Gear pair of fuel oil gear pump
A gear pair and gear pump technology, applied in the field of gear pairs, can solve problems such as complex gear shapes, and achieve the effects of strong wear resistance, high reliability, and long life
Inactive Publication Date: 2019-06-25
XIAN AERO ENGINE CONTROLS
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Problems solved by technology
Due to the complex shape of the gears, the gear pair requires high precision. At present, there is no gear pair for fuel gear pumps with good toughness, good impact resistance, and high load-carrying capacity.
Method used
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Embodiment Construction
[0015] A gear pair of a fuel gear pump is provided, the number of teeth Z, modulus and pressure angle α of the driving gear and the driven gear in the gear pair are the same, and the coincidence degree ε of the gear pair satisfies the relational expression:
[0016] ε=Z(tanα d -tanα) / π,
[0017] Among them, the addendum circle pressure angle
[0018] In addition, in the gear pair, the number of teeth Z, the pressure angle α, and the coincidence degree ε also satisfy the following relationship:
[0019]
[0020] The material of the driving gear and the driven gear is AHP10V powder metallurgy tool steel.
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The invention relates to a gear pair of a fuel oil gear pump. The tooth numbers Z, moduli m and pressure angles alpha of a driving gear and a driven gear in the gear pair are equal, and the formula ofthe overlap ratio epsilon of the gear pair is shown in the specification, wherein the tooth numbers Z, the moduli m, the pressure angles alpha and the overlap degree epsilon of the addendum circle pressure angle gear pair meet the following formula shown in the specification. The designed gears can meet the use requirements of the fuel oil pump at high pressure, high rotating speed and high flow,through long-test assessment, the abrasion resistance capacity of the gears is extremely high and is 5-10 times that of traditional material fuel pump gears, the service life is long, and the reliability is high.
Description
technical field [0001] The invention relates to a gear pair of a fuel gear pump. Background technique [0002] According to the working characteristics of the gear pair in the fuel pump, the tooth shape and material of the gear are required to meet the requirements of high strength, toughness and wear resistance. Due to the complex shape of the gears, the gear pair requires high precision. At present, there is no gear pair for fuel gear pumps with good toughness, good impact resistance, and high load-carrying capacity. At present, it mainly depends on gear materials to meet the requirements. Domestic gear materials mainly include 38CrMoAlA, 2Cr3WMoV, 20Cr3MoVA, etc., and foreign countries mainly include HM-9V, HM-10V, etc. Contents of the invention [0003] The purpose of the present invention is to provide a gear pair of a fuel gear pump with good wear resistance and impact resistance. [0004] The technical solution of the present invention: a gear pair of a fuel gear ...
Claims
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Login to View More IPC IPC(8): F04C15/00F04C18/18F02M37/04
Inventor 江学兵
Owner XIAN AERO ENGINE CONTROLS
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