CN219237391U

CN219237391U - Helicopter front fuselage repairing and positioning tool

Info

Publication number: CN219237391U
Application number: CN202320932904.2U
Authority: CN
Inventors: 姜峰; 董宝君; 李青松; 王进成; 瞿德锋; 孟宪立; 肖明杰; 王思堉
Original assignee: Chengdu Guoying Jinjiang Machine Factory
Current assignee: Chengdu Guoying Jinjiang Machine Factory
Priority date: 2023-04-23
Filing date: 2023-04-23
Publication date: 2023-06-23
Anticipated expiration: 2033-04-23

Abstract

The utility model belongs to the technical field of helicopter maintenance equipment, and particularly relates to a helicopter front fuselage repair positioning tool, which comprises a bulkhead positioning clamping plate, a plurality of bulkhead positioning clamping plates and a plurality of positioning clamping plates, wherein the bulkhead positioning clamping plates are transversely arranged on an installation platform and are provided with arc clamping grooves which are matched with the appearance of a fuselage; the bottom ends of two sides of the bulkhead positioning clamping plate are provided with adjusting devices for adjusting the heights of the bulkhead positioning clamping plates; one side of the mounting platform is provided with a bulkhead fixing plate, and the bulkhead fixing plate is provided with mounting holes corresponding to the mounting bolts of the machine body. The tool can be disassembled and assembled under the conditions of serious damage and deformation of the front machine body, can be normally checked and maintained, can finish the work such as repair and level measurement, and can be used for deep repair and structure positioning of the front machine body.

Description

Helicopter front fuselage repairing and positioning tool

Technical Field

The utility model belongs to the technical field of helicopter maintenance equipment, and particularly relates to a helicopter front fuselage repairing and positioning tool.

Background

Helicopters are widely used in units of military, civil aviation, navigation and the like in China. Aiming at the repair of serious damage, deformation and corrosion of the front fuselage of the helicopter, a corresponding repair special tool is not available at present.

In the helicopter front fuselage repairing process, the front fuselage can be generally not disassembled when a small fault occurs by means of the middle fuselage bracket, and the front fuselage needs to be positioned and clamped when a front fuselage bulkhead or a skin with a large area deforms. In the prior art, the front airframe repair is only carried out under the condition that the front middle airframe is not disassembled, and the front airframe with serious damage and deformation cannot be repaired, horizontally measured and the like by means of the normal inspection and maintenance of the middle airframe bracket of the helicopter.

1. The positioning function of a main bearing member of the front fuselage of the helicopter is lacked;

2. the conditions of damage, corrosion and the like of the large-area skin outside the front fuselage can not be repaired by means of the middle fuselage bracket;

3. the positioning of the mounting holes cannot be performed on the decomposed front body.

With the increasing of fault conditions of helicopter use and training, how to carry out deep repair and structure positioning becomes a technical problem to be solved by army use and navigation repair enterprises.

Disclosure of Invention

Aiming at the technical problems in the background technology, the utility model provides a helicopter front fuselage repairing and positioning tool.

In order to achieve the above purpose, the technical scheme provided by the utility model is as follows:

the helicopter front fuselage repairing and positioning tool comprises a bulkhead positioning clamping plate, a plurality of bulkhead positioning clamping plates and a plurality of positioning and positioning devices, wherein the bulkhead positioning clamping plates are transversely arranged on an installation platform, and arc clamping grooves matched with the appearance of a helicopter body are formed in the bulkhead positioning clamping plates; the bottom ends of two sides of the bulkhead positioning clamping plate are provided with adjusting devices for adjusting the heights of the bulkhead positioning clamping plates; one side of the mounting platform is provided with a bulkhead fixing plate, and the bulkhead fixing plate is provided with mounting holes corresponding to the mounting bolts of the machine body.

Optionally, a weight-reducing groove is arranged in the bulkhead fixing plate.

Optionally, a rectangular installation frame is arranged on the installation platform, the bulkhead positioning clamping plate is fixed at the bottom end of the installation frame, and the bulkhead fixing plate is fixed at the side edge of the installation frame.

Optionally, the bulkhead fixed plate is detachably fixed on the cross beam, and two ends of the cross beam are provided with fixing parts.

Optionally, adjusting device includes base, lead screw, screw nut and drive wheel, be provided with the lead screw on the base, the cooperation is connected with screw nut on the lead screw, and screw nut outside is integrative to be provided with the drive wheel, drive wheel upper end is integrative to be provided with the guide part, the outer wall of guide part is fixed with the bearing, the bearing is fixed in the hole of fixed part.

Optionally, the upper end of the screw rod is a smooth guide rod section, and the guide rod section is in sliding arrangement close to the inner wall of the guide part.

Optionally, the driving wheel is a chain wheel or a belt wheel.

Optionally, each driving wheel is connected with a driving motor for driving.

Optionally, the plurality of driving wheels are connected and driven by a group of chain assemblies/belt assemblies, wherein one driving wheel is connected and driven by a driving motor.

The utility model has the following advantages and beneficial effects:

according to the tooling for the helicopter front fuselage, the front fuselage is mounted on the bulkhead positioning clamping plate with adjustable height, and the bulkhead fixing plate is provided with the mounting holes corresponding to the fuselage mounting bolts, so that the front fuselage is laterally fixed. By means of the design, the front machine body can be detached and installed under the conditions of serious damage and deformation, normal inspection and maintenance are carried out, repair, level measurement and other works are completed, and the front machine body can be deeply repaired and structurally positioned.

Drawings

FIG. 1 is a block diagram of a helicopter forebody repair positioning tool provided by the utility model;

FIG. 2 is a front view of a bulkhead positioning card of the present utility model;

FIG. 3 is an enlarged view of a portion of FIG. 2 at a;

FIG. 4 is a schematic illustration of the connection of a plurality of drive wheels and chain assemblies provided by the present utility model;

FIG. 5 is a schematic illustration of a single drive wheel and pull cord assembly connection provided by the present utility model;

icon: 1-spacer positioning clamping plate I, 11-arc-shaped clamping grooves, 12-clamping plates, 13-locking screws, 14-cross beams, 15-fixing parts, 2-spacer positioning clamping plate II, 3-spacer positioning clamping plate III, 4-adjusting devices, 41-screw rods, 411-guide rod sections, 42-screw nuts, 43-driving wheels, 431-gear teeth/wheel grooves, 432-limiting parts, 433-guiding parts, 44-bearings, 45-chain components/belt components, 46-driving motors, 47-stay rope components, 5-frames, 6-spacer fixing plates, 61-weight reduction grooves, 62-mounting holes, 7-mounting platforms, 8-side rails and 9-ladders.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples

As shown in figure 1, the helicopter front fuselage repairing and positioning tool comprises a mounting platform 7, wherein the mounting platform 7 has a certain height, a ladder 9 is arranged on one side of the mounting platform 7, and side rails 8 are arranged around the mounting platform 7. The inner side of the mounting platform 7 is hollow, a rectangular frame 5 is arranged on the inner side, and a first bulkhead positioning clamping plate 1, a second bulkhead positioning clamping plate 2 and a third bulkhead positioning clamping plate 3 are transversely arranged at the bottom end of the rectangular frame 5; the back side of the rectangular frame 5 (i.e. the side of the bulkhead positioning clamping plate three 3) is provided with a bulkhead fixing plate 6.

As shown in fig. 1 and 2, arc-shaped clamping grooves 11 which are matched with the shape of the front machine body are formed in the first bulkhead positioning clamping plate 1, the second bulkhead positioning clamping plate 2 and the third bulkhead positioning clamping plate 3; the bottom ends of the two sides of the first bulkhead positioning clamping plate 1, the second bulkhead positioning clamping plate 2 and the third bulkhead positioning clamping plate 3 are provided with an adjusting device 4 for adjusting the height of the bulkhead positioning clamping plate.

When the shape and the size of the arc-shaped clamping groove 11 are designed, a handheld self-positioning scanner is used for carrying out three-dimensional scanning point cloud data on the front frame beam of the helicopter, particularly, the

front frames

2, 3, 4 and 5 are scanned, and the positioning tool of the design frame is convenient.

And then, CATIA software is used for processing three-dimensional scanned data, and a positioning and repairing tool is designed by using CATIA part design, assembly design, curved surface design, reverse engineering and other modules, and is used for positioning main bearing components such as the

front fuselage

2, 3, 4, 5 and the like.

As shown in fig. 1, the bulkhead fixing plate 6 is provided with a semicircular weight-reducing groove 61, and a plurality of mounting holes 62 corresponding to the fuselage mounting bolts are provided on the outer side of the weight-reducing groove 61.

As shown in fig. 2, the first spacer positioning clamping plate 1, the second spacer positioning clamping plate 2 and the third spacer positioning clamping plate 3 are detachably fixed on the cross beam 14, the cross beam 14 is provided with clamping plates 12, the spacer fixing plates 6 are arranged between the clamping plates 12 and are fixed through locking screws 13, two ends of the cross beam 14 are provided with fixing parts 15, and the fixing parts 15 are connected with the adjusting device 4.

As shown in fig. 2 and 3, the adjusting device 4 is used for adjusting the height, as a preferred mode in the utility model, the adjusting device 4 comprises a screw rod 41, a screw rod nut 42 and a driving wheel 43, the screw rod 41 is connected with the bottom end of the rectangular frame 5 in a threaded manner, the screw rod 41 is connected with the screw rod nut 42 in a matched manner, the driving wheel 43 is integrally connected with the outer side of the screw rod nut 42, the upper end of the driving wheel 43 is integrally provided with a guiding part 433, the outer wall of the guiding part 433 is fixedly provided with a bearing 44, and the bearing 44 is fixed in an inner hole of the fixing part 15. The upper end of the screw rod 41 is a smooth guide rod section 411, and the guide rod section 411 is closely attached to the inner wall of the guide part 433 in a sliding manner. When the driving wheel 43 is driven to rotate, the screw nut 42 is driven to rotate and lift, so that the fixing part 15, the cross beam 14 and the spacer positioning clamping plate are driven to lift, and the height adjustment is realized. In the utility model, the screw nut 42 is a screw nut with a self-locking function.

When the driving wheel 43 rotates to drive the screw nut 42 to rotate, the screw nut 42 performs lifting movement, the outer wall of the guiding part 433 rotates closely to the bearing 44, and the inner wall rotates closely to the guide rod section 411, thereby lifting/lowering the fixing part 15.

The driving wheel 43 is provided with a gear tooth/wheel groove 431, and two sides of the gear tooth/wheel groove 431 are provided with limiting parts 432, so that when the chain component/belt component 45 is arranged in the gear tooth/wheel groove 431, the chain component/belt component can be limited through the limiting parts 432, and can be prevented from falling off.

Further, the driving wheel 43 is a sprocket or a pulley.

As a preferred mode of the present utility model, each driving wheel 43 is separately connected and driven by a driving motor 46, so as to automatically control the rotation and lifting of the screw nut 42.

As shown in fig. 4, as another preferred mode of the present utility model, a plurality of driving wheels 43 are connected and driven by a set of chain assemblies/belt assemblies 45, wherein one driving wheel 43 is connected and driven by a driving motor 46, so that all screw nuts 42 are driven by one motor to rotate and lift, and synchronous adjustment of the height is realized, and time and labor are saved.

As shown in fig. 5, in the present utility model, if the screw nut 42 is to be manually rotated, the pull rope assembly 47 is used, the drive wheel 43 is wound around, and the pull rope assembly 47 is pulled to rotate the screw nut 42.

Tool use principle:

when the fixture is installed, the heights of the first bulkhead positioning clamping plate 1, the second bulkhead positioning clamping plate 2 and the third bulkhead positioning clamping plate 3 are approximately positioned, and the adjusting device 4 is used for adjusting the fine height.

The front machine body is arranged on the first bulkhead positioning clamping plate 1, the second bulkhead positioning clamping plate 2 and the third bulkhead positioning clamping plate 3, and the other side is close to the bulkhead fixing plate 6. Then the height of the frame is finely adjusted by the adjusting device 4, so that the mounting holes 62 on the bulkhead fixing plate 6 correspond to the frame mounting bolts, and the front frame is fixedly connected with the bulkhead fixing plate 6.

The tooling disclosed by the utility model aims at repairing the front fuselage of the helicopter with serious damage, deformation and corrosion, ensures the positioning of the front fuselage of the helicopter in the tooling, monitors the horizontal state at any time in the repairing process, and ensures that the front fuselage of the helicopter has normal pneumatic appearance and structural strength after being repaired in the tooling.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. Positioning frock is restoreed to helicopter front fuselage, its characterized in that includes:

the bulkhead positioning clamping plates are transversely arranged on the mounting platform, and arc clamping grooves matched with the appearance of the machine body are formed in the bulkhead positioning clamping plates;

the bottom ends of two sides of the bulkhead positioning clamping plate are provided with adjusting devices for adjusting the heights of the bulkhead positioning clamping plates;

one side of the mounting platform is provided with a bulkhead fixing plate, and the bulkhead fixing plate is provided with mounting holes corresponding to the mounting bolts of the machine body.

2. The helicopter forebody repair positioning tooling of claim 1, wherein: and a weight reduction groove is formed in the bulkhead fixing plate.

3. The helicopter forebody repair positioning tooling of claim 1, wherein: the mounting platform is provided with a rectangular mounting frame, the bulkhead positioning clamping plates are fixed at the bottom end of the mounting frame, and the bulkhead fixing plates are fixed at the side edges of the mounting frame.

4. The helicopter forebody repair positioning tooling of claim 1, wherein: the bulkhead fixed plate is detachably fixed on the cross beam, and fixing parts are arranged at two ends of the cross beam.

5. The helicopter forebody repair positioning tooling of claim 4, wherein: the adjusting device comprises a base, a screw rod nut and a driving wheel, wherein the screw rod is arranged on the base, the screw rod is connected with the screw rod nut in a matched mode, the driving wheel is integrally arranged on the outer side of the screw rod nut, a guide part is integrally arranged at the upper end of the driving wheel, a bearing is fixed on the outer wall of the guide part, and the bearing is fixed in an inner hole of the fixing part.

6. The helicopter forebody repair positioning tooling of claim 5, wherein: the upper end of the screw rod is a smooth guide rod section, and the guide rod section is tightly attached to the inner wall of the guide part in a sliding manner.

7. The helicopter forebody repair positioning tooling of claim 5, wherein: the driving wheel is a chain wheel or a belt wheel.

8. The helicopter forebody repair positioning tooling of claim 5, wherein: each driving wheel is connected with a driving motor for transmission.

9. The helicopter forebody repair positioning tooling of claim 5, wherein: the plurality of driving wheels are connected and driven through a group of chain components/belt components, and one driving wheel is connected and driven with the driving motor.