A floor punching positioning tool for the inter-rail of the main cargo compartment of an airplane

Abstract

The utility model discloses a floor punching positioning tool for the main cargo compartment rail of airplane, including the airplane main cargo compartment rail of cross section is I -shaped, the installation board for bearing floor is provided to the opposite airplane main cargo compartment rail top, and the board surface between floor and installation board is equipped with a plurality of locating piece, and the connecting place of locating piece and installation board is provided with the locating pin, and the locating pin is in turn and passes through locating piece and installation board, and the top of locating pin is punched mark on the bottom surface of floor. Realize the hole site consistency and accuracy after punching, and the installation of later period is convenient, and reduce the scrap rate of floor. The tether that sets up simultaneously in the top of adjacent guide piece realizes convenient storage, and improves work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of aircraft maintenance technology, specifically to a floor drilling and positioning fixture used between the main cargo hold rails of an aircraft. Background Technology

[0002] The main cargo hold rails are a primary structure on an aircraft, with a floor installed between them to transfer the aircraft's load. It is a crucial infrastructure element on freighters. The cargo loading system, mounted on the rails, is primarily used for the safe and efficient loading, securing, and transport of air cargo containers and pallets. During the conversion of passenger aircraft to freighters, due to changes in aircraft configuration and load, the rails need to be replaced. The original passenger aircraft floor must be replaced with a composite material floor suitable for freighters. The screw holes on the rails for installing the floor change, and the new floor must be positioned and installed according to these holes.

[0003] Currently, manual drilling is used. Markings are made on the newly installed floor according to the drawings. Workers rely on experience or simple tools to locate and drill holes, which is entirely dependent on the worker's skills and eyesight. During the positioning process, the floor is prone to displacement, resulting in large errors and poor hole consistency. The marking process is very time-consuming, especially for complex and dense hole positions. The markings are easily erased or blurred, causing rework or incorrect drilling.

[0004] Therefore, this application is submitted. Utility Model Content

[0005] The purpose of this utility model is to provide a floor drilling and positioning fixture for use between the main cargo hold rails of an aircraft. The fixture positions the floor before drilling to ensure the consistency of the holes after drilling, improve accuracy, and facilitate drilling.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following solution:

[0007] A floor drilling and positioning fixture for use between the main cargo hold rails of an aircraft includes an aircraft main cargo hold rail with an I-shaped cross section, an mounting plate for supporting the floor is provided on the top of the opposite main cargo hold rail, a number of positioning pieces are provided between the floor and the mounting plate, a positioning pin is provided at the connection between the positioning piece and the mounting plate, the positioning pin passes through the positioning piece and the mounting plate in sequence, and the top of the positioning pin is marked with a hole on the bottom surface of the floor.

[0008] Furthermore, the top of the positioning pin is a conical protrusion, and when the bottom surface of the floor contacts the top of the protrusion, a concave point is created for drilling.

[0009] Furthermore, the positioning piece has an L-shaped structure, including a horizontal part parallel to the mounting plate and a vertical part perpendicular to the mounting plate and used to limit the two sides of the floor. The horizontal part is connected to the mounting plate by a positioning pin.

[0010] Furthermore, the protrusion is located above the horizontal portion of the positioning piece.

[0011] Furthermore, the protrusions correspond one-to-one in the mounting plates that are positioned opposite each other.

[0012] Furthermore, the top of the vertical part of the positioning piece is provided with a guide piece for placing the floor, and the guide piece is an inclined plate.

[0013] Furthermore, the angle between the guide plate and the vertical part of the positioning plate is 100°~150°.

[0014] Furthermore, it also includes a tether, the two ends of which are connected to the top of the adjacent guide plate.

[0015] Furthermore, the two ends of the tether are provided with circular terminals, which are connected by bolts through the through holes of the guide plate and nuts.

[0016] Furthermore, the positioning plates, guide plates, and tethers are all made of metal.

[0017] The beneficial effects of this utility model are:

[0018] This invention features several positioning plates, fixing pins, and guide plates for floor placement, all embedded in the mounting plates of the corresponding aircraft main cargo hold rails. The positioning pins have conical protrusions at their tips. By pressing down on the floor, the bottom surface of the floor contacts the protrusions of the positioning pins, creating recessed perforation marks. This ensures consistent hole positions after drilling, guaranteeing that the holes in the floor align with the pre-set holes in the aircraft main cargo hold rail mounting plates, facilitating subsequent installation and reducing floor scrap rates. Additionally, tethers at the tips of adjacent guide plates facilitate convenient storage and improve work efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the positioning plate of this utility model;

[0021] Figure 3 for Figure 1 A partially enlarged structural diagram;

[0022] Figure 4 A top-down view of the structure after the floor has been marked with holes.

[0023] Attached reference numerals: 1-Aircraft main cargo hold track, 10-Mounting plate, 2-Positioning plate, 3-Guide plate, 4-Positioning pin, 40-Protrusion, 5-Tether, 50-Connecting terminal, 51-Nut, 6-Floor, 60-Dimple. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0025] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "have," "install," "connect," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Example 1

[0028] Embodiment 1 of this utility model is a floor drilling and positioning fixture for the main cargo hold rails of an aircraft. It includes an aircraft main cargo hold rail 1 with an I-shaped cross section. An mounting plate 10 for supporting the floor 6 is provided on the top of the main cargo hold rail 1. Several positioning pieces 2 are provided between the floor 6 and the surface of the mounting plate 10. A positioning pin 4 is provided at the connection between the positioning piece 2 and the mounting plate 10. The positioning pin 4 passes through the positioning piece 2 and the mounting plate 10 in sequence, and the top of the positioning pin 4 is marked with a hole on the bottom surface of the floor 6.

[0029] Reference Figure 1 and Figure 2This drilling and positioning fixture features multiple pre-set holes on the mounting plates 10 of two opposing aircraft main cargo hold rails 1. A positioning piece 2 is mounted above each pre-set hole, and positioning pins 4 are used to fix the positioning piece 2 to the mounting plate 10, ensuring its stability. The positioning pins 4 serve both a fixing function and a marking function for drilling holes on the bottom surface of the floor 6. In use, the distance between the two aircraft main cargo hold rails 1 is adjusted according to the width of the floor 6, ensuring the spacing between the opposing positioning pieces 2 matches the width of the floor 6. Simultaneously, the positioning pins 4 in the mounting plate 10 are aligned one-to-one during the spacing adjustment. This allows the floor 6 to be placed above the positioning pieces 2, applying downward pressure. The bottom surface of the floor 6 makes close contact with the top of the positioning pin 4, creating a mark. This mark marks the drilling hole on the floor 6, eliminating the need for manual measurement or marking. This direct drilling operation ensures consistency and accuracy after drilling on both sides of the floor 6, improving work efficiency.

[0030] It should be noted that the top of the positioning pin 4 is a conical protrusion 40, and when the bottom surface of the floor 6 contacts the top of the protrusion 40, a recess 60 for drilling is created. (Refer to...) Figure 2 and Figure 4 After the positioning pin 4 fixes the positioning piece 2 above the mounting plate 10, the protrusion 40 at its top has a raised dot. When the floor 6 is placed inside the positioning piece 2 and pressed down, the raised dot 40 leaves a recess 60 on the bottom surface of the floor 6. This recess 60 can be used as a mark for subsequent drilling, ensuring the consistency of the drilled holes and making the holes in the floor 6 consistent with the preset holes in the mounting plate 10 of the aircraft main cargo hold rail 1. This facilitates later installation and reduces the scrap rate of the floor 6. Since the floor 6 is made of composite material, pressing down on the floor 6 creates a recess 60 on its bottom surface.

[0031] In order to securely limit the placement of the floor 6, the positioning piece 2 has an L-shaped structure, including a horizontal part parallel to the mounting plate 10 and a vertical part perpendicular to the mounting plate 10 and used to limit the two sides of the floor 6. The horizontal part is connected to the mounting plate 10 through a positioning pin 4.

[0032] Specifically, the positioning piece 2 is set as an L-shaped structure, with its horizontal part used for fixed installation and its vertical part used to limit the two sides of the floor 6, so that the two sides of the floor 6 are tightly installed between the opposite vertical parts, preventing the displacement phenomenon that occurs during the pressing of the floor 6.

[0033] Meanwhile, the protrusions 40 are located above the horizontal portion of the positioning piece 2, and each protrusion 40 corresponds to one of the oppositely arranged mounting plates 10. The position of the protrusions 40 is described here, which facilitates direct contact between the floor 6 and the protrusions 40 when the floor 6 is pressed down, while preventing the bottom surface of the floor 6 from contacting the positioning pin 4 at the bottom of the protrusion 40; at the same time, the one-to-one correspondence of the protrusions 40 further ensures the consistency of the drilling positioning.

[0034] In this embodiment, consistency means that the hole markings on the floor 6 are consistent with the preset hole positions in the mounting plate 10 of the aircraft main cargo hold rail 1, and that the hole positions on both sides of the floor 6 correspond one-to-one.

[0035] Example 2

[0036] This embodiment 2 is implemented based on embodiment 1. The top of the vertical portion of the positioning plate 2 is provided with a guide plate 3 for placing the floorboard 6. The guide plate 3 is an inclined plate. The angle between the guide plate 3 and the vertical portion of the positioning plate 2 is 100°~150°. The inclined guide plate 3 is located at the top of the vertical portion of the positioning plate 2. Its main purpose is to initially position the floorboard 6 between the opposing guide plates 3. As the height of the inclined surface of the guide plate 3 decreases, the two sides of the floorboard 6 come into contact with the vertical portion of the positioning plate 2, thus achieving convenient positioning of the floorboard 6. The angle between the guide plate 3 and the vertical portion can be set according to actual conditions, and will not be listed here.

[0037] Example 3

[0038] To facilitate the storage of the disassembled positioning piece 2, this embodiment 3 also includes a tether 5, with both ends of the tether 5 connected to the top of the adjacent guide piece 3. The tether 5 has circular terminals 50 at both ends, which are bolted through the through holes of the guide piece 3 and connected with nuts 51.

[0039] Reference Figure 1 and Figure 3 The tethering rope 5 has circular terminals 50 at both ends that pass through the top of the guide plate 3. After passing through the guide plate with bolts, it is fixed by nuts 51, thus installing the tethering rope 5 on the top of adjacent guide plates 3 on the same side and connecting adjacent positioning plates 2. After removing the positioning plates 2, you can simply hold the tethering rope 5 to lift the two positioning plates 2 for storage, improving storage efficiency. The circular terminals 50 can be welded to the bolts to ensure a firm connection; at the same time, the through hole at the top of the guide plate 3 can be a screw hole.

[0040] Meanwhile, the positioning plate 2, guide plate 3, and tether 5 are all made of metal. They can also be made of rigid materials or other materials to ensure strength after installation and use, and to facilitate the insertion of the high-strength protrusion 40 into the bottom surface of the composite material floor 6, forming a recess 60 as a drilling mark.

[0041] The working principle of this utility model is as follows: When in use, the floor 6 is placed between the opposite guide plates 3. As the height of the inclined surface of the guide plate 3 decreases, the two sides of the floor 6 come into contact with the vertical part of the positioning plate 2 until it descends and contacts the protrusion 40. Pressing down on the floor 6 will cause the floor 6 to move downward. The protrusion of the protrusion 40 leaves a concave point 60 on the bottom surface of the floor 6 to form a drilling mark for subsequent drilling operations, so as to achieve the consistency of the hole position after drilling, and make the hole position of the floor 6 consistent with the preset hole position in the mounting plate 10 of the aircraft main cargo hold rail 1, which facilitates the later installation and reduces the scrap rate of the floor 6.

[0042] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent substitutions, and improvements made to the above embodiments based on the technical essence of the present utility model and within the spirit and principles of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A floor punch positioning tool for use between the rails of a main cargo compartment of an aircraft, characterized by, The system includes an I-shaped main cargo hold rail (1), and an mounting plate (10) for supporting the floor (6) is provided on the top of the main cargo hold rail (1). Several positioning pieces (2) are provided between the floor (6) and the mounting plate (10). Positioning pins (4) are provided at the connection between the positioning pieces (2) and the mounting plate (10). The positioning pins (4) pass through the positioning pieces (2) and the mounting plate (10) in sequence, and the top of the positioning pins (4) is marked with holes on the bottom surface of the floor (6).

2. A floor punch positioning tool for use between the rails of a main cargo compartment of an aircraft as defined in claim 1, wherein, The top of the positioning pin (4) is a conical protrusion (40), and when the bottom surface of the floor (6) contacts the top of the protrusion (40), a concave point (60) is generated for drilling.

3. A floor punch positioning tool for use between the rails of a main cargo compartment of an aircraft as defined in claim 2, wherein, The positioning piece (2) has an L-shaped structure, including a horizontal part parallel to the mounting plate (10) and a vertical part perpendicular to the mounting plate (10) and used to limit the two sides of the floor (6). The horizontal part is connected to the mounting plate (10) by a positioning pin (4).

4. A floor punch positioning tool for use between the rails of a main cargo compartment of an aircraft as defined in claim 3, wherein, The protrusion (40) is located above the horizontal part of the positioning piece (2).

5. A floor punch positioning tool for use between the rails of a main cargo compartment of an aircraft as defined in claim 3, wherein, The protrusions (40) correspond one-to-one with the mounting plates (10) that are positioned opposite each other.

6. A floor punch positioning tool for use between the rails of a main cargo compartment of an aircraft as defined in claim 3, wherein, The top of the vertical part of the positioning piece (2) is provided with a guide piece (3) for placing the floor (6), and the guide piece (3) is an inclined plate.

7. A floor drilling and positioning fixture for the main cargo hold track between aircraft, as described in claim 6, characterized in that... The angle between the guide plate (3) and the vertical part of the positioning plate (2) is 100°~150°.

8. A floor punch positioning tool for use between the rails of a main cargo compartment of an aircraft as defined in claim 6, wherein, It also includes a tether (5), the two ends of which are connected to the top of the adjacent guide piece (3).

9. A floor punch positioning tool for use between the rails of a main cargo compartment of an aircraft as defined in claim 8, wherein, The two ends of the tether (5) are provided with circular terminals (50), which are connected by bolts through the through holes of the guide plate (3) and nuts (51).

10. A floor punch positioning tool for use between the rails of a main cargo compartment of an aircraft as defined in claim 8, wherein, The positioning plate (2), guide plate (3) and tether (5) are all made of metal.

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