CN85103606A - Inscribe orthodrome unloading vane-type pump (motor) - Google Patents
Inscribe orthodrome unloading vane-type pump (motor) Download PDFInfo
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- CN85103606A CN85103606A CN85103606.6A CN85103606A CN85103606A CN 85103606 A CN85103606 A CN 85103606A CN 85103606 A CN85103606 A CN 85103606A CN 85103606 A CN85103606 A CN 85103606A
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- stator
- low pressure
- blade
- pump
- circular arc
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Abstract
This machinery is that the pump (motor) of positive displacement belongs to hydraulic transmission technology field, is that a kind of stator curve, blade structure are not limit side plate compensation or fixing vane pump (motor).Be characterized in: vane tip has maximum radius to equal the circular arc of stator length radius, all the time inscribe or coincidence when circular arc contacts with stator circular arc district, the flow groove that has high low pressure to distinguish on the side plate, low pressure flow groove communicates with low pressure port or attached pump outlet, the top contacted with the stator circular arc when root of blade was connected with high pressure, the high load region that blade contacts with stator moves on to stator circular arc district by low pressure transition curve district, with the vane pump ratio that does not have circular arc and off-load with equal pressure, contact stress differs more than 50 times.
Description
The present invention is the general basic element of mechanical engineering, is pump (motor) the genus hydraulic transmission technology field of positive displacement.
The countless searchers of domestic and international hydraulic transmission technology field of past reduce the contact stress of stator and blade in order to solve the principal contradiction of vane pump, reach not only high pressure but also wear-resisting target and have spent great effort and cost; In theory, stator curve has been done a series of further investigation, explored once, the various mathematic curves of secondary even high order, but produced little effect reducing contact stress; Vane tip is processed into circular arc, increases that radius of curvature can reduce contact stress but because of the centre of curvature and the change in radius of stator transition curve are infinite, and blade contacts with stator can only two curve intersections and can not be tangent, make the vane tip circular arc not bring into play a bit effect.People concentrated on main direction on the blade structure afterwards, though played the some effect, very limited.Because of being out of the question on some too little parts technology, the life-span of spring is limited, the intensity of double-leaf is also limited, pressure can not continue to improve, and the proportional pressure reducing valve arrangement, because the root of blade inhalation flow accounts for about 20% of total discharge, the hydraulic pressure loss of energy of high pressure relief reaches more than 10%, and causing does not have the future of use.
The inventor fundamentally solves blade and the big principal contradiction of stator contact stress in order to find more effective way, and the spy has taked to transform the method for contradiction, and the hazardous area is transferred to the position that helps taking measures and thoroughly solved it.
It is off-load in the logical low pressure of stator low pressure transition curve section root that the present invention has taked blade, blade enters stator circular arc and stator transition curve high pressure section, root communicates with high pressure, and the hazardous area moves on to stator arc section between high low pressure two districts by stator low pressure transition curve section.Just can inscribe when at this moment vane tip is circular arc or overlapped fully, radius of curvature can reach maximum value, and contact stress also just has been reduced to minimum value thus.The structure that designs with said method is referred to as inscribe orthodrome unloading vane-type pump (motor), and the vane tip radius of arc can arrive the length radius of arc of stator greatly.
Inscribe orthodrome unloading vane-type pump (motor) structure such as Fig. 1, Fig. 2: its structure is made of the pump housing 1 pump cover 2 side plates 3 floating side plates 4 rotors 5 stators 6 blades 7 transmission shafts 8 radial ball bearing 9,10 " O " RunddichtringOs 11,12,13 sealing ring washers 14 pins 15 ring washers 16,17 oil sealings 18 screws 19, be to reduce noise and remedy technologic error in high performance structures, on above-mentioned all parts bases, also add and specialize in the small discharge capacity attached pump that root of blade sucks, promptly increase attached side plate 20 attached stator 21 attached rotor 22 annexes 23.
Stator is similar with general blade pump stator, and any stator curve can; Rotor end-face can guarantee on the different side plate of sealing and the end face that rotor contacts high low pressure subregion flow groove is arranged during with plane contact between the adjacent blades groove (comprising root), the start stop bit of low pressure flow groove a and C is changed to blade rotor vane groove root position when stretching out the motion start-stop, vane tip contacted on the stator circular arc when high pressure flow groove b communicated with the rotor vane groove root with the assurance of d start-stop position, distance between the whole initial point of the terminal of high pressure flow groove b and d and low pressure flow groove a and C is more than or equal to the rotor vane groove root bore dia of cooling down, and the radial position of high low pressure flow groove is on the circumference of rotor vane groove root rotation.
Vane tip is one or both circular arcs.Rotor vane groove is when radially being provided with, and vane tip is a kind of circular arc; Characteristics are: sense of rotation is on one side in rotor for two circular arc inscribes or coincidence when vane tip contacts with stator length radius arc, vane tip chamfering.Rotor vane groove is that the inclination angle is when being provided with, vane tip is two kinds of suitable circular arcs of length, a kind of is vane tip two circular arc inscribe or coincidences when contacting with stator short radius circular arc, another kind then be vane tip when contacting with stator semi major axis circular arc, their inscribes or coincidence.
During the logical high pressure of root of blade, the top has entered stator circular arc district, though stressed big, the radius of curvature of Yin Neiqie arc is big, and contact stress is very little, and can guarantee reliably that high low pressure two districts strictness separates and seals, and has also just guaranteed volumetric efficiency.
When adding attached pump in the high-performance pump structure, then element precision and kinematic accuracy can suitably reduce, and can remedy the error in the manufacturing, because the logical main pump root of blade of attached pump outlet, can guarantee fully that then blade is close to stator, thoroughly solve the main pump blade phenomenon of coming to nothing.
When attached pump was vane pump, as Fig. 1, they formed low pressure pump by attached side plate 20 attached stator 21 attached rotor 22 small leaf annexes 23, specialized in the main pump root and sucked.At this moment side plate 3 has the full circle annular groove in attached pump one side in root of blade, and communicates low pressure flow groove a and C in the annular groove on porose logical side plate 3 other ends with the attached pump outlet.
When attached pump was cycloid rotor pump, attached stator 21 was the external rotor supporting, and attached rotor 22 is an internal rotor, and annex 23 is an external rotor.
No matter how high main pump pressure is, attached pump pressure is all at 5 kilograms/cm
2Below.
The present invention increases to stator length radius with the radius of curvature that vane tip works by general 0.1-0.2mm.Radius enlarges more than hundred times, and contact stress drops to below 1/50th of old structure, if root of blade all there is not the 64 kgfs/cm of off-load
2Old structure pumping pressure improves 8 times, and vane thickness increases by 3 times of contact stress still not until old 1/10th of structure, the enough vane pumps of the allowable contact stress of material (motor) at a high speed, the high voltage long life direction develops, so the present invention has unlimited wide prospect! Take and be with attached pump structure and twin-stage vane pump ratio more to show advantage of the present invention!
The processing of blade circular arc: blade packed into just can grind the circular arc of one or both regulation radius of curvature in the frock of similar rotor.Rotor rotation just can grind the circular arc of required radius when blade groove blade for radially the time was packed the rotor grinding into; When blade groove is the inclination angle, grind the circular arc that equals the stator short radius for the first time, blade is stretched out again, grind the circular arc that radius equals the stator major diameter for the second time, two kinds of arc length are suitable, other and the like.
The technology that the present invention reduces contact stress can be applicable to stator has the double-acting pump (motor) of the single-acting metering pump (motor) of the circular arc that two kinds of radiuses do not wait and other any blade structures as structures such as double-leaf, primary and secondary blade, step blades, pin blade, spring leafs.
Claims (8)
1, a kind of stator curve, blade structure are not limit side plate compensation or fixing vane pump (motor), are characterized in: vane tip has maximum radius to equal the circular arc of stator length radius, inscribe or coincidence all the time when the blade circular arc contacts at stator line of apsides arc section; The flow groove that has high low pressure to separate out on side plate and the rotor surface of contact, the root position of correspondence was a low pressure flow groove terminal when blade stretched out start-stop, low pressure flow groove communicates with low pressure port or attached pump outlet, distance between the whole initial point of low pressure flow groove terminal and high pressure flow groove is more than or equal to the rotor vane groove root bore dia of cooling down, and the high load region that blade contacts with stator moves on to stator circular arc district by stator low pressure transition curve district.
2, as requiring as described in 1, side plate low pressure flow groove communicates with the attached pump outlet of small discharge capacity.
3, as requiring as described in 1 direct communicate with low pressure port (the no attached pump) of side plate low pressure flow groove.
4, as requiring as described in 1, when blade was radially placed in rotor, the top was a kind of circular arc, and maximum radius equals the stator short radius, and top chamfer is contained in moving direction one side.
5, as requiring as described in 1, blade is inclination angle when placing, and the top is two kinds of circular arcs, during running respectively with stator line of apsides circular arc inscribe or overlap.
6, as requiring as described in 1, pump (motor) has the single-acting constant flow paddle pump (motor) of two sections circular arcs that radius do not wait for stator.
7, as requiring as described in 1, pump (motor) is double-acting vane pump (motor).
8, as requiring as described in 1, pump (motor) is the vane pump (motor) of other any structure blades (double-leaf, primary and secondary blade, pin blade, step blades, spring leaf etc.).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85103606 CN1010337B (en) | 1985-05-16 | 1985-05-16 | Large internally tangent arc unloading vane-type pump or motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85103606 CN1010337B (en) | 1985-05-16 | 1985-05-16 | Large internally tangent arc unloading vane-type pump or motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85103606A true CN85103606A (en) | 1986-12-10 |
| CN1010337B CN1010337B (en) | 1990-11-07 |
Family
ID=4793314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85103606 Expired CN1010337B (en) | 1985-05-16 | 1985-05-16 | Large internally tangent arc unloading vane-type pump or motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1010337B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101273200B (en) * | 2005-09-30 | 2010-06-16 | 罗伯特·博世有限公司 | Vane pump |
| CN103122818A (en) * | 2013-01-29 | 2013-05-29 | 武汉船用机械有限责任公司 | Stator and motor |
| CN104196721A (en) * | 2014-07-31 | 2014-12-10 | 安徽恒博电气科技有限公司 | Single-action vane pump |
| CN106917746A (en) * | 2015-12-25 | 2017-07-04 | 株式会社昭和 | Vane pump apparatus |
| CN107787409A (en) * | 2015-04-28 | 2018-03-09 | 吉凯恩粉末冶金工程有限公司 | Fluid pump |
| WO2022251989A1 (en) * | 2021-05-30 | 2022-12-08 | 台州弘一液压伺服科技有限公司 | Multi-acting vane-type hydraulic motor for use in heavy machinery |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101338747B (en) * | 2008-08-12 | 2010-06-02 | 胡东文 | Double oil path vane pump /motor |
-
1985
- 1985-05-16 CN CN 85103606 patent/CN1010337B/en not_active Expired
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101273200B (en) * | 2005-09-30 | 2010-06-16 | 罗伯特·博世有限公司 | Vane pump |
| CN103122818A (en) * | 2013-01-29 | 2013-05-29 | 武汉船用机械有限责任公司 | Stator and motor |
| CN104196721A (en) * | 2014-07-31 | 2014-12-10 | 安徽恒博电气科技有限公司 | Single-action vane pump |
| CN107787409A (en) * | 2015-04-28 | 2018-03-09 | 吉凯恩粉末冶金工程有限公司 | Fluid pump |
| CN107787409B (en) * | 2015-04-28 | 2020-07-03 | 吉凯恩粉末冶金工程有限公司 | Fluid pump |
| CN106917746A (en) * | 2015-12-25 | 2017-07-04 | 株式会社昭和 | Vane pump apparatus |
| US10451062B2 (en) | 2015-12-25 | 2019-10-22 | Showa Corporation | Vane pump device |
| CN106917746B (en) * | 2015-12-25 | 2020-08-07 | 株式会社昭和 | Vane pump device |
| WO2022251989A1 (en) * | 2021-05-30 | 2022-12-08 | 台州弘一液压伺服科技有限公司 | Multi-acting vane-type hydraulic motor for use in heavy machinery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1010337B (en) | 1990-11-07 |
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Legal Events
| Date | Code | Title | Description |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| C14 | Grant of patent or utility model | ||
| C19 | Lapse of patent right due to non-payment of the annual fee |