CN103867434B - Helical teeth planetary gear pump - Google Patents
Helical teeth planetary gear pump Download PDFInfo
- Publication number
- CN103867434B CN103867434B CN201410149987.3A CN201410149987A CN103867434B CN 103867434 B CN103867434 B CN 103867434B CN 201410149987 A CN201410149987 A CN 201410149987A CN 103867434 B CN103867434 B CN 103867434B
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- Prior art keywords
- gear
- pump
- central gear
- oil
- sliding bearing
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Abstract
The present invention relates to a kind of helical teeth planetary gear pump, described gear pump comprises a central gear, several planet wheel, inner pump, the outer pump housing, input shaft, setting sleeve, sliding bearing, O type circle etc.; Described central gear, planet wheel are dead axle and arrange, central gear is driven by input shaft and is supported on inner pump by setting sleeve, planet wheel is supported on inner pump by sliding bearing, and central gear and planet wheel, inner pump inwall, sliding bearing side, both sides form several separate input output oil pocket; Oil sucting cavities all on inner pump communicates with the inlet port on the outer pump housing, and all oil-discharging cavities communicate with the oil drain out on the outer pump housing.The invention has the advantages that gear pump radial force cancels each other substantially, fit up gap can be kept preferably, greatly improve the stress of gear and bearing, reduce wearing and tearing, improve the life-span.Simultaneously owing to adding the quantity into discharge opeing oil pocket, several times improve gear pump delivery.
Description
Technical field
The present invention relates to the gear pump in a kind of hydraulic system, relate to specifically, for as the repairing in various engineering goods hydraulic system, lubrication, control oil sources etc., be particularly useful for the helical teeth planetary gear pump in the oil-way system needing huge discharge fluid to carry.
Background technique
In various types of volumetric oil pump, gear pump has that structure is simple, easy to manufacture, cost is low, lightweight, reliable operation and to advantages such as oil contamination are not too responsive, and application widely.But general spurgear pump is owing to existing radial imbalance problem, cause bearing and gear wear seriously, fit up gap is strengthened gradually, reveals serious, the shortcomings such as volumetric efficiency is low, and the life-span is low, noise is large.And existing straight-tooth planetary gear pump, entrap phenomenon can not be well solved, and noise is also larger.Along with the fast development of China's economy, the progressively lifting of technology, also more and more higher to the performance requirement of product, energy-efficient low noise becomes the developing direction of product, and therefore high-end engineering goods are in the urgent need to a kind of huge discharge, low noise, high performance gear pump.
Summary of the invention
Helical teeth planetary gear pump in a kind of oil-way system especially needing huge discharge fluid to carry for various engineering goods that object of the present invention provides for deficiency existing in above-mentioned prior art just.
Object of the present invention realizes by following technique measures:
Helical teeth planetary gear pump of the present invention comprises the inside and outside pump housing be set in together by close fit mode, be helical gear and the central gear arranged in dead axle mode and at least two planet wheels arranged around central gear, described central gear is driven by input shaft, and this input shaft is supported on inner pump by the central gear setting sleeve I and central gear setting sleeve II being positioned at two ends; Described planet wheel two ends are arranged in inner pump respectively by sliding bearing and sliding bearing overcoat I, sliding bearing overcoat II; Form several separate oil sucting cavity and oil-discharging cavity respectively between described central gear and planet wheel, inner pump inwall, and each oil sucting cavity communicates with the inlet port on the outer pump housing, each oil-discharging cavity communicates with the oil drain out on the outer pump housing.
Sliding bearing described in the present invention has the oilhole of bearing lubrication, this oilhole communicates with the oil-discharging cavity (hyperbaric chamber) of gear pump; The O type circle of sealing is added between the described inside and outside pump housing.
Central gear of the present invention and planet wheel are the low pitch angle helical gear of swing angle 4 ~ 5o, and have done mending teeth of gear design, and central gear employing bottom clearance is the little bottom clearance design of 0.13mm ~ 0.15mm.
In gear pump of the present invention, if the central gear number of teeth is the integral multiple of planet wheel number, then radial force can be offset completely, and if not integral multiple, radial force also can be fallen by basic neutralisation, improves the stress of gear and bearing, reduces wearing and tearing, improve the life-span; Reasonably design the total contact ratio of helical gear, central gear adopts little bottom clearance to design, and effectively improves entrap phenomenon, reduces flow pulsation, reduce noise; Gear adopts low pitch angle design, therefore the axial force engaging generation is smaller, central gear two end positioning and planet wheel two ends sliding bearing overcoat all adopt special high-abrasive material, central gear and planet wheel adopt carburizing and quenching technique, hardness is higher, therefore axially wearing and tearing are very little, but transmission stability is better than straight-tooth, and bearing capacity have also been obtained raising; Sliding bearing has the oilhole for bearing lubrication communicated with hyperbaric chamber, further increase bearing life.On inner pump, every a pair gears meshing both sides have a filler opening, an oil drain out, and all filler openings are merged into a filler opening by the outer pump housing, and all oil drain outs merge into an oil drain out.Inner pump, the outer pump housing all utilize three-dimensional solid modeling, and by CAE optimal design, rational in infrastructure.
Beneficial effect of the present invention is as follows:
The invention has the advantages that gear pump radial force cancels each other substantially, improve the stress of gear and bearing, reduce wearing and tearing, improve the life-span.Reasonably design the total contact ratio of helical gear, central gear adopts mending teeth of gear to add the design of little bottom clearance, effectively improves entrap phenomenon, reduces flow pulsation, reduce noise.Gear adopts low pitch angle design, therefore the axial force engaging generation is smaller, central gear two end positioning and planet wheel two ends sliding bearing overcoat all adopt special high-abrasive material, central gear and planet wheel adopt carburizing and quenching technique, hardness is higher, therefore axially wearing and tearing are very little, but transmission stability is better than straight-tooth, and bearing capacity have also been obtained raising.Simultaneously owing to adding the quantity into discharge opeing oil pocket, several times improve gear pump delivery.Be a kind of huge discharge, low noise, high performance gear pump, and vertical can be done according to use occasion.
Accompanying drawing explanation
Fig. 1 is the plan view of helical teeth planetary gear pump of the present invention.
Fig. 2 is A-A sectional view in Fig. 1.
Fig. 3 is sliding bearing view in Fig. 1.
Fig. 4 is the side view of Fig. 3.
Sequence number in Fig. 1 ~ Fig. 4: 1 inlet port, the 2 outer pump housings, 3O type circle, 4 inner pumps, 5 sliding bearing overcoat I, 6 sliding bearings, 7 planet wheels, 8 input shafts, 9 central gear setting sleeves I, 10 central gears, 11 oil drain outs, 12 central gear setting sleeves II, 13 sliding bearing overcoats II, 14 oil-discharging cavities, 15 oil sucting cavities, 16 oilholes.
Embodiment
The present invention is described in further details below in conjunction with embodiment's (accompanying drawing):
As shown in Figure 1, 2, the present invention's symmetrical helical teeth planetary gear pump pump comprises the inside and outside pump housing 4,2 be set in together by close fit mode, be helical gear and the central gear 10 arranged in dead axle mode and at least two planet wheels 7 arranged around central gear, described central gear 10 is driven by input shaft 8, and this input shaft 8 is supported on inner pump 4 by the central gear setting sleeve I 9 and central gear setting sleeve II 12 being positioned at two ends; Described planet wheel 7 two ends are arranged in inner pump 4 respectively by sliding bearing 6 and sliding bearing overcoat I 5, sliding bearing overcoat II 13; Form several separate oil sucting cavity 15 and oil-discharging cavity 14 respectively between described central gear 10 and planet wheel 7, inner pump 4 inwall, and each oil sucting cavity 15 communicates with the inlet port 1 on the outer pump housing, each oil-discharging cavity 14 communicates with the oil drain out 11 on the outer pump housing.
Sliding bearing 6 described in the present invention has the oilhole 16 of bearing lubrication, the oil-discharging cavity 14(hyperbaric chamber of this oilhole and gear pump) communicate; The O type circle 3 of sealing is added between the described inside and outside pump housing.
Central gear of the present invention and planet wheel are the low pitch angle helical gear of swing angle 4 ~ 5o, and have done mending teeth of gear design, and central gear adopts bottom clearance to be about the little bottom clearance design of 0.14mm.
Working principle of the present invention is as follows:
Input shaft 8 drives central gear 10 to rotate, central gear 10 engages with several planet wheel 7 simultaneously, the gear teeth are thrown off survey seal operation volume and are increased, form parital vacuum, in fuel tank, fluid is under the atmospheric effect in the external world, inlet port 1 through the outer pump housing enters in each oil sucting cavity 15 of inner pump, simultaneously, the opposite side gear teeth enter engagement, seal operation volume reduces gradually, fluid between cog is extruded, the oil drain out 11 convergeing to the outer pump housing from the oil-discharging cavity 14 of inner pump is transported to oil-way system, input shaft 8 drives central gear 10 continuous rotation, helical teeth planetary gear pump just completes the process of continuous oil suction and force feed.
Claims (2)
1. a helical teeth planetary gear pump, it is characterized in that: comprise the inside and outside pump housing (4,2) be set in together by the mode of being sealed and matched, a central gear (10) and at least two planet wheels (7) around central gear setting are all arranged in dead axle mode and are helical gear, described central gear (10) is driven by input shaft (8), and this input shaft is supported on inner pump (4) by the central gear setting sleeve I (9) and central gear setting sleeve II (12) being positioned at two ends; Described planet wheel (7) two ends are arranged in inner pump (4) respectively by sliding bearing (6) and sliding bearing overcoat I (5), sliding bearing overcoat II (13); Several separate oil sucting cavity (15) and oil-discharging cavity (14) is formed respectively between described central gear (10) and planet wheel (7), inner pump (4) inwall, and each oil sucting cavity (15) communicates with the inlet port (1) on the outer pump housing, each oil-discharging cavity (14) communicates with the oil drain out (11) on the outer pump housing; Described sliding bearing (6) has the oilhole (16) of bearing lubrication, this oilhole communicates with the oil-discharging cavity (14) of gear pump; The O type circle (3) of sealing is added between the described inside and outside pump housing.
2. helical teeth planetary gear pump according to claim 1, it is characterized in that: central gear and planet wheel are the low pitch angle helical gear of swing angle 4 ~ 5o, and having done mending teeth of gear design, central gear employing bottom clearance is the little bottom clearance design of 0.13mm ~ 0.15mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410149987.3A CN103867434B (en) | 2014-04-15 | 2014-04-15 | Helical teeth planetary gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410149987.3A CN103867434B (en) | 2014-04-15 | 2014-04-15 | Helical teeth planetary gear pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103867434A CN103867434A (en) | 2014-06-18 |
| CN103867434B true CN103867434B (en) | 2016-04-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410149987.3A Expired - Fee Related CN103867434B (en) | 2014-04-15 | 2014-04-15 | Helical teeth planetary gear pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN103867434B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3307489A (en) * | 1964-04-08 | 1967-03-07 | Eckerle | Gear machine |
| CN1029379C (en) * | 1990-02-21 | 1995-07-26 | 郑悦 | Balanced planetary gear pump |
| CN2292177Y (en) * | 1996-09-20 | 1998-09-23 | 赵连春 | Balance type combined gear pump, motor |
| WO2000061947A1 (en) * | 1999-04-13 | 2000-10-19 | Grube Glenn M | Dual path hydraulic pump |
| JP2002122081A (en) * | 2000-10-13 | 2002-04-26 | Honda Motor Co Ltd | Gear pump |
| CN2746155Y (en) * | 2003-10-27 | 2005-12-14 | 栾振辉 | Multi-gear hydraulic pump |
| CN201228635Y (en) * | 2008-06-11 | 2009-04-29 | 安徽理工大学 | Low-pressure high flow rate composite gear pump |
| CN102135094A (en) * | 2011-05-12 | 2011-07-27 | 阜新德尔汽车转向泵有限公司 | Helical gear steering pump |
| CN203756518U (en) * | 2014-04-15 | 2014-08-06 | 郑州机械研究所 | Helical planetary gear pump |
-
2014
- 2014-04-15 CN CN201410149987.3A patent/CN103867434B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3307489A (en) * | 1964-04-08 | 1967-03-07 | Eckerle | Gear machine |
| CN1029379C (en) * | 1990-02-21 | 1995-07-26 | 郑悦 | Balanced planetary gear pump |
| CN2292177Y (en) * | 1996-09-20 | 1998-09-23 | 赵连春 | Balance type combined gear pump, motor |
| WO2000061947A1 (en) * | 1999-04-13 | 2000-10-19 | Grube Glenn M | Dual path hydraulic pump |
| JP2002122081A (en) * | 2000-10-13 | 2002-04-26 | Honda Motor Co Ltd | Gear pump |
| CN2746155Y (en) * | 2003-10-27 | 2005-12-14 | 栾振辉 | Multi-gear hydraulic pump |
| CN201228635Y (en) * | 2008-06-11 | 2009-04-29 | 安徽理工大学 | Low-pressure high flow rate composite gear pump |
| CN102135094A (en) * | 2011-05-12 | 2011-07-27 | 阜新德尔汽车转向泵有限公司 | Helical gear steering pump |
| CN203756518U (en) * | 2014-04-15 | 2014-08-06 | 郑州机械研究所 | Helical planetary gear pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103867434A (en) | 2014-06-18 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Fengyang high tech Industrial Development Zone, Henan province Zhengzhou city 450001 Street No. 10 Patentee after: ZHENGZHOU RESEARCH INSTITUTE OF MECHANICAL ENGINEERING Co.,Ltd. Address before: Fengyang high tech Industrial Development Zone, Henan province Zhengzhou city 450001 Street No. 10 Patentee before: Zhengzhou Research Institute of Mechanical Engineering |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160406 |