frame, and the two right connecting rods are respectively connected to the upper and lower ends of the right edge of the installation frame.

7. The helicopter mid-fuselage movable frame and skin positioning device according to claim 1, characterized in that: The left ground rail and the right ground rail are parallel to each other.

8. The helicopter mid-fuselage movable frame and skin positioning device according to claim 1, characterized in that: The adsorption drive device is an electric push rod.

9. The helicopter mid-fuselage movable frame and skin positioning device according to claim 1, characterized in that: The loose frame connection structure is a screw through hole, and the loose frame positioning piece is suitable for being detachably connected to the body loose frame through a threaded fastener fitted in the screw through hole.

10. The helicopter mid-fuselage movable frame and skin positioning device according to claim 1, characterized in that: The adsorption component is a suction cup.

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