CN103147975A - Method for improving performance of high-speed and heavy-load plunger pump and novel tapered cylinder device - Google Patents
Method for improving performance of high-speed and heavy-load plunger pump and novel tapered cylinder device Download PDFInfo
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- CN103147975A CN103147975A CN2013100714929A CN201310071492A CN103147975A CN 103147975 A CN103147975 A CN 103147975A CN 2013100714929 A CN2013100714929 A CN 2013100714929A CN 201310071492 A CN201310071492 A CN 201310071492A CN 103147975 A CN103147975 A CN 103147975A
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Abstract
The invention discloses a method for improving the performance of a high-speed and heavy-load plunger pump and a novel tapered cylinder device. The method includes the following steps: forming the angle alpha between an axial line of a spindle of a cylinder body and an axial line of a plunger, and forming the angle beta between a center line of each oil suction/drainage hole in the cylinder body and an axial line of the spindle, so as to improve the working rotating speed and displacement of the plunger pump. The novel tapered cylinder device includes a cylinder body (1) and a spindle hole (6) horizontally arranged at the center of the cylinder body (1), wherein a plurality of inclined plunger holes (3) are uniformly distributed on the periphery of the spindle hole (6); an inclined oil suction/drainage hole is communicated with one end of each plunger hole (3), and a copper bush (2) is arranged at the other end of each plunger hole (3). According to the invention, under the premise that the volume and weight of the high-speed and heavy-load plunger pump are basically unchanged, the displacement, rotating speed and working reliability are greatly improved, besides, noise reduction is realized, the copper bushes are prevented from falling off, and the service life of the high-speed and heavy-load plunger pump is improved.
Description
Technical field
The present invention relates to the crucial friction pair of a kind of plunger pump field, particularly a kind of method and Novel tapered cylinder apparatus that improves high-speed overload plunger pump performance.
Background technique
Axial piston pump is because compact structure, the particular advantages such as specific power is large, the life-span is long are widely applied in the Fluid-transmission field.Along with the development of hydraulic transmission and control technique, axial piston pump is just towards the future development of high pressure, high speed and large discharge capacity.
Along with the variation of grobal environment, the mankind more and more pay attention to environmental protection problem, more require various products can both realize the function of energy-conserving and environment-protective.Oil hydraulic pump is as the power core parts of whole Hydraulic Power Transmission System, overcome oil hydraulic pump self leakage and the large shortcoming of noise as far as possible and be subject to more and more higher attention, hydraulic planger pump technology forward becomes the future development of " clean hydraulic pressure, quiet hydraulic pressure, the easy-to-use hydraulic pressure " of user's pursuit.
The cylinder body overwhelming majority of high-speed overload axial piston pump is for inlaying the combined type cylinder body of bronze bushing.Body material mostly is the alloyed steels such as GCr15,20Cr, 12CrNi3A.Inlay cylinder sleeve and be generally the soft materials such as ZQSn 10-1 bronze, antimony bronze, 10-2-3 tin leaded nickel bronzes, ZQA19-4 bronze.High-power axial piston pump is along with the raising of cylinder body volume increase with rotating speed, and the probability of the phenomenon of the failure that when the plunger backhaul appears in the cylinder body inner cylinder liner, copper sheathing and cylinder body come off is more and more higher.In case copper sheathing is hauled out, plunger pump can cause within the extremely short time to be scrapped, and host computer system paralyses thereupon.
Current oil hydraulic pump technology is just towards large power overloading future developments such as low weight, small volume, high pressure, high temperature.Traditional cylindricality cylinder body, when pump delivery was larger, the diameter of thrust plate will be done greatlyr, and this has not only increased the overall dimensions of pump, and has increased the weight of pump.Therefore, the oil hydraulic pump technology of development high pressure, high temperature, high power density has become the inevitable demand of development.
Summary of the invention
The object of the invention is to, a kind of method and Novel tapered cylinder apparatus that improves high-speed overload plunger pump performance is provided.The present invention can guarantee in the substantially constant situation of the volume and weight of high-speed overload axial piston pump, can also significantly improve its discharge capacity, rotating speed, functional reliability, reach simultaneously sound-deadening and noise-reducing, avoid the copper sheathing release failure, improve the working life of high-speed overload axial piston pump.
Technological scheme of the present invention: a kind of method that improves high-speed overload plunger pump performance, be angle α setting by main-shaft axis and plunger axis with cylinder body, and the suction oilhole center line on cylinder body and main-shaft axis are angle β setting, thereby improve working speed and the discharge capacity of plunger pump.
In the method for aforesaid raising high-speed overload plunger pump performance, described angle α scope control is at 3～8 °, and angle β scope control is at 2～5 °; And angle β is less than angle α.
In the method for aforesaid raising high-speed overload plunger pump performance, the outer wall of cylinder block taper is arranged, thereby reduce the oil distribution casing diameter, reduce the linear velocity of cylinder body flow face motion, ρ ν value is diminished, further improve the plunger pump performance.
In the method for aforesaid raising high-speed overload plunger pump performance, described outer wall of cylinder block includes the cylinder body back segment outer wall near the cylinder body leading portion outer wall of suction oilhole and close cylinder body copper sheathing, cylinder body back segment outer wall and cylinder body leading portion outer wall form angle γ, angle γ≤angle α.
Realize in the Novel tapered cylinder apparatus of method of aforesaid raising high-speed overload plunger pump performance, comprise cylinder body and the spindle hole that is horizontally set on the cylinder body center, the spindle hole periphery is laid with the plunger hole of some inclinations, plunger hole one end is communicated with the suction oilhole that is obliquely installed, and the other end is provided with copper sheathing.
In aforesaid Novel tapered cylinder apparatus, the center line of described plunger hole and spindle hole center line form angle α, and angle α scope control is at 3～8 °.
In aforesaid Novel tapered cylinder apparatus, the center line of described suction oilhole and spindle hole center line form angle β, and angle β scope control is at 2～5 °, and angle β is less than angle α.
In aforesaid Novel tapered cylinder apparatus, described cylinder body leading portion outer wall near the suction oilhole is tapered, and the cylinder body back segment outer wall of close copper sheathing is cylindrical, and forms angle γ with cylinder body leading portion outer wall; Described angle γ≤angle α.
In aforesaid Novel tapered cylinder apparatus, the end face in suction oilhole one side on described cylinder body is sphere distributing construction end face.
In aforesaid Novel tapered cylinder apparatus, described some plunger holes are 5,7,9 or 11 odd-numbered columns consents.
Compared with prior art, the present invention becomes to have certain angle α by the cylinder body plunger hole axis with the high-speed overload axial piston pump with the spindle hole axis designs, make plunger hole be distributed in line centered by the spindle hole axis in cylinder body, the plunger hole axis is bus, both between angle be on the conical surface of α.Offer the conical distribution of 5-11 odd-numbered columns consents in corresponding cylinder body, more meet the ideal flow characteristic of hydraulic oil for making housing structure, suction, the oil drainage hole center line of cylinder body become to have certain angle β with the spindle hole axis designs.Thereby alleviate cylinder body weight on can be to greatest extent, reduce rotary inertia, can also guarantee the enough rigidity of cylinder body.
Therefore, the present invention is simple in structure, economic and practical, does not need existing product is carried out large change, just can significantly improve its service behaviour, and is simple in structure, economical convenient.This is different from the particular design form of traditional right cylinder plug cylinder block batter post plug taper cylinder body, and the batter post plug pump characteristics that makes is compared with right cylinder plug pump characteristics significant variation has been occured.Specific as follows: 1, due to plunger tapered distribution in cylinder body, this makes, and its plunger stroke increases under the same space structure
Thereby, cause the discharge capacity that often turns of pump to increase; 2, cylinder body cone structure, ball type of contact surface between cylinder body and oil distribution casing is reduced, the distribution circle radius of a minute food tray suction, oil-discharging cavity slotted eye is reduced, thereby be conducive to reduce the oil distribution casing diameter, reduce the linear velocity of cylinder body flow face motion, ρ ν value is diminished, can also be under identical working pressure, make pump self have higher permission rotating speed, it is large that flow further becomes; Centrifugal force when 3, plunger rotates has one along the component of plunger backhaul direction, thereby helps the backhaul of plunger, the suction capacity when improving plunger pump work.
Significant variation has occured in batter post plug of the present invention on motion analysis and force analysis, and then causes the variation of plunger motion, dynamics and pump duty characteristic.On the basis of fluid characteristics simulation analysis, the present invention has carried out the analysis of contrast optimization to the parameters of taper cylinder body, draws the best fit value between its parameters when the analysis of taper housing structure, force analysis and work.A, according to the difference of axial plunger pump displacement, the optimum value of angle α between cylinder body plunger hole axis and main-shaft axis is between 3～8 °, and angle α makes the centrifugal force that plunger rotate to produce reasonably be decomposed (acting on the component of plunger hole wall and component along plunger backhaul direction).＜1〉power that acts on the plunger hole wall reduces, frictional force between its plunger and cylinder body is diminished, this has solved the raising of high-speed overload axial piston pump along with working pressure and rotating speed to a certain extent, when effectively avoiding backhaul, cylinder body and copper sheathing break away from the generation of fault, significantly improve the reliability of high-speed overload plunger pump.＜2〉because frictional force diminishes, the wearing and tearing between plunger and cylinder body alleviate, thereby play the effect that improves friction pair working life, reduces noise.＜3〉along the component of plunger backhaul direction, make plunger produce certain impacting force to crawler shoe, set up the condition to this impacting force and crawler shoe bottom oil film is optimized analysis, crawler shoe can be set up the static balance near perfect condition under angle α, reduce the wear extent between crawler shoe and swash plate, increase its functional reliability, b, complete suction for reducing cylinder body, in the oil extraction process, the influence of noise that causes because of impact during hydraulic oil process bend, according to structural analysis and fluid characteristics simulation analysis, the suction of cylinder body, form angle β between oil drainage hole center line and cylinder body main-shaft axis, make fluid flowing and inhaling in plunger hole, flowing in oil drainage hole is more identical, reduced impact phenomenon, fluid boundary layer loss and eddy current loss and eddy current crack have been reduced, thereby reach the purpose of design of sound-deadening and noise-reducing, the optimum value of angle β is between 2～5 °, this makes housing structure more meet the ideal flow characteristic of hydraulic oil, c, through optimize analyzing, the value size of the cone angle gamma of cylinder body profile and angle α is close, cylinder body back segment outer wall is that the length of cylindrical part changes according to the difference of plunger stroke.This just alleviates cylinder body weight on to greatest extent, reduces its rotary inertia, reaches the purpose of further reduction axial piston pump operating noise.Weight, the economical with materials of pump have been alleviated simultaneously; D, by after the taper cylinder body is optimized analysis, the volume of using high-speed overload axial piston pump of the present invention has descended approximately 15% with originally comparing, rotating speed improves 10%, reducing noise 15% left and right; The mechanism of pump is more compact, has improved its reliability under same material.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the side view of Fig. 1.
Being labeled as in accompanying drawing: 1-cylinder body, 2-copper sheathing, 3-plunger hole, 4-cylinder body end face, 5-suction oilhole, 6-spindle hole.
Embodiment
The present invention is further illustrated below in conjunction with drawings and Examples, but not as the foundation to the present invention's restriction.
Embodiment.A kind of method that improves high-speed overload plunger pump performance, it is characterized in that: be angle α setting by main-shaft axis and plunger axis with cylinder body, and the suction oilhole center line on cylinder body and main-shaft axis are angle β setting, thereby improve working speed and the discharge capacity of plunger pump; Described angle α scope control is at 3～8 °, and angle β scope control is at 2～5 °; And angle β is less than angle α; The outer wall of cylinder block taper is arranged, thereby reduce the oil distribution casing diameter, reduce the linear velocity of cylinder body flow face motion, ρ ν value is diminished, further improve the plunger pump performance; Described outer wall of cylinder block includes the cylinder body back segment outer wall near the cylinder body leading portion outer wall of suction oilhole and close cylinder body copper sheathing, and cylinder body back segment outer wall and cylinder body leading portion outer wall form angle γ, angle γ≤angle α.
Realize the Novel tapered cylinder apparatus of the method for raising high-speed overload plunger pump performance, consist of as illustrated in fig. 1 and 2, comprise cylinder body 1 and the spindle hole 6 that is horizontally set on cylinder body 1 center, spindle hole 6 peripheries are laid with the plunger hole 3 of some inclinations, plunger hole 3 one ends are communicated with the suction oilhole 5 that is obliquely installed, and the other end is provided with copper sheathing 2.
Described plunger hole 3 center lines and spindle hole 6 center lines form angle α, and angle α scope control is preferably 5～6 ° at 3～8 °.
Described suction oilhole 5 center lines and spindle hole 6 center lines form angle β, and angle β scope control is at 2～5 °, and angle β is less than angle α.
Described cylinder body leading portion outer wall near suction oilhole 5 is tapered, and the cylinder body back segment outer wall of close copper sheathing 2 is cylindrical, and forms angle γ with cylinder body leading portion outer wall; Described angle γ≤angle α.
Described angle γ≤angle α, the taper that the cylinder body configuration design becomes to have cone angle gamma, the value size of cone angle gamma and angle α is approaching as far as possible; Only cylindrical with being designed in a bit of length of cylinder body profile plunger end in other words, this has just alleviated cylinder body weight on to greatest extent, has reduced its rotary inertia.
Described cylinder body end face 4 in suction oilhole 5 one sides is sphere distributing construction end face.
Described some plunger holes 3 are 5,7,9 or 11 odd-numbered columns consents.
Claims (10)
1. method that improves high-speed overload plunger pump performance, it is characterized in that: be angle α setting by main-shaft axis and plunger axis with cylinder body, and the suction oilhole center line on cylinder body and main-shaft axis are angle β setting, thereby improve working speed and the discharge capacity of plunger pump.
2. the method for raising high-speed overload plunger pump performance according to claim 1, it is characterized in that: described angle α scope control is at 3～8 °, and angle β scope control is at 2～5 °; And angle β is less than angle α.
3. the method for raising high-speed overload plunger pump performance according to claim 2, it is characterized in that: the outer wall of cylinder block taper is arranged, thereby reduce the oil distribution casing diameter, reduce the linear velocity of cylinder body flow face motion, ρ ν value is diminished, further improve the plunger pump performance.
4. the method for raising high-speed overload plunger pump performance according to claim 3, it is characterized in that: described outer wall of cylinder block includes the cylinder body back segment outer wall near the cylinder body leading portion outer wall of suction oilhole and close cylinder body copper sheathing, cylinder body back segment outer wall and cylinder body leading portion outer wall form angle γ, angle γ≤angle α.
5. realize the Novel tapered cylinder apparatus of the method for the described raising high-speed overload of the arbitrary claim of claim 1-4 plunger pump performance, it is characterized in that: comprise cylinder body (1) and be horizontally set on the spindle hole (6) at cylinder body (1) center, spindle hole (6) periphery is laid with the plunger hole (3) of some inclinations, plunger hole (3) one ends are communicated with the suction oilhole (5) that is obliquely installed, and the other end is provided with copper sheathing (2).
6. Novel tapered cylinder apparatus according to claim 5 is characterized in that: described plunger hole (3) center line and spindle hole (6) center line form angle α, and angle α scope control is at 3～8 °.
7. Novel tapered cylinder apparatus according to claim 6 is characterized in that: described suction oilhole (5) center line and spindle hole (6) center line form angle β, and angle β scope control is at 2～5 °, and angle β is less than angle α.
8. Novel tapered cylinder apparatus according to claim 7 is characterized in that: described cylinder body leading portion outer wall near suction oilhole (5) is tapered, is cylindrical near the cylinder body back segment outer wall of copper sheathing (2), and forms angle γ with cylinder body leading portion outer wall; Described angle γ≤angle α.
9. Novel tapered cylinder apparatus according to claim 8, it is characterized in that: described cylinder body end face (4) in suction oilhole (5) one sides is sphere distributing construction end face.
10. Novel tapered cylinder apparatus according to claim 9, it is characterized in that: described some plunger holes (3) are 5,7,9 or 11 odd-numbered columns consents.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310071492.9A CN103147975B (en) | 2013-03-06 | 2013-03-06 | A kind of method and Novel tapered cylinder apparatus improving high-speed overload plunger pump performance |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310071492.9A CN103147975B (en) | 2013-03-06 | 2013-03-06 | A kind of method and Novel tapered cylinder apparatus improving high-speed overload plunger pump performance |
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| CN103147975A true CN103147975A (en) | 2013-06-12 |
| CN103147975B CN103147975B (en) | 2015-10-28 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295484A (en) * | 2014-08-12 | 2015-01-21 | 龙工（上海）精工液压有限公司 | Cylinder block structure for improving self-sucking capacity |
| CN106555749A (en) * | 2015-09-30 | 2017-04-05 | 无锡市德美嘉机械科技有限公司 | A kind of hydraulic planger pump Novel cylinder body |
| CN112475816A (en) * | 2020-11-27 | 2021-03-12 | 江苏欧盛液压科技有限公司 | Novel processing method for waist-shaped cylinder body of axial plunger pump |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106351888B (en) * | 2016-11-24 | 2018-02-27 | 力源液压（苏州）有限公司 | A kind of inclined disc type hydraulic secondary component |
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|---|---|---|---|---|
| WO1988003227A1 (en) * | 1986-10-31 | 1988-05-05 | Westergaard, Knud, Erik | A multi-cylinder displacement pump with wobble-plate drive |
| CN101415944A (en) * | 2006-03-14 | 2009-04-22 | 朱荣辉 | Axial plunger pump or motor |
| CN101956700A (en) * | 2010-10-15 | 2011-01-26 | 天津市泽华源泵业科技发展有限公司 | Port plate radial variable plunger pump rotor |
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2013
- 2013-03-06 CN CN201310071492.9A patent/CN103147975B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1988003227A1 (en) * | 1986-10-31 | 1988-05-05 | Westergaard, Knud, Erik | A multi-cylinder displacement pump with wobble-plate drive |
| CN101415944A (en) * | 2006-03-14 | 2009-04-22 | 朱荣辉 | Axial plunger pump or motor |
| CN101956700A (en) * | 2010-10-15 | 2011-01-26 | 天津市泽华源泵业科技发展有限公司 | Port plate radial variable plunger pump rotor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295484A (en) * | 2014-08-12 | 2015-01-21 | 龙工（上海）精工液压有限公司 | Cylinder block structure for improving self-sucking capacity |
| CN106555749A (en) * | 2015-09-30 | 2017-04-05 | 无锡市德美嘉机械科技有限公司 | A kind of hydraulic planger pump Novel cylinder body |
| CN112475816A (en) * | 2020-11-27 | 2021-03-12 | 江苏欧盛液压科技有限公司 | Novel processing method for waist-shaped cylinder body of axial plunger pump |
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| CN103147975B (en) | 2015-10-28 |
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Application publication date: 20130612 Assignee: Suzhou Liyuan Hydraulic Co.,Ltd. Assignor: AVIC LIYUAN HYDRAULIC Co.,Ltd. Contract record no.: X2023520000004 Denomination of invention: A Method for Improving the Performance of High Speed and Heavy Duty Plunger Pumps and a New Type of Conical Cylinder Device Granted publication date: 20151028 License type: Exclusive License Record date: 20230606 |