Buckle type aircraft oil way pipeline strain measurement clamp device

Abstract

A buckle type aircraft oil way pipeline strain measurement clamp device comprises a pair of upper half clamp bodies oppositely arranged on an oil way pipeline, a corresponding lower plate clamp body and a buckle handle of the upper half clamp bodies, the upper half clamp bodies and the lower half clamp bodies are rotationally connected, the lower half clamp bodies are rotationally connected with the buckle handle, and the upper half clamp bodies and the lower plate clamp bodies are connected through a bolt. A buckle ring is arranged on the buckle handle and connected with the upper half clamp body in a clamped mode, and the upper half clamp body, the lower half clamp body, the buckle handle and the buckle ring are sequentially arranged on the periphery of the oil way pipeline. The device can avoid the potential safety hazard problem caused by bolt falling. Compared with an existing pipeline strain measurement structure, the installation efficiency and safety of the pipeline strain measurement structure are improved, and therefore rapid aircraft oil way pipeline strain measurement is achieved.

Description

Technical Field

[0001] This utility model relates to a technology in the field of testing equipment, specifically a snap-on aircraft oil pipeline strain measurement fixture device. Background Technology

[0002] Strain measurement of aircraft fuel lines is crucial. Most existing aircraft pipeline strain measurement fixtures rely on bolts to clamp the bolts to the pipeline. However, this method is time-consuming and labor-intensive, with a long average installation time for a single fixture. Furthermore, installation requires carrying the fixture body and bolts, making it difficult to meet the demands of measuring multiple pipelines and locations within a short timeframe. Additionally, the bolts themselves are susceptible to loosening during vibration, increasing the risk of parts falling into critical areas of the aircraft. Therefore, the structural design of aircraft pipeline strain measurement fixtures directly impacts measurement efficiency and safety. Utility Model Content

[0003] This invention addresses the aforementioned shortcomings of existing technologies by proposing a snap-fit ​​aircraft fuel line strain measurement fixture device, which avoids safety hazards caused by bolt detachment. Compared to existing pipeline strain measurement structures, it improves installation efficiency and safety, thereby enabling rapid aircraft fuel line strain measurement.

[0004] This utility model is achieved through the following technical solution:

[0005] This utility model relates to a snap-fit ​​aircraft oil pipeline strain measurement fixture device, comprising: a pair of upper clamping bodies and a corresponding lower clamping body and a snap-fit ​​handle disposed opposite to each other on the oil pipeline, wherein: the upper and lower clamping bodies are rotatably connected to each other, the lower clamping body is rotatably connected to the snap-fit ​​handle, and the snap-fit ​​handle is provided with a snap-fit ​​ring that snaps into the upper clamping body, and the upper and lower clamping bodies, the snap-fit ​​handle and the snap-fit ​​ring are sequentially disposed around the oil pipeline.

[0006] Technical effect

[0007] Compared to existing bolt-clamping structures, which involve numerous parts, slow installation, and the risk of parts falling off, this invention employs a boltless clamp design. Unlike traditional clamps where parts are connected by bolts, this invention uses non-removable hinges for rotatable connections. This structure ensures that components will not detach due to vibration or other factors during normal operation, eliminating the risk of parts falling into critical areas of the aircraft.

[0008] Unlike traditional clamps that use bolts to provide tension, this invention uses a snap-ring to create elastic deformation and clamp the upper and lower halves of the clamp. When the snap-ring handle is rotated, the snap-ring gradually stretches to its extended position, then gradually relaxes to a final, slightly stretched position. At this point, the snap-ring handle engages with the lower clamp, stopping further rotation. This ensures the snap-ring remains stretched at its final position, providing clamping force, while also requiring additional force to stretch the snap-ring to its maximum extension position when the snap-ring handle reverses. This prevents the clamp from slipping due to the snap-ring handle naturally reversing during clamping, further enhancing the clamp's safety.

[0009] Unlike traditional clamps that use bolts, resulting in scattered clamp parts and cumbersome installation, this utility model features an integrated structure where all parts are connected by non-removable hinges. This reduces the number of parts to carry during installation, and installation only requires rotating the buckle handle to complete the tensioning, eliminating the need to tighten multiple bolts and significantly improving installation efficiency. Attached Figure Description

[0010] Figure 1 This is an isometric view of the pipe clamping and installation of this utility model;

[0011] Figure 2 This is a side view of the present invention;

[0012] Figure 3 This is the front view of the present invention;

[0013] Figure 4 This is a schematic diagram illustrating the usage state of an embodiment;

[0014] In the diagram: 1 Upper clamping body, 2 Lower clamping body, 3 Clip handle, 4 Clip ring, 5 Strain gauge adhesive plate, 6 Axial fixing shaft, 7 Oil pipeline. Detailed Implementation

[0015] like Figure 1 As shown in the figure, this embodiment relates to a snap-fit ​​aircraft oil pipeline strain measurement fixture device, including: a pair of upper clamping bodies 1 and a corresponding lower clamping body 2 and a snap-fit ​​handle 3 respectively disposed opposite to each other on the oil pipeline, wherein: the upper and lower clamping bodies 1 and 2 are rotatably connected, the lower clamping body 2 is rotatably connected to the snap-fit ​​handle 3, and the snap-fit ​​handle 3 is provided with a snap-fit ​​ring 4 that snaps into the upper clamping body 1. The upper and lower clamping bodies, the snap-fit ​​handle and the snap-fit ​​ring are sequentially disposed around the oil pipeline 7.

[0016] A pair of strain gauge mounting plates 5 are provided between the two upper clamping bodies 1 along the direction of the oil pipeline 7, and the strain gauges are attached to the strain gauge mounting plates. These strain gauge mounting plates are a pair of thin sheet structures made of the same or similar material as the pipeline, with a strain gauge attached to the center of each plate to measure minute strain in the pipeline. The thin sheets of the two strain gauge mounting plates are perpendicular to each other and equidistant from the central axis of the pipeline.

[0017] The strain gauge mounting plate 5 and the upper clamping body 1 are interference-fitted.

[0018] like Figure 4 As shown, when in use, the buckle engages with the buckle slot of the upper clamping body. After rotating the handle, the end of the buckle ring will move in a circular motion along the red trajectory a, while the buckle ring will gradually stretch from the initial position b to the maximum stretch length position c. Then the buckle ring will gradually loosen until it reaches the final position d, at which point the buckle handle and the lower clamping body are in contact, preventing the buckle handle from rotating further. At this point, the clamp is installed. Taking the dimensions of this example as an example, the final stretch length of the buckle ring is the difference between the length at position d (13.51 mm) and the initial length at position b (12.75 mm), i.e., a stretch length of 0.76 mm. This stretch length provides sufficient tension to ensure the clamp and pipe are securely clamped. There is a 0.54 mm difference between the final stretch length at position d (13.51 mm) and the length at the maximum stretch position c (14.05 mm). This extra stretch length ensures that the buckle ring will not rotate abnormally clockwise without external force, preventing the buckle ring from loosening naturally.

[0019] The upper clamping body 1 and lower clamping body 2 are made of the same or similar material as the pipe material to reduce strain signal differences caused by material differences. The inner diameter of the contact surface between the clamping body and the pipe should be slightly smaller than the outer diameter of the pipe, and when the upper and lower clamping bodies are clamped, the contact surfaces of the upper and lower clamping bodies near the locking ring should not be completely in contact. Figure 4 The gap at point e is designed to ensure that the locking ring can be stretched to the maximum extent when clamped, and the amount of stretching will not be reduced due to abnormal fit of the upper and lower clamps.

[0020] The hole spacing between the two holes of the buckle handle 3 will affect the tension of the buckle ring and needs to be adjusted appropriately according to the actual situation.

[0021] This device operates as follows: A straight section of the oil pipeline is selected as the target installation location. This section of the pipeline is cleaned to ensure the clamps can fully contact the outer surface of the pipeline. The clamping ring handles are rotated to separate the upper and lower clamp halves. The clamps are then placed at the target installation location. The clamping rings on both sides are placed in the clamping slots of the upper clamp. The clamping handles on both sides are reversed to their extreme positions, engaging with the lower clamp. The clamping rings are then tightened to achieve full clamping between the clamps and the pipeline. The strain gauges attached to the plate will experience the same strain as the pipeline through the clamped clamps and will transmit strain signals. A strain gauge signal processing and transmission module can be installed at the pre-drilled holes on the upper side of the clamps to transmit the signals, or a wired method can be used to acquire strain gauge data, thus realizing the acquisition of pipeline strain signals.

[0022] The above-described specific implementations can be partially adjusted by those skilled in the art in different ways without departing from the principles and purpose of this utility model. The scope of protection of this utility model is determined by the claims and is not limited to the above-described specific implementations. All implementation schemes within its scope are bound by this utility model.

Claims

1. A snap-fit ​​type aircraft fuel line strain measurement fixture device, characterized in that, include: A pair of upper clamping bodies and corresponding lower clamping bodies and their snap-fit ​​handles are respectively installed on the oil pipeline. The upper and lower clamping bodies are rotatably connected to each other, the lower clamping body is rotatably connected to the snap-fit ​​handle, and the snap-fit ​​handle is provided with a snap-fit ​​ring that snaps into the upper clamping body. The upper and lower clamping bodies, snap-fit ​​handles and snap-fit ​​rings are sequentially installed around the oil pipeline.

2. The snap-fit ​​aircraft oil pipeline strain measurement fixture device according to claim 1, characterized in that, A pair of strain gauge adhesive plates are provided between the two upper clamping bodies along the direction of the oil pipeline, and the strain gauges are attached to the strain gauge adhesive plates.

3. The snap-fit ​​aircraft oil pipeline strain measurement fixture device according to claim 2, characterized in that, The strain gauge bonding plate consists of a pair of thin sheets that are perpendicular to each other and have a central section for bonding the strain gauge.

4. The snap-fit ​​aircraft oil pipeline strain measurement fixture device according to claim 3, characterized in that, The thin sheet structure is at the same distance from the central axis of the pipe.

5. The snap-fit ​​aircraft oil pipeline strain measurement fixture device according to claim 2, characterized in that, The strain gauge mounting plate and the upper clamping body are interference-fitted.

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