CN102678829B - Spiral gear with circular tooth profile and for hydraulic device - Google Patents
Spiral gear with circular tooth profile and for hydraulic device Download PDFInfo
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- CN102678829B CN102678829B CN201210167947.2A CN201210167947A CN102678829B CN 102678829 B CN102678829 B CN 102678829B CN 201210167947 A CN201210167947 A CN 201210167947A CN 102678829 B CN102678829 B CN 102678829B
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- line segment
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Abstract
The invention belongs to mechanical parts and particularly relates to a spiral gear with the circular tooth profile and for a hydraulic device. The spiral gear comprises a driving circular spiral gear (1) and a driven circular spiral gear (2). The tooth profile (1-1 and 1-2) of the driving circular spiral gear and the driven circular spiral gear is composed of a tooth top protruding circular segment (BC), a tooth root recessed circular segment (EG) and a transition curve line segment (CE) between the tooth top protruding circular segment (BC) and the tooth root recessed circular segment (EG). The transition curve line segment (CE) is a combination line segment composed of a cosine curve line segment (CD) and a cosine curve conjugate curve line segment (DE) in tangency. The radius (AB) of the tooth top protruding circular segment is equal to the radius (FG) of the tooth root recessed circular segment. The tooth top protruding circular segment (BC) and the tooth root recessed circular segment (EG) are both in tangency with the transition curve line segment (CE). The meshing points move along the tooth profile (1-1 and 1-2) of the driving circular spiral gear and the driven circular spiral gear. The overlapping ratio of the driving circular spiral gear (1) and the driven circular spiral gear (2) is close to or equal to 1. The spiral gear with the circular tooth profile and for the hydraulic device prolongs constant volume output and improves pump efficiency.
Description
Technical field
The invention belongs to mechanical parts, particularly circular arc flank profil spiral gear for a kind of hydraulic pressure installation.
Background technique
At present, the gear-type major part of the gear pump that China's hydraulic system is used is involute gear, the gear pump of the type has that simple in structure, anti-systemic contamination ability is strong, high reliability, shortcoming is the entrap phenomenon that involute gear causes, cause the gear pump of the type to there is the shortcomings such as noise is large, flow output ripple is large, spiral circle gear pump with arc teeth profile in existing gear type transmitting hydraulic device has minimized oscillation of flows and lower noise, and shortcoming is that constant volume output is lower.
Summary of the invention
The object of the invention is to overcome above-mentioned technical deficiency, provide a kind of noise little, can increase between cog volume, improve the circular arc flank profil spiral gear for hydraulic pressure installation of constant volume output.
The technological scheme that technical solution problem of the present invention adopts is: hydraulic pressure installation comprises initiatively circular arc spiral gear with circular arc flank profil spiral gear, driven circular arc spiral gear, be characterized in main, driven circular arc helical tooth flank profil is by tooth top dome segmental arc, tooth root concave circular arc section, transition curve line segment between tooth top dome segmental arc and tooth root concave circular arc section forms, transition curve line segment is gripped the tangent combination line segment forming of curved segments altogether by cosine curve line segment and cosine curve, tooth top dome segmental arc is that to take the tooth top dome segmental arc center of circle be the center of circle, tooth top dome segmental arc radius is that radius forms, tooth root concave circular arc section is that to take the tooth root concave circular arc section center of circle be the center of circle, tooth root concave circular arc section radius is that radius forms, tooth top dome segmental arc radius equals tooth root concave circular arc section radius, the tooth top dome segmental arc center of circle, the tooth root concave circular arc section center of circle and master, the minimum range of driven circular arc spiral gear pitch circle line segment equates, tooth top dome segmental arc and tooth root concave circular arc Duan Junyu transition curve line segment are tangent, main, during driven circular arc spiral gear engagement, contact points is along master, driven circular arc spiral gear flank profil moves, main, the contact ratio of driven circular arc spiral gear approaches or equals 1.
The invention has the beneficial effects as follows: hydraulic pressure installation with circular arc flank profil spiral gear in the situation that not changing centre distance, the number of teeth, can increase between cog volume, improve constant volume output, improve the efficiency of pump, but also can overcome the large and large shortcoming of flow pulsation of existing gear type transmitting hydraulic device noise.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, with embodiment, illustrate.
Fig. 1 is the driving and driven circular arc spiral gear of circular arc flank profil spiral gear engagement figure for hydraulic pressure installation.
Fig. 2 is driving and driven circular arc spiral gear profile geometry figure in Fig. 1.
In figure, 1-is circular arc spiral gear initiatively; 1-1-is circular arc spiral gear flank profil initiatively; 1-2-is circular arc spiral gear pitch circle line segment initiatively; The driven circular arc spiral gear of 2-; The driven circular arc spiral gear of 2-1-flank profil; The driven circular arc spiral gear of 2-2-pitch circle line segment; The A-tooth top dome segmental arc center of circle; The F-tooth root concave circular arc section center of circle; AB-tooth top dome segmental arc radius; FG-tooth root concave circular arc section radius; BC-tooth top dome segmental arc; CD-cosine curve line segment; DE-cosine curve is gripped curved segments altogether; EG-tooth root concave circular arc section; CE-transition curve line segment.
Embodiment
Embodiment, with reference to accompanying drawing 1,2, hydraulic pressure installation is comprised of the transition curve line segment CE between tooth top dome segmental arc BC, tooth root concave circular arc section EG, tooth top dome segmental arc BC and tooth root concave circular arc section EG with driving and driven circular arc spiral gear flank profil 1-1, the 2-1 of circular arc flank profil spiral gear, and transition curve line segment CE grips the tangent combination line segment forming of curved segments DE altogether by cosine curve line segment CD and cosine curve.Tooth top dome segmental arc BC is that to take tooth top dome segmental arc center of circle A be the center of circle, tooth top dome segmental arc Radius A B is that radius forms, tooth root concave circular arc section EG is that to take tooth root concave circular arc section center of circle F be the center of circle, tooth root concave circular arc section radius FG is that radius forms, tooth top dome segmental arc Radius A B equals tooth root concave circular arc section radius FG, tooth top dome segmental arc center of circle A, tooth root concave circular arc section center of circle F and master, driven circular arc spiral gear pitch circle section 1-2, the minimum range of 2-2 equates, tooth top dome segmental arc center of circle A and tooth root concave circular arc section center of circle F lay respectively at master, driven circular arc spiral gear pitch circle line segment 1-2, the outside of 2-2 and inner side, tooth top dome segmental arc BC and tooth root concave circular arc section EG are all tangent with transition curve line segment CE.During driving and driven circular arc spiral gear 1,2 engagement, contact points moves along driving and driven circular arc spiral gear flank profil 1-1,2-1, and the contact ratio of driving and driven circular arc spiral gear 1,2 approaches or equals 1.
Claims (1)
1. a circular arc flank profil spiral gear for hydraulic pressure installation, comprises initiatively circular arc spiral gear (1), driven circular arc spiral gear (2), is characterized in that main, driven circular arc helical tooth flank profil (1-1, 2-1) by tooth top dome segmental arc (BC), tooth root concave circular arc section (EG), transition curve line segment (CE) between tooth top dome segmental arc (BC) and tooth root concave circular arc section (EG) forms, transition curve line segment (CE) is gripped the tangent combination line segment forming of curved segments (DE) altogether by cosine curve line segment (CD) and cosine curve, and tooth top dome segmental arc (BC) is that to take the tooth top dome segmental arc center of circle (A) be the center of circle, tooth top dome segmental arc radius (AB) is that what radius formed, tooth root concave circular arc section (EG) are that to take the tooth root concave circular arc section center of circle (F) be the center of circle, tooth root concave circular arc section radius (FG) is radius formation, and tooth top dome segmental arc radius (AB) equals tooth root concave circular arc section radius (FG), the tooth top dome segmental arc center of circle (A), the tooth root concave circular arc section center of circle (F) is with main, driven circular arc spiral gear pitch circle line segment (2-1, minimum range 2-2) is equal, and tooth top dome segmental arc (BC) and tooth root concave circular arc section (EG) are all tangent with transition curve line segment (CE), main, driven circular arc spiral gear (1, 2), while meshing, contact points is along master, driven circular arc spiral gear flank profil (1-1, 1-2) mobile, main, driven circular arc spiral gear (1, 2) contact ratio approaches or equals 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210167947.2A CN102678829B (en) | 2012-05-28 | 2012-05-28 | Spiral gear with circular tooth profile and for hydraulic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210167947.2A CN102678829B (en) | 2012-05-28 | 2012-05-28 | Spiral gear with circular tooth profile and for hydraulic device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102678829A CN102678829A (en) | 2012-09-19 |
| CN102678829B true CN102678829B (en) | 2014-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210167947.2A Active CN102678829B (en) | 2012-05-28 | 2012-05-28 | Spiral gear with circular tooth profile and for hydraulic device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321321B (en) * | 2022-01-05 | 2024-07-16 | 福建冠维汽车零部件有限公司 | Three-section circular arc gear and design method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2159744A (en) * | 1936-08-26 | 1939-05-23 | Brown & Sharpe Mfg | Gear pump |
| US2462924A (en) * | 1944-03-01 | 1949-03-01 | Equi Flow Inc | Gear tooth profile |
| GB827617A (en) * | 1956-02-21 | 1960-02-10 | Seiko Muto | Gear wheels |
| US3855874A (en) * | 1972-07-26 | 1974-12-24 | Hasegawa Haguruma Kk | Double mesh type w-n gear |
| CN201461897U (en) * | 2009-02-27 | 2010-05-12 | 完颜学明 | Arc spiral cylindrical gear and arc rack |
| CN101821510A (en) * | 2008-08-08 | 2010-09-01 | 住友电工烧结合金株式会社 | Internal gear pump rotor, and internal gear pump using the rotor |
| CN102227560A (en) * | 2008-12-02 | 2011-10-26 | 马尔佐基蓬佩股份公司 | Tooth profile for rotors of positive displacement external gear pumps |
| CN202597592U (en) * | 2012-05-28 | 2012-12-12 | 阜新德尔汽车部件股份有限公司 | Arc tooth profile spiral gear for hydraulic devices |
-
2012
- 2012-05-28 CN CN201210167947.2A patent/CN102678829B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2159744A (en) * | 1936-08-26 | 1939-05-23 | Brown & Sharpe Mfg | Gear pump |
| US2462924A (en) * | 1944-03-01 | 1949-03-01 | Equi Flow Inc | Gear tooth profile |
| GB827617A (en) * | 1956-02-21 | 1960-02-10 | Seiko Muto | Gear wheels |
| US3855874A (en) * | 1972-07-26 | 1974-12-24 | Hasegawa Haguruma Kk | Double mesh type w-n gear |
| CN101821510A (en) * | 2008-08-08 | 2010-09-01 | 住友电工烧结合金株式会社 | Internal gear pump rotor, and internal gear pump using the rotor |
| CN102227560A (en) * | 2008-12-02 | 2011-10-26 | 马尔佐基蓬佩股份公司 | Tooth profile for rotors of positive displacement external gear pumps |
| CN201461897U (en) * | 2009-02-27 | 2010-05-12 | 完颜学明 | Arc spiral cylindrical gear and arc rack |
| CN202597592U (en) * | 2012-05-28 | 2012-12-12 | 阜新德尔汽车部件股份有限公司 | Arc tooth profile spiral gear for hydraulic devices |
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| Publication number | Publication date |
|---|---|
| CN102678829A (en) | 2012-09-19 |
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