Onboard metal pipe through-wall fastening device

Abstract

The invention provides a machine-mounted metal pipe through-wall fastening device. The machine-mounted metal pipe through-wall fastening device comprises at least one fastening set; one set of fastening set comprises two clamping rings and a fastening piece; the two clamping rings are connected through a fastener; each clamping ring comprises two semi-cylindrical flanges with flangings, and the flangings are semicircular or rectangular; the two semi-cylindrical flanges with the flanges are connected through a fastener, the core part of the fastening device is a clamping ring, the fastening device has two shapes, namely a semi-circular flange clamping ring and a rectangular flange clamping ring, and all metal tubular objects penetrating through structural partition plates on an airplane can be installed and fixed through the fastening device.

Description

Technical Field

[0001] The invention belongs to the technical field of aviation technical structure design and relates to an airborne metal pipe wall-penetrating fastening device. Background Art

[0002] There are similar tubular objects such as hydraulic conduits and environmental control pipes installed on aircraft. The hydraulic conduits are relatively thin and are fixed with conduit clamps or enterprise standard cable clamps 16A3-805-DE△△; the environmental control pipes are relatively thick and are generally fixed with navigation mark detachable clamps HB3-9-△△.

[0003] During the development of a certain type of aircraft, it is necessary to install a metal tube on the aircraft. The metal tube is composed of multiple sections, has a long length, a large diameter, a heavy weight per unit length (the weight per meter is much greater than the weight of the hydraulic conduit and the environmental control tube), a large spatial span, and needs to pass through the wall multiple times (through non-airtight partitions). It is necessary to design a new and practical wall-penetrating fastening device. Summary of the invention

[0004] The invention provides an airborne metal pipe wall penetration fastening device, which is suitable for metal pipes composed of multiple sections, with long length, large diameter and heavy weight per unit length.

[0005] The present invention provides an airborne metal pipe wall-penetrating fastening device, comprising: at least one set of fastening sets; one set of fastening sets comprises two clamping rings and a fastener; the two clamping rings are connected by the fastener;

[0006] Each clamping ring comprises two semi-cylindrical flanges with flanging edges, and the flanging flanges are semi-circular or rectangular; the two semi-cylindrical flanges with flanging edges are connected by fasteners.

[0007] Optionally, the semi-cylindrical wall thickness is 5 mm.

[0008] Optionally, the inner diameter of the semi-cylindrical shape is 4 mm larger than the outer diameter of the onboard metal tube.

[0009] Optionally, the two semi-cylindrical shapes have a plurality of screw passing holes evenly arranged along the circumference;

[0010] The machine-mounted metal tube is evenly arranged with a plurality of stop thread holes along the circumference, corresponding to the screw through holes.

[0011] Optionally, the clamping ring is made of 2024-T351-δ45, 2124-T851-δ45 or 7050-T7451-δ45 aluminum alloy pre-stretched sheet.

[0012] Optionally, the fasteners connecting the two semi-cylindrical flanges with flanges include: 4 bolts, 4 washers and 4 self-locking nuts.

[0013] Optionally, the fasteners for connecting the two semicircular clamping rings of the flanged flange include: 8 bolts, 8 washers and 8 self-locking nuts.

[0014] Optionally, the fasteners for connecting the two rectangular clamping rings of the flanged flange include: 12 bolts, 12 washers and 12 self-locking nuts.

[0015] The present invention provides an airborne metal pipe wall-penetrating fastening device. When the metal pipe passes through a partition on an aircraft, the fastening device can be used to fix the metal pipe, and the stress load on the metal pipe can be effectively transmitted to the aircraft structure through the partition, thereby ensuring that the metal pipe is securely installed and fixed under its own weight load or external tensile load, thereby enabling the metal pipe to be installed along a predetermined path and achieve a predetermined function. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the effect diagram of the semicircular flange clamp;

[0017] Figure 2 This is the design drawing of the semicircular flange clamp;

[0018] Figure 3 This is the effect diagram of the rectangular flange clamp;

[0019] Figure 4 This is the design drawing of the rectangular flange clamp;

[0020] Figure 5 This is a typical installation diagram of the fastening device;

[0021] Figure 6 It is the effect diagram of the fastening device installation application. DETAILED DESCRIPTION

[0022] The airborne metal pipe wall-penetrating fastening device provided by the present invention is explained below with reference to the accompanying drawings.

[0023] The present invention provides an airborne metal pipe through-the-wall fastening device, the main function of which is to provide a fastening point for the metal pipe at the through-the-wall position, limit the circumferential movement of the metal pipe, and if necessary, limit the axial movement of the metal pipe, so that the metal pipe is firmly fixed on the aircraft. Under random vibration and impact loads, the metal pipe does not have circumferential and axial movement that affects safety.

[0024] The present invention provides an airborne metal pipe wall-penetrating fastening device, comprising: at least one set of fastening sets; one set of fastening sets comprises two clamping rings and a fastener; the two clamping rings are connected by the fastener;

[0025] Each clamping ring comprises two semi-cylindrical flanges with flanging edges, and the flanging flanges are semi-circular or rectangular; the two semi-cylindrical flanges with flanging edges are connected by fasteners.

[0026] Optionally, the semi-cylindrical wall thickness is 5 mm.

[0027] Optionally, the inner diameter of the semi-cylindrical shape is 4 mm larger than the outer diameter of the onboard metal tube.

[0028] Optionally, the two semi-cylindrical shapes have a plurality of screw passing holes evenly arranged along the circumference;

[0029] The machine-mounted metal tube is evenly arranged with a plurality of stop thread holes along the circumference, corresponding to the screw through holes.

[0030] Optionally, the clamping ring is made of 2024-T351-δ45, 2124-T851-δ45 or 7050-T7451-δ45 aluminum alloy pre-stretched sheet.

[0031] Optionally, the fasteners connecting the two semi-cylindrical flanges with flanges include: 4 bolts, 4 washers and 4 self-locking nuts.

[0032] Optionally, the fasteners for connecting the two semicircular clamping rings of the flanged flange include: 8 bolts, 8 washers and 8 self-locking nuts.

[0033] Optionally, the fasteners for connecting the two rectangular clamping rings of the flanged flange include: 12 bolts, 12 washers and 12 self-locking nuts.

[0034] like Figure 1-6 As shown, the present invention provides an airborne metal pipe wall-penetrating fastening device, comprising: a set of fastening devices including two specially made left-right symmetrical (or centrally symmetrical) clamping ring parts, and fasteners (standard parts) for connection.

[0035] On the one hand, the design of the clamp ring should tighten the metal pipe, that is, it needs to solve the connection relationship with the metal pipe; on the other hand, the design of the clamp ring should consider the connection with the aircraft wall partition. For this reason, the clamp ring is designed in the shape of a semi-cylindrical flange with a flanging flange. The wall thickness of the semi-cylinder is generally 5mm, and the inner diameter of the semi-cylindrical shape is 4mm larger than the outer diameter of the metal column. The flanging flange can be designed as a semicircle or rectangle according to the actual situation.

[0036] After comprehensive consideration, the present invention designs two types of clamps, namely, semicircular flange clamps and rectangular flange clamps, to meet the needs of metal pipes in different positions for wall installation and fixation. Figure 1 , Figure 2 , the rectangular flange clamp effect diagram and design diagram are shown in Figure 3 , Figure 4 .

[0037] If the metal tube needs to be stopped axially by a clamping ring, a stopper threaded hole needs to be opened on the metal tube and a screw through hole needs to be opened on the clamping ring. The brake screw connection method is shown in Figure 5 shown.

[0038] The two clamping rings A1 and A2 are made of the same material, and can be made of 2024-T351-δ45, 2124-T851-δ45 or 7050-T7451-δ45 aluminum alloy pre-stretched plates. The plate thickness δ45 is for reference only, and other thicknesses of aluminum alloy pre-stretched plates can be selected according to actual conditions.

[0039] Combination Figure 6 The device of the present invention is described in detail:

[0040] Figure 6 When a metal pipe passes through partitions 1, 2 and 3 in sequence, the semicircular flange clamp and rectangular flange clamp are used to install and fix the metal pipe on the partition. In the figure, two sets of semicircular flange clamp fastening devices and one set of rectangular flange clamp fastening devices are used. The partition needs to be pre-opened with a metal pipe through hole (the hole diameter is 4mm larger than the metal pipe diameter) and a clamp flange installation hole.

[0041] In a set of fastening devices, the fasteners used for the butt connection of the snap ring include bolts HB1-101-6×22 (4 pieces), washers HB1-521LB6×12×1.5 (4 pieces), and self-locking nuts 16A1-1077-6 (4 pieces); the fasteners used for the connection of the semicircular flange snap ring and the partition include bolts HB1-101-8×24 (8 pieces), washers HB1-521LB8×16×2 (8 pieces), and self-locking nuts 16A1-1077-8 (8 pieces); the fasteners used for the connection of the rectangular flange snap ring and the partition include bolts HB1-101-8×24 (12 pieces), washers HB1-521LB8×16×2 (12 pieces), and self-locking nuts 16A1-1077-8 (12 pieces).

Claims

1. An airborne metal pipe wall fastening device, characterized in that: include: At least one fastening set; a fastening set includes two clamps and a fastener; The two clasps are connected by a fastener; Each clamping ring comprises two semi-cylindrical flanges with flanging edges, and the flanging flanges are semi-circular or rectangular; the two semi-cylindrical flanges with flanging edges are connected by fasteners.

2. The airborne metal pipe wall fastening device according to claim 1, characterized in that: The wall thickness of the semi-cylindrical shape is 5 mm.

3. The airborne metal pipe wall fastening device according to claim 1, characterized in that: The inner diameter of the semi-cylindrical tube is 4 mm larger than the outer diameter of the onboard metal tube.

4. The airborne metal pipe wall fastening device according to claim 1, characterized in that: The two semi-cylindrical shapes are provided with a plurality of screw passing holes evenly arranged along the circumference; The machine-mounted metal tube is evenly arranged with a plurality of stop thread holes along the circumference, corresponding to the screw through holes.

5. The airborne metal pipe wall fastening device according to claim 1, characterized in that: The clamping ring is made of 2024-T351-δ45, 2124-T851-δ45 or 7050-T7451-δ45 aluminum alloy pre-stretched plate.

6. The airborne metal pipe wall fastening device according to claim 1, characterized in that: The fasteners for connecting two semi-cylindrical flanges with flanges include: 4 bolts, 4 washers and 4 self-locking nuts.

7. The airborne metal pipe wall fastening device according to claim 1, characterized in that: The fasteners for connecting the two semicircular clamping rings of the flanged flange include: 8 bolts, 8 washers and 8 self-locking nuts.

8. The airborne metal pipe wall fastening device according to claim 1, characterized in that: The fasteners for connecting two rectangular clamping rings of the flanged flange include 12 bolts, 12 washers and 12 self-locking nuts.

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