CN201228632Y - Inside engaged cycloidal rotor pump - Google Patents
Inside engaged cycloidal rotor pump Download PDFInfo
- Publication number
- CN201228632Y CN201228632Y CNU2008200601465U CN200820060146U CN201228632Y CN 201228632 Y CN201228632 Y CN 201228632Y CN U2008200601465 U CNU2008200601465 U CN U2008200601465U CN 200820060146 U CN200820060146 U CN 200820060146U CN 201228632 Y CN201228632 Y CN 201228632Y
- Authority
- CN
- China
- Prior art keywords
- pump
- rotor
- pump housing
- pump body
- pin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Rotary Pumps (AREA)
Abstract
The utility model relates to an internal meshing cycloidal rotary pump, which belongs to the hydraulic transmission field. The internal meshing cycloidal rotary pump comprises a pump body (1), a front end cover (2) and a rear end cover (3) of the pump body (1), a rotation shaft penetrating the front end cover (2), the pump body (1) and the rear end cover (3) and arranged on the central line of the pump body, a pump body central hole (5) in the middle of the pump body (1), and an inner rotor (6) arranged in the hole and having the pump body central line as the axis, wherein the inner rotor (6) is a contracted epicycloid gear fixedly connected with the rotation shaft (4). The internal meshing cycloidal rotary pump is characterized in that the inner rotor (6) and the pump body central hole (5) are eccentrically arranged; an outer rotor (7) is arranged in the hole in such a manner that the outer rotor is tangent to the wall of the pump body central hole; and the outer rotor (7) is a pin gear and each pin gear is engaged with each epicycloid gear. The utility model has the advantages of simplified prior structure, reduced size of the hydraulic pump, simplified mounting and processing processes, small flow fluctuation, and long service life.
Description
Technical field
The utility model relates to a kind of hydraulic-pressure pump, relates in particular to a kind of cycloid rotor pump.
Background technique
At present, Chang Yong hydraulic-pressure pump has gear pump, vane pump, plunger pump, cycloid rotor type pump.Every kind of pump has pluses and minuses.
There is " pocketed oil " in gear pump, hydraulic radial force unbalance, problem such as flow pulsation is big." pocketed oil " makes gear and bearing produce very big additional load, and bearing life is short, and oil pump efficient is low.In addition, " pocketed oil " also can make oily temperature rise, is easy to generate bubble, and bubble breaks and causes big noise.The hydraulic radial force unbalance makes gear shaft be subjected to flecition, and oil sucting cavity gear radial clearance diminishes, and gear and pump housing inner chamber produce friction or stuck, make the oil pump cisco unity malfunction.Because after hydraulic oil sucks oil pocket, nearly 180 ° along with the rotation of gear, push away again after being transported to pumping cavity, and the gear denticle occupies certain space again, so flowed fluctuation is big, pressure surge is big, causes that impact, vibration and noise are big.
Vane pump complex structure, manufacturing difficulty to the rotating speed sensitivity of axle, with too slow equal cisco unity malfunction, require height to oil too soon, and easy stuck blade causes rapid wearing and tearing behind the sump oil.During high speed, the pressure reduction at blade two ends easily causes the leaf abscission stator surface, causes blade to come to nothing.Under the high pressure, blade and stator surface are easy to wear.Compare with gear pump, noise is big.
The plunger pump complex structure, part is many, makes difficulty, and how the price height is as high-pressure service pump.Similar with vane pump, this pump requires high to oil, easy stuck plunger behind the sump oil.Because the to-and-fro motion of plunger is at a high speed unsuitable.
Cycloid rotor pump is seen accompanying drawing 1, is depicted as existing cycloid rotor pump structure, and it is mainly by rotatingshaft 4, inside and outside rotor 6,7, the forward and backward end cap 2,3 and the pump housing 1 are formed, and the pump housing 1 has inlet port 12 and oil drain out 13, the internal rotor profile of tooth is a curtate epicycloid, and the external rotor profile of tooth is a circular arc.Its working principle is the inside and outside rotor by means of a pair of eccentric engagement, in engagement process, forms the several separate enclosed space.Along with the engagement rotation of inside and outside rotor, the volume of each enclosed space changes, and carries out suction oil.Because the inside and outside rotor number of teeth is few, the working pressure fluctuation is used for the occasion of mesolow greatly more under the high pressure low-speed conditions.Rotor required precision height, external rotor are the gear ring of circle-arc tooth, the manufacturing difficulty.Inside and outside eccentricity of rotor precision be difficult for to guarantee that if throw of eccentric is incorrect, the engagement with the inside and outside rotor of influence lowers efficiency, and produces noise, and is serious even make rotor damage etc.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of interior engagement cycloid rotor pump, solves manufacturing complexity in the prior art, and service condition requires high, and is easy to wear, the defective that noise is big.
Technological scheme
Engagement cycloid rotor pump in a kind of, comprise the pump housing 1, the front and rear cover 2,3 of the pump housing 1, pass the rotatingshaft 4 on the pump housing center line of being positioned at of front cover 2, the pump housing 1 and rear end cover 3, pump housing mesopore 5 is arranged in the middle of the pump housing 1, be that axis has internal rotor 6 with pump housing center line in the hole, internal rotor 6 is the curtate epicycloid gear, fixed connection is on rotatingshaft 4, it is characterized in that: pump housing mesopore 5 and internal rotor 6 eccentric settings, with the tangent external rotor 7 that is equipped with of pump housing mesopore 5 hole walls, external rotor 7 is a pinwheel in the hole, and each pin tooth of pinwheel and each epicycloidal wheel tooth of internal rotor 6 mesh simultaneously.
The pin 10 of 8,9 on backing plate and be enclosed within the outer sleeve 11 of each pin 10 before and after backing plate 8,9, a plurality of being fixed on before and after described external rotor 7 comprises, pin 10 and sleeve 11 form the pin tooth, preceding backing plate 8 is between the front cover 2 and the pump housing 1, and back backing plate 9 is between the rear end cover 3 and the pump housing 1.
The pin number of teeth of described external rotor 7 is Duoed a tooth than internal rotor 6 tooth numbers at most.
Beneficial effect
Engagement cycloid rotor pump has been optimized the structure of external rotor in this, has reduced the volume of oil hydraulic pump, has simplified installation and process for machining and manufacturing, and the pin number of teeth of external rotor can be more, guaranteed the continuity of suction oil, and flowed fluctuation is little, pressure surge is little, working stability, long service life.
Description of drawings
Fig. 1 is the plan view of prior art.
Fig. 2 is the prior art side sectional view.
Fig. 3 is the utility model side sectional view.
Fig. 4 is the utility model top plan view sectional view.
Embodiment
Below in conjunction with specific embodiment, further set forth the utility model.
A kind of cycloid rotor pump, its structure as shown in Figure 3.This pump mainly is made up of rotatingshaft 4, internal rotor 6, sleeve 11, front cover 2, preceding backing plate 8, the pump housing 1, back backing plate 9, rear end cover 3, pin 10, pump housing mesopore 5, inlet port 12 and oil drain out 13 etc.Internal rotor 6 is the curtate epicycloid gear, with rotatingshaft 4 fixed connections.Sleeve 11 is sleeved on the pin 10, is Spielpassung.Pin 10 and preceding backing plate 8 and back backing plate 9 fixed connections.Sleeve 11, preceding backing plate 8, back backing plate 9, pin 10 constitute pinwheel, as external rotor 7.Sleeve 11 and pin 10 constitute the pin tooth of pinwheels.The pin number of teeth on the external rotor 7 is at most than more than 6 teeth of internal rotor.Pin tooth on the cycloidal gear teeth of internal rotor 6 and the external rotor 7 is meshing with each other.Internal rotor 6, external rotor 7 and pump housing mesopore 5 hole walls constitute the tooth cavity of several sealings.External rotor 7 is sleeved in the pump housing mesopore 5, and the pin tooth on the external rotor 7 contacts with the inner hole wall of pump housing mesopore 5 is tangent.Pump housing mesopore 5 meshes with each epicycloidal wheel tooth on the assurance internal rotor 6 and each the pin tooth on the external rotor 7 simultaneously with respect to internal rotor 6 eccentric settings.
Working principle: the gear that internal rotor 6, external rotor 7 rotate for the dead axle that is meshing with each other.By means of being meshing with each other of internal rotor 6 and external rotor 7, and pump housing mesopore 5 hole walls form a plurality of enclosed cavities.Rotatingshaft 4 drives internal rotor 6 and rotates, and internal rotor 6 drives the external rotor 7 dead axles rotation with its engagement again, and the rotational axis of external rotor 7 is the interior axis of pump housing mesopore 5.Internal rotor 6 center O
1With external rotor 7 center O
2Line of centers enclosed cavity is divided into two-part.Along with the rotation of internal rotor 6, the volume of each enclosed cavity changes, line of centers O
1O
2The ascending variation of the volume of the enclosed cavity of one side constitute oil sucting cavity and inhale, and the descending variation of the volume of the cavity of opposite side constitutes oil-discharging cavity and carries out oil extraction.In the course of the work, the oil of oil sucting cavity inspiration is along with the rotation of gear, discharges after being brought to oil-discharging cavity.The suction of this two-part tooth cavity, oil extraction are always carried out simultaneously, have guaranteed the continuity of suction, oil extraction, and each suction, oil drain quantity constantly is basic identical, and flowed fluctuation is little, and pressure surge is little.
The pin tooth of newly-designed external rotor 7 directly is made of sleeve 11 and pin 10, and utilize pump housing mesopore 5 and internal rotor 6 off-centre to be provided with, processing and mounting process are simplified, and prior art having relatively high expectations to processing technology, convenient because of processing technology in addition, external rotor can be provided with a plurality of pin teeth, guaranteed the continuity of suction, oil extraction when then working, and flowed fluctuation is little.
Claims (3)
1. mesh cycloid rotor pump in one kind, comprise the pump housing (1), the front and rear cover (2 of the pump housing (1), 3), pass front cover (2), the pump housing (1) and rear end cover (3) be positioned at rotatingshaft (4) on the pump housing center line, pump housing mesopore (5) is arranged in the middle of the pump housing (1), be that axis has internal rotor (6) with pump housing center line in the hole, internal rotor (6) is the curtate epicycloid gear, fixed connection is on rotatingshaft (4), it is characterized in that: pump housing mesopore (5) is provided with internal rotor (6) is eccentric, with the tangent external rotor (7) that is equipped with of pump housing mesopore (5) hole wall, external rotor (7) is a pinwheel in the hole, and each pin tooth of pinwheel and each epicycloidal wheel tooth of internal rotor (6) mesh simultaneously.
2. a kind of interior engagement cycloid rotor pump as claimed in claim 1, it is characterized in that: described external rotor (7) is a pinwheel, pin (10) between backing plates (8,9) and be enclosed within each pin (10) sleeve (11) outward before and after backing plate (8,9), a plurality of being fixed on before and after comprising, pin (10) and sleeve (11) form the pin tooth, preceding backing plate (8) is positioned between the front cover (2) and the pump housing (1), and back backing plate (9) is positioned between the rear end cover (3) and the pump housing (1).
3. as claimed in claim 1 or 2 a kind of in the engagement cycloid rotor pump, it is characterized in that: the pin number of teeth of described external rotor (7) is Duoed a tooth than internal rotor (6) tooth number at most.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200601465U CN201228632Y (en) | 2008-06-24 | 2008-06-24 | Inside engaged cycloidal rotor pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200601465U CN201228632Y (en) | 2008-06-24 | 2008-06-24 | Inside engaged cycloidal rotor pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201228632Y true CN201228632Y (en) | 2009-04-29 |
Family
ID=40633583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200601465U Expired - Fee Related CN201228632Y (en) | 2008-06-24 | 2008-06-24 | Inside engaged cycloidal rotor pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201228632Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900110A (en) * | 2010-07-30 | 2010-12-01 | 上海师范大学 | Eccentric double-cycloid rotor pump |
| CN102182678A (en) * | 2011-06-01 | 2011-09-14 | 张意立 | Novel three-line meshed internal-pressure sealed pump |
-
2008
- 2008-06-24 CN CNU2008200601465U patent/CN201228632Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900110A (en) * | 2010-07-30 | 2010-12-01 | 上海师范大学 | Eccentric double-cycloid rotor pump |
| CN102182678A (en) * | 2011-06-01 | 2011-09-14 | 张意立 | Novel three-line meshed internal-pressure sealed pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201228632Y (en) | Inside engaged cycloidal rotor pump | |
| CN105423105A (en) | Rotor type oil pump | |
| CN2821225Y (en) | Rotor pump | |
| CN103291612A (en) | Harmonic gear pump | |
| CN100520067C (en) | Rotor pump with double pendulum lines | |
| CN100572813C (en) | Pin-hole type cycloid rotor pump | |
| CN211950842U (en) | Axial oil outlet cycloid pump capable of realizing self-fastening | |
| CN100357605C (en) | Cycloidal pin gear hydraulic pump | |
| CN100504063C (en) | Pore-pin type cycloid rotor motor | |
| CN112879283B (en) | Triangular rotor pump | |
| CN214424691U (en) | Triangular rotor pump | |
| CN202370828U (en) | Rotor type oil pump | |
| CN102477936A (en) | Triangular-rotor hydraulic motor | |
| CN101900110A (en) | Eccentric double-cycloid rotor pump | |
| CN104895781A (en) | Internal gear pump | |
| CN206290430U (en) | A kind of external gear for fluid transmission pump | |
| CN203215234U (en) | Tri-rotor engine oil pump | |
| CN203549340U (en) | Variable-displacement pump | |
| CN201615330U (en) | Improved motorcycle oil pump | |
| CN201206544Y (en) | Polygon rotor pump of planet epicyclic train | |
| CN215256631U (en) | 2D hydraulic pump | |
| CN1862032A (en) | Dual cycloid hydraulic motor | |
| CN220979844U (en) | Novel cycloidal gear and cycloidal gear pump | |
| CN213450823U (en) | Novel cycloid rotor pump | |
| CN2535578Y (en) | Cycloid type autombile fuel-oil pump core |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090429 Termination date: 20110624 |