Static torque test device for flying and attaching casing shell
By designing a static torque testing device for the flight attachment casing with a purely mechanical structure, and applying static torque using lever weights, the problems of cumbersome and costly existing testing methods are solved. This achieves lightweight and efficient static torque testing, meeting the reliability verification requirements of the flight attachment casing.
Patent Information
- Application Number
- CN202423074991.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-12
AI Technical Summary
Existing static torque testing methods for air-attached casings require dedicated test benches, are cumbersome to operate, and involve significant investment, making it difficult to meet the testing requirements for lightweight and efficient operation.
A static torque testing device for the fuselage casing was designed, consisting of a stand, a fixed base, a plug rod, an adapter, a connecting device, and weights. It adopts a purely mechanical structure and applies static torque through a lever and weight method, which simplifies the testing process and avoids the use of hydraulic and electrical controls.
It achieves efficient and reliable static torque testing without prior investment in a test bench. It has a stable structure, occupies little space, is easy to install, and provides reliable torque values that can be changed at any time, making it suitable for a variety of test projects.
Smart Images
Figure CN223624022U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of aircraft structural testing technology, specifically relating to a static torque testing device for an aircraft attachment casing. Background Technology
[0002] The aircraft's accessory gearbox is part of the aircraft's propulsion system and an important component of the accessory transmission system. It is a gearbox with multiple accessory mounting seats, and its main function is to transfer the engine's output power to the aircraft accessories, or to transfer the starting power of the DC generator to the engine, thus playing a role in energy transfer.
[0003] With the increase in thrust-to-weight ratio of aero engines, the fly-attachment casing is further developing towards high speed, heavy load, and light weight. In order to verify the working reliability of the designed fly-attachment casing, the product must undergo tests such as static torque test on the test bench to verify the quality of design and manufacturing.
[0004] Existing testing methods mostly rely on dedicated test benches for aircraft attachment casings and apply torque through hydraulic and electronic control methods. The operation is relatively cumbersome, and the investment in dedicated test benches is substantial. Utility Model Content
[0005] Purpose of the utility model: In order to verify the working reliability of the designed fly attachment casing, the utility model provides a static torque test device for the fly attachment casing shell. It does not require the investment of a test bench in the early stage and uses a relatively simple and reliable mechanical structure to meet the requirements of the static torque test of the fly attachment casing.
[0006] Technical Solution: To achieve the above-mentioned utility model objective, a static torque testing device for a flight attachment casing is proposed. The testing device consists of a stand, a fixed base, a plug rod, an adapter, a connecting device, and weights. The stand is used to connect and fix the flight attachment casing. The fixed base is fixed at the middle position of the top of the stand. The adapter and the input shaft end of the flight attachment casing are aligned with the plug holes on the fixed base and the connecting base, and the plug rod is inserted to keep the input shaft of the flight attachment casing stationary. Then, the connecting device is installed into the spline sleeve on the flight attachment casing. The lever arm of the connecting device is kept horizontal, and the center distance between the two holes of the lever arm is a set value. Finally, according to the required static torque, weights of appropriate mass are placed on the tray to realize the setting of the static torque test for the flight attachment casing.
[0007] Furthermore, the stand is used to install and fix the product; the main support is welded from square steel, and two legs are horizontally arranged at the bottom. Square steel plates are welded to both sides of the legs for installing and fixing the stand.
[0008] Furthermore, triangular reinforcing ribs are welded at the corners of the outriggers and the support frame to stabilize the structure.
[0009] Furthermore, the main support includes left and right supports, each equipped with a left and right hanging lug, and an upper pull rod on the upper part of the main support. All three are connected to the joint bearings on the flight attachment casing, thereby suspending and fixing the product on the stand.
[0010] Furthermore, the connecting device includes a connecting shaft, a lever arm, a limit screw, a hanging rod, a tray, and a nut; the outer spline section of the connecting shaft meshes with the inner spline on the product's drive shaft, and the hexagonal hole of the lever arm connects to the hexagonal shaft section of the connecting shaft to transmit the torque on the lever arm. After connecting the lever arm to the connecting shaft, the limit screw is screwed in to fix it and prevent the lever arm from sliding off; the other end of the lever arm is provided with a through hole for connecting to the hanging rod, the hanging rod is perpendicular to the lever arm, and is connected and fixed to the tray at the bottom by a nut.
[0011] Furthermore, the mounting base is used to fix the input shaft of the fly-attached housing to the test bench and, through the insertion rod, keep the input shaft stationary to meet the requirements of the static torque test. The mounting base is placed in the middle of the bench through the mounting bracket and the lateral position of the mounting base is limited by the limiting groove below. The fixing hole is used to insert screws to fix the mounting base to the bench. The insertion rod hole on the fixing rod is used to align with the insertion rod hole on the adapter and insert the insertion rod to limit the rotation of the product input shaft.
[0012] Furthermore, the adapter is connected and fixed to the end face of the product input shaft by the adapter plate. The adapter plate is designed with fixing holes and positioning holes around its perimeter that correspond to the end face of the product input shaft, for connecting and fixing the adapter plate to the input shaft.
[0013] Furthermore, the connecting shaft is used to connect to the drive shaft on the product, transmitting torque to the product's drive shaft; the spline section is an external spline that meshes with the internal spline on the product's drive shaft; the limiting end face is used to limit the position of the lever arm; the other end of the connecting shaft is a hexagonal shaft that mates with the hexagonal hole on the lever arm; the threaded hole on the end face is used to install the limiting screw. After installation, the lever arm and the connecting shaft are fixed together to prevent slippage during the test.
[0014] Technical Advantages: This utility model employs a purely mechanical structure, avoiding the use of hydraulic or electrical control test benches. It is stable, reliable, and unaffected by other factors as it does not utilize electricity, pneumatics, or hydraulics. The test bench frame uses a welded square steel structure and is designed with support legs and reinforcing ribs, resulting in structural stability. Compared to a standard test bench, it occupies less space and can also serve as a fixed frame for other test items on the flight-attached casing product. The connecting device has a simple structure, is easy to install, and has good versatility, allowing for easy changes in the direction of torque application. The use of a lever-weight system provides convenient and quick application of static torque, with the torque value controlled by the weight of the weights, ensuring stability and reliability. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 Schematic diagram of the static torque test device for the fuselage casing;
[0017] Figure 3 This is a schematic diagram of the platform of this utility model;
[0018] Figure 4 This is a schematic diagram of the connecting device of this utility model;
[0019] Figure 5 This is a schematic diagram of the fixing base of this utility model;
[0020] Figure 6 This is a schematic diagram of the adapter of this utility model;
[0021] Figure 7 This is a schematic diagram of the connecting shaft of this utility model.
[0022] The components are as follows: 1. Flight receiver; 2. Stand; 3. Mounting base; 4. Insert rod; 5. Adapter; 6. Connecting device; 7. Weight; 2-1. Support leg; 2-2. Bracket; 2-3. Left mounting lug; 2-4. Upper pull rod; 2-5. Right mounting lug; 3-1. Fixing hole I; 3-2. Mounting frame; 3-3. Fixing rod; 3-4. Insert rod hole I; 3-5. Limiting groove; 5-1. Fixing hole II 5-2, Positioning hole; 5-3, Insertion hole II; 5-4, Adapter block; 5-5, Adapter plate; 6-1, Connecting shaft; 6-2, Lever arm; 6-3, Limiting screw; 6-4, Hanging rod; 6-5, Tray; 6-6, Nut; 6-1-1, Spline section; 6-1-2, Smooth rod section; 6-1-3, Limiting end face; 6-1-4, Hexagonal shaft; 6-1-5, Threaded hole. Detailed Implementation
[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings or specific implementation examples. It should be noted that some (but not all) of the disclosed examples are shown in the drawings. In fact, many different examples can be described, and these examples should not be construed as limited to the examples set forth herein. Rather, these examples are described to better demonstrate the positive effects of this utility model, and all aspects not detailed herein are considered to be well-known or conventional techniques in the art.
[0024] A static torque test device for the flight-attached casing was designed during the specific implementation process; see Appendix. Figure 1 , 2The overall structure consists of a stand 2, a fixed base 3, a plug rod 4, an adapter 5, a connecting device 6, and weights 7. The stand 2 is used to connect and fix the attachment housing 1. The fixed base 3 is fixed to the middle of the top of the stand with four screws. The adapter 5 is aligned with the input shaft end of the attachment housing, with the plug holes on the fixed base and connecting base, and the plug rod is inserted to keep the input shaft of the attachment housing stationary. The connecting device 6 is then loaded in the direction shown in the diagram, ensuring that the transmission gear of the attachment housing is not unloaded, and inserted into the spline sleeve on the attachment housing. The lever arm of the connecting device 6 is kept horizontal, and the center distance between the two holes of the lever arm 6-2 is 1m. Finally, according to the required static torque, weights 7 of appropriate mass are placed on the tray, thus setting up the static torque test for the attachment housing.
[0025] Figure 3 This is a schematic diagram of the test stand, used to install and fix the product. The main support is welded from 120×120 square steel. Two legs 2-1 are set horizontally at the bottom. Square steel plates are welded on both sides of the legs for installing and fixing the stand. Triangular reinforcing ribs are welded at the corners of the legs and the support to stabilize the structure. The support has left hanging ears 2-3 and right hanging ears 2-5 on the left and right sides, and an upper pull rod 2-4 on the upper part. The three are connected to the joint bearings on the flight attachment casing 1, thereby suspending and fixing the product on the stand.
[0026] Figure 4 This is a schematic diagram of the connection device of the test apparatus, including a connecting shaft 6-1, a lever arm 6-2, a limiting screw 6-3, a hanging rod 6-4, a tray 6-5, and a nut 6-6. The external spline section of the connecting shaft meshes with the internal spline on the product's drive shaft. The hexagonal hole of the lever arm connects to the hexagonal shaft section of the connecting shaft, transmitting the torque on the lever arm. After connecting the lever arm to the connecting shaft, the limiting screw 6-3 is screwed in completely to prevent the lever arm from slipping off. The other end of the lever arm has a through hole for connecting to the hanging rod. The hanging rod is perpendicular to the lever arm and is connected and fixed to the tray 6-5 at the bottom by the nut 6-6.
[0027] Figure 5 This is a schematic diagram of the mounting base for the testing apparatus. After being fixed to the test bench, it uses a plug rod to keep the input shaft of the fly-mounted housing stationary, meeting the requirements of the static torque test. The mounting base is placed in the middle of the bench via a mounting bracket, and its lateral position is limited by a limiting groove below. Fixing hole 3-1 is used to insert screws to secure the mounting base to the bench. The plug rod hole on the fixing rod is used to align with the plug rod hole on the adapter, inserting the plug rod 4 to restrict the rotation of the product's input shaft.
[0028] Figure 6This is a schematic diagram of the adapter. The adapter is fixed to the end face of the product input shaft by the adapter plate 5-5. The adapter plate 5-5 is designed with fixing holes II 5-1 and positioning holes 5-2 around its perimeter, corresponding to the end face of the product input shaft, for connecting and fixing the adapter plate to the input shaft. The insertion hole II 5-3 on the adapter block 5-4 corresponds to the insertion hole I on the fixed base.
[0029] Figure 7 This is a schematic diagram of the connecting shaft, used to connect to the drive shaft on the product and transmit torque to it. Spline segment 6-1-1 is an external spline that meshes with the internal spline on the product's drive shaft; the limiting end face 6-1-3 is used to limit the position of the lever arm; the other end of the connecting shaft is a hexagonal shaft that mates with the hexagonal hole on the lever arm; the threaded hole on the end face is used to install the limiting screw 6-3. After installation, the lever arm and the connecting shaft are fixed together to prevent slippage during testing.
[0030] The above specific embodiments or examples are only used to explain the technical solutions of this utility model and are not intended to limit this application. Parts not described in detail are considered to be conventional technical means or common knowledge in the field. It can be understood by those skilled in the art that, based on the design concept of this application, adaptive modifications can be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. These modifications, equivalent substitutions, and adaptive improvements do not depart from the technical essence of this utility model and should all be covered within the protection scope of this application.
Claims
1. A static torque testing device for a flight-attached casing, characterized in that, The test apparatus consists of a frame, a fixed base, a plug rod, an adapter, a connecting device, and weights. The frame is used to connect and fix the attachment housing. The fixed base is fixed at the top center of the frame. The adapter and the input shaft end of the attachment housing are aligned with the plug holes on the fixed base and the connecting base, and the plug rod is inserted to keep the input shaft of the attachment housing stationary. The connecting device is then installed into the spline sleeve on the attachment housing, with the lever arm of the connecting device kept horizontal and the center distance between the two ends of the lever arm being a set value. Finally, according to the required static torque, weights of appropriate mass are placed on the tray to achieve the static torque test setup for the attachment housing.
2. The static torque testing device for a flight attachment casing as described in claim 1, characterized in that, The stand is used to install and fix the product; the main support is welded from square steel, and there are two horizontal legs at the bottom. Square steel plates are welded to both sides of the legs for installing and fixing the stand.
3. The static torque testing device for a flight attachment casing as described in claim 2, characterized in that, Triangular reinforcing ribs are welded at the corners where the outriggers meet the main support.
4. The static torque testing device for a flight-attached casing as described in claim 2, characterized in that, The main support includes left and right supports, each with a left and right mounting lug. An upper pull rod is provided on the upper part of the main support. All three are connected to the joint bearings on the flight attachment casing, thereby suspending and fixing the product on the stand.
5. The static torque testing device for a flight attachment casing as described in claim 1, characterized in that, The connecting device includes a connecting shaft, a lever arm, a limit screw, a hanging rod, a tray, and a nut. The outer spline section of the connecting shaft meshes with the inner spline on the product's drive shaft. The hexagonal hole of the lever arm connects to the hexagonal shaft section of the connecting shaft to transmit the torque on the lever arm. After connecting the lever arm to the connecting shaft, the limit screw is screwed in for fixation. The other end of the lever arm has a through hole for connecting to the hanging rod. The hanging rod is perpendicular to the lever arm and is connected and fixed to the tray at the bottom via a nut.
6. The static torque testing device for a flight-attached casing as described in claim 5, characterized in that, The connecting shaft is used to connect the drive shaft on the product and transmit torque to the product's drive shaft; the spline section is an external spline that meshes with the internal spline on the product's drive shaft; the limiting end face is used to limit the position of the lever arm; the other end of the connecting shaft is a hexagonal shaft that mates with the hexagonal hole on the lever arm; the threaded hole on the end face is used to install the limiting screw, and after installation, the lever arm and the connecting shaft are fixed together.
7. The static torque testing device for a flight attachment casing as described in claim 1, characterized in that, The mounting base is used to fix the input shaft of the fly-attach housing to the test bench and, through the insertion rod, keeps the input shaft stationary. The mounting base is placed in the middle of the bench by the mounting bracket and the lateral position of the mounting base is limited by the limiting groove below. The fixing hole is used to insert screws to fix the mounting base to the bench. The insertion rod hole on the fixing rod is used to align with the insertion rod hole on the adapter and insert the insertion rod to limit the rotation of the product input shaft.
8. The static torque testing device for a flight-attached casing as described in claim 1, characterized in that, The adapter is fixed to the end face of the product input shaft by the adapter plate. The adapter plate is designed with fixing holes and positioning holes around its perimeter that correspond to the end face of the product input shaft, for connecting and fixing the adapter plate to the input shaft.