CN203742980U - Transmission oil pump - Google Patents
Transmission oil pump Download PDFInfo
- Publication number
- CN203742980U CN203742980U CN201420074730.1U CN201420074730U CN203742980U CN 203742980 U CN203742980 U CN 203742980U CN 201420074730 U CN201420074730 U CN 201420074730U CN 203742980 U CN203742980 U CN 203742980U
- Authority
- CN
- China
- Prior art keywords
- gear
- shaft
- axle
- pump
- oil pump
- 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 - Lifetime
Links
- 230000005540 biological transmission Effects 0.000 title abstract description 5
- 239000010687 lubricating oil Substances 0.000 abstract 3
- 239000003921 oil Substances 0.000 abstract 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Abstract
The utility model discloses a transmission oil pump comprising a pump body, and a front end cover and a rear end cover arranged at two ends of the pump body, wherein a first gear and a second gear meshed with each other are arranged inside the pump body; the first gear and the second gear are respectively fixed on a first gear shaft and a second gear shaft; two ends of the first gear shaft and the second gear shaft are rotationally fixed inside first and second 8-shaped shaft sleeves arranged at two ends respectively; first bar-type lubricating oil grooves are formed in the hole walls of shaft mounting holes of the first shaft sleeve and the second shaft sleeve along the axial directions of the first gear shaft and the second gear shaft; second annular lubricating oil grooves are formed in the hole walls of the shaft mounting holes of the first shaft sleeve and the second shaft sleeve and/or the shaft wall of the shaft end on which the first and second gear shafts and the first and second shaft sleeves are assembled; the loop directions of the second lubricating oil grooves are consistent with the gyratory directions of the first gear shaft and the second gear shaft. By adopting the transmission oil pump, the mechanical efficiency and the total efficiency can be improved under the condition of not increasing input torque, and the load of a motor is reduced.
Description
Technical field
The utility model relates to vehicle gear box field, is specifically related to a kind of gear box oil pump.
Background technique
In gearbox, oil pump is equivalent to the heart of gearbox, and the oil that is recycled to gearbox bottom is added and is sent to top after strainer filtering.AMT oil pump for automatic transmission is that an external gear pump forms, and this gear pump is by the engaging tooth wheels that arrange in front and rear cover, the pump housing, Sealing and the pump housing, and the gear shaft of fixed gear and gear bush form.The two ends of gear shaft and gear bush formation are rotatably assorted, on the axle mounting hole hole wall of gear bush along gear shaft axially offer an oil groove 1, gear shaft is optical axis, gear bush is Spielpassung with coordinating of gear shaft, gear bush is equivalent to sliding bearing, as shown in Figure 1.The total efficiency of this kind of gear pump is not high, is all the total efficiency that improves gear pump by improving volumetric efficiency or oil pump capacity in traditional scheme, still improves volumetric efficiency or oil pump capacity and may increase the input torque of oil pump.And be to meet traffic requirement the little moment of torsion in the situation that for the requirement of AMT oil pump for automatic transmission, in order to reduce the load of motor.
Summary of the invention
The purpose of this utility model is to provide a kind of gear box oil pump, and it can effectively reduce the input torque of oil pump under the situation that ensures oil pump volumetric efficiency, thereby improves mechanical efficiency and the total efficiency of gear box oil pump, reduces the load of motor.
Technical solution adopted in the utility model is: a kind of gear box oil pump, before comprising that the pump housing and pump housing two ends arrange, rear end cover, in the pump housing, be provided with intermeshing first, two gears, first, two gears are separately fixed at first, on two gear shafts, first, the two ends of two gear shafts are rotated respectively and are fixed on the figure of eight first that its two ends arrange, in two axle sleeves, first, on the axle mounting hole hole wall of two axle sleeves along first, first oil groove that axially offers bar shaped of two gear shafts, it is characterized in that: first, on the axle mounting hole hole wall of two axle sleeves and/or first, two gear shafts and first, on the axle head axial wall that two axle sleeves assemble, offer the second oil groove of annular, the hoop of the second oil groove and first, the gyratory directions of two gear shafts is consistent
By a large amount of experimental analyses, the total efficiency of finding gear pump is subject to the frictional influence between first and second gear shaft and first and second axle sleeve larger, the conventional tooth wheel pump only axle mounting hole hole wall place on first and second axle sleeve is offered the first oil groove, be difficult to ensure the sufficient lubrication of each point on first and second axle sleeve and first and second gear shaft surface of contact, friction is large.Therefore, on the axle mounting hole hole wall of first and second axle sleeve and/or offer the second oil groove of annular on the axle head axial wall that assembles of first and second gear shaft and first and second axle sleeve, ensure sufficient lubrication between the two, maximum reduction friction, do not increasing under the situation of input torque, the mechanical efficiency and the total efficiency that improve gear box oil pump, reduce the load of motor.
Brief description of the drawings
Fig. 1 is gear shaft in traditional gear box oil pump and the structural representation of gear bush;
Fig. 2 is structural representation of the present utility model;
Fig. 3 is internal structure schematic diagram of the present utility model;
Fig. 4,5 is two kinds of mode of executions of the present utility model.
Embodiment
The technological scheme that the utility model is taked is as Fig. 2, 3, 4, shown in 5, a kind of gear box oil pump, before comprising that the pump housing 21 and the pump housing 21 two ends arrange, rear end cover 22, 23, in the pump housing 21, be provided with intermeshing first, two gears 11, 12, first, two gears 11, 12 are separately fixed at first, two gear shafts 13, on 14, first, two gear shafts 13, 14 two ends are rotated respectively and are fixed on the figure of eight first that its two ends arrange, two axle sleeves 15, in 16, first, two axle sleeves 15, on 16 axle mounting hole hole wall along first, two gear shafts 13, 14 the first oil groove 10a that axially offers bar shaped, first, two axle sleeves 15, on 16 axle mounting hole hole wall and/or first, two gear shafts 13, 14 and first, two axle sleeves 15, on the 16 axle head axial walls that assemble, offer the second oil groove 10b of annular, the hoop of the second oil groove 10b and first, two gear shafts 13, 14 gyratory directions is consistent.If the second oil groove 10b is set on first and second axle sleeve 15,16 and first and second gear 11,12 simultaneously, preferably by the second oil groove 10b interleaved setting on both.
Offer the second oil groove 10b of annular, can reduce the area of contact of gear shaft and axle sleeve on the one hand, thereby reduce the friction torque that relative movement produces; On the other hand, in the second oil groove 10b, can store lubricant oil, make lubricated more abundant.By improving lubricating between first and second gear shaft 13,14 and first and second axle sleeve 15,16 axles, farthest reduce friction between the two, ensureing under the situation of oil pump volumetric efficiency, can effectively reduce the input torque of oil pump, thereby the mechanical efficiency and the total efficiency that improve gear box oil pump, reduce the load of motor.
Concrete enforcement can be by scheme as shown in Figure 4, and the second oil groove 10b is opened on the axle mounting hole hole wall of first and second axle sleeve 15,16.The second oil groove 10b is along the axially interval setting successively of first and second gear shaft 13,14.
Also can be by scheme as shown in Figure 5, the second oil groove 10b is opened on the axle head axial wall that first and second gear shaft 13,14 and first and second axle sleeve 15,16 assemble.
When specific operation, preferably on the axle mounting hole hole wall of first and second axle sleeve 15,16, arrange 3, the second oil groove quantity also can be determined according to half bush wall thickness, the second oil groove 10b of annular, in order to ensure as far as possible have lubricant oil in groove, groove depth should be more than or equal to groove width.As dark the second oil groove 10b, groove width are made as respectively to 0.5mm.
Claims (6)
1. a gear box oil pump, before comprising that the pump housing (21) and the pump housing (21) two ends arrange, rear end cover (22, 23), in the pump housing (21), be provided with intermeshing first, two gears (11, 12), first, two gears (11, 12) be separately fixed at first, two gear shafts (13, 14) upper, first, two gear shafts (13, 14) two ends are rotated respectively and are fixed on the figure of eight first that its two ends arrange, two axle sleeves (15, 16) in, first, two axle sleeves (15, 16) on axle mounting hole hole wall along first, two gear shafts (13, 14) the first oil groove (10a) that axially offers bar shaped, is characterized in that: first, two axle sleeves (15, 16) on axle mounting hole hole wall and/or first, two gear shafts (13, 14) with first, two axle sleeves (15, 16) on the axle head axial wall assembling, offer second oil groove (10b) of annular, the hoop and first of the second oil groove (10b), two gear shafts (13, 14) gyratory directions is consistent.
2. gear box oil pump as claimed in claim 1, is characterized in that: the second oil groove (10b) is opened on the axle mounting hole hole wall of first and second axle sleeve (15,16).
3. gear box oil pump as claimed in claim 1, is characterized in that: the second oil groove (10b) is opened on the axle head axial wall that first and second gear shaft (13,14) and first and second axle sleeve (15,16) assemble.
4. gear box oil pump as claimed in claim 2 or claim 3, is characterized in that: the second oil groove (10b) along first and second gear shaft (13,14) axially successively interval arrange.
5. gear box oil pump as claimed in claim 2 or claim 3, is characterized in that: groove depth value >=groove width value of the second oil groove (10b).
6. gear box oil pump as claimed in claim 4, is characterized in that: the second oil groove (10b) is arranged at intervals with 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420074730.1U CN203742980U (en) | 2014-02-20 | 2014-02-20 | Transmission oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420074730.1U CN203742980U (en) | 2014-02-20 | 2014-02-20 | Transmission oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203742980U true CN203742980U (en) | 2014-07-30 |
Family
ID=51342788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420074730.1U Expired - Lifetime CN203742980U (en) | 2014-02-20 | 2014-02-20 | Transmission oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203742980U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111946803A (en) * | 2020-08-26 | 2020-11-17 | 湖南机油泵股份有限公司 | Oil pump of hybrid transmission |
| KR102191657B1 (en) * | 2020-01-21 | 2020-12-16 | 주식회사 엠에스티 | Gear Pump |
-
2014
- 2014-02-20 CN CN201420074730.1U patent/CN203742980U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102191657B1 (en) * | 2020-01-21 | 2020-12-16 | 주식회사 엠에스티 | Gear Pump |
| CN111946803A (en) * | 2020-08-26 | 2020-11-17 | 湖南机油泵股份有限公司 | Oil pump of hybrid transmission |
| CN111946803B (en) * | 2020-08-26 | 2023-11-07 | 湖南机油泵股份有限公司 | Oil pump of hybrid transmission |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160713 Address after: 241006 Wuhu economic and Technological Development Zone, Anhui, No. 8 Changchun Road Patentee after: Chery Holding Co.,Ltd. Address before: 241009 Wuhu economic and Technological Development Zone, Anhui, No. 8 Changchun Road Patentee before: CHERY AUTOMOBILE Co.,Ltd. |
|
| CP03 | Change of name, title or address |
Address after: 241000 Changchun Road, Wuhu economic and Technological Development Zone, Anhui 8 Patentee after: Chery Holdings Ltd. Address before: 241006 Changchun Road, Wuhu economic and Technological Development Zone, Anhui 8 Patentee before: Chery Holding Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140730 |
|
| CX01 | Expiry of patent term |