CN209469526U - A kind of high voltage common rail pump novel gear type oil transportation pump transmission mechanism - Google Patents
A kind of high voltage common rail pump novel gear type oil transportation pump transmission mechanism Download PDFInfo
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- CN209469526U CN209469526U CN201822050458.4U CN201822050458U CN209469526U CN 209469526 U CN209469526 U CN 209469526U CN 201822050458 U CN201822050458 U CN 201822050458U CN 209469526 U CN209469526 U CN 209469526U
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- pump body
- common rail
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Abstract
The utility model is a kind of high voltage common rail pump novel gear type oil transportation pump transmission mechanism, including connecting key, gear, gear pump body, high voltage common rail pump drive shaft, oil-way and cavity；There is flat hole among the connecting key, the shaft end of the drive shaft has flat position, connecting key and drive shaft to be cooperatively connected by flat position, flat hole；The connecting key is cooperated by the corresponding aperture of multiple forming angles and gear, and forming angle quantity is more, and contact area is big, uniform force；The gear passes through support column high speed rotation in gear pump body cavity, gear pump body support column designs for bearing-free, the cavity portion of gear pump body and Gear Contact has coating, and gear pump body bottom surface portions have oil-way, guarantees sufficient lubrication when high-speed gear movement.Structure is simple, easy for installation, and intensity is high, is not easy to get rusty.
Description
Technical field
The utility model relates to diesel engine high-pressure co-rail fuel oil pump technical field, specifically a kind of height of structure optimization
Press common rail pump low pressure gear fuel supply pump.
Background technique
In face of increasingly strict emission regulation and severe energy problem, sprayed on a diesel engine using high-pressure common rail fuel oil
System has become one of the Main Trends of The Development of world today's diesel technology.High-pressure common-rail fuel pump is used as Fuel System
It unites important component part, application is more and more extensive.For gear fuel supply pump due to strong with suction capacity, structure is simple, flow
Uniformly, it is widely used on high voltage common rail pump the advantages that reliable operation.Common gear fuel supply pump volumetric efficiency is low, structure is multiple
Miscellaneous, the poor connection type generally used of interchangeablity connects for flat key or spline.Flat key stable connection, but be inconvenient to dismantle；
Spline connection processing is complicated, and has certain requirement to installation space.Inconvenient installation and removal or suffered stress compared with
Greatly, it is prone to wear and is broken, in addition metal material gets rusty easily.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of high voltage common rail pump novel gear type oil transfer pump biography
Motivation structure, including connecting key, gear, gear pump body, high voltage common rail pump drive shaft, oil-way and cavity；In the connecting key
Between have a flat hole, the shaft end of the drive shaft has flat position, connecting key and drive shaft to be cooperatively connected by flat position, flat hole；The connection
Key is cooperated by the corresponding aperture of forming angle and gear, and forming angle quantity is no less than 2, and contact area is big, uniform force；The tooth
Wheel is designed by support column high speed rotation in gear pump body cavity, gear pump body support column for bearing-free, gear pump body and tooth
The cavity portion of wheel contact has coating, and gear pump body bottom surface portions have oil-way, guarantees abundant profit when high-speed gear movement
It is sliding.
Further, the connecting key is engineering plastics, and has self-lubricating property；Connecting key angle is right relative to flat position
Claim design, guarantees that gear pump positive and negative rotation stress is identical, to guarantee the versatility of positive and negative rotation.
Further, the connecting key is hexagram structure, and material is high strength nonmetallic material polyether-ether-ketone.
Gear fuel supply pump uses bearing-free formula structure, transmission shaft and gear to be keyed by slide sheet type, and structure is simple, peace
Dress is convenient；Gear pump body is axial minimum with radial clearance with gear, greatly improves the volumetric efficiency of gear pump；Slide sheet type passes
Dynamic key uses hexagram structure, increases forced area, effectively reduces stress；Shape is symmetrical expression, meets positive and negative rotation bidirectional rotary
Turn demand；Slide sheet type driving key uses high strength nonmetallic material polyether-ether-ketone, and intensity is high, is not easy to get rusty.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
With reference to Fig. 1, drive shaft, 4 are driven by engine end, and connecting key 1 is driven by drive shaft 4, and gear 2 passes through connecting key 1
Drive around gear pump body 3 support column generate high speed rotation.Specific forms of motion is that drive shaft 4 is driven by the cooperation of flat mouth
Connecting key 1 rotates, and connecting key 1 passes torque to gear 2 by 6 angles, and 2 one side of gear is fixed on the branch of gear pump body 3
On dagger, rotation is on the other hand generated, the volume of oil inlet and fuel-displaced side is caused to change, and then forms oil inlet and fuel-displaced.Gear pump
There is coating in 6 part of cavity of body 3 and Gear Contact, and 3 bottom surface portions of gear pump body have oil-way 5, guarantees high-speed gear movement
When sufficient lubrication；Using drive shaft and connecting key 1 by flat position be directly connected to and the support column of gear pump body 3 on do not pacify
The mode of dress bearing ensure that the simple and convenient of drive mechanism and mounting means；Gear pump body 3 and 2 axial direction of gear and radial clearance
It is minimum, greatly improve the volumetric efficiency of gear pump；Connecting key 1 uses hexagram structure, increases forced area, effectively subtracts
Small stress, shape are symmetrical expression, meet positive and negative rotation bidirectional rotation demand；Connecting key 1 uses high strength nonmetallic material polyethers ether
Ketone, intensity is high, is not easy to get rusty.
Claims (3)
1. a kind of high voltage common rail pump novel gear type oil transportation pump transmission mechanism, it is characterised in that: including connecting key (1), gear
(2), gear pump body (3), high voltage common rail pump drive shaft (4), oil-way (5) and cavity (6)；Have among the connecting key (1)
Flat hole, the shaft end of the drive shaft (4) have flat position, connecting key (1) and drive shaft (4) to be cooperatively connected by flat position, flat hole；It is described
Connecting key (1) is cooperated by the corresponding aperture of forming angle and gear (2), and forming angle quantity is no less than 2, and contact area is big, stress
Uniformly；For the gear (2) by support column high speed rotation in gear pump body (3) cavity, gear pump body (3) support column is shaftless
Design is held, gear pump body (3) and the cavity (6) of Gear Contact partially have coating, and gear pump body (3) bottom surface portions have oil-way
(5), guarantee sufficient lubrication when high-speed gear movement.
2. a kind of high voltage common rail pump according to claim 1 novel gear type oil transportation pump transmission mechanism, it is characterised in that:
The connecting key (1) is engineering plastics, and has self-lubricating property；Connecting key (1) angle guarantees relative to flat position symmetric design
Gear pump positive and negative rotation stress is identical, to guarantee the versatility of positive and negative rotation.
3. a kind of high voltage common rail pump according to claim 1 or 2 novel gear type oil transportation pump transmission mechanism, feature exist
In: the connecting key (1) is hexagram structure, and material is high strength nonmetallic material polyether-ether-ketone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822050458.4U CN209469526U (en) | 2018-12-07 | 2018-12-07 | A kind of high voltage common rail pump novel gear type oil transportation pump transmission mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822050458.4U CN209469526U (en) | 2018-12-07 | 2018-12-07 | A kind of high voltage common rail pump novel gear type oil transportation pump transmission mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209469526U true CN209469526U (en) | 2019-10-08 |
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ID=68088858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822050458.4U Active CN209469526U (en) | 2018-12-07 | 2018-12-07 | A kind of high voltage common rail pump novel gear type oil transportation pump transmission mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209469526U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322773A (en) * | 2018-12-07 | 2019-02-12 | 思达耐精密机电（常熟）有限公司 | A kind of high voltage common rail pump novel gear type oil transportation pump transmission mechanism |
| CN111664088A (en) * | 2020-05-18 | 2020-09-15 | 上海盈智汽车零部件有限公司 | High-wear-resistance and high-precision diesel gear pump |
-
2018
- 2018-12-07 CN CN201822050458.4U patent/CN209469526U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322773A (en) * | 2018-12-07 | 2019-02-12 | 思达耐精密机电（常熟）有限公司 | A kind of high voltage common rail pump novel gear type oil transportation pump transmission mechanism |
| CN111664088A (en) * | 2020-05-18 | 2020-09-15 | 上海盈智汽车零部件有限公司 | High-wear-resistance and high-precision diesel gear pump |
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