Power device and combined safety shaft
A safety shaft and combined technology, applied to the starting device with mechanical power storage, engine components, engine starting, etc., can solve the problems of unable to protect the engine, difficult to cut off the safety shaft, and unable to protect the starter in time, to achieve Improve the protection effect, improve reliability, and ensure the effect of torque transmission
Active Publication Date: 2018-10-02
AECC HUNAN AVIATION POWERPLANT RES INST
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- Application Information
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Problems solved by technology
[0003] The structure of the existing safety shaft is relatively simple, which is usually a columnar structure. In order to ensure that the safety shaft can transmit torque normally, its cross-sectional size is usually large, but this requires a large shearing torque to make the safety shaft be sheared. When the engine fails, the safety shaft is difficult to cut in time, and the starter cannot be protected in time; and when the starter fails, the shearing torque is difficult to cut the safety shaft, so the engine cannot be protected
Method used
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[0030] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted.
[0031] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of an icon to another component, these terms are used in this specification only for convenience, for example, according to the description in the accompanying drawings directions for the example described above. It will be appreciated that if the illustrated device is turned over so...
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The invention provides a power device and a combined safety shaft and relates to the technical field of engines. The combined safety shaft provided by the invention is used for connecting a starter and an engine. The combined safety shaft comprises a first shaft body, a transmission pin, a second shaft body and a mandrel. One end of the first shaft body is connected to the engine while an accommodating groove is formed in the end surface of the other end of the first shaft body. The transmission pin penetrates through the first shaft body radially and penetrates through the accommodating groove. The second shaft body is provided with a first end and a second end, the first end is connected to the starter and the second end penetrates into the accommodating groove and is provided with a single-direction transmission structure, the single-direction transmission structure is matched with the transmission pin, so that the second shaft body can drive the first shaft body to rotate in the single direction, and one end of the mandrel penetrates into the second shaft body axially and is connected to the second shaft body while the other end of the mandrel is connected to the transmission pin.
Description
technical field [0001] The present disclosure relates to the technical field of engines, in particular, to a power device and a combined safety shaft. Background technique [0002] The safety shaft is an important part connecting the starter and the engine, and is used to provide initial power for the transmitter so that the engine can start to work. The starter is generally connected to the engine through a safety shaft. When starting, if the engine breaks down (such as a shaft lock), the safety shaft will be cut off due to excessive torque, thereby protecting the starter. [0003] The structure of the existing safety shaft is relatively simple, which is usually a columnar structure. In order to ensure that the safety shaft can transmit torque normally, its cross-sectional size is usually large, but this requires a large shearing torque to make the safety shaft be sheared. When the engine fails, the safety shaft is difficult to cut in time, and the starter cannot be protec...
Claims
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IPC IPC(8): F02N15/02
CPCF02N15/02
Inventor 雷衍斌刘飞明李红梅宁凤莲赵建华
Owner AECC HUNAN AVIATION POWERPLANT RES INST