Auxiliary tool for disassembling and assembling G4 fourth kitchen of B737NG airplane

Abstract

The utility model discloses a B737NG airplane G4 fourth kitchen dismounting auxiliary tool, and relates to the technical field of airplane regular maintenance, a raised head of a base is inserted into a groove of a G4 kitchen needing to be dismounted, the raised head is connected with a pin hole formed in the groove through a connecting mechanism, and then the base is connected with the G4 kitchen through a locking mechanism. The seat is moved to the base through the universal wheels, the base and the seat are rapidly connected through the detachable mechanism, the seat is driven by the longitudinal driving mechanism to move upwards, and therefore the G4 kitchen is driven by the base to move upwards, the seat is driven to move outwards after the G4 kitchen leaves the ground, and the G4 kitchen is moved out of an airplane kitchen installation area. The convenience of disassembly, assembly and movement of the G4 kitchen is improved, and the maintenance efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aircraft regular inspection and maintenance, in particular to an auxiliary tool for disassembling and assembling the G4 fourth galley of a B737NG aircraft. Background Art

[0002] The G4 fourth galley of a B737NG aircraft is installed at the tail of the aircraft cabin, with a relatively large volume and a weight of about 400 pounds. During regular inspection and maintenance, the problems of removing and moving the G4 galley often occur. What we face is that after removing the surrounding accessory components, the distance between the G4 galley and the adjacent aircraft structure is about 2.5 inches. With such a large volume and weight and such a small lifting dimension, it is very difficult to ensure that the aircraft structure is not damaged and the galley is moved smoothly only by manpower. Summary of the Invention

[0003] In order to overcome the above-mentioned deficiencies in technology, the utility model provides an auxiliary tool for conveniently and quickly disassembling, assembling and moving the G4 galley.

[0004] The technical solution adopted by the utility model to overcome its technical problems is as follows:

[0005] An auxiliary tool for disassembling and assembling the G4 fourth galley of a B737NG aircraft, comprising:

[0006] A seat, with universal wheels provided at its lower end;

[0007] A longitudinal driving mechanism, arranged on the seat, for driving the universal wheels to move up and down relative to the seat in the vertical direction;

[0008] A base, with a convex head provided at its front end, and the front end is connected to the seat through a detachable mechanism. The outer diameter of the convex head matches the inner diameter of the groove Ⅰ at the lower end of the G4 fourth galley of a B737NG aircraft. After the convex head of the base is inserted into the groove Ⅰ, it is connected to the G4 galley through a locking mechanism; and

[0009] A connecting mechanism, arranged in the convex head, for connecting with the pin hole in the groove Ⅰ.

[0010] In order to improve safety, the above-mentioned universal wheels are universal wheels with foot brakes.

[0011] Furthermore, the above-mentioned longitudinal driving mechanism includes a shaft seat installed on the seat, an internal thread hole arranged in the shaft seat in the vertical direction, and a screw rod Ⅰ screwed into the internal thread hole. The lower end of the screw rod Ⅰ is connected to the mounting seat at the upper end of the universal wheel.

[0012] In order to facilitate operation, a handle is horizontally installed at the upper end of the above-mentioned screw rod Ⅰ.

[0013] Further, the detachable mechanism includes two ear plates Ⅰ arranged at the rear end of the base and two ear plates Ⅱ. The ear plate Ⅱ is located at the lower end of the ear plate Ⅰ. A through hole Ⅱ is arranged horizontally in the ear plate Ⅰ, and the two through holes Ⅱ are coaxially arranged. A through hole Ⅳ is arranged horizontally in the ear plate Ⅱ, and the two through holes Ⅳ are coaxially arranged. Two through holes Ⅲ are arranged on the seat, and the axis of the through hole Ⅲ is arranged horizontally. The seat is located between the two ear plates Ⅰ and the two ear plates Ⅱ. A steel ball quick-release pin passes through the two through holes Ⅱ and the corresponding through holes Ⅲ, and another steel ball quick-release pin passes through the two through holes Ⅳ and the corresponding through holes Ⅲ.

[0014] Further, the locking mechanism includes through holes Ⅰ respectively arranged at the four corners of the base. After the convex head of the base is inserted into the groove Ⅰ, the screw passes through the through hole Ⅰ and is screwed into the corresponding screw hole at the G4 kitchen.

[0015] Further, the connecting mechanism includes a groove Ⅱ penetrating the base and the convex head horizontally, a guiding hole Ⅰ arranged at the upper end of the groove Ⅱ, and a guiding hole Ⅱ arranged at the lower end of the groove Ⅱ. The axis of the guiding hole Ⅰ is arranged vertically, and the guiding hole Ⅱ is coaxially arranged with the guiding hole Ⅰ. The screw rod Ⅱ is inserted into the guiding hole Ⅰ, the nut is screwed onto the screw rod Ⅱ, the nut is rotatably installed in the groove Ⅱ, a plug pin is coaxially arranged at the lower end of the screw rod Ⅱ, and the plug pin is slidably inserted into the guiding hole Ⅱ. After the convex head of the base is inserted into the groove Ⅰ, the nut is rotated to make the plug pin insert into the corresponding pin hole at the lower end of the groove Ⅰ of the G4 kitchen.

[0016] The beneficial effects of the present utility model are as follows: Insert the convex head of the base into the groove of the G4 kitchen to be disassembled, connect it to the pin hole already arranged in the groove through the connecting mechanism, and then connect the base to the G4 kitchen through the locking mechanism. Move the seat to the base through the universal wheels, quickly connect the base and the seat through the detachable mechanism, use the longitudinal driving mechanism to drive the seat to move upward, so as to drive the G4 kitchen to move upward through the base, move the seat outward after it leaves the ground, and move the G4 kitchen out of the aircraft kitchen installation area. The convenience of disassembly, assembly and movement of the G4 kitchen is improved, and the maintenance efficiency is improved. Description of the Drawings

[0017] Figure 1 is a three-dimensional structure diagram of the use state of the present utility model;

[0018] Figure 2 is an exploded three-dimensional structure of the base part of the present utility model Figure Ⅰ ;

[0019] Figure 3 is an exploded three-dimensional structure of the base part of the present utility model Figure Ⅱ ;

[0020] Figure 4This is the front view sectional structure diagram of the base part of the utility model;

[0021] Figure 5 This is the three-dimensional structure schematic diagram of the utility model;

[0022] In the figure, 1. seat, 2. axle seat, 3. screw rod I, 4. universal wheel, 5. handle, 6. G4 kitchen, 7. base, 8. ear plate I, 9. screw, 10. steel ball quick-release pin, 11. pin hole, 12. groove I, 13. screw hole, 14. convex head, 15. ear plate II, 16. through hole I, 17. through hole II, 18. through hole III, 19. through hole IV, 20. groove II, 21. guide hole I, 22. guide hole II, 23. screw rod II, 24. nut, 25. bolt. Specific implementation manner

[0023] The following will further describe the present utility model in conjunction with Figure 1 and Figure 5 to further explain the present utility model.

[0024] A disassembly and assembly auxiliary tooling for the G4 fourth kitchen of a B737NG aircraft includes: a seat 1, at the lower end of which a universal wheel 4 is provided; a longitudinal driving mechanism, arranged on the seat 1, for driving the universal wheel 4 to move up and down relative to the seat 1 in the vertical direction; a base 7, at the front end of which a convex head 14 is provided, and the front end is connected to the seat 1 through a detachable mechanism. The outer diameter of the convex head 14 matches the inner diameter of the groove I 12 at the lower end of the G4 kitchen 6 of the B737NG aircraft. After the convex head 14 of the base 7 is inserted into the groove I 12, it is connected to the G4 kitchen 6 through a locking mechanism; and a connecting mechanism, arranged in the convex head 14, for connecting with the pin hole 11 in the groove I 12. Insert the convex head 14 of the base 7 into the groove I 12 of the G4 kitchen to be disassembled, connect it to the pin hole 11 already provided in the groove I 12 through the connecting mechanism, and then connect the base 7 to the G4 kitchen 6 through the locking mechanism. Move the seat 1 to the base 7 through the universal wheel 4, quickly connect the base 7 to the seat 1 through the detachable mechanism, drive the seat 1 to move upward by using the longitudinal driving mechanism, so as to drive the G4 kitchen 6 to move upward through the base 7, and after it leaves the ground, drive the seat 1 to move outward to move the G4 kitchen 6 out of the aircraft kitchen installation area. The convenience of disassembly, assembly and movement of the G4 kitchen 6 is improved, and the maintenance efficiency is improved.

[0025] In an embodiment of the present utility model, the universal wheel 4 is a universal wheel with a foot-operated brake. When the movement of the G4 kitchen 6 is in place, the universal wheel 4 can be locked by stepping on the brake, preventing the entire auxiliary tooling from moving freely, and improving the reliability of use.

[0026] In an embodiment of the present utility model, the longitudinal driving mechanism includes a shaft seat 2 installed on the seat 1, an internal thread hole arranged in the shaft seat 2 along the vertical direction, and a screw rod I 3 screwed into the internal thread hole. The lower end of the screw rod I 3 is connected to the mounting seat at the upper end of the universal wheel 4. When the screw rod I 3 is rotated, the shaft seat 2 will move axially during rotation, thereby driving the G4 kitchen 6 to move upward through the base 7, making it convenient to move out. In this embodiment, a handle 5 is installed horizontally at the upper end of the screw rod I 3. The screw rod I 3 can be conveniently driven to rotate through the handle 5, improving the convenience of operation.

[0027] In an embodiment of the present utility model, the detachable mechanism can be of the following structure, which includes two ear plates I 8 and two ear plates II 15 arranged at the rear end of the base 7. The ear plates II 15 are located at the lower ends of the ear plates I 8. A through hole II 17 is arranged horizontally in the ear plates I 8, and the two through holes II 17 are coaxially arranged. A through hole IV 19 is arranged horizontally in the ear plates II 15, and the two through holes IV 19 are coaxially arranged. Two through holes III 18 are arranged on the seat 1, and the axes of the through holes III 18 are arranged horizontally. The seat 1 is located between the two ear plates I 8 and the two ear plates II 15. A steel ball quick-release pin 10 passes through the two through holes II 17 and the corresponding through holes III 18, and another steel ball quick-release pin 10 passes through the two through holes IV 19 and the corresponding through holes III 18. After the base 7 is fixed to the G4 kitchen 6, the seat 1 is inserted into the area between the two ear plates I 8 and the two ear plates II 15, so that the two through holes III 18 are respectively coaxially arranged with the through holes II 17 and the through holes IV 19. The steel ball quick-release pin 10 is passed through the two through holes II 17 and the corresponding through holes III 18, and another steel ball quick-release pin 10 is passed through the two through holes IV 19 and the corresponding through holes III 18, and the convenient connection between the base 7 and the seat 1 can be realized. When releasing, the steel ball quick-release pin 10 is pulled out to separate the base 7 from the seat 1.

[0028] In an embodiment of the present utility model, the locking mechanism can be of the following structure, which includes through holes I 16 respectively arranged at the four corners of the base 7. After the convex head 14 of the base 7 is inserted into the groove I 12, the screw 9 passes through the through hole I 16 and is screwed into the corresponding screw hole 13 at the G4 kitchen 6. The screw 9 can be used to conveniently fix the base 7 to the screw holes 13 that have been set around the groove I 12 area of the G4 kitchen 6. The installation and disassembly are convenient, improving the efficiency.

[0029] In one embodiment of the utility model, the connecting mechanism can be the following structure, which includes a groove II 20 that penetrates the base 7 and the protrusion 14 in the horizontal direction, a guide hole I 21 arranged at the upper end of the groove II 20, and a guide hole II 22 arranged at the lower end of the groove II 20. The axis of the guide hole I 21 is arranged in the vertical direction, and the guide hole II 22 is arranged coaxially with the guide hole I 21. The screw rod II 23 is inserted into the guide hole I 21, and the nut 24 is screwed on the screw rod II 23. The nut 24 is rotatably installed in the groove II 20. The lower end of the screw rod II 23 is coaxially provided with a pin 25, and the pin 25 is slidably inserted into the guide hole II 22. When the protrusion 14 of the base 7 is inserted into the groove I 12, the nut 24 is rotated to insert the pin 25 into the pin hole 11 corresponding to the lower end of the groove I 12 of the G4 kitchen 6. Since the groove II 20 is a through design, a wrench can be inserted into the groove II 20 to drive the nut 24 to rotate, and the plug 25 is inserted into the pin hole 11 to realize the quick connection between the base 7 and the G4 kitchen 6, and the front and rear directions are locked, making the connection structure more stable. The nut 24 can be rotated in the reverse direction to drive the plug 25 to move up, so that it is disengaged from the pin hole 11, thereby realizing quick unlocking.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An auxiliary tooling for disassembly and assembly of the G4 fourth galley of a B737NG aircraft, characterized in that Comprising: A seat (1) with universal wheels (4) provided at its lower end; A longitudinal drive mechanism provided on the seat (1) for driving the universal wheels (4) to move up and down relative to the seat (1) in the vertical direction; A base (7) with a convex head (14) provided at its front end, and its front end is connected to the seat (1) through a detachable mechanism. The outer diameter of the convex head (14) matches the inner diameter of the groove Ⅰ (12) at the lower end of the G4 galley (6) of the B737NG aircraft. After the convex head (14) of the base (7) is inserted into the groove Ⅰ (12), it is connected to the G4 galley (6) by a locking mechanism; and A connecting mechanism provided in the convex head (14) for connecting with the pin hole (11) in the groove Ⅰ (12).

2. The disassembly and assembly auxiliary tooling for the G4 fourth galley of the B737NG aircraft according to claim 1, wherein: The universal wheels (4) are universal wheels with foot brakes.

3. The disassembly and assembly auxiliary tooling for the G4 fourth galley of the B737NG aircraft according to claim 1, characterized in that: The longitudinal drive mechanism includes a shaft seat (2) installed on the seat (1), an internal thread hole provided in the shaft seat (2) in the vertical direction, and a screw Ⅰ (3) screwed into the internal thread hole. The lower end of the screw Ⅰ (3) is connected to the mounting seat at the upper end of the universal wheel (4).

4. The disassembly and assembly auxiliary tooling for the G4 fourth galley of the B737NG aircraft according to claim 3, characterized in that: A handle (5) is horizontally installed at the upper end of the screw Ⅰ (3).

5. The disassembly and assembly auxiliary tooling for the G4 fourth galley of the B737NG aircraft according to claim 1, wherein: The detachable mechanism includes two ear plates Ⅰ (8) provided at the rear end of the base (7) and two ear plates Ⅱ (15). The ear plates Ⅱ (15) are located at the lower end of the ear plates Ⅰ (8). A through hole Ⅱ (17) is horizontally provided in the ear plates Ⅰ (8), and the two through holes Ⅱ (17) are coaxially arranged. A through hole Ⅳ (19) is horizontally provided in the ear plates Ⅱ (15), and the two through holes Ⅳ (19) are coaxially arranged. Two through holes Ⅲ (18) are provided on the seat (1), and the axes of the through holes Ⅲ (18) are horizontally arranged. The seat (1) is located between the two ear plates Ⅰ (8) and the two ear plates Ⅱ (15). A steel ball quick-release pin (10) passes through the two through holes Ⅱ (17) and the corresponding through holes Ⅲ (18), and another steel ball quick-release pin (10) passes through the two through holes Ⅳ (19) and the corresponding through holes Ⅲ (18).

6. The disassembly and assembly auxiliary tooling for the G4 fourth galley of the B737NG aircraft according to claim 1, wherein: The locking mechanism includes through holes Ⅰ (16) respectively provided at the four corners of the base (7). After the convex head (14) of the base (7) is inserted into the groove Ⅰ (12), the screw (9) passes through the through holes Ⅰ (16) and is then screwed into the corresponding screw hole (13) at the G4 galley (6).

7. The disassembly and assembly auxiliary tooling for the G4 fourth galley of the B737NG aircraft according to claim 1, wherein: The connecting mechanism includes a groove II (20) penetrating through the base (7) and the convex head (14) in the horizontal direction, a guiding hole I (21) arranged at the upper end of the groove II (20), and a guiding hole II (22) arranged at the lower end of the groove II (20). The axis of the guiding hole I (21) is arranged in the vertical direction, and the guiding hole II (22) is coaxially arranged with the guiding hole I (21). A screw rod II (23) is inserted into the guiding hole I (21), a nut (24) is screwed on the screw rod II (23), and the nut (24) is rotatably installed in the groove II (20). A plug pin (25) is coaxially arranged at the lower end of the screw rod II (23), and the plug pin (25) is slidably inserted into the guiding hole II (22). After the convex head (14) of the base (7) is inserted into the groove I (12), the nut (24) is rotated to insert the plug pin (25) into the corresponding pin hole (11) at the lower end of the groove I (12) of the G4 kitchen (6).

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