Skin centering tool

Abstract

The utility model discloses a skin centering tool, which belongs to the technical field of aviation equipment and comprises a group of theodolite brackets, a group of front reference brackets, a first mounting bracket, a second mounting bracket and a group of rear reference brackets, the theodolite support is hoisted on the inner side of the forefront existing skin, the front reference support is hoisted on the inner side of the existing skin in front of the newly-installed skin, the theodolite is horizontally fixed to the adjusting mechanism, and the position of the theodolite can be adjusted in the horizontal direction through the adjusting mechanism; and center line scales are engraved on the center lines of skins at corresponding hoisting positions of the bracket cross beams of the front and rear reference brackets and the first and second mounting brackets. The device is simple in structure and convenient to use, whether the installation of the newly-installed skin deviates or not is judged by comparing the center scale of the installation support on the newly-installed skin with the center scale of the reference support on the existing skin through the theodolite, the installation position of the newly-installed skin is adjusted according to the offset distance of the theodolite, and the installation accuracy of the newly-installed skin is improved. And the new skin is aligned with the existing skin of the airplane after being mounted.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of aviation equipment, and particularly relates to a skin centering tool for aligning new and old skins during aircraft modification. BACKGROUND

[0002] During aircraft passenger-to-cargo conversion, the upper skin needs to be cut and new skin installed, and currently there is no tool to ensure that the newly installed skin is aligned with the existing skin of the aircraft after installation, which requires manual measurement using measuring tools, greatly increasing the difficulty of work and lacking precision in measurement. SUMMARY

[0003] The utility model solves the technical problem of providing a skin centering tool that can simply and easily ensure that the newly installed skin is aligned with the existing skin of the aircraft.

[0004] The utility model solves the technical problem by the following scheme: a skin centering tool is installed on the upper skin of an aircraft, comprising a set of theodolite supports, a set of front reference supports, first and second installation supports, and a set of rear reference supports.

[0005] The theodolite support comprises a theodolite support beam, theodolite support triangular mounting plates, left and right diagonal struts, an adjustment mechanism, and a theodolite, the two ends of the theodolite support beam are horizontally installed on the horizontal bottom edges of the left and right theodolite support triangular mounting plates, the apexes of the left and right theodolite support triangular mounting plates are respectively hinged to the skin, the top ends of the left and right diagonal struts are respectively fixed to the skin, the middle parts are respectively hinged to the theodolite support beam, the adjustment mechanism is horizontally hinged to the bottom ends of the left and right diagonal struts, the theodolite is horizontally fixed to the adjustment mechanism, and the position of the theodolite can be adjusted in the horizontal direction through the adjustment mechanism.

[0006] The front and rear reference supports and the first and second installation supports each comprise front and rear reference support beams, first and second installation support beams, front and rear reference support left and right triangular mounting plates, and first and second installation support left and right triangular mounting plates, the two ends of the first and second installation support beams are horizontally installed on the horizontal bottom edges of the first and second installation support left and right triangular mounting plates, the apexes of the first and second installation support left and right triangular mounting plates are respectively hinged to the skin, the horizontal bottom edges of the front and rear reference support left and right triangular mounting plates and the first and second installation support left and right triangular mounting plates are the same in size, the apexes are different in height, and the centerline of the skin at the corresponding hoisting position of the front and rear reference support beams and the first and second installation support beams is marked with a centerline scale.

[0007] The theodolite support is hung in the inner side of the existing skin at the frontmost position, the front reference support is hung in the inner side of the existing skin in front of the newly-installed skin, the first and second installation supports are hung in the inner side of the newly-installed skin from front to back respectively, and the rear reference support is hung in the inner side of the existing skin behind the newly-installed skin.

[0008] On the basis of the above scheme, the vertices of the left and right triangular mounting plates of the theodolite support are respectively hinged to the skin through locking pins.

[0009] On the basis of the above scheme, the top ends of the left and right inclined support rods are respectively fixed to the skin through clamping devices, the middle parts are respectively hinged to the theodolite support crossbeam through bolts, and the adjusting mechanism is horizontally hinged to the bottom ends of the left and right inclined support rods through bolts.

[0010] On the basis of the above scheme, the theodolite is horizontally fixed to the adjusting mechanism through a threaded joint, and the position of the theodolite can be adjusted in the horizontal direction by adjusting the threaded joint.

[0011] The theodolite support has the advantages that the theodolite support is simple in structure and convenient to use, the center scale of the installation support on the newly-installed skin is compared with the center scale of the reference support on the existing skin by using the theodolite, whether the newly-installed skin is deviated during installation is determined, the installation position of the newly-installed skin is adjusted according to the deviation distance of the theodolite, and it is ensured that the newly-installed skin is aligned with the existing skin of the airplane after installation. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 FIG. 1 is a structural schematic view of the theodolite support of the present application;

[0013] Figure 2 FIG. 2 is a structural schematic view of the front reference support of the present application;

[0014] Figure 3 FIG. 3 is a structural schematic view of the first installation support of the present application;

[0015] Figure 4 FIG. 4 is a structural schematic view of the second installation support of the present application;

[0016] Figure 5 FIG. 5 is a structural schematic view of the rear reference support of the present application;

[0017] FIG. 6 is a structural schematic view of the theodolite of the present application;

[0018] 1 - theodolite support;

[0019] 1.1 - theodolite support crossbeam; 1.2 - left and right triangular mounting plates of the theodolite support;

[0020] 1.3 - left and right inclined support rods; 1.4 - adjusting mechanism;

[0021] 1.5 — Theodolite;

[0022] 2—Front reference bracket;

[0023] 2.1 — Front reference support crossbeam;

[0024] 2.2 — Left and right triangular mounting plates of the front reference bracket;

[0025] 3—First mounting bracket;

[0026] 3.1 — First mounting bracket crossbeam;

[0027] 3.2 — Left and right triangular mounting plates of the first mounting bracket;

[0028] 4—Second mounting bracket;

[0029] 4.1 — Second mounting bracket crossbeam;

[0030] 4.2 — Left and right triangular mounting plates of the second mounting bracket;

[0031] 5—Rear reference bracket;

[0032] 5.1 — Rear reference support crossbeam;

[0033] 5.2 — Left and right triangular mounting plates of the rear reference bracket. Detailed Implementation

[0034] like Figures 1-5 As shown, a skin centering tool is installed on the skin of an aircraft, which includes a set of theodolite brackets 1, a set of front reference brackets 2, first and second mounting brackets 3 and 4, and a set of rear reference brackets 5.

[0035] like Figure 1 As shown, the theodolite support 1 includes a theodolite support beam 1.1, left and right triangular mounting plates 1.2, left and right diagonal braces 1.3, an adjustment mechanism 1.4, and a theodolite 1.5. The two ends of the theodolite support beam 1.1 are horizontally mounted on the horizontal bottom edges of the left and right triangular mounting plates 1.2. The apexes of the left and right triangular mounting plates 1.2 are respectively hinged to the skin by locking pins. The tops of the left and right diagonal braces 1.3 are respectively fixed to the skin by clamping devices, and the middle parts are respectively hinged to the theodolite support beam 1.1 by bolts. The adjustment mechanism 1.4 is horizontally hinged to the bottom ends of the left and right diagonal braces 1.3 by bolts. The theodolite 1.5 is horizontally fixed to the adjustment mechanism 1.4 by threaded joints. The position of the theodolite 1.5 can be adjusted horizontally by adjusting the threaded joints.

[0036] like Figures 2-4As shown, the front and rear reference supports 2, 5 and the first and second mounting supports 3, 4 include a front reference support crossbeam 2.1, front reference support left and right triangular mounting plates 2.2, a first mounting support crossbeam 3.1, first mounting support left and right triangular mounting plates 3.2, a second mounting support crossbeam 4.1, second mounting support left and right triangular mounting plates 4.2, a rear reference support crossbeam 5.1, and rear reference support left and right triangular mounting plates 5.2. The two ends of the support crossbeams 2.1, 3.1, 4.1, and 5.1 are respectively horizontally mounted on the horizontal bottom edges of the left and right triangular mounting plates 2.2, 3.2, 4.2, and 5.2, and the vertices of the left and right triangular mounting plates 2.2, 3.2, 4.2, and 5.2 are respectively hinged to the skin by locking pins. The horizontal bottom edges of the left and right triangular mounting plates 2.2, 3.2, 4.2, and 5.2 of the front and rear reference supports 2, 5 and the first and second mounting supports 3, 4 are of the same size, and the heights of the vertices are different in pairs. The support crossbeams 2.1, 3.1, 4.1, and 5.1 of the front and rear reference supports 2, 5 and the first and second mounting supports 3, 4 have a centerline scale marked on the centerline of the skin at the hoisting position;

[0037] The theodolite support 1 is hoisted inside the existing skin at the frontmost position, the front reference support 2 is hoisted inside the existing skin in front of the newly installed skin, the first and second mounting supports 3, 4 are respectively hoisted inside the newly installed skin from front to back, and the rear reference support 5 is hoisted inside the existing skin behind the newly installed skin.

[0038] After assembly, first adjust the horizontal position of the theodolite 15 so that the theodolite cursor can simultaneously align with the centerline scales of the front and rear reference supports 1, 5, and use this as a reference. Adjust the eyepiece angle of the theodolite 15 so that the theodolite cursor aligns with the scale line of the first or second mounting support 3 or 4, and determine the front and rear offset of the skin installation by the scale, and adjust the installation position of the newly installed skin according to the offset distance.

Claims

1. A skin centering tool, installed on the skin of an aircraft, characterized in that, It includes a set of theodolite supports, a set of front reference supports, first and second mounting supports, and a set of rear reference supports; The theodolite support includes a theodolite support beam, left and right triangular mounting plates, left and right diagonal braces, an adjustment mechanism, and a theodolite. The two ends of the theodolite support beam are horizontally mounted on the horizontal bottom edges of the left and right triangular mounting plates. The apexes of the left and right triangular mounting plates are respectively hinged to the skin. The tops of the left and right diagonal braces are respectively fixed to the skin, and the middle parts are respectively hinged to the theodolite support beam. The adjustment mechanism is horizontally hinged to the bottom ends of the left and right diagonal braces. The theodolite is horizontally fixed to the adjustment mechanism. The position of the theodolite can be adjusted horizontally through the adjustment mechanism. The front and rear reference brackets and the first and second mounting brackets each include a bracket beam and left and right triangular mounting plates. The two ends of the bracket beam are horizontally mounted on the horizontal bottom edges of the left and right triangular mounting plates. The vertices of the left and right triangular mounting plates are respectively hinged to the skin. The horizontal bottom edge dimensions of the left and right triangular mounting plates of the front and rear reference brackets and the first and second mounting brackets are the same, but the vertices are different in height. The bracket beams of the front and rear reference brackets and the first and second mounting brackets have centerline markings on the skin centerline corresponding to the hoisting position. The theodolite support is suspended inside the existing skin at the front, the front reference support is suspended inside the existing skin in front of the newly installed skin, the first and second mounting supports are suspended inside the newly installed skin from front to back, and the rear reference support is suspended inside the existing skin behind the newly installed skin.

2. The skin centering tool according to claim 1, characterized in that, The left and right triangular mounting plates of the theodolite bracket and their vertices are respectively hinged to the skin by locking pins.

3. The skin centering tool according to claim 1, characterized in that, The top ends of the left and right diagonal braces are fixed to the skin by clamping devices, and the middle parts are hinged to the crossbeam of the theodolite support by bolts. The adjustment mechanism is horizontally hinged to the bottom ends of the left and right diagonal braces by bolts.

4. The skin centering tool according to any one of claims 1-3, characterized in that, The theodolite is horizontally fixed to the adjustment mechanism via a threaded joint, and the position of the theodolite can be adjusted horizontally by adjusting the threaded joint.

Images