CN204226601U - A kind of pump gear - Google Patents
A kind of pump gear Download PDFInfo
- Publication number
- CN204226601U CN204226601U CN201420697672.8U CN201420697672U CN204226601U CN 204226601 U CN204226601 U CN 204226601U CN 201420697672 U CN201420697672 U CN 201420697672U CN 204226601 U CN204226601 U CN 204226601U
- Authority
- CN
- China
- Prior art keywords
- gear
- utility
- model
- guard film
- oil guard
- 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
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- Lubricants (AREA)
- Rotary Pumps (AREA)
- Gears, Cams (AREA)
Abstract
The utility model relates to a kind of pump gear; comprise gear; the root circle of described gear is provided with at least 17 gear teeth; the Surface of action of the described gear teeth is divided into two regions; one of them region is transition zoon; another region is lubrication district, and described lubrication district is provided with the oil guard film of the similar cushion pad of one deck, adds oiliness improver and extreme pressure anti-wear additives in described oil guard film.The utility model, by setting up oil guard film in lubrication district, is engaged when can prevent Gear Contact from rubbing, and weldering is melted and scratch, effectively ensure that gear surface, improves lubrication effect, reduce the abrasion condition of the flank of tooth.
Description
Technical field
The utility model relates to a kind of gear, particularly relates to a kind of pump gear.
Background technique
Gear pump is a kind of is the device of hydraulic energy by changes mechanical energy, and it provides the liquid with certain pressure and flow for hydraulic system, is the important component part of hydraulic system.Gear pump relies on the swept volume formed between pumping cylinder and engaging gear to change and the mobile rotary pump carried liquid or make it supercharging, it forms two enclosed spaces by two gears, the pump housing and front and rear covers, when pinion rotation, the volume in space of side of being out of gear is large from little change, form vacuum, sucked by liquid, liquid from diminishing greatly, and is clamp-oned in pipeline and is gone by the volume in the space of gears meshing side.
When engagement driving, there is relative sliding between two involute profiles in gear, under load effect, the dust between the flank of tooth, hard bits grain can cause tooth surface abrasion.Serious wearing and tearing will make the distortion of flank of tooth involute profile, and backlash increases, thus produce impact and noise, even breaking off gear teeth occur.In exposed drive, especially in many dusts occasion, tooth surface abrasion is the principal mode of tooth failure.In prior art, mainly prevent by the roughness of employing closed-type gear transmission, the reduction flank of tooth or alleviate the wearing and tearing of the flank of tooth, but no matter be the roughness using enclosed gear or reduce the flank of tooth, all inevitably improve the cost of processing, especially the method improving surface roughness is adopted, very strict to the requirement of processing technology.
Model utility content
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of pump gear.
The utility model is achieved through the following technical solutions:
A kind of pump gear; comprise gear; the root circle of described gear is provided with at least 17 gear teeth; the Surface of action of the described gear teeth is divided into two regions; one of them region is transition zoon; another region is lubrication district, and described lubrication district is provided with the oil guard film of the similar cushion pad of one deck.
As optimal technical scheme of the present utility model, in described oil guard film, add oiliness improver and extreme pressure anti-wear additives.
As optimal technical scheme of the present utility model, described oiliness improver is identical with the ratio of extreme pressure anti-wear additives.
As optimal technical scheme of the present utility model, the thickness of described oil guard film is 10-100 μm.
For improving film forming ability and improving anti-extreme pressure, in glossy synovial membrane, add oiliness improver, extreme pressure anti-wear additives etc. in right amount.Add oiliness improver and can increase the physical absorption of lubricant oil on gear surface and chemical adsorption capacity further, improve the lubrication effect of oil film, and effectively prevent from getting rid of oil, improve the utilization ratio of oil, reduce oil consumption cost.Add extreme pressure anti-wear additives and can generate one deck chemical reaction solid protective film at gear surface.When large small gear heavy load transmission, two face extruding, and generation High Temperature High Pressure of sliding, extreme pressure anti-wear additives produces extremely rapidly chemical reaction with gear under the high temperature conditions and generates chemical films.Film rupture may be made at the micro-bulge on tooth engagement process middle gear surface, but projecting point can be polished in dry friction relative movement, simultaneously, new chemical reaction film is once more generated under localized hyperthermia, on the flank of tooth, one deck chemical reaction film is formed with regard to complete through break-in after a while, its shearing stress is lower than pure gear, and its fusing point is higher than oiling agent.So be engaged when can prevent Gear Contact from rubbing, weldering is melted and scratch, effectively ensure that gear surface, improves lubrication effect.
Compared with prior art, the beneficial effects of the utility model are: the utility model, by setting up oil guard film in lubrication district, is engaged when can prevent Gear Contact from rubbing; weldering is melted and scratch; effectively ensure that gear surface, improve lubrication effect, reduce the abrasion condition of the flank of tooth.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1-gear; The 2-gear teeth; 3-Surface of action; 31-transition zoon; 32-lubricates district; 4-oil guard film.
Embodiment
In order to make the purpose of this utility model, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Refer to Fig. 1, Fig. 1 is structural representation of the present utility model.
Described a kind of pump gear, comprises gear 1, and the root circle of described gear 1 is provided with at least 17 gear teeth 2, prevents root and cuts.The Surface of action 3 of the described gear teeth 2 is divided into two regions, and one of them region is transition zoon 31, and another region is lubrication district 32, and described lubrication district 32 is provided with the oil guard film 4 of the similar cushion pad of one deck.Oiliness improver and extreme pressure anti-wear additives is added in described oil guard film 4; add oiliness improver and can increase the physical absorption of lubricant oil on gear surface and chemical adsorption capacity further, improve the lubrication effect of oil film, and effectively prevent from getting rid of oil; improve the utilization ratio of oil, reduce oil consumption cost.Add extreme pressure anti-wear additives and can generate one deck chemical reaction solid protective film at gear surface.Described oiliness improver is identical with the ratio of extreme pressure anti-wear additives, and the thickness of described oil guard film 4 is 50 μm.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (4)
1. a pump gear; comprise gear (1); the root circle of described gear (1) is provided with at least 17 gear teeth (2); it is characterized in that: the Surface of action (3) of the described gear teeth (2) is divided into two regions; one of them region is transition zoon (31); another region is lubrication district (32), and described lubrication district (32) is provided with the oil guard film (4) of the similar cushion pad of one deck.
2. a kind of pump gear according to claim 1, is characterized in that: add oiliness improver and extreme pressure anti-wear additives in described oil guard film (4).
3. a kind of pump gear according to claim 2, is characterized in that: described oiliness improver is identical with the ratio of extreme pressure anti-wear additives.
4. a kind of pump gear according to claim 2, is characterized in that: the thickness of described oil guard film (4) is 10-100 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420697672.8U CN204226601U (en) | 2014-11-20 | 2014-11-20 | A kind of pump gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420697672.8U CN204226601U (en) | 2014-11-20 | 2014-11-20 | A kind of pump gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204226601U true CN204226601U (en) | 2015-03-25 |
Family
ID=52924700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420697672.8U Expired - Fee Related CN204226601U (en) | 2014-11-20 | 2014-11-20 | A kind of pump gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204226601U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122440A (en) * | 2016-08-15 | 2016-11-16 | 常州市武进金城齿轮有限公司 | Add solid gear |
| CN107725728A (en) * | 2017-10-31 | 2018-02-23 | 郑明存 | A kind of wear-resisting generator speed increasing mechanism gear assembly |
-
2014
- 2014-11-20 CN CN201420697672.8U patent/CN204226601U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122440A (en) * | 2016-08-15 | 2016-11-16 | 常州市武进金城齿轮有限公司 | Add solid gear |
| CN107725728A (en) * | 2017-10-31 | 2018-02-23 | 郑明存 | A kind of wear-resisting generator speed increasing mechanism gear assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150325 Termination date: 20161120 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |