Repair support for soft fuel tank of airplane

Abstract

The utility model provides an airplane soft oil tank repairing support which comprises a cross-shaped base, a stand column is fixed to the center of the top of the cross-shaped base, an inclined supporting rod is fixed between the stand column and the cross-shaped base, a manual lifting device is fixedly installed on the top of the stand column through an installation base, and a lifting screw is installed in the manual lifting device in a matched mode. The bottom end of the lifting screw extends into the stand column, a top vertical rod is fixed to the top of the lifting screw through a flange base, circular plates are fixed to the top of the top vertical rod, an inner frame rod is fixedly installed between the circular plates, a rectangular frame is arranged on the periphery of the inner frame rod, and a plurality of lifting chains are slidably installed on the rectangular frame through sliding rings. Hooks are fixed at the tail ends of the hoisting chains. The support can be used for hoisting and hanging in the repairing process of the soft fuel tank of the airplane, so that the soft fuel tank is in an upright state, a maintainer can repair the soft fuel tank in all directions, the maintenance efficiency is effectively improved, and the operation intensity is reduced.

Description

Technical Field

[0001] The utility model relates to the field of aviation equipment manufacturing, and particularly relates to a repair bracket for an aircraft flexible fuel tank. Background Art

[0002] In order to facilitate the arrangement and installation of fuel tanks inside the wings of an aircraft, flexible fuel tanks are usually used. At present, when the fuel tank needs to be disassembled and repaired, the common practice is to directly disassemble the fuel tank and place it on the ground. Since the fuel tank is flexible, it will directly collapse and lie flat on the ground, making it impossible to perform a full-range inspection of the outer surface of the fuel tank. At this time, during the inspection process, the fuel tank needs to be lifted so that it is in an upright state off the ground. However, the existing maintenance workshops lack special lifting equipment. During the hoisting process of the fuel tank, only the lifting rope can be manually connected and then hung on the bracket. The above operation process seriously affects and restricts the maintenance efficiency, and has a high operation intensity, making it impossible to well achieve a full-range inspection of the fuel tank. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a repair bracket for an aircraft flexible fuel tank, which can be used for hoisting and hanging during the repair process of the aircraft flexible fuel tank, so that the flexible fuel tank is in an upright state, facilitating maintenance personnel to perform a full-range repair on the flexible fuel tank, thereby effectively improving the maintenance efficiency and reducing the operation intensity.

[0004] To achieve the above technical features, the purpose of the utility model is realized as follows: A repair bracket for an aircraft flexible fuel tank includes a cross-shaped base. A column is fixed at the central part of the top of the cross-shaped base. Oblique support rods are fixed between the column and the cross-shaped base. A manual lifting device is fixedly installed at the top of the column through a mounting seat. A lifting screw rod is installed inside the manual lifting device in a matching manner. The bottom end of the lifting screw rod extends into the column. The top of the lifting screw rod is fixed with a top vertical rod through a flange seat. A circular plate is fixed at the top of the top vertical rod. Inner frame rods are fixedly installed between the circular plates. A rectangular frame is arranged outside the inner frame rods. A plurality of hoisting chains are slidably installed on the rectangular frame through slip rings. Hooks are fixed at the ends of the hoisting chains.

[0005] Double-brake universal wheels are installed on caster brackets fixed at the four corners of the bottom of the cross-shaped base.

[0006] A circular reinforcing plate is fixed on the periphery of the central part of the cross-shaped base.

[0007] A traction rod is hinged at a corner of the top of the cross-shaped base through a hinge seat. The other end of the traction rod is placed on a U-shaped hook after being flipped and retracted. The U-shaped hook is fixed on the outer wall of the column.

[0008] The manual lifting device includes a reduction gearbox fixed to the top of the mounting base. Inside the reduction gearbox, a nut sleeve is rotatably supported by a first plain bearing and a second plain bearing. An internal thread for forming a threaded drive with the lifting screw is provided at the center of the nut sleeve. A worm gear is provided outside the nut sleeve, and the worm gear and the worm form a worm and worm gear drive. The worm is rotatably installed inside the reduction gearbox.

[0009] A handwheel is installed at the end of the worm.

[0010] Inner reinforcing bars are provided between the top corners of the inner frame bars and the rectangular frame.

[0011] The utility model has the following beneficial effects:

[0012] 1. By adopting this bracket, it can be used for lifting and hanging during the repair of the aircraft soft fuel tank, so that the soft fuel tank is in an upright state, which is convenient for maintenance personnel to repair the soft fuel tank in all directions, effectively improving the maintenance efficiency and reducing the operation intensity.

[0013] 2. Through the double-brake universal wheels, the cross-shaped base can be limited during the maintenance process, thereby preventing it from slipping.

[0014] 3. Through the above-mentioned circular reinforcing plate, the structural strength of the cross-shaped base is enhanced, thereby ensuring the stability and reliability of the structure.

[0015] 4. Through the above-mentioned towing rod, it is convenient to transfer the entire repair bracket during the subsequent transfer process.

[0016] 5. Through the above-mentioned manual lifting device, it is convenient to adjust the height of the entire rectangular frame subsequently, and then adjust the height of the soft fuel tank so that it can be lifted off the ground.

[0017] 6. Through the above-mentioned handwheel, it is convenient to provide rotational power, and then used to provide lifting power. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following further illustrates the utility model with reference to the drawings and embodiments.

[0019] Figure 1 It is the three-dimensional view of the first perspective of the utility model.

[0020] Figure 2 It is the three-dimensional view of the second perspective of the utility model.

[0021] Figure 3 It is the three-dimensional view of the third perspective of the utility model.

[0022] Figure 4 It is the three-dimensional view of the fourth perspective of the utility model.

[0023] Figure 5 This is the front view of the utility model.

[0024] Figure 6 This is the Figure 5 A - A view in the utility model.

[0025] Figure 7 This is the hanging diagram of the soft fuel tank during the repair process of the utility model.

[0026] Figure 8 This is the Figure 6 Partial view of the manual lifting device in the utility model.

[0027] In the figure: double - brake universal wheel 1, caster bracket 2, cross - shaped base 3, circular reinforcement plate 4, towing bar 5, U - shaped hook 6, vertical column 7, inclined support bar 8, hinge seat 9, mounting seat 10, handwheel 11, manual lifting device 12, lifting screw 13, flange seat 14, top vertical bar 15, hook 16, hoisting chain 17, rectangular frame 18, circular plate 19, inner frame bar 20, inner reinforcement bar 21, soft fuel tank 22;

[0028] Reducer housing 1201, nut sleeve 1202, worm 1203, second plain bearing 1204, first plain bearing 1205. Specific embodiments

[0029] The following further describes the embodiments of the utility model with reference to the accompanying drawings.

[0030] Referring to Figure 1-8 , an aircraft soft fuel tank repair bracket includes a cross - shaped base 3. A vertical column 7 is fixedly installed at the central part of the top of the cross - shaped base 3. An inclined support bar 8 is fixed between the vertical column 7 and the cross - shaped base 3. The top of the vertical column 7 is fixedly installed with a manual lifting device 12 through a mounting seat 10. An internal lifting screw 13 is installed in the manual lifting device 12 in a matching manner. The bottom end of the lifting screw 13 extends into the interior of the vertical column 7. The top of the lifting screw 13 is fixed with a top vertical bar 15 through a flange seat 14. A circular plate 19 is fixed at the top of the top vertical bar 15. Inner frame bars 20 are fixedly installed between the circular plates 19. A rectangular frame 18 is arranged around the inner frame bars 20. A plurality of hoisting chains 17 are slidably installed on the rectangular frame 18 through slip rings. Hooks 16 are fixed at the ends of the hoisting chains 17. This bracket can be used for hoisting and hanging the soft fuel tank during the repair process of the aircraft, so that the soft fuel tank is in an upright state, facilitating the maintenance personnel to perform all - round repairs on the soft fuel tank, thereby effectively improving the maintenance efficiency and reducing the labor intensity. In the specific use process, the soft fuel tank is hung on the hook 16, and then the height is adjusted through the manual lifting device 12 to lift it off the ground, facilitating the subsequent cleaning or repair operations of the soft fuel tank by manual workers.

[0031] Further, casters brackets 2 are fixedly installed at the four corners of the bottom of the cross-shaped base 3, and double-brake universal casters 1 are installed on the casters brackets 2. The double-brake universal casters 1 facilitate the movement of the entire repair bracket, thereby enhancing its flexibility in use and facilitating the transfer of the repair bracket. The double-brake universal casters 1 can limit the cross-shaped base 3 during the maintenance process, thereby preventing it from slipping.

[0032] Further, a circular reinforcing plate 4 is fixed around the central part of the cross-shaped base 3. The circular reinforcing plate 4 enhances the structural strength of the cross-shaped base 3, thereby ensuring the stability and reliability of the structure. Moreover, the cross-shaped base 3 facilitates the standing operation of personnel during subsequent repair operations.

[0033] Further, a towing rod 5 is hinged to a corner of the top of the cross-shaped base 3 through a hinge seat 9. After the other end of the towing rod 5 is flipped and retracted, it is placed on a U-shaped hook 6, and the U-shaped hook 6 is fixed on the outer wall of the column 7. The towing rod 5 facilitates the transfer of the entire repair bracket during subsequent transfer and movement. Moreover, when not in use, it is convenient for it to be flipped and stored.

[0034] Further, the manual lifting device 12 includes a reduction gearbox body 1201 fixed to the top of the mounting seat 10. A nut sleeve 1202 is rotatably supported inside the reduction gearbox body 1201 by a first plain bearing 1205 and a second plain bearing 1204. An internal thread for forming a screw drive with the lifting screw 13 is provided at the center of the nut sleeve 1202. A worm gear is provided outside the nut sleeve 1202, and the worm gear and a worm 1203 form a worm gear drive. The worm 1203 is rotatably installed inside the reduction gearbox body 1201. The manual lifting device 12 facilitates the subsequent adjustment of the height of the entire rectangular frame 18, and then the height of the soft fuel tank is adjusted so that it can be lifted off the ground. During the specific adjustment process, by rotating the worm 1203, the worm 1203 drives the worm gear, and then the worm gear drives the nut sleeve 1202 to rotate. The nut sleeve 1202 drives the lifting screw 13 to achieve the lifting action. Moreover, by using the first plain bearing 1205 and the second plain bearing 1204, it is ensured that the nut sleeve 1202 can bear a certain axial force, thereby ensuring the smoothness of its rotation.

[0035] Further, a handwheel 11 is installed at the end of the worm 1203. The handwheel 11 facilitates the provision of rotational power, and thus is used to provide lifting power.

[0036] Further, an internal reinforcing rod 21 is provided between the top corners of the inner frame rod 20 and the rectangular frame 18. The internal reinforcing rod 21 enhances the structural strength and stability of the rectangular frame 18.

[0037] Basic principle of the utility model:

[0038] When it is necessary to repair and hoist the flexible fuel tank 22, first, drag the entire repair bracket to the position to be repaired through the towing rod 5, then lock the double-brake universal wheels 1 to fix the entire repair bracket, and operate the manual lifting device 12. Lower the lifting screw rod 13 to the lowest position through the manual lifting device 12, and hang the flexible fuel tank 22 to be cleaned or repaired on the hook 16 of the repair bracket. At this time, the worker can carry out the cleaning and repair operations on the flexible fuel tank; during the repair process, rotate the worm 1203, drive the worm wheel through the worm 1203, and then the worm wheel drives the nut sleeve 1202 to rotate. Drive the lifting screw rod 13 through the nut sleeve 1202 to achieve the lifting action, and then adjust the hanging height of the flexible fuel tank 22; and the circular reinforcing plate 4 on the base can be used as a backing plate for the worker to step on.

Claims

1. An aircraft soft fuel tank repair bracket, characterized in that: The utility model comprises a cross-shaped base (3), a column (7) is fixed at the center of the top of the cross-shaped base (3), an oblique support rod (8) is fixed between the column (7) and the cross-shaped base (3), a manual lifting device (12) is fixedly installed on the top of the column (7) through a mounting seat (10), a lifting screw rod (13) is installed inside the manual lifting device (12), the bottom end of the lifting screw rod (13) extends into the inside of the column (7), a top vertical rod (15) is fixed on the top of the lifting screw rod (13) through a flange seat (14), a circular plate (19) is fixed on the top of the top vertical rod (15), an inner frame rod (20) is fixedly installed between the circular plates (19), a rectangular frame (18) is arranged on the periphery of the inner frame rod (20), a plurality of lifting chains (17) are slidably installed on the rectangular frame (18) through a slip ring, and a hook (16) is fixed at the end of the lifting chain (17).

2. The aircraft soft fuel tank repair bracket according to claim 1, characterized in that: Caster brackets (2) are fixedly mounted at the four bottom corners of the cross-shaped base (3), and a double-brake universal wheel (1) is mounted on the caster bracket (2).

3. The aircraft soft fuel tank repair bracket according to claim 1, characterized in that: A circular reinforcement plate (4) is fixed to the periphery of the central portion of the cross-shaped base (3).

4. The aircraft soft fuel tank repair bracket according to claim 1, characterized in that: A traction rod (5) is hingedly connected to one corner of the top of the cross-shaped base (3) via a hinge seat (9); the other end of the traction rod (5) is placed on a U-shaped hook (6) after being turned over and folded; the U-shaped hook (6) is fixed to the outer wall of the column (7).

5. The aircraft soft fuel tank repair bracket according to claim 1, characterized in that: The manual lifting device (12) comprises a reduction box (1201) fixed on the top of the mounting seat (10); a nut sleeve (1202) is rotatably supported inside the reduction box (1201) via a first plane bearing (1205) and a second plane bearing (1204); an internal thread for forming a threaded transmission with a lifting screw (13) is arranged at the center of the nut sleeve (1202); a worm gear is arranged outside the nut sleeve (1202); the worm gear and the worm (1203) form a worm gear transmission; the worm (1203) is rotatably mounted inside the reduction box (1201).

6. The aircraft soft fuel tank repair bracket according to claim 5, characterized in that: A hand wheel (11) is mounted on the end of the worm (1203).

7. The aircraft soft fuel tank repair bracket according to claim 1, characterized in that: An inner reinforcement rod (21) is provided between the inner frame rod (20) and the top corner of the rectangular frame (18).

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