A special coupling tool for aviation magnet motor test

Abstract

The utility model discloses a kind of special coupling tool for aviation magneto test, comprising: bearing frame body, the bearing frame body is assembled on test bench, transmission shaft body is provided in the bearing frame body, transmission shaft body one end is connected with test motor output end, transmission shaft body setting in the bearing frame body is connected concentrically with magneto by connecting assembly, the connecting assembly includes shaft coupling body, transmission shaft butt joint groove is opened in the shaft coupling body, transmission shaft butt joint groove is connected with transmission shaft body butt joint. The special coupling tool for aviation magneto test can make the shaft coupling body in the magneto mounting seat body shell. Even if the shaft coupling falls off in extreme cases, it can also prevent the shaft coupling from flying out, avoid causing other injuries, and the shaft coupling is made of stainless steel, which is a hard connection. It can effectively prevent deformation and vibration during high-speed operation, improving the practicality and safety of the device.

Description

Technical Field

[0001] This utility model relates to the field of special connecting tooling for testing aircraft magneto motors, and more specifically, to a special connecting tooling for testing aircraft magneto motors. Background Technology

[0002] The ignition system is a crucial component of an aircraft piston engine. The starting and operation of a piston engine require an orderly, timely, and continuous electrical spark from the ignition system. As a core component of the aircraft piston engine ignition system, the performance of the aircraft magneto directly affects the engine's operation and reliability, and consequently, flight safety. To ensure the aircraft magneto meets operational requirements, according to the aircraft maintenance manual, it must be removed for regular maintenance and testing every 500 flight hours. After maintenance, the aircraft magneto's performance must be tested on magneto testing equipment to ensure it meets airworthiness requirements. During testing, an external motor must drive the magneto at high speed, with a maximum speed of 3000 rpm.

[0003] Existing magneto testing equipment has consistently faced challenges in aligning the magneto shafts with the motor shafts during the pre-test connection process. The main difficulty lies in the inability to achieve rapid alignment every time, requiring a significant amount of time for each test. Because perfect alignment between magneto and motor shafts is difficult, flexible connecting shafts are used to address the misalignment issue. However, this method limits high-speed testing, hindering the achievement of optimal testing results. Forcing high-speed testing risks damaging the magneto, and the flexible connecting shaft may even detach during high-speed operation, causing further damage. Utility Model Content

[0004] One objective of this invention is to provide a new technical solution for a special connecting tooling for testing aircraft magneto motors.

[0005] According to a first aspect of the present invention, a special connecting fixture for testing an aviation magneto is provided, comprising: a bearing bracket body, the bearing bracket body being assembled on a test bench, a transmission shaft body being disposed inside the bearing bracket body, one end of the transmission shaft body being connected to the output end of the test motor, and the transmission shaft body disposed inside the bearing bracket body being concentrically connected to the magneto through a connecting component;

[0006] The connecting assembly includes a coupling body, which has a drive shaft docking groove inside, and the drive shaft docking groove is docked with the drive shaft body. The coupling body also has a magneto impact coupling groove inside, and the magneto impact coupling groove is connected with the magneto impact coupling. A magneto mounting base body is mounted on the bearing bracket body. The magneto mounting base body is fitted onto the bearing bracket body and is sleeved on the outside of the drive shaft body, the coupling body, and the magneto rotor shaft.

[0007] Preferably, a fixing pin is inserted inside the bearing bracket body, and the fixing pin is inserted inside the transmission shaft body.

[0008] Preferably, the bottom end of the bearing bracket body is assembled to the surface of the test bench by bearing bracket fixing bolts.

[0009] Preferably, the bearing bracket body has a magneto mounting seat docking groove inside, the magneto mounting seat docking groove is connected to the left end connecting part of the magneto mounting seat body, and the right end connecting part of the magneto mounting seat body has a magneto docking groove inside, the magneto docking groove is docked and assembled with the magneto connecting part.

[0010] Preferably, the bearing bracket body has a magneto mounting seat fixing bolt hole inside, the magneto mounting seat fixing bolt is installed inside the magneto mounting seat fixing bolt hole, and the magneto mounting seat fixing bolt is installed inside the magneto mounting seat body. The magneto mounting seat body has a magneto mounting bolt hole inside, the magneto mounting bolt is installed inside the magneto mounting seat hole, and the magneto mounting bolt is installed inside the magneto connection part.

[0011] Preferably, the magneto mounting base body has a positioning pin hole inside, and the positioning pin hole is located inside the magneto connection part, and a positioning pin is inserted into the positioning pin hole.

[0012] 1. This utility model assembles the bearing housing body, drive shaft body, coupling body, drive shaft mating groove, magneto impact coupling groove, fixing pin, bearing housing fixing bolts, and magneto mounting base body through the cooperation of these components. This ensures the concentricity of the four parts, and the length of the magneto mounting base body meets the usage requirements. After the magneto is installed, the drive shaft body, coupling body, and magneto are tightly connected, effectively preventing the coupling body from detaching. This special connecting fixture for testing aerospace magneto assembles the bearing housing body, coupling body, magneto mounting base body, and magneto, ensuring concentricity for easy magneto testing. Furthermore, the coupling body is located within the magneto mounting base body housing, preventing it from flying out and causing further damage in extreme cases where it detaches. The coupling body is made of stainless steel, providing a rigid connection that effectively prevents deformation and vibration during high-speed operation, thus improving the practicality and safety of the device.

[0013] 2. This utility model utilizes the mating groove of the magneto mounting base, the fixing bolt holes of the magneto mounting base, and the positioning pin holes to assemble the magneto using the magneto mounting base body. When assembling the magneto using the magneto mounting base body, the left end of the magneto mounting base body is first aligned with the magneto mounting base mating groove inside the bearing bracket body. The fixing bolt holes of the magneto mounting base body are then used to securely connect the magneto mounting base body and the bearing bracket body. The magneto connecting part is then assembled into the magneto mating groove, and the fixing bolt holes penetrate to limit the connection between the magneto mounting base body and the magneto connecting part. This allows for a convenient and secure connection between the magneto mounting base body and the magneto, simplifying operation and ensuring a strong connection. When installing the magneto, the positioning pin holes and positioning pins are used to fix the magneto's position and direction. Fixing the magneto to the magneto mounting base body using the fixing bolt holes is even more convenient. This dedicated connection tool for testing aerospace magneto allows for rapid docking between the magneto and the test motor, and the hard connection ensures a convenient and secure connection, improving the practicality and stability of the device.

[0014] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0015] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0016] Figure 1 This is a front sectional view of the overall structure of this utility model;

[0017] Figure 2This is a frontal sectional view of a partial structure of this utility model;

[0018] Figure 3 This is a front sectional view of the overall structure of the magneto mounting base of this utility model;

[0019] Figure 4 This is a front view cross-sectional schematic diagram of the overall structure of the coupling body of this utility model.

[0020] The following are marked in the diagram: 211, bearing bracket body; 212, drive shaft body; 213, coupling body; 214, drive shaft mating groove; 215, magneto impact coupling groove; 216, fixing pin; 217, bearing bracket fixing bolt; 218, magneto mounting base body; 311, magneto mounting base mating groove; 312, magneto mounting base fixing bolt hole; 313, magneto mating groove; 314, magneto fixing bolt hole; 315, locating pin hole. Detailed Implementation

[0021] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0022] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0023] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0024] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0025] like Figure 1-4 As shown, one embodiment of this utility model is provided:

[0026] A special connecting tooling for testing aircraft magneto. The coupling body 213 used in this application is a product that can be directly purchased on the market. Its principle and connection method are existing technologies well known to those skilled in the art.

[0027] Includes: a bearing housing body 211, which is mounted on a test bench. A transmission shaft body 212 is installed inside the bearing housing body 211. One end of the transmission shaft body 212 is connected to the output end of the test motor. The transmission shaft body 212 installed inside the bearing housing body 211 is concentrically connected to the magneto through a connecting component.

[0028] The connecting assembly includes a coupling body 213, which has a drive shaft mating groove 214 inside, which is mated and connected to the drive shaft body 212. The coupling body 213 also has a magneto impact coupling groove 215 inside, which is connected to the magneto impact coupling. A magneto mounting base body 218 is mounted on the bearing bracket body 211. The magneto mounting base body 218 is mounted on the bearing bracket body 211 and is sleeved on the outside of the drive shaft body 212, the coupling body 213, and the magneto rotor shaft.

[0029] When using this special connection fixture for testing aviation magneto, assemble the bearing housing 211, coupling body 213, magneto mounting base 218, and magneto to ensure concentricity. The length of the magneto mounting base 218 meets the usage requirements. After the magneto is installed, the drive shaft body 212, coupling body 213, and magneto are tightly connected, effectively preventing the coupling body 213 from falling off. Furthermore, the coupling body 213 is located inside the housing of the magneto mounting base 218. Even in extreme cases where the coupling body 213 falls off, it can prevent it from flying out and causing other damage. In addition, the coupling body 213 is made of stainless steel and is a rigid connection, which effectively prevents deformation and vibration during high-speed operation.

[0030] A fixing pin 216 is inserted inside the bearing bracket body 211, and the fixing pin 216 is inserted inside the drive shaft body 212.

[0031] The function of the fixing pin 216 is to fix the transmission shaft body 212 during the installation of the coupling body 213 and the magneto, to prevent it from rotating, and to facilitate installation.

[0032] The bottom end of the bearing bracket body 211 is assembled onto the surface of the test bench via bearing bracket fixing bolts 217;

[0033] The bottom end of the bearing bracket body 211 is assembled onto the surface of the test bench by bearing bracket fixing bolts 217. The operation is simple and the connection is tight, making it easy to disassemble and assemble.

[0034] The bearing housing body 211 has a magneto mounting base docking groove 311 inside, which is connected to the left end connecting part of the magneto mounting base body 218. The right end connecting part of the magneto mounting base body 218 has a magneto docking groove 313 inside, which is docked and assembled with the magneto connecting part.

[0035] The bearing bracket body 211 has a magneto mounting base fixing bolt hole 312 inside, and a magneto mounting base fixing bolt is installed inside the magneto mounting base fixing bolt hole 312. The magneto mounting base fixing bolt is installed inside the magneto mounting base body 218. The magneto mounting base body 218 has a magneto fixing bolt hole 314 inside, and a magneto fixing bolt is installed inside the magneto mounting bolt hole 314. The magneto fixing bolt is installed inside the magneto connection part.

[0036] When using this special connection fixture for testing aircraft magneto, when assembling the magneto using the magneto mounting base body 218, first align the left end of the magneto mounting base body 218 with the magneto mounting base mating groove 311 inside the bearing bracket body 211. Use the magneto mounting base fixing bolt holes 312 to securely connect the magneto mounting base body 218 and the bearing bracket body 211. Then, assemble the magneto connection part into the magneto mating groove 313. The magneto fixing bolt holes 314 penetrate and are installed into the magneto mounting base body 218 and the magneto connection part for limiting. This allows for convenient and secure fastening of the magneto mounting base body 218 and the magneto, making the operation simple and the connection strong.

[0037] The magneto mounting base body 218 has a positioning pin hole 315 inside, and the positioning pin hole 315 is located inside the magneto connection part, and a positioning pin is inserted into the positioning pin hole 315.

[0038] When installing the magneto, the position and orientation of the magneto are fixed by cooperating with the positioning pin through the positioning pin hole 315. It is more convenient to fix the magneto to the magneto mounting base body 218 using the magneto fixing bolt hole 314.

[0039] Working principle:

[0040] When using this special connection fixture for testing aviation magneto, assemble the bearing housing 211, coupling body 213, magneto mounting base 218, and magneto to ensure concentricity. The length of the magneto mounting base 218 meets the usage requirements. After the magneto is installed, the drive shaft body 212, coupling body 213, and magneto are tightly connected, effectively preventing the coupling body 213 from falling off. Furthermore, the coupling body 213 is located inside the housing of the magneto mounting base 218. Even in extreme cases where the coupling body 213 falls off, it can prevent it from flying out and causing other damage. In addition, the coupling body 213 is made of stainless steel and is a rigid connection, which effectively prevents deformation and vibration during high-speed operation.

[0041] When using this special connection fixture for testing aviation magneto, when assembling the magneto using the magneto mounting base body 218, first align the left end of the magneto mounting base body 218 with the magneto mounting base mating groove 311 inside the bearing bracket body 211. Use the magneto mounting base fixing bolt holes 312 to securely connect the magneto mounting base body 218 and the bearing bracket body 211. Then, assemble the magneto connection part into the magneto mating groove 313. The magneto fixing bolt holes 314 penetrate and are installed into the magneto mounting base body 218 and the magneto connection part for limiting. This allows for convenient and secure fastening of the magneto mounting base body 218 and the magneto. The operation is simple and the connection is firm. When installing the magneto, the position and direction of the magneto are fixed by cooperating with the positioning pin holes 315 and positioning pins. It is even more convenient to fix the magneto onto the magneto mounting base body 218 using the magneto fixing bolt holes 314. The operation is then complete.

[0042] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A special connecting fixture for testing aircraft magneto, comprising: The bearing housing body (211) is characterized in that: the bearing housing body (211) is mounted on a test bench, and a transmission shaft body (212) is provided inside the bearing housing body (211). One end of the transmission shaft body (212) is connected to the output end of the test motor, and the transmission shaft body (212) provided inside the bearing housing body (211) is concentrically connected to the magneto through a connecting component. The connecting assembly includes a coupling body (213), which has a drive shaft docking groove (214) inside, which is connected to the drive shaft body (212). The coupling body (213) also has a magneto impact coupling groove (215) inside, which is connected to the magneto impact coupling. A magneto mounting base body (218) is mounted on the bearing bracket body (211). The magneto mounting base body (218) is mounted on the bearing bracket body (211) and is sleeved on the outside of the drive shaft body (212), the coupling body (213), and the magneto rotor shaft.

2. The special connecting fixture for testing aircraft magneto as described in claim 1, characterized in that: The bearing housing body (211) is provided with a fixing pin (216) inserted inside, and the fixing pin (216) is inserted inside the transmission shaft body (212).

3. The special connecting fixture for testing aircraft magneto as described in claim 1, characterized in that: The bottom end of the bearing bracket body (211) is assembled onto the surface of the test bench by bearing bracket fixing bolts (217).

4. The special connecting fixture for testing aircraft magneto as described in claim 1, characterized in that: The bearing bracket body (211) has a magneto mounting seat docking groove (311) inside. The magneto mounting seat docking groove (311) is connected to the left end connecting part of the magneto mounting seat body (218). The right end connecting part of the magneto mounting seat body (218) has a magneto docking groove (313) inside. The magneto docking groove (313) is docked and assembled with the magneto connecting part.

5. The special connecting fixture for testing aircraft magneto as described in claim 1, characterized in that: The bearing bracket body (211) has a magneto mounting base fixing bolt hole (312) inside, and a magneto mounting base fixing bolt is installed inside the magneto mounting base fixing bolt hole (312). The magneto mounting base fixing bolt is installed inside the magneto mounting base body (218). The magneto mounting base body (218) has a magneto fixing bolt hole (314) inside, and a magneto fixing bolt is installed inside the magneto mounting bolt hole (314). The magneto fixing bolt is installed inside the magneto connection part.

6. The special connecting fixture for testing aircraft magneto as described in claim 1, characterized in that: The magneto mounting base body (218) has a positioning pin hole (315) inside, and the positioning pin hole (315) is located inside the magneto connection part, and a positioning pin is inserted into the positioning pin hole (315).

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