Fuel oil conveying pump with floating type gear shaft
A gear shaft, floating technology, applied in the direction of rotary piston/swing piston pump components, rotary piston pumps, belts/chains/gears, etc., can solve the inconvenience of disassembly, affect the service life of the pump, and increase the number of fault points and other problems, to reduce the number of parts and the corresponding assembly process, prolong the service life, improve the effect of reliability
Active Publication Date: 2016-08-17
HUNAN OIL PUMP
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Problems solved by technology
[0002] The structure of the conventional fuel delivery pump is that the driving gear of the pump and the transmission shaft are driven through interference fit and pin-key connection. After the transmission shaft is formed as a whole, the pump gear cannot float axially, which makes the end faces of the pump body and pump cover easy to wear, thus affecting the service life of the pump, and it is inconvenient to disassemble
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[0022] In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the embodiments and accompanying drawings, and the contents mentioned in the embodiments are not intended to limit the present invention.
[0023] In the description of the present invention, it should be understood that the terms "first" and "second" are used for description purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined. In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can b...
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The invention provides a fuel oil conveying pump with a floating type gear shaft. The fuel oil conveying pump comprises a pump body, a rear cover plate, a front cover plate, a driving gear shaft and a driven gear shaft, the rear end of the driving gear shaft and the rear end of the driven gear shaft are rotatably mounted in shaft holes of the rear cover plate, the front end of the driving gear shaft and the front end of the driven gear shaft are rotatably mounted in shaft holes of the front end face of the pump body, a transmission shaft which extends in the axial direction is arranged at the front end of the driving gear shaft, and the transmission shaft penetrates out of a shaft hole of the front cover plate; a first containing cavity is formed among the end face of the rear end of the driving gear shaft, the end face of the rear end of the driven gear shaft and the rear cover plate, a second containing cavity is formed among the end face of the front end of the driven gear shaft, the end face of the pump body and the front cover plate, and a through hole penetrating through the front end and the rear end is formed in the driven gear shaft; the driving gear shaft is meshed with the driven gear shaft in the pump body through a gear, an oil inlet cavity is formed among the left side of the driving gear shaft, the left side of the driven gear shaft and the pump body, and an oil outlet cavity is formed among the right side of the driving gear shaft, the right side of the driven gear shaft and the pump body.
Description
technical field [0001] The invention relates to a fuel delivery pump. Background technique [0002] The structure of the conventional fuel delivery pump is that the driving gear of the pump and the transmission shaft are driven through interference fit and pin-key connection. After the transmission shaft is formed as a whole, the pump gear cannot axially float, which makes the end faces of the pump body and the pump cover easy to wear, thereby affecting the service life of the pump, and it is inconvenient to disassemble. Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and provide a gear-floating fuel pump. The fuel pump with this structure solves the problem that the pump gear cannot float along the axial direction during the operation of the conventional fuel pump. The possibility of scraping the end face of the pump body or pump cover is caused, which improves the reliability of the...
Claims
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IPC IPC(8): F04C2/14F04C15/00F16C3/02F16H55/17
CPCF04C2/14F04C15/00F16C3/02F16H55/17
Inventor 许仲秋刘行刘光明佘笑梅
Owner HUNAN OIL PUMP