CN203362508U - Novel duplex cycloid pump - Google Patents
Novel duplex cycloid pump Download PDFInfo
- Publication number
- CN203362508U CN203362508U CN 201320415332 CN201320415332U CN203362508U CN 203362508 U CN203362508 U CN 203362508U CN 201320415332 CN201320415332 CN 201320415332 CN 201320415332 U CN201320415332 U CN 201320415332U CN 203362508 U CN203362508 U CN 203362508U
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Abstract
The utility model relates to a hydraulic oil pump, in particular to a novel duplex cycloid pump. The novel duplex cycloid pump mainly solves the technical problems that the oil pump is complicated in structure, high in noise and short in service life in the prior art. The novel duplex cycloid pump comprises a pump body, wherein the two sides of the pump body are sequentially connected a first pump cover and a second pump cover; an inner cavity of the pump body is provided with a high-displacement outer rotor and a high-displacement inner rotor which are in two tooth difference structures, as well as a low-displacement outer rotor and a low-displacement inner rotor; the low-displacement outer rotor and the low-displacement inner rotor drive two rotor pairs to rotate through shafts on two needle bearings located in the pump body; an external power source is driven by a transmission gear; the cycloid high-displacement outer rotor and the cycloid high-displacement inner rotor divide the inner cavity of the pump body into a first oil absorption cavity and a first oil pressure cavity; the first oil absorption cavity and the first oil pressure cavity are communicated with a first oil inlet and a first oil outlet respectively; the low-displacement outer rotor and the low-displacement inner rotor divide the inner cavity of the pump body into a second oil absorption cavity and a second oil pressure cavity; and the second oil absorption cavity and the second oil pressure cavity are communicated with a second oil inlet and a second oil outlet respectively.
Description
Technical field
The utility model relates to a kind of hydraulic-pressure pump, especially relates to a kind of novel duplex Gerotor pump.
Background technique
Train be communications and transportation particularly freight transportation and the long-distance transport in a kind of very important traffic tool, it is relatively cheap that it has freight rate, running speed is relatively fast, the special advantage that freight volume is large.In China, due to the imbalance of the western and eastern's economic development and resource distribution, so that make train as a kind of extremely important traffic tool of China.In recent years, the development of China's train is a day crescent benefit.From the steam locomotive of first stage, the internal combustion locomotive of second stage, the electric locomotive of phase III, the harmonious railway system of fourth stage up to now, only pass through the development time of many decades.
On April 11st, 2008, the CRH3 that first domestic speed per hour is 350 kilometers " Harmony " rail motor set roll off the production line in Tangshan track bus limited liability company of China northern car group, indicate that the modernization of Chinese Railway technical equipment obtains another great achievement, China becomes one of only several countries that can manufacture 350 kilometers high-speed railway Mobile Equipments of speed per hour in the world thus.The high speed development of train technology, be to guarantee the normal operation of train, and the maintenance car of its corresponding supporting track train is had higher requirement.Maintenance car must, to arrive and to specify maintenace point sooner, must have longer working life, and must have lower noise, less vibration and better travelling comfort.Yet traditional maintenance car is with low content of technology, complex structure, reliability is low, and noise is large, can not meet the usage requirement of modern day user.Its attached supporting hydraulic-pressure pump, as its transmission system middle gear case hydraulic part core, has very huge effect.
The model utility content
The utility model is to provide a kind of novel duplex Gerotor pump, and it is mainly the technical problem that solves that the existing oil pump structure of prior art is complicated, noise is large, the life-span is low etc.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals:
Novel duplex Gerotor pump of the present utility model, comprise the pump housing, described pump housing both sides connect the first pump cover and the second pump cover successively, its inner chamber is respectively fitted with the poor large discharge capacity external rotor of two teeth, large discharge capacity internal rotor, and small displacement external rotor, the small displacement internal rotor drives the secondary rotation of two cover rotors by the axle be positioned on two needle bearings in the pump housing, and external power supply drives by driving gear, the large discharge capacity external rotor of cycloid, turn pump housing inner chamber is divided into to the first oil sucting cavity in large discharge capacity, the first pumping cavity, the first oil sucting cavity, the first pumping cavity is communicated with respectively the first filler opening, the first oil outlet, the small displacement external rotor, the small displacement internal rotor is divided into the second oil sucting cavity by pump housing inner chamber, the second pumping cavity, the second oil sucting cavity, the second pumping cavity is communicated with respectively the second filler opening, the second oil outlet.The intermeshing running of two cover rotors, be divided into oil sucting cavity and pumping cavity by pump housing inner chamber, and oil sucting cavity and pumping cavity are communicated with respectively oil inlet and outlet, thereby form complete hydraulic circuit.Hydraulic-pressure pump adopts the structure of duplex, and two sleeve gear pairs are installed on pump housing inner chamber simultaneously, to have reached compact structure, simple, installs reliably, has reduced the impact of assembly precision, has greatly optimized the structure of gear-box, has reduced line arrangement.Large discharge capacity external rotor, large discharge capacity internal rotor adopt two more excellent tooth differential structures, and the rotor pair of this class formation has the advantages that discharge capacity is large, meshing performance good, noise is low, requisite space is little.Small displacement external rotor, small displacement internal rotor adopt conventional gerotor structure scheme, and because its required discharge capacity is less, design lines speed is low, and conventional cycloid has completed and can meet the demand of using.Adopt needle bearing in oil pump, the certain radial load brought for bearing driving gear, adopt needle bearing can effectively bear certain radial load and reliable assembling and positioning is provided.
As preferably, described axle and the mode that large discharge capacity internal rotor adopts hot jacket to be integrated, both reduced the waste of integrative-structure to resource, guaranteed again the required precision of assembling, and axle is connected with small displacement internal rotor employing key.
As preferably, the described pump housing, the first pump cover, the second pump cover are located by seam, adopt the plum blossom screw to connect.So both guarantee the precision of assembling, guaranteed again the reliability of assembling.
As preferably, described small displacement internal rotor and the second pump cover are provided with oil-return groove.Oil-return groove can guarantee oil pump in the situation that running guarantees the pressure balance of the secondary both sides of rotor, has improved the oil pump reliability.
Therefore, the utility model adopts novel duplex Gerotor pump, has adopted the structural type of duplex, has reduced the line arrangement on the gear-box, and has the characteristic of property of low noise, high reliability.
The accompanying drawing explanation
Accompanying drawing 1 is internal structure schematic diagram of the present utility model;
Accompanying drawing 2 is external structure schematic diagram of the present utility model;
Accompanying drawing 3 is working principle schematic diagram of large discharge capacity external rotor, large discharge capacity internal rotor;
Accompanying drawing 4 is working principle schematic diagram of small displacement external rotor, small displacement internal rotor.
Component, position and numbering in figure: the pump housing 1, the first pump cover 2, the second pump cover 3, large discharge capacity external rotor 4, large discharge capacity internal rotor 5, small displacement external rotor 6, small displacement internal rotor 7, axle 8, needle bearing 9, driving gear 10, key 11, plum blossom screw 12, oil-return groove 13, the first oil sucting cavity 14, the first pumping cavity 15, the first filler opening 16, the first oil outlet 17, the second oil sucting cavity 18, the second pumping cavity 19, the second filler opening 20, the second oil outlet 21.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: the novel duplex Gerotor pump of this example, as Fig. 1, comprise the pump housing 1, the external power supply of the pump housing drives by driving gear 10, as Fig. 2, pump housing both sides connect the first pump cover 2 and the second pump cover 3 successively, and the pump housing, the first pump cover, the second pump cover are located by seam, adopt plum blossom screw 12 to connect.Its inner chamber is respectively fitted with the poor large discharge capacity external rotor 4 of two teeth, large discharge capacity internal rotor 5, and small displacement external rotor 6, small displacement internal rotor 7 drives the secondary rotation of two cover rotors by the axle 8 be positioned on two needle bearings 9 in the pump housing, and external power supply drives by driving gear 10, the large discharge capacity external rotor of cycloid, turn pump housing inner chamber is divided into to the first oil sucting cavity 14 in large discharge capacity, the first pumping cavity 15, the first oil sucting cavity, the first pumping cavity is communicated with respectively the first filler opening 16, the first oil outlet 17, the small displacement external rotor, the small displacement internal rotor is divided into the second oil sucting cavity 18 by pump housing inner chamber, the second pumping cavity 19, the second oil sucting cavity, the second pumping cavity is communicated with respectively the second filler opening 20, the second oil outlet 21.Axle and the mode that discharge capacity internal rotor 5 adopts hot jackets to be integrated greatly, axle adopts key 11 to be connected with the small displacement internal rotor.Small displacement internal rotor and the second pump cover are provided with oil-return groove 13.
During use, as Fig. 3, Fig. 4, at first power source by direction rotation as shown in the figure, drives respectively large discharge capacity internal rotor 5,7 runnings of small displacement internal rotor by driving gear 10 band moving axis 8, and the large discharge capacity external rotor 4, the small displacement external rotor 6 that are meshed with it rotate thereupon.The gear teeth that now meshing in the first oil sucting cavity 14, the second oil sucting cavity 18 are thrown off gradually and are increased sealed volume, form parital vacuum, fluid, under the effect of atmospheric pressure, enters the first oil sucting cavity 14, the second oil sucting cavity 18 through the first filler opening 16, the second filler opening 20; The gear teeth mesh in succession, and when the gear teeth enter between cog, volume reducing, bring to the fluid of the first pumping cavity 15, the second pumping cavity 19 from the first oil outlet 17, the second oil outlet 21 excavationg pumps from the first oil sucting cavity 14, the second oil sucting cavity 18.
The foregoing is only specific embodiment of the utility model, but structure characteristic of the present utility model is not limited to this, any those skilled in the art is in field of the present utility model, and the variation of doing or modification all are encompassed among the scope of the claims of the present utility model.
Claims (4)
1. a novel duplex Gerotor pump, comprise the pump housing (1), it is characterized in that the described pump housing (1) both sides connect the first pump cover (2) and the second pump cover (3) successively, and its inner chamber is respectively fitted with the poor large discharge capacity external rotor (4) of two teeth, large discharge capacity internal rotor (5), and small displacement external rotor (6), small displacement internal rotor (7) drives the secondary rotation of two cover rotors by the axle (8) be positioned on two needle bearings (9) in the pump housing (1), and external power supply drives by driving gear (10), the large discharge capacity external rotor of cycloid, turn pump housing inner chamber is divided into to the first oil sucting cavity (14) in large discharge capacity, the first pumping cavity (15), the first oil sucting cavity, the first pumping cavity is communicated with respectively the first filler opening (16), the first oil outlet (17), the small displacement external rotor, the small displacement internal rotor is divided into the second oil sucting cavity (18) by pump housing inner chamber, the second pumping cavity (19), the second oil sucting cavity, the second pumping cavity is communicated with respectively the second filler opening (20), the second oil outlet (21).
2. novel duplex Gerotor pump according to claim 1, is characterized in that the mode that described axle (8) and large discharge capacity internal rotor (5) adopt hot jacket to be integrated, and axle adopts key (11) to be connected with small displacement internal rotor (7).
3. novel duplex Gerotor pump according to claim 1 and 2, is characterized in that the described pump housing (1), the first pump cover (2), the second pump cover (3) locate by seam, adopts plum blossom screw (12) to connect.
4. novel duplex Gerotor pump according to claim 1 and 2, is characterized in that described small displacement internal rotor (7) and the second pump cover (3) are provided with oil-return groove (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320415332 CN203362508U (en) | 2013-07-12 | 2013-07-12 | Novel duplex cycloid pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320415332 CN203362508U (en) | 2013-07-12 | 2013-07-12 | Novel duplex cycloid pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203362508U true CN203362508U (en) | 2013-12-25 |
Family
ID=49810285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320415332 Expired - Lifetime CN203362508U (en) | 2013-07-12 | 2013-07-12 | Novel duplex cycloid pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203362508U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513285A (en) * | 2019-08-28 | 2019-11-29 | 西安法士特汽车传动有限公司 | A kind of double-united oil pump |
-
2013
- 2013-07-12 CN CN 201320415332 patent/CN203362508U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513285A (en) * | 2019-08-28 | 2019-11-29 | 西安法士特汽车传动有限公司 | A kind of double-united oil pump |
| CN110513285B (en) * | 2019-08-28 | 2021-12-07 | 西安法士特汽车传动有限公司 | Duplex oil pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131225 |
|
| CX01 | Expiry of patent term | ||
| CU01 | Correction of utility model |
Correction item: Termination upon expiration of patent Correct: Revocation of Patent Expiration and Termination False: On July 28, 2023, the expiration and termination of the 39-volume 3002 patent Number: 30-02 Volume: 39 |
|
| CU01 | Correction of utility model |