CN203362510U - High-speed external engaging helical gear pump - Google Patents
High-speed external engaging helical gear pump Download PDFInfo
- Publication number
- CN203362510U CN203362510U CN 201320415333 CN201320415333U CN203362510U CN 203362510 U CN203362510 U CN 203362510U CN 201320415333 CN201320415333 CN 201320415333 CN 201320415333 U CN201320415333 U CN 201320415333U CN 203362510 U CN203362510 U CN 203362510U
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- Prior art keywords
- pump
- gear
- pump housing
- driving
- driving shaft
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Abstract
The utility model relates to a hydraulic oil pump, in particular to a high-speed external engaging helical gear pump. The helical gear pump mainly solves the technical problems that the reliability of oil pump performance output is poorer when a gear box is at a low idling speed, and noise of an oil pump is larger, the transmission is relatively unstable, and the reliability is poorer when the gear box is at a high speed in the prior art. The helical gear pump comprises a pump body (1), and is characterized in that the pump body (1) is connected with a pump cover (2); the pump body is internally provided with a driving shaft (3); a key (4) is arranged on the driving shaft; the driving shaft is connected with a driven shaft (7) by a driving gear (5) and a driven gear (6) which are mutually engaged; and the driving gear and the driven gear are external engaging helical gears, and divide a cavity body in the pump body into an oil absorption cavity (8) and an oil pressure cavity (9).
Description
Technical field
The utility model relates to a kind of hydraulic-pressure pump, especially relates to a kind of high speed outer gearing helical-gear pump.
Background technique
Along with developments such as transport by sea, marine fishings, the application of a large amount of newborn technology.The production technology of shipping industry is development innovation thereupon also.The rapid technological improvement of diesel engine, modern diesel engine has the advantages such as volume is little, and rotating speed is fast, and noise is little.The gear-box used on marine machinery, to the requirement raising greatly as compared with the past of supporting oil transfer pump unit.But, when there is the slow-speed of revolution in present gear-box, the reliability of oil pump performance output is poor, during high rotating speed, the noise of oil pump is large, transmission more not steadily, poor etc. the problem of reliability.
The model utility content
The utility model is to provide a kind of high speed outer gearing helical-gear pump, it is mainly that the solution prior art is existing low when speed, the reliability of oil pump performance output is poor, during high rotating speed, the noise of oil pump is large, transmission more not steadily, poor etc. the technical problem of reliability.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals:
High speed outer gearing helical-gear pump of the present utility model, comprise the pump housing, the described pump housing is connected with pump cover, be provided with driving shaft in the pump housing, driving shaft is provided with key, driving shaft is connected with driven shaft by intermeshing driving gear, driven gear, and driving gear, driven gear are the outer gearing helical gear, and driving gear, driven gear are divided into oil sucting cavity, pumping cavity by the cavity in the pump housing.The utility model is by completing suction, oil extraction into and out of hydraulic fluid port and oil duct.
Oil pump performance parameter of the present utility model is as follows:
Theoretical flowing capacity: 32,40,50,63,80ml/r(is not limited to this 5 kinds of models)
Rated pressure: 2.5MPa
Rotating speed: 500-3000r/min
Volumetric efficiency: during 1500r/min >=90%
Gear pair adopts the design of outer gearing helical gear, through strict optimization, design, this gear pair has less external diameter, make it when running up, still keep lower linear velocity, add reasonable tooth profile parameter design, have higher running contact ratio, from having guaranteed that its engagement driving noise when the high speed is low, stable drive, high, the flow of efficiency, Output pressure characteristic of property stably during low speed.Oil pump structure is the disome formula, and compact structure is lightweight, and reduces the assembly precision error.
As preferably, be provided with composite bearing between the described pump housing, pump cover and driving shaft, driven shaft, can bear under complicated, severe operating mode and turn round.
As preferably, described pump cover is provided with spill port and communicates with oil sucting cavity, guarantees that the hydraulic oil of the composite bearing in the pump housing, pump cover can form path, reaches good cooling and lubricated conduct, the working life of having improved composite bearing.
As preferably, being connected by symmetrically arranged 2 locating studs between the described pump housing and pump cover located, and the pump housing, pump cover are fixed with outer-hexagonal bolts.Accurate positioning, install reliable.
As preferably, the junction plane of the described pump housing and pump cover is provided with the O RunddichtringO, guarantees sealing fully between the pump housing and pump cover.
As preferably, described pump housing outer end is provided with rolling bearing, guarantees that oil pump can bear certain radial load, and has improved the reliability of oil pump.
Therefore, the utlity model has that low speed efficiency is high, flow, Output pressure be steady, the high speed noise is low, the little characteristic of property of pulsing, and this pump is lightweight, installs to connect simply, uses reliably, extremely meets the requirement of modern marine gearbox to supporting oil pump.
The accompanying drawing explanation
Accompanying drawing 2 is external structure schematic diagram of the present utility model;
Accompanying drawing 3 is structural representations of the utility model pump cover;
Accompanying drawing 4 is A-A cross-sectional view of Fig. 3;
Accompanying drawing 5 is working principle schematic diagram of the present utility model.
Component, position and numbering in figure: the pump housing 1, pump cover 2, driving shaft 3, key 4, driving gear 5, driven gear 6, driven shaft 7, oil sucting cavity 8, pumping cavity 9, composite bearing 10, spill port 11, locating stud 12, outer-hexagonal bolts 13, O RunddichtringO 14, rolling bearing 15.
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 high speed outer gearing helical-gear pump that this is routine, as shown in Figure 1, Figure 2, Fig. 3, comprise the pump housing 1, the pump housing is connected with pump cover 2, and being connected by symmetrically arranged 2 locating studs 12 between the pump housing and pump cover located, and the pump housing, pump cover are fixing with outer-hexagonal bolts 13.The junction plane of the pump housing and pump cover is provided with O RunddichtringO 14.Pump housing outer end is provided with rolling bearing 15.Be provided with driving shaft 3 in the pump housing, driving shaft is provided with key 4, driving shaft is connected with driven shaft 7 by intermeshing driving gear 5, driven gear 6, and driving gear, driven gear are the outer gearing helical gear, and driving gear, driven gear are divided into oil sucting cavity 8, pumping cavity 9 by the cavity in the pump housing.Be provided with composite bearing 10 between the pump housing, pump cover and driving shaft, driven shaft.As Fig. 4, pump cover is provided with spill port 11 and communicates with oil sucting cavity 8.
During use, as Fig. 5, at first power source drives driving shaft 3 by direction rotation as shown in the figure, driving driving gear 5 by key 4 rotates, driving gear drives driven gear 6 and rotates, and the gear teeth that now meshing in oil sucting cavity 8 are thrown off gradually and increased sealed volume, forms parital vacuum, fluid, under the effect of atmospheric pressure, enters oil sucting cavity 8 through fuel sucking pipe; The gear teeth mesh in succession, and when the gear teeth enter between cog, volume reducing, bring to the fluid of pumping cavity 9 respectively from oil outlet is forced out pump from oil sucting cavity 8.
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 (6)
1. a high speed outer gearing helical-gear pump, comprise the pump housing (1), it is characterized in that the described pump housing (1) is connected with pump cover (2), be provided with driving shaft (3) in the pump housing, driving shaft is provided with key (4), driving shaft is connected with driven shaft (7) by intermeshing driving gear (5), driven gear (6), and driving gear, driven gear are the outer gearing helical gear, and driving gear, driven gear are divided into oil sucting cavity (8), pumping cavity (9) by the cavity in the pump housing.
2. high speed outer gearing helical-gear pump according to claim 1, is characterized in that being provided with composite bearing (10) between the described pump housing (1), pump cover (2) and driving shaft (3), driven shaft (7).
3. high speed outer gearing helical-gear pump according to claim 1 and 2, is characterized in that described pump cover (2) is provided with spill port (11) and communicates with oil sucting cavity (8).
4. high speed outer gearing helical-gear pump according to claim 1 and 2, it is characterized in that locating being connected by symmetrically arranged 2 locating studs (12) between the described pump housing (1) and pump cover (2), the pump housing (1), pump cover (2) are fixing with outer-hexagonal bolts (13).
5. high speed outer gearing helical-gear pump according to claim 1 and 2, is characterized in that the described pump housing (1) and the junction plane of pump cover (2) are provided with O RunddichtringO (14).
6. high speed outer gearing helical-gear pump according to claim 1 and 2, is characterized in that the described pump housing (1) outer end is provided with rolling bearing (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320415333 CN203362510U (en) | 2013-07-12 | 2013-07-12 | High-speed external engaging helical gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320415333 CN203362510U (en) | 2013-07-12 | 2013-07-12 | High-speed external engaging helical gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203362510U true CN203362510U (en) | 2013-12-25 |
Family
ID=49810287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320415333 Expired - Lifetime CN203362510U (en) | 2013-07-12 | 2013-07-12 | High-speed external engaging helical gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203362510U (en) |
-
2013
- 2013-07-12 CN CN 201320415333 patent/CN203362510U/en not_active Expired - Lifetime
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131225 |