CN213270108U - Engine fuel injection pump transmission mechanism - Google Patents
Engine fuel injection pump transmission mechanism Download PDFInfo
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- CN213270108U CN213270108U CN202022106149.1U CN202022106149U CN213270108U CN 213270108 U CN213270108 U CN 213270108U CN 202022106149 U CN202022106149 U CN 202022106149U CN 213270108 U CN213270108 U CN 213270108U
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- transmission shaft
- transmission
- injection pump
- fuel injection
- lubricating
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Abstract
The utility model belongs to the technical field of the diesel engine, concretely relates to engine injection pump drive mechanism. The transmission mechanism of the fuel injection pump of the engine is provided with a transmission shaft and a shell sleeved on the transmission shaft; the shell is supported on the transmission shaft through two sets of conical rolling bearings and is locked by a nut; a lubricating oil channel for lubricating the transmission shaft is arranged on the shell; the oil outlet of the lubricating oil channel is positioned between the two sets of conical rolling bearings; an oil inlet of the lubricating oil channel is communicated with an oil hole in a middle partition plate arranged at the front end of the engine to form a lubricating structure for lubricating an engine fuel injection pump transmission mechanism; the transmission shaft is fixedly connected to a transmission gear for transmitting torque; the transmission shaft is connected with the high-pressure oil pump through a coupling to drive the high-pressure oil pump to supply oil in a rotating manner. The utility model discloses guarantee in increase driving torque, increase force-feed lubrication, improved whole pump drive mechanism's reliability and stability.
Description
Technical Field
The utility model belongs to the technical field of the diesel engine, concretely relates to engine injection pump drive mechanism.
Background
At present, the lubrication mode of the oil injection pump transmission mechanism of the large and medium diesel engine mostly adopts splash lubrication; with the continuous improvement of the strengthening degree of the fuel injection pump, the transmission torque for driving the fuel injection pump is continuously increased; the transmission shaft of the oil injection pump transmission mechanism is internally insufficient to take away heat generated inside only by means of the oil amount of splash lubrication, so that friction and abrasion between the transmission shaft and a bearing are aggravated, and after the transmission shaft runs for a long time, the stability and reliability of the pump transmission mechanism are reduced, and the overall performance of an engine is affected.
SUMMERY OF THE UTILITY MODEL
In order to increase the reliability and stability of the diesel engine fuel injection pump transmission mechanism, the utility model aims to provide an engine fuel injection pump transmission mechanism.
The utility model adopts the following technical scheme for accomplishing the above purpose:
an engine fuel injection pump transmission mechanism is provided with a transmission shaft and a shell sleeved on the transmission shaft; the shell is supported on the transmission shaft through two sets of conical rolling bearings and is locked by a nut; a lubricating oil channel for lubricating the transmission shaft is arranged on the shell; the oil outlet of the lubricating oil channel is positioned between the two sets of conical rolling bearings; an oil inlet of the lubricating oil channel is communicated with an oil hole in a middle partition plate arranged at the front end of the engine to form a lubricating structure for lubricating an engine fuel injection pump transmission mechanism; the transmission shaft is fixedly connected to a transmission gear for transmitting torque; the transmission shaft is connected with the high-pressure oil pump through a coupling to drive the high-pressure oil pump to supply oil in a rotating manner.
The transmission gear is a bevel gear bearing part of the axial load of the whole transmission mechanism; the bevel gear is provided with a plurality of mounting holes for connecting with the transmission shaft, and the plurality of mounting holes are distributed in a non-circumferential manner and used for positioning and mounting the transmission gear.
The front end of the transmission mechanism, namely the space between the nut and the front-end conical rolling bearing, forms the front-end seal of the transmission mechanism through a sealing ring, an O-shaped ring and a shaft seal which are arranged on the transmission shaft.
The shell is of a structure with a step through hole in the center; the stepped through hole in the center of the shell is provided with through holes which are matched with the two sets of conical rolling bearings respectively, and two through holes with different diameters are arranged between the through holes which are matched with the two sets of conical rolling bearings; the front end face of the shell is provided with a cylinder for supporting the middle partition plate.
The transmission shaft is a stepped shaft.
The utility model provides an engine fuel injection pump transmission mechanism, guarantee to increase the transmission torque, increase the force-feed lubrication simultaneously, improved the reliability and the stability of whole pump transmission mechanism; the mechanism can bear larger driving torque of the fuel injection pump, and ensures stable and reliable long-time operation of the fuel injection pump.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of a transmission gear.
Fig. 3 is a schematic view of a drive shaft.
Fig. 4 is a schematic view of the housing.
FIG. 5 is a schematic view of a seal ring.
Fig. 6 is a schematic view of a nut.
In the figure: 1. the transmission gear comprises a transmission gear 2, a transmission shaft 21, shafts I and 22, key grooves 23, shafts II and 24, shafts III and 25, shafts IV and 26, shafts V and 27, shafts VI and 28, shafts VII and 29, holes 3, a conical rolling bearing 4, a partition plate 5, a shell 51, O-shaped ring grooves I and 52, a lubricating oil inlet 53, O-shaped ring grooves II and 54, a cylindrical surface 55, a technical hole 56, a lubricating oil channel 57/58 and a cylindrical surface; 6. sealing ring, 7, shaft seal, 8, nut, 9, bolt, 10, O-shaped ring, 11, cover plate, 12 and mounting hole.
Detailed Description
The invention is described in connection with the accompanying drawings and the specific embodiments:
as shown in fig. 1, an engine fuel injection pump transmission mechanism comprises a transmission shaft 2, a housing 5 sleeved on the transmission shaft 2; the shell 5 is supported on the transmission shaft 2 through two sets of conical rolling bearings 3 and is locked by a nut 8; the nut 8 is structured as shown in fig. 6, and a lubricating oil channel 56 for lubricating the transmission shaft is arranged on the shell 5; the oil outlet of the lubricating oil channel 56 is positioned between the two sets of conical rolling bearings 3; the oil inlet 52 of the lubricating oil channel 56 is communicated with an oil hole on the middle partition plate 4 arranged at the front end of the engine to form a lubricating structure for lubricating the transmission mechanism of the fuel injection pump of the engine; the transmission shaft 2 is fixedly connected to a transmission gear 1 for transmitting torque; the transmission shaft 2 is connected with the transmission gear 1 through a bolt 9, and the transmission shaft 2 is connected with the high-pressure oil pump through a coupling to drive the high-pressure oil pump to supply oil in a rotating mode.
As shown in fig. 2, the transmission gear 1 is a bevel gear which bears the axial load of the whole transmission mechanism; the cover plate 11 of the bevel gear is provided with a plurality of mounting holes 12 used for being connected with a transmission shaft, and the plurality of mounting holes 12 are distributed in a non-circumferential mode and used for positioning and mounting the transmission gear.
The front end of the transmission mechanism, namely the space between the nut and the front end conical rolling bearing, forms the front end seal of the transmission mechanism through a seal ring 6, an O-shaped ring 10 and a shaft seal 7 which are arranged on a transmission shaft, and the structure of the seal ring is shown in figure 5.
As shown in fig. 4, the housing 5 has a structure with a stepped through hole at the center; the stepped through hole in the center of the shell 5 is provided with through holes matched with the two sets of conical rolling bearings respectively, and two through holes with different diameters are arranged between the through holes matched with the two sets of conical rolling bearings; the front face of the housing has a cylinder 54 for supporting the septum. The O-shaped ring groove I51 is used for sealing the oil inlet; the cylinder 54 is matched with a middle partition plate of the engine, and the O-shaped ring groove II 53 is used for sealing the transmission mechanism of the sealing pump and the installation surface of the engine; 3 process holes 55 are process holes of the lubricating oil channel, and the lubricating oil channel is plugged by a screw plug after being processed; cylindrical surfaces 57, 58 cooperate with conical rolling bearings.
The transmission shaft is a stepped shaft, and the shaft I21 is connected with a coupling and positioned through a key slot 22; the shaft II 23 is used for matching with the nut 8; the shaft III 24 is matched with the ring 6, and the shaft IV 25 is matched with the O-shaped ring 10 for end face sealing; the shaft V26 is matched with the bearing 3, and the shaft VI 27 is matched with the bearing 4 and used for axial thrust and transmission; the shaft VII 28 is matched with the transmission gear 1, and the holes 29 are 6 threaded holes which are non-circumferentially and uniformly distributed and are matched with the bolts 9 for fixing the transmission gear 1.
The whole oil injection pump transmission mechanism is arranged on a middle partition plate at the front end of an engine through a through hole on a shell 5, a transmission shaft 2 is connected with a high-pressure oil pump through a coupling, and a transmission gear 1 is meshed with a cam shaft gear to drive the high-pressure oil pump to supply oil in a rotating mode. Lubricating oil enters the lubricating oil channel of the shell 5 through the oil holes in the middle partition plate to lubricate the kinematic pair of the transmission shaft and the bearing, so that the overall reliability of the pump transmission mechanism is improved.
Claims (5)
1. The utility model provides an engine injection pump drive mechanism which characterized in that: the engine fuel injection pump transmission mechanism is provided with a transmission shaft and a shell sleeved on the transmission shaft; the shell is supported on the transmission shaft through two sets of conical rolling bearings and is locked by a nut; a lubricating oil channel for lubricating the transmission shaft is arranged on the shell; the oil outlet of the lubricating oil channel is positioned between the two sets of conical rolling bearings; an oil inlet of the lubricating oil channel is communicated with an oil hole in a middle partition plate arranged at the front end of the engine to form a lubricating structure for lubricating an engine fuel injection pump transmission mechanism; the transmission shaft is fixedly connected to a transmission gear for transmitting torque; the transmission shaft is connected with the high-pressure oil pump through a coupling to drive the high-pressure oil pump to supply oil in a rotating manner.
2. The engine fuel injection pump drive mechanism of claim 1, wherein: the transmission gear is a bevel gear bearing the axial load of the whole transmission mechanism; the helical gear is provided with a plurality of mounting holes for connecting with the transmission shaft, and the plurality of mounting holes are distributed in a non-circumferential manner.
3. The engine fuel injection pump drive mechanism of claim 1, wherein: the front end of the transmission mechanism, namely the space between the nut and the front-end conical rolling bearing, forms the front-end seal of the transmission mechanism through a sealing ring, an O-shaped ring and a shaft seal which are arranged on the transmission shaft.
4. The engine fuel injection pump drive mechanism of claim 1, wherein: the shell is of a structure with a step through hole in the center; the stepped through hole in the center of the shell is provided with through holes which are matched with the two sets of conical rolling bearings respectively, and two through holes with different diameters are arranged between the through holes which are matched with the two sets of conical rolling bearings; the front end face of the shell is provided with a cylinder for supporting the middle partition plate.
5. The engine fuel injection pump drive mechanism of claim 1, wherein: the transmission shaft is a stepped shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022106149.1U CN213270108U (en) | 2020-09-23 | 2020-09-23 | Engine fuel injection pump transmission mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022106149.1U CN213270108U (en) | 2020-09-23 | 2020-09-23 | Engine fuel injection pump transmission mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213270108U true CN213270108U (en) | 2021-05-25 |
Family
ID=75944127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022106149.1U Active CN213270108U (en) | 2020-09-23 | 2020-09-23 | Engine fuel injection pump transmission mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213270108U (en) |
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2020
- 2020-09-23 CN CN202022106149.1U patent/CN213270108U/en active Active
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