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Method for determining gear pump tooth profile molded line and crescent gear pump

A determination method, gear pump technology, applied in the direction of pumps, pump components, rotary piston pumps, etc., can solve the problems of pressure pulsation, loud noise, etc., and achieve the effect of avoiding collisions

Active Publication Date: 2016-12-14
GREE ELECTRIC APPLIANCES INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a gear pump tooth profile determination method and an internal meshing gear pump to solve the problems of pressure pulsation and large noise in the prior art

Method used

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  • Method for determining gear pump tooth profile molded line and crescent gear pump
  • Method for determining gear pump tooth profile molded line and crescent gear pump
  • Method for determining gear pump tooth profile molded line and crescent gear pump

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Embodiment Construction

[0023] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.

[0024] Please refer to Figure 1 to Figure 4 , the present invention provides a method for determining the tooth profile of a gear pump, which is especially suitable for determining the profile of the inner and outer tooth profiles of a cycloidal internal meshing gear pump. Using this method, the shape of the inner or outer tooth profile, The size and the adjustment of the tooth surface clearance, so as to improve the pressure pulsation and noise.

[0025] When using the method in the present invention to determine the gear pump tooth profile line, at first provide at least three circles, that is, the first forming circle, the second forming circle and the tooth shape circle, and make the second forming circle and the first forming circle There is ...

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Abstract

The invention provides a method for determining gear pump tooth profile molded line and a crescent gear pump. The method includes: provided a first formation circle, a second formation circle and a tooth circle; an eccentric distance for geometric compensation is arranged between the second formation circle and the first formation circle; a fixed point is determined on the circumference of the second formation circle, in the circle or outside the circle, so that the second formation circle rotates around the center of the first formation circle on the premise of keeping the first formation circle immobile; the locus of the fixed point forms a first epicycloid; a first distance is used for vector amplification on the first epicycloid to obtain a second epicycloid; and an envelope line formed by the center of the tooth circle moving along the second epicycloid used as the tooth profile molded line of the gear pump. Through the above technical scheme, the method is convenient for adjusting the shape, size and tooth gap of the tooth profile, so as to avoid large noise and ripple due to collision caused by larger gap.

Description

technical field [0001] The invention relates to the field of gear pumps, in particular to a gear pump tooth profile determination method and an internal meshing gear pump. Background technique [0002] Gear pump is a commonly used hydraulic pump in hydraulic transmission system. According to the gear meshing form, it can be divided into two types: internal gear pump and external gear pump. [0003] The internal gear pump has only two moving parts: the inner rotor and the outer rotor. The inner rotor is the circular arc tooth connected to the main shaft, which drives the outer rotor to rotate in the same direction. When the gears on the inner and outer rotors are separated from each other, negative pressure is generated at the inlet of the internal meshing gear pump and liquid is sucked in. When the gears of the inner and outer rotors are embedded and engaged with each other at the outlet of the internal meshing gear pump, the liquid is squeezed out. The space volume change ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C15/00F04C2/08
CPCF04C2/084F04C15/00
Inventor 蔺维君卓明胜王晨光颜家桃何国栋谢镇洲廖东升谢蓉
Owner GREE ELECTRIC APPLIANCES INC
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