CN100554690C - The rotor of oil hydraulic pump - Google Patents
The rotor of oil hydraulic pump Download PDFInfo
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- CN100554690C CN100554690C CNB2007100699196A CN200710069919A CN100554690C CN 100554690 C CN100554690 C CN 100554690C CN B2007100699196 A CNB2007100699196 A CN B2007100699196A CN 200710069919 A CN200710069919 A CN 200710069919A CN 100554690 C CN100554690 C CN 100554690C
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- oil hydraulic
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Abstract
The invention provides a kind of rotor of oil hydraulic pump, belong to the oil hydraulic pump technical field.It has solved existing cylinder block of hydraulic pumps because flow and pressure pulsation make oil hydraulic pump produce the problem of noise.The rotor of this oil hydraulic pump comprises the blade of columned rotor body and some flat, and these blades are plugged on the rotor body along the radially activity of rotor body, and described blade mode with non-five equilibrium on rotor body distributes.The rotor of this oil hydraulic pump can reduce flow, the pressure pulsation of oil hydraulic pump effectively, so that reduce noise and simple in structure.
Description
Technical field
The invention belongs to the oil hydraulic pump technical field, relate to a kind of rotor of oil hydraulic pump.
Background technique
Along with popularizing of automobile, people have more and more higher requirement to the performance and the driving comfortability of automobile, are one of them to the reliability that turns to, portability and the sensitivity of automobile, therefore, have used hydraulic power-assisted steering system in the steering system of automobile.
In the existing technology, oil hydraulic pump comprises rotor, stator, blade and oil distribution casing, and wherein, blade is that the mode with five equilibrium is movably connected on rotor epitrochanterian, can freely radially slide, and rotor is arranged in the stator.In the rotation process of rotor, because the effect of inertial force, blade leans against on the inner curve surface of stator all the time, between adjacent blades and left and right sides oil distribution casing, form the work cavity volume, subtract transition curve and constitute because stator inner surface is added etc. by two semi major axis circular arcs and two short radius circular arcs and four etc.When blade rotated a circle, twice oil suction and twice oil extraction had certain flow pulsation and pressure pulsation owing to rotor is on-stream, made blade produce certain impact to stator inner surface, therefore produced certain hydraulic noise.During motor turning, since the existence of noise, the sensitivity that influences usability and turn to.Safety traffic and travelling comfort to automobile have very big influence.Therefore, people are moving heaven and earth, and reduce as possible and elimination flow and pressure pulsation.This will ask for help to improve from the oil hydraulic pump internal structure.
To double-acting vane pump, the double-acting stator slideway of rational Match, curve form and its number of blade, can accomplish to make its moment how much discharge capacities constant in theory, be that factor of non-uniform flow is zero, for example grade that adopt to revise of changeover portion adds to wait and subtracts curve and arrange in pairs or groups, 12 numbers of blade can satisfy this requirement, but owing to exist:
1, effective swept volume change with time of pump, the corner and the time of the relative pump shaft of flow of its moment all change, and have promptly determined its output flow to have pulsation.
2, the constrictive influence of working medium, for example the actual pressure in the gear pump swept volume constantly changes with the rotation and the runner impedance of associated components, also can cause the flow pulsation that adds.
3, the influence of the inhomogeneous leakage flutter component that superposeed again in the pump, thus in fact must have to a certain degree flow pulsation, general all at 3-5%.
Summary of the invention
The objective of the invention is the above-mentioned problem at the rotor existence of existing oil hydraulic pump, a kind of rotor of oil hydraulic pump is provided, it can reduce flow, the pressure pulsation of oil hydraulic pump effectively, so that reduce noise and simple in structure.
Purpose of the present invention can realize by following technical proposal: a kind of rotor of oil hydraulic pump, the blade that comprises columned rotor body and some flat, these blades are plugged on the rotor body along the radially activity of rotor body, it is characterized in that described blade mode with non-five equilibrium on rotor body distributes.
The influence of inhomogeneous leakage makes oil hydraulic pump exist flow pulsation very big in effective swept volume change with time of pump, the constrictive shadow of working medium and the pump, and being mode with non-five equilibrium, the blade of this rotor distributes, but property distribution according to certain rules, can solve the above-mentioned pumping flow pulsation that has various factors.Through a large amount of long-time repetition tests, draw the flow pulsation minimum value.
In the rotor of above-mentioned oil hydraulic pump, described rotor body is that the boundary is divided into left half-court and right half-court with the straight line that passes the center, and the blade center of the blade of left half-court and right half-court is symmetrical arranged.The left half-court the right half-court is also simultaneously in oil-feed and fuel-displaced in oil-feed with when fuel-displaced, oil hydraulic pump oil-feed and understand balance when fuel-displaced and produce off-centered angular force to rotor like this makes rotor rotation steady.
In the rotor of above-mentioned oil hydraulic pump, have on described left half-court and the right half-court and increase progressively interval and the interval of successively decreasing, angle in increasing progressively the interval between adjacent two blades is arranged in order by the mode that increases progressively from the beginning to the end, arranges in order by the mode of successively decreasing in the interval of successively decreasing.
Blade mode with non-five equilibrium on rotor body is arranged, and is regular but arrange.At the angle that increases minimum between interval interior two adjacent blades is head, and maximum angle is an afterbody.
In the rotor of above-mentioned oil hydraulic pump, the described interval of successively decreasing has only an angle.
As another kind of situation, in the rotor of above-mentioned oil hydraulic pump, only increase progressively the interval on described left half-court and the right half-court.
In the rotor of above-mentioned oil hydraulic pump, the described angle that increases progressively that increases progressively the angle in interval is identical, and the angle that increases progressively is between 1 °～5 °.
In the rotor of above-mentioned oil hydraulic pump, the number of described blade is 8～16.
Compared with prior art, the epitrochanterian blade of this oil hydraulic pump with non-five equilibrium clocklike mode distribute, in increasing progressively the interval, arrange in order by the mode that increases progressively from the beginning to the end, in the interval of successively decreasing, arrange in order by the mode of successively decreasing, can solve the above-mentioned pumping flow pulsation that has various factors, so that reduce noise.The rotor of this oil hydraulic pump has only only changed the distribution mode on rotor body of blade, just can realize reducing the purpose of noise, and is simple in structure.
Description of drawings
Fig. 1 is the structural representation of oil hydraulic pump among the present invention.
Fig. 2 is a cylinder block of hydraulic pumps main body structure schematic representation of the present invention.
Fig. 3 is the user mode structural drawing of cylinder block of hydraulic pumps of the present invention.
Among the figure, 1, rotor body; 11, groove; 12, increase progressively the interval; 13, the interval of successively decreasing; 14, straight line; 15, left half-court; 16, right half-court; 2, blade; 3, stator; 4, go up oil distribution casing; 5, following oil distribution casing; α, angle.
Embodiment
Below be specific embodiments of the invention and in conjunction with the accompanying drawings, technological scheme of the present invention is further described, but the present invention be not limited to these embodiments.
As shown in Figure 1, the rotor of this oil hydraulic pump is the rotor on the vane pump, and this rotor and stator 3 and last oil distribution casing 4, following oil distribution casing 5 are formed the overcurrent assemblies.
This rotor is made up of the blade 2 of columned rotor body 1 and flat.The footpath of above-mentioned rotor body 1 upwards has 11,12 blade 2 activities of 12 grooves and is plugged in the groove 11.In rotor body 1 rotation process, blade 2 is because action of inertia can be radially protruding, contact is on stator, stator 3, two blades 2, go up between oil distribution casing 4 and the following oil distribution casing 5 and formed the work cavity volume, this work cavity volume in rotation process since blade in stator curve withdrawal rotor body 1, the volume of work cavity volume can constantly dwindle the oil outwards output astatically that makes the work cavity volume.
As shown in Figures 2 and 3, described blade 2 on rotor body 1 with non-five equilibrium clocklike mode distribute, it is regular to be that rotor body 1 is that the boundary is divided into left half-court 15 and right half-court 16 with the straight line 14 that passes the center, blade 2 centers of the blade of left half-court 15 and right half-court 16 are symmetrical arranged, in the left half-court 15 and right half-court 16 have and increase progressively interval 12 and successively decrease interval 13, angle α arranges by the mode that increases progressively in order with 2 ° angle from the beginning to the end in increasing progressively interval 12, has only an angle α in the interval 13 of successively decreasing.Increasing progressively in interval 12, the minimum angle α between two adjacent blades 2 is a head, and maximum angle α is an afterbody.Angle minimum in this example is 25 °.Blade 2 centers be symmetrical arranged be for the oil hydraulic pump oil-feed and when fuel-displaced balance rotor body 1 is produced off-centered angular force, make rotor rotation steady.
The blade 2 of this rotor is that the mode with non-five equilibrium distributes, but certain rules is arranged, and can solve the above-mentioned pumping flow pulsation that has various factors.Through a large amount of long-time repetition tests, draw the flow pulsation minimum value.But do not form the theory of computation as yet, so just pump is reduced to 70db by original 80db, reduced noise.
Specific embodiment described herein only is that the present invention's spirit is illustrated.The technician of the technical field of the invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has used rotor body 1, groove 11, blade 2, stator 3, gone up terms such as oil distribution casing 4, following oil distribution casing 5, angle α morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present invention more easily; They are construed to any additional restriction all is contrary with spirit of the present invention.
Claims (8)
1, a kind of rotor of oil hydraulic pump, the blade (2) that comprises columned rotor body (1) and some flat, these blades (2) are plugged on the rotor body (1) along the radially activity of rotor body (1), it is characterized in that the mode that described blade (2) is gone up with non-five equilibrium at rotor body (1) distributes.
2, the rotor of oil hydraulic pump according to claim 1, it is characterized in that, described rotor body (1) is that the boundary is divided into left half-court (15) and right half-court (16) with the straight line (14) that passes the center, and blade (2) center of the blade (2) of left half-court (15) and right half-court (16) is symmetrical arranged.
3, the rotor of oil hydraulic pump according to claim 2, it is characterized in that, the interval of increasing progressively (12) and the interval of successively decreasing (13) are arranged on described left half-court (15) and right half-court (16), angle (α) in increasing progressively interval (12) between adjacent two blades (2) is arranged in order by the mode that increases progressively, and arranges in order by the mode of successively decreasing in the interval of successively decreasing (13).
4, the rotor of oil hydraulic pump according to claim 3 is characterized in that, the described interval of successively decreasing (13) has only an angle (α).
5, the rotor of oil hydraulic pump according to claim 2 is characterized in that, only increases progressively interval (12) on described left half-court (15) and right half-court (16).
According to the rotor of claim 3 or 4 or 5 described oil hydraulic pumps, it is characterized in that 6, the described angle that increases progressively that increases progressively the angle (α) in the interval (12) is identical, the angle that increases progressively is between 1 °～5 °.
According to the rotor of any described oil hydraulic pump of claim 1 to 5, it is characterized in that 7, the number of described blade (2) is 8～16.
8, the rotor of oil hydraulic pump according to claim 6 is characterized in that, the number of described blade (2) is 8～16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100699196A CN100554690C (en) | 2007-07-05 | 2007-07-05 | The rotor of oil hydraulic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100699196A CN100554690C (en) | 2007-07-05 | 2007-07-05 | The rotor of oil hydraulic pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101092958A CN101092958A (en) | 2007-12-26 |
| CN100554690C true CN100554690C (en) | 2009-10-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100699196A Active CN100554690C (en) | 2007-07-05 | 2007-07-05 | The rotor of oil hydraulic pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100554690C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295489B (en) * | 2013-07-15 | 2017-03-01 | 上海通用汽车有限公司 | A kind of variable displacement vane pump |
| CN107299897B (en) * | 2017-04-28 | 2019-10-01 | 全兴精工集团有限公司 | A kind of steering pump of low noise low pulse |
| CN110440127A (en) * | 2019-09-18 | 2019-11-12 | 湖南机油泵股份有限公司 | A kind of blade pump rotor and the vane pump that noise can be reduced |
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2007
- 2007-07-05 CN CNB2007100699196A patent/CN100554690C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN101092958A (en) | 2007-12-26 |
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