CN108915919B - Common rail pump driving device of high-pressure common rail diesel engine - Google Patents
Common rail pump driving device of high-pressure common rail diesel engine Download PDFInfo
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- CN108915919B CN108915919B CN201810988368.1A CN201810988368A CN108915919B CN 108915919 B CN108915919 B CN 108915919B CN 201810988368 A CN201810988368 A CN 201810988368A CN 108915919 B CN108915919 B CN 108915919B
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- common rail
- stepped shaft
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/12—Closed-circuit lubricating systems not provided for in groups F01M1/02 - F01M1/10
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
- F02M55/025—Common rails
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
- F02M59/48—Assembling; Disassembling; Replacing
Abstract
The invention belongs to the technical field of machinery, and particularly relates to a common rail pump driving device of a high-pressure common rail diesel engine. The high-pressure common rail diesel engine common rail pump driving device is provided with a bearing shell connected to the left side of a common rail pump; the bearing shell is in a stepped shaft shape formed by a first stepped shaft, a second stepped shaft, a third stepped shaft and a fourth stepped shaft; the center of the bearing shell is provided with a stepped through hole; the outer circle of the bearing shell is provided with a radial through hole; a transmission shaft is arranged in the stepped through hole; the transmission shaft is supported in the stepped through hole by the rolling bearing I and the rolling bearing II; the left end of the transmission shaft extends out of the stepped through hole; the left end of the transmission shaft is sleeved with a driving gear and locked by a locking nut II to form a structure that the transmission shaft rotates along with the driving gear under the action of external force; the bearing housing is fixedly connected with the gear box through an adapter flange. The invention has the characteristics of high reliability and convenient disassembly and assembly.
Description
Technical Field
The invention belongs to the technical field of machinery, and particularly relates to a common rail pump driving device of a high-pressure common rail diesel engine.
Background
The common rail pump is a core component of the high-pressure common rail diesel engine, the high-pressure common rail diesel engine generally utilizes one or two common rail pumps to continuously convey high-pressure fuel into a common rail pipe at a certain speed ratio, the high-pressure fuel is conveyed into each cylinder fuel injector by the common rail pipe, and the ECU directly controls a high-speed electromagnetic valve in the fuel injector to realize the timing and quantitative injection of the fuel; compared with the conventional diesel engine, the high-pressure common rail diesel engine has a wider oil injection quantity adjusting range, and can obtain better combustion, specific fuel consumption, noise and emission.
In order to deliver high-pressure fuel into the common rail pipe at a certain speed, the driving device needs to drive the common rail pump to operate at a higher speed and transmit a larger torque to the common rail pump, which requires that the driving device of the common rail pump has to have higher reliability.
For high-speed high-power common rail diesel engines, a reasonably designed camshaft drive is a problem that many diesel engine design manufacturers must consider. At present, a plurality of driving mechanisms of a high-pressure co-diesel engine are arranged in a gear box body, such as an engine high-pressure common rail driving mechanism disclosed in patent application number CN 106870232A, on one hand, a driving shaft and a rolling bearing of the driving mechanism occupy a large installation space of the gear box in the radial direction and the axial direction, and the arrangement of other gear mechanisms of the diesel engine is limited; on the other hand, the driving gear, the driving shaft and the rolling bearing belong to vulnerable parts, and are required to be disassembled periodically for maintenance, and accessories such as a cover plate of a gear box body with a complex structure and the like are required to be disassembled for the driving mechanism, so that the disassembly difficulty is high; when the driving mechanism is installed, the driving shaft, the rolling bearing and the common rail pump are required to be installed on the gear box in sequence, the installation procedure is complex, and the axial clearance of the rolling bearing is difficult to adjust.
Disclosure of Invention
In order to solve the technical problems, the invention provides the common rail pump driving device of the high-pressure common rail diesel engine, which has the advantages of compact structure, convenient disassembly and assembly, good lubrication and high reliability.
The invention adopts the following technical scheme to complete the tasks:
the common rail pump driving device of the high-pressure common rail diesel engine is provided with a bearing shell connected to the left side of the common rail pump; the bearing shell is in a stepped shaft shape formed by a first stepped shaft, a second stepped shaft, a third stepped shaft and a fourth stepped shaft; the second stepped shaft is in arc transition with the third stepped shaft and the fourth stepped shaft; the diameter of the second stepped shaft is larger than that of the fourth stepped shaft; the diameter of the fourth stepped shaft is larger than that of the third stepped shaft, and the diameter of the third stepped shaft is larger than that of the first stepped shaft; the center of the bearing shell is provided with a stepped through hole; the step through holes are sequentially a first through hole, a second through hole, a third through hole, a fourth through hole and a fifth through hole from left to right; the diameter of the first through hole is larger than that of the second through hole and smaller than that of the third through hole; the diameter of the third through hole is smaller than that of the fourth through hole, and the diameter of the fourth through hole is smaller than that of the fifth through hole; the bearing shell is provided with an axial hole communicated with the fourth hole; the outer circle of the third stepped shaft of the bearing shell is provided with a radial through hole, and the radial through hole is communicated with an external oil pipe and the stepped through hole; a transmission shaft is arranged in the stepped through hole; the transmission shaft is supported in the stepped through hole by a rolling bearing I and a rolling bearing II which are in interference fit with the first through hole and the third through hole respectively; the left end of the transmission shaft extends out of the stepped through hole; the left end of the transmission shaft is sleeved with a driving gear and locked by a locking nut II to form a structure that the transmission shaft rotates along with the driving gear under the action of external force; the right end face of the transmission shaft is provided with a concave groove which is concave inwards, and the outer circle of the groove is uniformly provided with an inner spline; the positioning shaft of the common rail pump is a two-section stepped shaft, wherein the small-diameter section shaft is positioned in a groove at the right end of the transmission shaft and is in spline connection with the transmission shaft, and the large-diameter section shaft is positioned in the fifth through hole and is in clearance fit with the fifth through hole; an adapter flange is sleeved on the first stepped shaft of the bearing shell; the right end face of the adapter flange is attached to the left end face of the second step shaft; the adapter flange is fixedly connected with the second step shaft into a whole through a connecting screw II; the left side of the adapter flange is fixedly connected with the gear box.
The transmission shaft is a stepped shaft with the diameter from left to right being larger and larger, and the stepped shaft is sequentially from left to right: a first stepped shaft with external threads, a frustum shaft with gradually expanding diameter from left to right, a second stepped shaft with external threads on the outer circle, a third stepped shaft with clearance fit on the outer circle and the inner ring of the rolling bearing I, a fourth stepped shaft with clearance fit on the outer circle and the inner ring of the rolling bearing II and a fifth stepped shaft; the right end face of the fifth stepped shaft is provided with a groove, and the left end face is used for limiting the rolling bearing II; the groove is internally provided with an internal spline which is used for being connected with a positioning shaft of the common rail pump in a key way.
The second stepped shaft is sleeved with a lock nut I in threaded connection with the second stepped shaft; the right side of lock nut I with antifriction bearing I's left side terminal surface laminate mutually for spacing antifriction bearing I.
The radial through holes are a large-diameter unthreaded hole, a threaded hole and a small-diameter unthreaded hole from top to bottom.
The end face of the right side of the outer ring of the rolling bearing I in interference fit with the first through hole is attached to the end face of the first through hole, and the end face of the first through hole limits the rolling bearing I.
The end face of the left side of the outer ring of the rolling bearing II in interference fit with the third through hole is attached to the end face of the third through hole, and the end face of the third through hole limits the rolling bearing II.
The adapter flange is a stepped shaft formed by integrating a stepped shaft I and a stepped shaft II; the outer diameter of the stepped shaft I is smaller than that of the stepped shaft II; the excircle of the stepped shaft I is in clearance fit with a positioning hole of the gear box.
The stepped shaft II is uniformly provided with a plurality of through holes for connecting the adapter flange and the gear box into a whole, and is also uniformly provided with a plurality of threaded blind holes for connecting the adapter flange and the bearing shell into a whole.
The outer circle of the driving gear is provided with a plurality of teeth, the middle of the driving gear is provided with two stepped holes, the left stepped hole is bowl-shaped, the right stepped hole is a taper hole, and the taper hole is matched with the outer conical surface of the frustum shaft of the transmission shaft.
The invention provides an assembling process of a common rail pump driving device of a high-pressure common rail diesel engine, which comprises the following steps:
firstly, the adapter flange is mounted to the gearbox by means of a connecting screw iii, the remaining parts of the drive being assembled outside the gearbox into one piece, in the order: firstly, pressing the rolling bearing I and the rolling bearing II to corresponding positions of a bearing shell according to requirements; the transmission shaft is arranged on two rolling bearings in a bearing shell, and after the axial clearance of the transmission shaft in the bearings is adjusted, the transmission shaft is fixed through a locking nut; then the driving gear is arranged on the transmission shaft and is fastened by a locking nut; then the installation part is integrally installed on the adapter flange and is fastened by a connecting screw II; finally, the external spline shaft of the common rail pump is matched with the internal spline hole of the transmission shaft, and the common rail pump is mounted on the bearing shell and is fastened by the connecting screw I.
The common rail pump driving device of the high-pressure common rail diesel engine provided by the invention has the following beneficial effects by adopting the technical scheme:
high reliability
The common rail pump driving device bears larger impact load in the working process, the working life of the common rail pump driving device is limited to a certain extent, in the technical scheme, the common rail pump and the driving device are connected through the spline, and certain working clearances are formed in the radial direction and the axial direction, so that the common rail pump is well protected due to the existence of the working clearances even if the driving device breaks down.
2) Easy dismounting
In the technical scheme, after the installation of the adapter flange and the gear box is completed, the common rail pump driving device, together with the driving gear and the common rail pump, can be installed on the adapter flange; the whole installation process does not need to detach any part on the gear box, the detachment method is similar to the detachment method, the installation and the detachment process are simple and convenient, and the time and the labor are saved.
3) Good maintainability
In all common rail pump drives, the drive shafts and rolling bearings are the most vulnerable parts that require regular maintenance or replacement. In this technical scheme, when dismantling transmission shaft and antifriction bearing, only need dismantle the connecting screw II of connecting bearing housing and adapter flange, can dismantle the part that contains transmission shaft and antifriction bearing, whole dismantlement process is accomplished in the outside of gear box, compares other common rail pump drive arrangement's design, and maintainability of this scheme is better.
4) Firm support
In the technical scheme, the whole driving device is fixedly supported at the joint of the adapter flange and the gear box, and a wider cylindrical surface is designed on the outer circle of the bearing shell and used for arranging elastic supports so as to ensure that the whole driving device is more firm in support during working.
5) Good lubricating performance
In the technical scheme, a pressure lubrication oil port and an oil inlet channel are arranged on the outer circle of a bearing shell, pressure lubricating oil enters an inner cavity between two rolling bearings through the oil channel, and good lubrication is formed between the rolling bearings and a transmission shaft and between spline matching surfaces of the transmission shaft and a common rail pump. Meanwhile, the lubricating engine oil flows into the gear box through an axial oil hole arranged on the left end face of the bearing shell and an inner cavity of the adapter flange.
Drawings
FIG. 1 is a structural assembly view I of the present invention.
Fig. 2 is a structural assembly diagram ii of the present invention.
Fig. 3 is a schematic structural view of a transmission shaft according to the present invention.
In the figure: 1. a lock nut II; 2. a drive gear; 3. an adapter flange; 4. a connecting screw III; 5. a bearing housing; 5-1, a first stepped shaft, 5-2, a second stepped shaft, 5-3, a third stepped shaft, 5-4 a fourth stepped shaft, 5-5, a first through hole, 5-6, a second through hole, 5-7, a third through hole, 5-8, a fourth through hole, 5-9, a fifth through hole, 5-10, an axial hole, 5-11 and a radial through hole; 6. a common rail pump; 7. a connecting screw I; 8. o-shaped ring I; 9. a connecting screw II; 10. o-shaped ring II; 11. a gear box, 12, a rolling bearing I; 13. a rolling bearing II; 14. the transmission shaft comprises a transmission shaft body, a first stepped shaft body 14-1, a second stepped shaft body 14-2, a frustum shaft body 14-3, a second stepped shaft body 14-4, a third stepped shaft body 14-5, a fourth stepped shaft body 14-6, a fifth stepped shaft body 14-7, a groove 15 and a locking nut I.
Detailed Description
The following describes the embodiments of the present invention further with reference to the accompanying drawings:
as shown in fig. 1, a high-pressure common rail diesel engine common rail pump driving device has a bearing housing 5 connected to the left side of a common rail pump; referring to fig. 2, the bearing housing 5 is a stepped shaft shape formed by a first stepped shaft 5-1, a second stepped shaft 5-2, a third stepped shaft 5-3 and a fourth stepped shaft 5-4; the second stepped shaft 5-2, the third stepped shaft 5-3 and the fourth stepped shaft 5-4 are in arc transition; the diameter of the second stepped shaft 5-2 is larger than that of the fourth stepped shaft 5-4; the diameter of the fourth stepped shaft 5-4 is larger than the diameter of the third stepped shaft 5-3, and the diameter of the third stepped shaft 5-3 is larger than the diameter of the first stepped shaft 5-1; the center of the bearing housing 5 is provided with a stepped through hole; the step through holes are sequentially provided with a first through hole 5-5, a second through hole 5-6, a third through hole 5-7, a fourth through hole 5-8 and a fifth through hole 5-9 from left to right; the diameter of the first through hole 5-5 is larger than that of the second through hole 5-6 and smaller than that of the third through hole 5-7; the diameter of the third through hole 5-7 is smaller than that of the fourth through hole 5-8, and the diameter of the fourth through hole 5-8 is smaller than that of the fifth through hole 5-9; the bearing shell is provided with an axial hole 5-10 communicated with the fourth hole; the outer circle of the third stepped shaft of the bearing shell is provided with a radial through hole 5-11, and the radial through hole 5-11 is communicated with an external oil pipe and the stepped through hole; a transmission shaft 14 is arranged in the stepped through hole; referring to fig. 3, the transmission shaft 14 is supported in the stepped through holes by a rolling bearing i 12 and a rolling bearing ii 13 which are in interference fit with the first through hole 5-5 and the third through hole 5-7 respectively; the left end of the transmission shaft 14 extends out of the stepped through hole; the left end of the transmission shaft 14 is sleeved with a driving gear 2 and is locked by a lock nut II 1 to form a structure that the transmission shaft rotates along with the driving gear under the action of external force; the right end face of the transmission shaft 14 is provided with a groove 14-7 which is concave inwards, and the excircle of the groove 14-7 is uniformly provided with an internal spline; the positioning shaft of the common rail pump is a two-section stepped shaft, wherein the small-diameter section shaft is positioned in a groove at the right end of the transmission shaft and is in spline connection with the transmission shaft, and the large-diameter section shaft is positioned in the fifth through hole and is in clearance fit with the fifth through hole; an adapter flange 3 is sleeved on the first stepped shaft of the bearing shell; the right end face of the adapter flange 3 is attached to the left end face of the second stepped shaft; the adapter flange 3 is fixedly connected with the second step shaft into a whole through a connecting screw II 9; the left side of the adapter flange 3 is fixedly connected with the gear box 11.
As shown in fig. 3, the transmission shaft is a stepped shaft with a diameter from left to right being larger and larger, and the steps from left to right are as follows: a first stepped shaft 14-1 with external threads, a frustum shaft 14-2 with gradually expanding diameter from left to right, a second stepped shaft 14-3 with external threads on the outer circle, a third stepped shaft 14-4 with the outer circle in clearance fit with the inner ring of the rolling bearing I, a fourth stepped shaft 14-5 with the outer circle in clearance fit with the inner ring of the rolling bearing II and a fifth stepped shaft 14-6; the right end face of the fifth stepped shaft 14-6 is provided with a groove 14-7, and the left end face is used for limiting the rolling bearing II; the recess 14-7 has internal splines therein for keying with the locating shaft of the common rail pump.
A locking nut I15 in threaded connection with the second stepped shaft 14-4 is sleeved on the second stepped shaft; the right side of lock nut I with antifriction bearing I's left side terminal surface laminate mutually for spacing antifriction bearing I.
The radial through holes 5-11 are a large-diameter unthreaded hole, a threaded hole and a small-diameter unthreaded hole from top to bottom.
The end face of the right side of the outer ring of the rolling bearing I in interference fit with the first through hole is attached to the end face of the first through hole, and the end face of the first through hole limits the rolling bearing I.
The end face of the left side of the outer ring of the rolling bearing II in interference fit with the third through hole is attached to the end face of the third through hole, and the end face of the third through hole limits the rolling bearing II.
The adapter flange is a stepped shaft formed by integrating a stepped shaft I and a stepped shaft II; the outer diameter of the stepped shaft I is smaller than that of the stepped shaft II; the excircle of the stepped shaft I is in clearance fit with a positioning hole of the gear box.
The stepped shaft II is uniformly provided with a plurality of through holes for connecting the adapter flange and the gear box into a whole, and is also uniformly provided with a plurality of threaded blind holes for connecting the adapter flange and the bearing shell into a whole.
The outer circle of the driving gear is provided with a plurality of teeth, the middle of the driving gear is provided with two stepped holes, the left stepped hole is bowl-shaped, the right stepped hole is a taper hole, and the taper hole is matched with the outer conical surface of the frustum shaft of the transmission shaft.
The invention provides an assembling process of a common rail pump driving device of a high-pressure common rail diesel engine, which comprises the following steps:
firstly, the adapter flange is mounted to the gearbox by means of a connecting screw iii, the remaining parts of the drive being assembled outside the gearbox into one piece, in the order: firstly, pressing the rolling bearing I and the rolling bearing II to corresponding positions of a bearing shell according to requirements; the transmission shaft is arranged on two rolling bearings in a bearing shell, and after the axial clearance of the transmission shaft in the bearings is adjusted, the transmission shaft is fixed through a locking nut; then the driving gear is arranged on the transmission shaft and is fastened by a locking nut; then the installation part is integrally installed on the adapter flange and is fastened by a connecting screw II; finally, the external spline shaft of the common rail pump is matched with the internal spline hole of the transmission shaft, and the common rail pump is mounted on the bearing shell and is fastened by the connecting screw I.
Claims (6)
1. A high-pressure common rail diesel engine common rail pump driving device is characterized in that: the common rail pump driving device is provided with a bearing shell connected to the left side of the common rail pump; the bearing shell is in a stepped shaft shape formed by a first stepped shaft, a second stepped shaft, a third stepped shaft and a fourth stepped shaft; the second stepped shaft is in arc transition with the third stepped shaft and the fourth stepped shaft; the diameter of the second stepped shaft is larger than that of the fourth stepped shaft; the diameter of the fourth stepped shaft is larger than that of the third stepped shaft, and the diameter of the third stepped shaft is larger than that of the first stepped shaft; the center of the bearing shell is provided with a stepped through hole; the step through holes are sequentially a first through hole, a second through hole, a third through hole, a fourth through hole and a fifth through hole from left to right; the diameter of the first through hole is larger than that of the second through hole and smaller than that of the third through hole; the diameter of the third through hole is smaller than that of the fourth through hole, and the diameter of the fourth through hole is smaller than that of the fifth through hole; the bearing shell is provided with an axial hole communicated with the fourth hole; the outer circle of the third stepped shaft of the bearing shell is provided with a radial through hole, and the radial through hole is communicated with an external oil pipe and the stepped through hole; the radial through holes are a large-diameter unthreaded hole, a threaded hole and a small-diameter unthreaded hole from top to bottom in sequence; a transmission shaft is arranged in the stepped through hole; the transmission shaft is a stepped shaft with the diameter from left to right being larger and larger, and the stepped shaft is sequentially from left to right: a first stepped shaft with external threads, a frustum shaft with gradually expanding diameter from left to right, a second stepped shaft with external threads on the outer circle, a third stepped shaft with clearance fit on the outer circle and the inner ring of the rolling bearing I, a fourth stepped shaft with clearance fit on the outer circle and the inner ring of the rolling bearing II and a fifth stepped shaft; the right end face of the fifth stepped shaft is provided with a groove, and the left end face is used for limiting the rolling bearing II; the groove is internally provided with an internal spline for being keyed with a positioning shaft of the common rail pump; the second stepped shaft is sleeved with a lock nut I in threaded connection with the second stepped shaft; the right side of the lock nut I is attached to the left end face of the rolling bearing I, and is used for limiting the rolling bearing I; the transmission shaft is supported in the stepped through hole by a rolling bearing I and a rolling bearing II which are in interference fit with the first through hole and the third through hole respectively; the left end of the transmission shaft extends out of the stepped through hole; the left end of the transmission shaft is sleeved with a driving gear and locked by a locking nut II to form a structure that the transmission shaft rotates along with the driving gear under the action of external force; the right end face of the transmission shaft is provided with a concave groove which is concave inwards, and the outer circle of the groove is uniformly provided with an inner spline; the positioning shaft of the common rail pump is a two-section stepped shaft, wherein the small-diameter section shaft is positioned in a groove at the right end of the transmission shaft and is in spline connection with the transmission shaft, and the large-diameter section shaft is positioned in the fifth through hole and is in clearance fit with the fifth through hole; an adapter flange is sleeved on the first stepped shaft of the bearing shell; the right end face of the adapter flange is attached to the left end face of the second step shaft; the adapter flange is fixedly connected with the second step shaft into a whole through a connecting screw II; the left side of the adapter flange is fixedly connected with the gear box.
2. The high-pressure common rail diesel engine common rail pump driving device as claimed in claim 1, wherein: the end face of the right side of the outer ring of the rolling bearing I in interference fit with the first through hole is attached to the end face of the first through hole, and the end face of the first through hole limits the rolling bearing I.
3. The high-pressure common rail diesel engine common rail pump driving device as claimed in claim 1, wherein: the end face of the left side of the outer ring of the rolling bearing II in interference fit with the third through hole is attached to the end face of the third through hole, and the end face of the third through hole limits the rolling bearing II.
4. The high-pressure common rail diesel engine common rail pump driving device as claimed in claim 1, wherein: the adapter flange is a stepped shaft formed by integrating a stepped shaft I and a stepped shaft II; the outer diameter of the stepped shaft I is smaller than that of the stepped shaft II; the excircle of the stepped shaft I is in clearance fit with a positioning hole of the gear box.
5. The high pressure common rail diesel engine common rail pump driving device according to claim 4, wherein: the stepped shaft II is uniformly provided with a plurality of through holes for connecting the adapter flange and the gear box into a whole, and is also uniformly provided with a plurality of threaded blind holes for connecting the adapter flange and the bearing shell into a whole.
6. The high-pressure common rail diesel engine common rail pump driving device as claimed in claim 1, wherein: the outer circle of the driving gear is provided with a plurality of teeth, the middle of the driving gear is provided with two stepped holes, the left stepped hole is bowl-shaped, the right stepped hole is a taper hole, and the taper hole is matched with the outer conical surface of the frustum shaft of the transmission shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810988368.1A CN108915919B (en) | 2018-08-28 | 2018-08-28 | Common rail pump driving device of high-pressure common rail diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810988368.1A CN108915919B (en) | 2018-08-28 | 2018-08-28 | Common rail pump driving device of high-pressure common rail diesel engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108915919A CN108915919A (en) | 2018-11-30 |
| CN108915919B true CN108915919B (en) | 2023-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810988368.1A Active CN108915919B (en) | 2018-08-28 | 2018-08-28 | Common rail pump driving device of high-pressure common rail diesel engine |
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| CN (1) | CN108915919B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110725766A (en) * | 2019-09-26 | 2020-01-24 | 河南柴油机重工有限责任公司 | High-pressure oil pump driving transmission device of single-cylinder diesel engine, mounting method and application |
| CN113349974A (en) * | 2021-06-29 | 2021-09-07 | 潮州市乐久塑胶有限公司 | Electric toothbrush |
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| CN203452958U (en) * | 2013-09-26 | 2014-02-26 | 南岳电控(衡阳)工业技术有限公司 | Oil pumping part for radial plunger piston oil feeding pump |
| CN106870232A (en) * | 2017-02-07 | 2017-06-20 | 无锡开普机械有限公司 | Engine high pressure common rail pump drive mechanism |
| CN208950754U (en) * | 2018-08-28 | 2019-06-07 | 河南柴油机重工有限责任公司 | A kind of Design of High Pressure Common Rail Diesel Engine common rail pump drive |
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|---|---|
| CN108915919A (en) | 2018-11-30 |
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