A nozzle oil inlet joint detection tool

Abstract

The utility model discloses a kind of nozzle oil inlet joint detection tool, including base platform, nozzle support seat, nozzle positioning assembly, nozzle fixing screw, nozzle pressing mechanism, semicircle clamping groove plate, head detection frame, first joint detection frame and second joint detection frame;Nozzle is fixed on support seat, and it is ensured that installation posture is stable by positioning assembly and pressing mechanism;Head detection frame sets round plate measuring head, and with nozzle head surface contact, and first and second joint detection frame sets conical measuring head, and with nozzle joint point contact, for detecting the positional relationship between joint and nozzle body;Each detection frame is connected with base platform by guide rail structure, and position can be adjusted and can be locked.The tool is simple in structure, stable in positioning, accurate in measurement, can realize the rapid detection of fuel nozzle joint position degree, and is suitable for the detection requirement after batch maintenance.

Description

Technical Field

[0001] This utility model relates to the field of aircraft engine maintenance technology, and in particular to a nozzle oil inlet connector testing fixture. Background Technology

[0002] Fuel nozzles are one of the key components in aero engines, with complex structures and high dimensional accuracy requirements. During maintenance, nozzle components such as fuel inlet connectors often need to be disassembled and then welded to achieve in-situ repair. To ensure that the repaired fuel nozzles can be successfully installed into the engine system, their post-welding positional accuracy needs to be checked.

[0003] In the existing technology, the welding positioning of fuel nozzles mainly relies on tooling limit fit. However, due to slight differences in the size of the components and assembly errors, in-situ positioning cannot be achieved during the welding process, causing the joint to shift relative to the nozzle body, thereby affecting the assembly accuracy and safety of the nozzle.

[0004] For positional accuracy testing, high-precision equipment such as coordinate measuring machines are commonly used. Although the testing accuracy is high, there are problems such as high cost, low testing efficiency, and inability to meet the needs of large-scale maintenance and testing, which seriously restricts the efficiency of nozzle maintenance and quality control.

[0005] Therefore, there is an urgent need for a nozzle position detection fixture that is simple in structure, easy to operate, and suitable for batch testing, in order to meet the actual needs of efficient and high-precision testing at maintenance sites. Utility Model Content

[0006] The purpose of this invention is to provide a nozzle oil inlet connector inspection fixture to solve the technical problems in the prior art, such as the inability to position the nozzle in situ after welding, low efficiency of three-coordinate inspection, and high cost.

[0007] This utility model is achieved using the following technical solution: a nozzle inlet connector inspection fixture, characterized in that it includes a base platform, a nozzle support, a nozzle positioning assembly, a nozzle fixing screw, a nozzle clamping mechanism, a semi-circular slot plate, a head inspection frame, a first connector inspection frame, and a second connector inspection frame; the nozzle support is disposed on the base platform and is used to support the nozzle body; the nozzle positioning assembly is used to achieve the initial positioning of the nozzle body; the nozzle fixing screw is used to fix the nozzle body to the nozzle support; the nozzle clamping mechanism is used to press the nozzle head against the semi-circular slot plate; the head inspection frame includes a measuring slide and a circular plate measuring head bracket, the front end of the circular plate measuring head bracket is provided with a circular plate probe for surface measurement by contacting the plane of the nozzle head; the first connector inspection frame includes a first connector guide seat and a conical probe bracket; the second connector inspection frame includes a second connector guide seat and the conical probe bracket; the front end of the conical probe bracket is provided with a conical probe for point measurement of the nozzle connector position.

[0008] Furthermore, the base platform is equipped with a guide rail structure, and the measuring slide, the first connector guide seat, and the second connector guide seat are all positioned and locked in place through the guide rail structure.

[0009] Furthermore, the circular plate measuring head bracket is a modified micrometer structure, and its knob can adjust the contact distance between the circular plate measuring head and the nozzle head to achieve surface contact measurement.

[0010] Furthermore, the circular plate measuring head bracket is mounted on the base platform via the measuring slide, and a sliding guide rail connection structure is provided between the measuring slide and the base platform, with the position locked by fastening screws.

[0011] Furthermore, the nozzle clamping mechanism is a rotary screw structure, which can provide adjustable axial clamping force to stabilize the nozzle body.

[0012] Furthermore, the nozzle clamping mechanism is a rotary screw structure, which is set perpendicular to the nozzle head and located on the slotted side of the semi-circular slot plate.

[0013] Furthermore, the first connector guide seat and the second connector guide seat are respectively disposed on opposite sides of the base platform and located in front of the nozzle support seat. The two are arranged in a mirror symmetrical manner with respect to the nozzle body, and are used to detect the two connector ends of the nozzle respectively.

[0014] The nozzle inlet connector testing fixture of this utility model has the following advantages: With its modular design, the testing frame can be quickly adjusted and position data can be read quickly, significantly improving testing efficiency and making it suitable for large-scale operations at maintenance sites.

[0015] The head inspection uses a circular plate surface measurement structure, while the joint inspection uses a conical point measurement method. The combination of surface and point measurement provides comprehensive coverage and effectively improves inspection accuracy and consistency.

[0016] The limiting system, consisting of a nozzle support, positioning components, clamping mechanism, and semi-circular slot plate, ensures the stability of the nozzle's posture during the testing process, preventing positional deviations from affecting the measurement.

[0017] The test frame has an adjustable structure, making it compatible with different nozzle models. It is highly versatile and easy to promote and apply. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a nozzle inlet connector testing fixture; Figure 2 This is a schematic diagram of the nozzle support connection structure; In the figure, 1-conical probe bracket, 2-first connector guide seat, 3-second connector guide seat, 4-circular plate measuring head bracket, 5-semi-circular slot plate, 6-base platform, 7-nozzle support seat, 8-measuring slide, 9-nozzle body, 10-nozzle clamping mechanism, 11-nozzle fixing screw, 12-nozzle positioning assembly. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. Example

[0022] like Figure 1 As shown, this embodiment provides a nozzle inlet connector testing fixture, including a base platform 6, a nozzle support seat 7, a nozzle positioning assembly 12, a nozzle fixing screw 11, a nozzle clamping mechanism 10, a semi-circular slot plate 5, a nozzle body 9, a head testing frame, a first connector testing frame, and a second connector testing frame.

[0023] The base platform 6 serves as the foundation for the installation and fixation of the entire tooling, supporting other components and ensuring the overall structural stability of the measurement system. A nozzle support 7 is mounted on it to support the main body of the nozzle body 9.

[0024] The nozzle is initially positioned using the nozzle positioning assembly 12, and then the nozzle 9 is securely locked in place using the nozzle fixing screw 11 to prevent minor displacement during measurement and ensure the accuracy of the measurement results. The nozzle head is inserted into the limiting groove of the semi-circular slot plate 5 and is axially pressed and fixed by the nozzle clamping mechanism 10, forming a three-point limiting support, which further enhances the rigidity and stability of the nozzle posture.

[0025] The head inspection frame is installed in front of the base platform 6 and is used to inspect the spatial relationship between the nozzle head and the nozzle connector. The head inspection frame consists of a measuring slide 8 and a circular plate measuring head bracket 4. The measuring slide 8 is adjustablely connected to the base platform 6 to adjust the inspection position; the circular plate measuring head bracket 4 is a modified micrometer structure with a circular plate measuring head installed at the front end, which forms surface contact with the plane of the nozzle head to determine whether the nozzle head is skewed or warped.

[0026] The first connector inspection frame is installed on the front side of the base platform 6 and consists of a first connector guide seat 2 and a conical probe bracket 1. The second connector inspection frame is located on the other side and consists of a second connector guide seat 3 and another conical probe bracket 1. The front end of the conical probe bracket 1 is equipped with a conical probe, which is adjusted in front and back position by a micrometer knob so that its tip contacts the welding areas of the first and second connectors of the nozzle, respectively, to achieve precise point measurement of spatial position.

[0027] During measurement, the operator sequentially adjusts the positions of the circular plate measuring head support 4 and the conical measuring head support 1 to bring the measuring head into contact with the corresponding part of the nozzle, and reads the changes in the micrometer readings. By combining the measurement data from the head and joint positions, the operator determines whether the nozzle welding repair has achieved the in-situ accuracy requirements.

[0028] Each testing bracket and base platform 6 features an adjustable mounting structure with screw locking, accommodating various models and sizes of fuel nozzles and offering excellent modular expandability. This fixture is not only suitable for rapid testing of finished parts but can also be integrated into repair processes for unified operation. During nozzle welding repair, phased testing allows for real-time monitoring of positional changes, timely correction of welding deviations, and ensures the nozzle can be successfully assembled into the engine.

[0029] The above embodiments describe the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Modifications and variations made by those skilled in the art without departing from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A nozzle inlet connector testing fixture, characterized in that, The system includes a base platform (6), a nozzle support (7), a nozzle positioning assembly (12), a nozzle fixing screw (11), a nozzle clamping mechanism (10), a semi-circular slot plate (5), a head inspection frame, a first connector inspection frame, and a second connector inspection frame. The nozzle support (7) is mounted on the base platform (6) and is used to support the nozzle body (9). The nozzle positioning assembly (12) is used to achieve the initial positioning of the nozzle body (9). The nozzle fixing screw (11) is used to fix the nozzle body (9) to the nozzle support (7). The nozzle clamping mechanism... (10) is used to press the nozzle head onto the semi-circular slot plate (5); the head detection frame includes a measuring slide (8) and a circular plate measuring head bracket (4), the front end of the circular plate measuring head bracket (4) is provided with a circular plate probe, which is used to make surface measurements by contacting the plane of the nozzle head; the first connector detection frame includes a first connector guide seat (2) and a conical probe bracket (1); the second connector detection frame includes a second connector guide seat (3) and the conical probe bracket (1); the front end of the conical probe bracket (1) is provided with a conical probe, which is used to perform point measurements on the nozzle connector position.

2. The nozzle inlet connector testing fixture according to claim 1, characterized in that, The base platform (6) is provided with a guide rail structure. The measuring slide (8), the first connector guide seat (2), and the second connector guide seat (3) are all adjusted in position and can be locked and fixed through the guide rail structure.

3. The nozzle inlet connector testing fixture according to claim 1, characterized in that, The circular plate measuring head bracket (4) is a micrometer modified structure. Its knob can adjust the contact distance between the circular plate measuring head and the nozzle head to achieve surface contact measurement.

4. The nozzle inlet connector testing fixture according to claim 1, characterized in that, The circular plate measuring head bracket (4) is installed on the base platform (6) via the measuring slide (8). A sliding guide rail connection structure is provided between the measuring slide (8) and the base platform (6), and the position is locked by fastening screws.

5. The nozzle inlet connector testing fixture according to claim 1, characterized in that, The nozzle clamping mechanism (10) is a rotary screw structure that can provide adjustable axial clamping force to stabilize the nozzle body (9).

6. The nozzle inlet connector testing fixture according to claim 1, characterized in that, The nozzle clamping mechanism (10) is a rotary screw structure, which is set perpendicular to the nozzle head and located on the slotted side of the semi-circular slot plate (5).

7. The nozzle inlet connector testing fixture according to claim 1, characterized in that, The first connector guide seat (2) and the second connector guide seat (3) are respectively disposed on opposite sides of the base platform (6) and located in front of the nozzle support seat (7). The two are arranged in a mirror symmetrical manner relative to the nozzle body (9) and are used to detect the two connector ends of the nozzle respectively.

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