CN205606154U - High life gear oil pump - Google Patents
High life gear oil pump Download PDFInfo
- Publication number
- CN205606154U CN205606154U CN201620397388.8U CN201620397388U CN205606154U CN 205606154 U CN205606154 U CN 205606154U CN 201620397388 U CN201620397388 U CN 201620397388U CN 205606154 U CN205606154 U CN 205606154U
- Authority
- CN
- China
- Prior art keywords
- gear
- driven gear
- driving gear
- oil
- high pressure
- 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
- 239000012208 gear oil Substances 0.000 title claims abstract description 23
- 239000003921 oil Substances 0.000 claims abstract description 35
- 238000007789 sealing Methods 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 abstract description 5
- 230000001815 facial effect Effects 0.000 abstract 2
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 206010039792 Seborrhoea Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Landscapes
- Rotary Pumps (AREA)
Abstract
The utility model discloses a high life gear oil pump, including the pump body, two end covers, driving tooth shaft and driven gear axles and two axle sleeves, one side facial features towards driving gear and driven gear of axle sleeve should press the position punishment in oildom and low pressure oil absorption district do not to be equipped with the compensating groove by the high pressure, one side facial features towards driving gear and driven gear of axle sleeve should press the position department in oildom still to be equipped with two off -load holes by the high pressure, two off -load hole sites press inboard and corresponding with this high pressure of the compensating groove in oildom to press the compensating groove in oildom to communicate with each other in corresponding high pressure. The utility model discloses on prior art's basis, increased by two off -load holes, two off -load holes can keep communicating with each other with two super high nips all the time, and consequently, this fluid can be be at any time discharged via off -load hole, compensating groove to effectively reduce this oil pressure of locating, solve the pocketed oil problem, improved the bearing capacity and the life of gear oil pump, reduced the noise of gear oil pump.
Description
Technical field
This utility model relates to a kind of high life gear oil pump.
Background technology
Gear oil pump is applicable to carry the various liquid having lubricity, is widely used in many mechanical systems.Gear oil pump
Profile of tooth the most all use involute, its contact ratio E need to be more than 1, i.e. the gear teeth in front pair of meshing not yet completely disengage from
During engagement, rear a pair gear teeth have been enter into engagement, thus arise that two situations being simultaneously engaged the above gear teeth, thus
Between two path of contacts and pump end cap, form one close SPACE V (referred to as protected oil volume), as shown in Figure of description 1, this envelope
Close SPACE V neither to communicate with high pressure laminated oil zone, do not communicate with low pressure oil suction district, when gear continues to rotate, in high pressure force feed
Between the tooth that district is engaging-in, oil pressure increases sharply, and forms superelevation nip (in figure at the tooth paddy of upper side gear) so that gear shaft and
Bearing bears bigger shock loading, and makes oil temperature raise, and produces vibration and noise, has a strong impact on the service life of pump.
At present, solution is typically on side plate along two pitch circle common tangent directions, corresponding to high pressure laminated oil zone and low pressure
Oil suction zone position respectively digs two grooves, referred to as compensating groove 41, as shown in Figure of description 1, with this, fluid introduces high pressure pressure
Oil district and low pressure oil suction district.
But for guaranteeing the band with root circle, it is to avoid too linking up, compensating groove can not be too near to the center of two gears, also
Meaning that in the rotation process of two gears, compensating groove cannot be always maintained at communicating with protected oil volume V, and this is in superelevation
Still effective off-load can not be obtained for the oil pressure of nip.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of simple in construction, effectively solves the high life tooth of pocketed oil problem
Wheel oil pump.
In order to solve above-mentioned technical problem, this utility model adopts the following technical scheme that high life gear oil pump, including the pump housing,
It is respectively arranged on two end caps at the two ends of the pump housing, driving gear shaft and the driven gear shaft be located in the pump housing and is set in master
Two axle sleeves on movable gear shaft and driven gear shaft, described driving gear shaft is provided with driving gear, described driven gear shaft
Being provided with driven gear, described driving gear and driven gear and form engaged transmission, said two axle sleeve lays respectively at driving tooth
Wheel and the both sides of driven gear, the corresponding high pressure laminated oil zone of the one side towards driving gear and driven gear of described axle sleeve and low
The position in pressure oil suction district is respectively equipped with compensating groove, and the one side towards driving gear and driven gear of described axle sleeve is the highest
The position of pressure laminated oil zone is additionally provided with two unloading holes, and said two unloading hole is positioned at the compensating groove of corresponding high pressure laminated oil zone
The compensating groove of side high pressure laminated oil zone corresponding to this communicates.
Further, the one side towards end cap of described axle sleeve is provided with the seal groove of the figure of three, described seal groove
The sealing ring matched with it is inside installed.
Further, described sealing ring is provided with the sealing ring blend stop of the figure of three.
Further, the gear parameter of described driving gear and driven gear is: pressure angle 28 °, centre-to-centre spacing 33mm, 3.25
Modulus 10 tooth.
The beneficial effects of the utility model are: this utility model on the basis of existing technology, adds two unloading holes, two
Individual unloading hole can all the time with at two superelevation nip keep communicate, therefore, the fluid at this can at any time via unloading hole, unload
Lotus groove is discharged, thus effectively reduces the oil pressure at this, solves pocketed oil problem, improves bearing capacity and the use of gear oil pump
In the life-span, reduce the noise of gear oil pump；And this utility model will not destroy the band with root circle, it is to avoid undue ditch
Logical, effectively prevent the volumetric efficiency caused because of leakage from reducing.
Accompanying drawing explanation
Fig. 1 is the view that in prior art, compensating groove carries out off-load to closing SPACE V.
Fig. 2 is structural representation of the present utility model.
Fig. 3 is the medial surface structural representation of this utility model bottom bracket axle.
Fig. 4 is that compensating groove in this utility model, unloading hole are closed SPACE V and carried out the view of off-load.
Fig. 5 is the lateral surface structural representation of this utility model bottom bracket axle.
Fig. 6 is the structural representation of sealing ring in this utility model.
Fig. 7 is that the A-A of Fig. 6 is to sectional view.
Being labeled as of each parts in accompanying drawing: 1 pump housing, 2 end caps, 31 driving gear shafts, 32 driven gear shafts, 4 axle sleeves,
51 driving gears, 52 driven gears, 41 compensating grooves, 42 unloading holes, 43 seal grooves, 6 sealing rings, 61 sealing ring gears
Bar, V close space.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is further described:
See Fig. 2, this utility model high life gear oil pump, including the pump housing 1, two of the two ends being respectively arranged on the pump housing 1
End cap 2, the driving gear shaft 31 being located in the pump housing 1 and driven gear shaft 32 and be set in driving gear shaft 31 and from
Two axle sleeves 4 on movable gear shaft 32, described driving gear shaft 31 is provided with driving gear 51, described driven gear shaft 32
Being provided with driven gear 52, described driving gear 51 and driven gear 52 form engaged transmission, and said two axle sleeve 4 is respectively
It is positioned at driving gear 51 and the both sides of driven gear 52；
See Fig. 3, the corresponding high pressure of the one side towards driving gear 51 and driven gear 52 laminated oil zone of described axle sleeve 4 and
The position in low pressure oil suction district is respectively equipped with compensating groove 41, described axle sleeve 4 towards driving gear 51 and driven gear 52
The position of one side corresponding high pressure laminated oil zone is additionally provided with two unloading holes 42, and said two unloading hole 42 is positioned at corresponding high pressure
The inner side of the compensating groove 41 of laminated oil zone the compensating groove 41 of high pressure laminated oil zone corresponding to this communicate.
As shown in Figure 4, figure shows at the tooth paddy of the engaging-in driving gear 51 in high pressure laminated oil zone, forms supertension, and
During pinion rotation, symmetrically, supertension at the tooth paddy of driven gear 52, also can be formed, for the sake of succinct description,
Do not show at accompanying drawing, and this utility model is on the basis of existing technology, adds two unloading holes 42, two unloading holes
42 can keep communicating with superelevation nip at two all the time, and therefore, the fluid at this can be at any time via unloading hole 42, off-load
Groove 41 is discharged, thus effectively reduces the oil pressure at this, improves bearing capacity and the service life of gear oil pump, reduces
The noise of gear oil pump；And this utility model will not destroy the band with root circle, it is to avoid too links up, and effectively prevents
The volumetric efficiency caused because of leakage reduces.
See Fig. 1 and Fig. 5, in an embodiment of the present utility model, the one side towards end cap 2 of described axle sleeve 4
It is provided with the seal groove 43 of the figure of three, the sealing ring 6 matched with it is installed in described seal groove 43.Existing skill
In art, the sealing between axle sleeve and end cap is provided in the medial surface of end cap, and needs to arrange two seal with O rings, and two
O gap location has leakage, when leakage rate is big, easily cause gear volumetric efficiency decline, O-ring seals because of self
Compress variation is relatively big, and between two O, and between each composition surface, the frictional force of generation is the biggest, causes gear oil pump
Machinery relatively low.
This utility model is then to be sealingly disposed on axle sleeve 4, and seal groove 43 is in the figure of three.This practicality is new
This structure of type can make sealing member effectively fit with the sealing ring in end cap and axle sleeve along with the floating of axle sleeve, and reduction is let out
Leakage.
See Fig. 6 and Fig. 7, in an embodiment of the present utility model, the side towards end cap 2 of described sealing ring 6
Face is embedded with the sealing ring blend stop 61 of the figure of three, and sealing ring blend stop 61 can use polytetrafluoroethylmaterial material to make.This reality
With novel employing sealing ring 6 and the combined labyrinth and carbon gland of sealing ring blend stop 61, it is possible to simultaneously by high and low nip balanced surface
Long-pending adjusting and optimizing, makes to cause the fluid of end face of shaft bush, and the balancing force formed in acting on compensation sealing region, more than tooth
Wheel end face hydraulic action, at the propulsive thrust of end face of shaft bush, improves the dynamic hydraulic balance of gear oil pump, makes axle sleeve in various pressures
Under power, energy automatic paste tightening gear face, compensates after abrasion automatically, will not reduce again mechanical efficiency because balancing force is excessive simultaneously,
And effectively prevent the leakage of original each sealing member gap location, reduce the frictional force of gear oil pump self, improve gear oil
The volumetric efficiency of pump and mechanical efficiency.
In an embodiment of the present utility model, the gear parameter of described driving gear 51 and driven gear 52 is: pressure
28 ° of angle, centre-to-centre spacing 33mm, 3.25 modulus 10 teeth.The gear parameter of existing gear oil pump is: 3 modulus 10 teeth, in
The heart is away from being 20 ° for 33mm, pressure angle, and its contact ratio and backlash are relatively big, and pump the most easily makes hydraulic pressure oily hair
Heat, volumetric efficiency is low, and power is little, and service life is short, and discharge capacity, and can only be in rated pressure at 04mL/r～20mL/r
Use under 20MPa.And this utility model uses the gear of above-mentioned parameter, it is possible to discharge capacity is improved to 25mL/r, nominal operation
Boost in pressure is to 25MPa.
Be to be understood that example as herein described and embodiment only for explanation, those skilled in the art can make various according to it
Amendment or change, in the case of without departing from this utility model spirit, broadly fall into protection domain of the present utility model.
Claims (4)
- null1. high life gear oil pump，Including the pump housing (1)、It is respectively arranged on two end caps (2) at the two ends of the pump housing (1)、The driving gear shaft (31) being located in the pump housing (1) and driven gear shaft (32)、And two axle sleeves (4) being set on driving gear shaft (31) and driven gear shaft (32)，Described driving gear shaft (31) is provided with driving gear (51)，Described driven gear shaft (32) is provided with driven gear (52)，Described driving gear (51) and driven gear (52) form engaged transmission，Said two axle sleeve (4) lays respectively at driving gear (51) and the both sides of driven gear (52)，Described axle sleeve (4) be respectively equipped with compensating groove (41) towards the one side corresponding high pressure laminated oil zone of driving gear (51) and driven gear (52) and the position in low pressure oil suction district，It is characterized in that: the position towards the one side corresponding high pressure laminated oil zone of driving gear (51) and driven gear (52) of described axle sleeve (4) is additionally provided with two unloading holes (42)，The compensating groove (41) of inner side high pressure laminated oil zone corresponding to this that said two unloading hole (42) is positioned at the compensating groove (41) of corresponding high pressure laminated oil zone communicates.
- 2. high life gear oil pump as claimed in claim 1, it is characterized in that: the one side towards end cap (2) of described axle sleeve (4) is provided with the seal groove (43) of the figure of three, is provided with the sealing ring (6) matched with it in described seal groove (43).
- 3. high life gear oil pump as claimed in claim 2, it is characterised in that: described sealing ring (6) is provided with the sealing ring blend stop (61) of the figure of three.
- 4. high life gear oil pump as claimed in claim 1, it is characterised in that: the gear parameter of described driving gear (51) and driven gear (52) is: pressure angle 28 °, centre-to-centre spacing 33mm, 3.25 modulus 10 teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620397388.8U CN205606154U (en) | 2016-04-29 | 2016-04-29 | High life gear oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620397388.8U CN205606154U (en) | 2016-04-29 | 2016-04-29 | High life gear oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205606154U true CN205606154U (en) | 2016-09-28 |
Family
ID=56968362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620397388.8U Expired - Fee Related CN205606154U (en) | 2016-04-29 | 2016-04-29 | High life gear oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205606154U (en) |
-
2016
- 2016-04-29 CN CN201620397388.8U patent/CN205606154U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160928 |